{"id":2476,"date":"2026-11-05T16:27:06","date_gmt":"2026-11-05T08:27:06","guid":{"rendered":"https:\/\/www.lycbearingcn.com\/news\/bearing-type-selection-decision-matrix\/"},"modified":"2026-11-05T16:27:18","modified_gmt":"2026-11-05T08:27:18","slug":"bearing-type-selection-decision-matrix","status":"publish","type":"post","link":"https:\/\/www.lycbearingcn.com\/ru\/news\/bearing-type-selection-decision-matrix\/","title":{"rendered":"Bearing Type Selection: A Decision Matrix with a Worked Example"},"content":{"rendered":"<h1>Bearing Type Selection: A Decision Matrix with a Worked Example<\/h1>\n<p>Most &#8220;how to choose a bearing&#8221; pages hand you a comparison table and stop there. A table tells you<br \/>\nwhat a deep groove ball bearing <em>is<\/em>; it does not tell you whether that bearing survives<br \/>\n20,000 hours at 720 rpm under 8 kN of radial load, 2.5 kN of axial load, and 0.4&deg; of shaft<br \/>\nmisalignment. That second question is the one that actually costs money when it is answered wrong.<\/p>\n<p>This guide does both. First, a <strong>decision matrix<\/strong> that narrows ten-plus bearing<br \/>\nfamilies down to a shortlist using five measurable inputs. Then a <strong>fully worked selection<br \/>\nexample<\/strong>: we compute the equivalent dynamic load <em>P<\/em>, the ISO 281 basic rating life<br \/>\n<em>L<sub>10h<\/sub><\/em>, and the required dynamic load rating <em>C<\/em>, and compare three<br \/>\ncandidate arrangements numerically. You get the arithmetic, not another checklist.<\/p>\n<p class=\"note\"><strong>About the numbers:<\/strong> all load ratings, factors and tolerance angles<br \/>\nin the worked example are <em>illustrative magnitudes for teaching the method<\/em>, not catalogue<br \/>\nvalues for any specific manufacturer&#8217;s product. Always substitute the ratings from the catalogue of<br \/>\nthe bearing you intend to buy.<\/p>\n<h2>1. Why a comparison table is not a selection method<\/h2>\n<p>A table is a lookup device: you already know the answer, and you want to confirm its properties.<br \/>\nSelection runs in the opposite direction \u2014 you have a load case and need to arrive at the answer.<br \/>\nThree failure modes show up repeatedly when people skip the arithmetic:<\/p>\n<ul>\n<li><strong>Capacity is not a single number.<\/strong> &#8220;Roller bearings are stronger&#8221; is true for<br \/>\n      radial load and misleading for speed, friction, and misalignment. A spherical roller bearing<br \/>\n      that thrives in a crusher is a poor choice for a high-speed spindle.<\/li>\n<li><strong>Life is dominated by one exponent.<\/strong> Because <em>L<sub>10<\/sub><\/em> scales with<br \/>\n      <em>(C\/P)<sup>p<\/sup><\/em>, and <em>p<\/em> is 3 for ball bearings but 10\/3 for roller bearings,<br \/>\n      a modest change in equivalent load or rated capacity moves life by multiples \u2014 not percentages.<br \/>\n      Guessing here is expensive.<\/li>\n<li><strong>The binding constraint is often not load.<\/strong> Misalignment, speed, envelope,<br \/>\n      minimum load, and lubrication frequently eliminate a bearing that passes the life calculation<br \/>\n      comfortably. In our worked example below, the arrangement with the <em>longest<\/em> calculated<br \/>\n      life is rejected for exactly this reason.<\/li>\n<\/ul>\n<p>The fix is a sequence: define inputs &rarr; eliminate by hard constraints &rarr; compute<br \/>\n<em>P<\/em> and life for the survivors &rarr; check the secondary constraints &rarr; only then pick a<br \/>\npart number.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/Deep-Groove-Ball-Bearing-1.png\" alt=\"Single row deep groove ball bearing\" \/><figcaption>The deep groove ball bearing is the default answer for moderate loads and high speed \u2014 but &#8220;default&#8221; is a starting hypothesis, not a conclusion.<\/figcaption><\/figure>\n<h2>2. The five inputs that decide the type<\/h2>\n<p>Before looking at any catalogue, fix these five. Everything downstream is a consequence of them.<\/p>\n<table>\n<thead>\n<tr>\n<th>Input<\/th>\n<th>What to establish<\/th>\n<th>Why it decides the type<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Load direction &amp; ratio<\/strong><\/td>\n<td>Radial <em>Fr<\/em>, axial <em>Fa<\/em>, combined, shock content, and the ratio <em>Fa\/Fr<\/em><\/td>\n<td>Separates pure-radial types (cylindrical, needle) from combined-load types (deep groove, angular contact, tapered, spherical) and pure-axial types (thrust)<\/td>\n<\/tr>\n<tr>\n<td><strong>Speed<\/strong><\/td>\n<td>Continuous and peak rpm; <em>n&middot;d<sub>m<\/sub><\/em> where <em>d<sub>m<\/sub><\/em> is the mean diameter<\/td>\n<td>Ball bearings tolerate higher speed and run cooler; roller types generate more heat and have lower limiting speeds<\/td>\n<\/tr>\n<tr>\n<td><strong>Misalignment<\/strong><\/td>\n<td>Expected angular error between shaft and housing, in degrees<\/td>\n<td>Rigid types (tapered, cylindrical, angular contact) tolerate only a few arcminutes; self-aligning types tolerate ~1&ndash;2&deg;<\/td>\n<\/tr>\n<tr>\n<td><strong>Envelope<\/strong><\/td>\n<td>Bore (set by the shaft), max outside diameter, max width<\/td>\n<td>When radial space is tight, needle rollers or thin-section bearings win; when one bearing must do everything, a compact combined-load type wins<\/td>\n<\/tr>\n<tr>\n<td><strong>Life, temperature &amp; environment<\/strong><\/td>\n<td>Target <em>L<sub>10h<\/sub><\/em>, operating temperature, dust\/water, grease vs oil, sealing<\/td>\n<td>Drives required <em>C<\/em>, clearance class (C3\/C4), seal type, and lubricant choice<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Note that <em>target life<\/em> sits in this list, not in the calculation section. Life is a design<br \/>\ninput you choose; the calculation then tells you what rated capacity is needed to deliver it.<\/p>\n<h2>3. The bearing type decision matrix<\/h2>\n<p>Use this as the first-pass filter. Load direction gets you to a block; speed and misalignment cut<br \/>\nit down; envelope and cost pick the winner. Ratings are qualitative and typical &mdash; the worked<br \/>\nexample in sections 5&ndash;8 shows how to replace &#8220;high&#8221; and &#8220;moderate&#8221; with numbers.<\/p>\n<table>\n<thead>\n<tr>\n<th>Bearing type<\/th>\n<th>Radial<\/th>\n<th>Axial<\/th>\n<th>Speed<\/th>\n<th>Misalignment<\/th>\n<th>Stiffness<\/th>\n<th>Relative cost<\/th>\n<th>Typical fit<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/deep-groove-ball-bearings\/\">Deep groove ball<\/a><\/td>\n<td>Moderate<\/td>\n<td>Moderate, both directions<\/td>\n<td>Very high<\/td>\n<td>Low (~0.15&deg;)<\/td>\n<td>Moderate<\/td>\n<td>$<\/td>\n<td>Electric motors, pumps, gearboxes<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/angular-contact-ball-bearings\/\">Angular contact ball<\/a> (paired)<\/td>\n<td>Moderate<\/td>\n<td>High, one direction per bearing<\/td>\n<td>Very high<\/td>\n<td>Very low<\/td>\n<td>High with preload<\/td>\n<td>$$<\/td>\n<td>Spindles, pumps, precision shafts<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/self-aligning-ball-bearings\/\">Self-aligning ball<\/a><\/td>\n<td>Light&ndash;moderate<\/td>\n<td>Light<\/td>\n<td>High<\/td>\n<td>High (~2&deg;)<\/td>\n<td>Low<\/td>\n<td>$<\/td>\n<td>Long shafts, agricultural, conveyors<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/angular-contact-ball-bearings\/four-point-contact-ball-bearings\/\">Four-point contact ball<\/a><\/td>\n<td>Moderate<\/td>\n<td>High, both directions<\/td>\n<td>Medium<\/td>\n<td>Low<\/td>\n<td>Moderate<\/td>\n<td>$$<\/td>\n<td>Compact combined load, turntables<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/cylindrical-roller-bearings\/\">Cylindrical roller<\/a> (NU\/N\/NJ)<\/td>\n<td>Very high<\/td>\n<td>None (or limited, by design)<\/td>\n<td>High<\/td>\n<td>Very low<\/td>\n<td>High<\/td>\n<td>$$<\/td>\n<td>Gearboxes, motors, rolling mills<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/tapered-roller-bearings\/\">Tapered roller<\/a> (paired)<\/td>\n<td>High<\/td>\n<td>High, one direction per bearing<\/td>\n<td>Medium<\/td>\n<td>Very low (~0.05&deg;)<\/td>\n<td>Very high<\/td>\n<td>$$<\/td>\n<td>Wheel hubs, gearboxes, rolling mills<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/spherical-roller-bearings\/\">Spherical roller<\/a><\/td>\n<td>Very high<\/td>\n<td>Moderate, both directions<\/td>\n<td>Low&ndash;medium<\/td>\n<td>High (~1.5&deg;)<\/td>\n<td>High<\/td>\n<td>$$$<\/td>\n<td>Crushers, fans, paper machines, mining<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/thrust-roller-bearing\/thrust-needle-roller-bearings\/\">Needle roller<\/a><\/td>\n<td>High per section height<\/td>\n<td>None<\/td>\n<td>Medium<\/td>\n<td>Very low<\/td>\n<td>Moderate<\/td>\n<td>$<\/td>\n<td>Transmissions, compact radial space<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/thrust-ball-bearings\/\">Thrust ball \/ thrust roller<\/a><\/td>\n<td>None<\/td>\n<td>Very high<\/td>\n<td>Low<\/td>\n<td>Low<\/td>\n<td>High axially<\/td>\n<td>$$<\/td>\n<td>Vertical shafts, hooks, screw presses<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/slewing-bearings\/\">Slewing \/ crossed roller<\/a><\/td>\n<td>High<\/td>\n<td>High + tilting moment<\/td>\n<td>Low<\/td>\n<td>Low&ndash;moderate<\/td>\n<td>Very high<\/td>\n<td>$$$$<\/td>\n<td>Cranes, excavators, robotics, radar<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Two families sit in the &#8220;ball&#8221; block, two in &#8220;rigid roller&#8221;, one in &#8220;self-aligning&#8221;, and one at<br \/>\nthe top for moment loads. Their mechanics are worth a picture each.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/Angular-Contact-Ball-Bearing.png\" alt=\"Angular contact ball bearing\" \/><figcaption>Angular contact ball bearing: contact angle carries axial load in one direction, so these are almost always mounted as a matched pair.<\/figcaption><\/figure>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/double-row-self-aligning-ball-bearing.png\" alt=\"Double row self-aligning ball bearing\" \/><figcaption>Self-aligning ball bearing: two rows in a spherical outer-ring raceway tolerate shaft deflection at the cost of load capacity.<\/figcaption><\/figure>\n<h2>4. Worked example \u2014 the load case<\/h2>\n<p>A geared drive shaft on a welded frame. The shaft diameter is fixed at 70 mm by the gear bore, the<br \/>\nhousing allows a maximum outside diameter of 150 mm and a width of 40 mm, and the frame is known to<br \/>\ndeflect. The specified duty is:<\/p>\n<table>\n<thead>\n<tr>\n<th>Parameter<\/th>\n<th>Symbol<\/th>\n<th>Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Radial load<\/td>\n<td><em>Fr<\/em><\/td>\n<td>8.0 kN<\/td>\n<\/tr>\n<tr>\n<td>Axial load (one direction, from a helical gear)<\/td>\n<td><em>Fa<\/em><\/td>\n<td>2.5 kN<\/td>\n<\/tr>\n<tr>\n<td>Rotational speed<\/td>\n<td><em>n<\/em><\/td>\n<td>720 rpm<\/td>\n<\/tr>\n<tr>\n<td>Application \/ load factor (moderate shock)<\/td>\n<td><em>f<sub>d<\/sub><\/em><\/td>\n<td>1.3<\/td>\n<\/tr>\n<tr>\n<td>Target basic rating life<\/td>\n<td><em>L<sub>10h<\/sub><\/em><\/td>\n<td>20,000 h<\/td>\n<\/tr>\n<tr>\n<td>Expected misalignment<\/td>\n<td>&mdash;<\/td>\n<td>0.4&deg; (welded frame, long shaft)<\/td>\n<\/tr>\n<tr>\n<td>Operating temperature<\/td>\n<td>&mdash;<\/td>\n<td>75 &deg;C, grease lubricated<\/td>\n<\/tr>\n<tr>\n<td>Envelope<\/td>\n<td>&mdash;<\/td>\n<td>bore 70 mm, OD &le; 150 mm, width &le; 40 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Load ratio: <em>Fa\/Fr<\/em> = 2.5 \/ 8.0 = <strong>0.313<\/strong>. Combined loading, radial dominated,<br \/>\nwith a non-trivial axial component. We now walk the sequence.<\/p>\n<h2>5. Step 1 \u2014 eliminate by load direction and envelope<\/h2>\n<p><em>Fa\/Fr<\/em> = 0.313 means the bearing must carry both components. That immediately rules out:<\/p>\n<ul>\n<li><strong>Cylindrical roller (NU\/N) and needle roller<\/strong> \u2014 high radial capacity, but no<br \/>\n      axial capacity in the standard design. They would need a separate thrust bearing, adding width,<br \/>\n      parts, and a lubrication split. With a 40 mm width budget and a single housing, that is<br \/>\n      unattractive here.<\/li>\n<li><strong>Pure thrust ball \/ thrust roller<\/strong> \u2014 they cannot take the 8 kN radial load at<br \/>\n      all, and they also need a minimum axial load to avoid skidding.<\/li>\n<li><strong>Slewing and crossed roller rings<\/strong> \u2014 technically capable of combined load plus<br \/>\n      tilting moment, but sized and priced for low-speed rotational structures, not a 720 rpm shaft.<br \/>\n      See our <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/what-is-the-difference-between-rolling-bearings-and-slewing-bearings\/\">rolling bearing vs slewing bearing comparison<\/a> for<br \/>\n      where that boundary sits, and our <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/how-to-choose-the-right-slewing-bearing\/\">slewing bearing selection overview<\/a><br \/>\n      if the application is a rotating structure rather than a shaft.<\/li>\n<\/ul>\n<p>Survivors: <strong>deep groove ball, angular contact ball (paired), tapered roller (paired),<br \/>\nspherical roller, four-point contact ball<\/strong>. Five candidates, all available in a 70 mm bore.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/nu312-bearing.png\" alt=\"NU design cylindrical roller bearing\" \/><figcaption>Cylindrical roller (NU) designs are excellent for pure radial load and allow axial shaft movement \u2014 but here the 2.5 kN axial load rules them out as a standalone solution.<\/figcaption><\/figure>\n<h2>6. Step 2 \u2014 eliminate by misalignment before you calculate life<\/h2>\n<p>This is the step most selection guides skip, and the one that decides this example. The welded<br \/>\nframe gives 0.4&deg; of angular error. Typical tolerable misalignment (illustrative order-of-magnitude<br \/>\nvalues, confirm against the catalogue):<\/p>\n<table>\n<thead>\n<tr>\n<th>Candidate<\/th>\n<th>Tolerable misalignment (typical)<\/th>\n<th>0.4&deg; case<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Tapered roller pair<\/td>\n<td>~0.05&deg;<\/td>\n<td><strong>Fail<\/strong> \u2014 edge loading, rapid fatigue<\/td>\n<\/tr>\n<tr>\n<td>Angular contact pair<\/td>\n<td>~0.03&deg;<\/td>\n<td><strong>Fail<\/strong> \u2014 preload-sensitive<\/td>\n<\/tr>\n<tr>\n<td>Four-point contact ball<\/td>\n<td>~0.1&deg;<\/td>\n<td><strong>Fail<\/strong><\/td>\n<\/tr>\n<tr>\n<td>Deep groove ball<\/td>\n<td>~0.15&deg;<\/td>\n<td><strong>Marginal \/ fail<\/strong> at this magnitude<\/td>\n<\/tr>\n<tr>\n<td>Spherical roller<\/td>\n<td>~1.5&deg;<\/td>\n<td><strong>Pass<\/strong> with margin<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>So on the frame as built, the spherical roller bearing is the only survivor that comfortably<br \/>\naccepts the misalignment. But we should still do the life arithmetic for all three representative<br \/>\noptions \u2014 because it quantifies <em>how much<\/em> we are giving up, and it tells us exactly what<br \/>\nchanging the frame would buy us. That trade is the useful engineering output.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/Single-Row-Tapered-Roller-Bearing.png\" alt=\"Single row tapered roller bearing\" \/><figcaption>Tapered roller bearings give outstanding combined-load capacity and stiffness, but only when the shaft and housing stay aligned to a few arcminutes.<\/figcaption><\/figure>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/22220-bearing.png\" alt=\"Spherical roller bearing\" \/><figcaption>Spherical roller bearings self-align inside the outer ring, which is why they dominate crushers, fans and long-shaft installations.<\/figcaption><\/figure>\n<h2>7. Step 3 \u2014 equivalent dynamic load P<\/h2>\n<p>ISO 281 reduces the combined load to a single equivalent dynamic load:<\/p>\n<p style=\"text-align:center;font-size:17px\"><strong>P = f<sub>d<\/sub> &middot; (X&middot;F<sub>r<\/sub> + Y&middot;F<sub>a<\/sub>)<\/strong><\/p>\n<p>The factors <em>X<\/em> and <em>Y<\/em> depend on the bearing type and on whether <em>Fa\/Fr<\/em><br \/>\nexceeds a limiting value <em>e<\/em>; for deep groove ball bearings, <em>e<\/em> and <em>Y<\/em> are<br \/>\nthemselves functions of <em>Fa\/C<sub>0<\/sub><\/em>. The table below uses illustrative factors to keep<br \/>\nthe method transparent.<\/p>\n<table>\n<thead>\n<tr>\n<th>Candidate (illustrative)<\/th>\n<th>C kN<\/th>\n<th>C<sub>0<\/sub> \u043a\u041d<\/th>\n<th>e<\/th>\n<th>Fa\/Fr vs e<\/th>\n<th>X<\/th>\n<th>Y<\/th>\n<th>P kN<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A) Deep groove ball 6314<\/td>\n<td>104<\/td>\n<td>68<\/td>\n<td>0.24<\/td>\n<td>0.313 &gt; e<\/td>\n<td>0.56<\/td>\n<td>1.8<\/td>\n<td><strong>11.67<\/strong><\/td>\n<\/tr>\n<tr>\n<td>B) Tapered roller 30214 pair<\/td>\n<td>170 (pair)<\/td>\n<td>&mdash;<\/td>\n<td>0.37<\/td>\n<td>0.313 &le; e<\/td>\n<td>1.0<\/td>\n<td>0<\/td>\n<td><strong>10.40<\/strong><\/td>\n<\/tr>\n<tr>\n<td>C) Spherical roller 22214<\/td>\n<td>178<\/td>\n<td>&mdash;<\/td>\n<td>0.23<\/td>\n<td>0.313 &gt; e<\/td>\n<td>0.67<\/td>\n<td>2.9<\/td>\n<td><strong>16.39<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Worked longhand for each:<\/p>\n<ul>\n<li><strong>A:<\/strong> <em>Fa\/C<sub>0<\/sub><\/em> = 2.5\/68 = 0.037 &rarr; illustrative <em>e<\/em> = 0.24,<br \/>\n      <em>Y<\/em> = 1.8. Since 0.313 &gt; 0.24, use <em>X<\/em> = 0.56:<br \/>\n      P = 1.3 &times; (0.56&times;8.0 + 1.8&times;2.5) = 1.3 &times; 8.98 = <strong>11.67 kN<\/strong>.<\/li>\n<li><strong>B:<\/strong> for an opposed pair, 0.313 &le; <em>e<\/em> = 0.37, so the axial term drops<br \/>\n      out and the pair behaves as <em>X<\/em> = 1, <em>Y<\/em> = 0:<br \/>\n      P = 1.3 &times; 8.0 = <strong>10.40 kN<\/strong>. (The pair rating <em>C<\/em> is taken as<br \/>\n      1.62 &times; the single-bearing rating, an illustrative pairing factor.)<\/li>\n<li><strong>C:<\/strong> 0.313 &gt; <em>e<\/em> = 0.23, so <em>X<\/em> = 0.67, <em>Y<\/em> = 2.9:<br \/>\n      P = 1.3 &times; (0.67&times;8.0 + 2.9&times;2.5) = 1.3 &times; 12.61 = <strong>16.39 kN<\/strong>.<\/li>\n<\/ul>\n<p>Notice the counter-intuitive result: the spherical roller bearing has by far the highest<br \/>\n<em>C<\/em> yet the highest <em>P<\/em>, because its <em>Y<\/em> factor penalises axial load heavily.<br \/>\nThis is precisely why &#8220;just pick the biggest C&#8221; is not a method.<\/p>\n<h2>8. Step 4 \u2014 L10 life and the required dynamic load rating<\/h2>\n<p>ISO 281 basic rating life, in million revolutions, is <em>L<sub>10<\/sub><\/em> = (C\/P)<sup>p<\/sup>,<br \/>\nwith <em>p<\/em> = 3 for ball bearings and <em>p<\/em> = 10\/3 for roller bearings. Converting to hours<br \/>\nat speed <em>n<\/em> (rpm):<\/p>\n<p style=\"text-align:center;font-size:17px\"><strong>L<sub>10h<\/sub> = (10<sup>6<\/sup> \/ 60n) &middot; (C\/P)<sup>p<\/sup><\/strong><\/p>\n<p>At 720 rpm, the factor 10<sup>6<\/sup>\/(60&times;720) = <strong>23.15 hours per million<br \/>\nrevolutions<\/strong>. Rearranging for the capacity needed to hit a target life gives<br \/>\n<strong>C<sub>req<\/sub> = P &middot; (L<sub>10h<\/sub> \/ 23.15)<sup>1\/p<\/sup><\/strong>. For a 20,000 h<br \/>\ntarget, (20,000 \/ 23.15) = 864 million revolutions, so the required ratio C\/P is<br \/>\n864<sup>1\/3<\/sup> &asymp; 9.52 for ball bearings and 864<sup>0.3<\/sup> &asymp; 7.60 for roller bearings.<\/p>\n<table>\n<thead>\n<tr>\n<th>Candidate<\/th>\n<th>C kN<\/th>\n<th>P kN<\/th>\n<th>p<\/th>\n<th>C\/P<\/th>\n<th>L<sub>10h<\/sub> (h)<\/th>\n<th>C<sub>req<\/sub> for 20,000 h<\/th>\n<th>Verdict<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>A) Deep groove ball 6314<\/td>\n<td>104<\/td>\n<td>11.67<\/td>\n<td>3<\/td>\n<td>8.91<\/td>\n<td><strong>16,367<\/strong><\/td>\n<td>111.2 kN<\/td>\n<td>Life ~18% short<\/td>\n<\/tr>\n<tr>\n<td>B) Tapered roller 30214 pair<\/td>\n<td>170<\/td>\n<td>10.40<\/td>\n<td>10\/3<\/td>\n<td>16.35<\/td>\n<td><strong>257,091<\/strong><\/td>\n<td>79.1 kN<\/td>\n<td>Huge margin<\/td>\n<\/tr>\n<tr>\n<td>C) Spherical roller 22214<\/td>\n<td>178<\/td>\n<td>16.39<\/td>\n<td>10\/3<\/td>\n<td>10.86<\/td>\n<td><strong>65,623<\/strong><\/td>\n<td>124.6 kN<\/td>\n<td>Passes with margin<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Three useful conclusions fall out of this table:<\/p>\n<ul>\n<li><strong>A fails, but narrowly.<\/strong> It needs <em>C<\/em> = 111.2 kN and has 104 kN. Stepping<br \/>\n      up to a heavier 64-series bearing (illustrative C = 143 kN) gives ~42,500 h \u2014 but its 180 mm<br \/>\n      outside diameter breaks the 150 mm envelope. The life problem is really an envelope problem.<\/li>\n<li><strong>B is massively over-capacity<\/strong> \u2014 257,000 h against a 20,000 h target. That<br \/>\n      margin is worthless here because step 2 already rejected it on misalignment.<\/li>\n<li><strong>C clears the target by 3&times;<\/strong> while also being the only type that tolerates<br \/>\n      0.4&deg;. Its higher <em>P<\/em> is more than offset by the roller exponent <em>p<\/em> = 10\/3.<\/li>\n<\/ul>\n<p class=\"note\">These are illustrative magnitudes, not catalogue values. The factors <em>e<\/em>,<br \/>\n<em>X<\/em>, <em>Y<\/em>, the pairing factor 1.62, and all <em>C<\/em>\/<em>C<sub>0<\/sub><\/em> figures<br \/>\nmust be taken from the actual manufacturer&#8217;s catalogue before any purchasing decision.<\/p>\n<h2>9. Step 5 \u2014 compare the three solutions, not just the three bearings<\/h2>\n<p>A bearing selection is really an <em>arrangement<\/em> selection. The honest comparison includes<br \/>\nwhat you would have to change elsewhere in the machine:<\/p>\n<table>\n<thead>\n<tr>\n<th>Solution<\/th>\n<th>L<sub>10h<\/sub><\/th>\n<th>Handles 0.4&deg;?<\/th>\n<th>Fits envelope?<\/th>\n<th>What else changes<\/th>\n<th>Relative cost<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>A \u2014 Deep groove ball<\/strong> (64-series)<\/td>\n<td>~42,500 h<\/td>\n<td>No, marginal<\/td>\n<td><strong>No<\/strong> (OD 180 &gt; 150)<\/td>\n<td>Redesign housing; still need to fix alignment<\/td>\n<td>$<\/td>\n<\/tr>\n<tr>\n<td><strong>B \u2014 Tapered roller pair<\/strong> + frame rework<\/td>\n<td>257,000 h<\/td>\n<td>Only if frame is machined to &le;0.05&deg;<\/td>\n<td>Yes (OD 125)<\/td>\n<td>Machine\/weld-jig the frame, add preload\/endplay setting procedure and shims<\/td>\n<td>$$ + machining<\/td>\n<\/tr>\n<tr>\n<td><strong>C \u2014 Spherical roller 22214<\/strong><\/td>\n<td>65,600 h<\/td>\n<td><strong>Yes<\/strong> (up to ~1.5&deg;)<\/td>\n<td>Yes (OD 125)<\/td>\n<td>Nothing; standard fit, standard grease<\/td>\n<td>$$$<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Recommendation for the frame as built: solution C.<\/strong> It is the only option that<br \/>\nsatisfies life, misalignment and envelope simultaneously without redesigning the machine. Its higher<br \/>\nunit price is cheaper than machining a welded frame and adding a shimming procedure.<\/p>\n<p><strong>But if the frame can be corrected to &le;0.05&deg;<\/strong> (line-bored housing, machined<br \/>\npedestal, or a shorter shaft), solution B becomes very attractive: it fits the same 125 mm OD, is<br \/>\nstiffer, costs less per bearing, and its enormous life margin means you could downsize the bearing<br \/>\nseries further. This is the trade worth quoting both ways &mdash; and it only becomes visible once you<br \/>\nrun the numbers. Our <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/tapered-roller-bearing-selection-guide-and-luoyang-inno-bearings-customized-service\/\">tapered roller bearing selection guide<\/a> covers the<br \/>\npreload and endplay setting that a paired arrangement then requires.<\/p>\n<p>For a deeper look at the two roller families in this comparison, see our<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/spherical-cylindrical-roller-bearings-the-core-solution-for-industrial-transmission\/\">spherical and cylindrical roller bearing notes<\/a>; for the high-volume<br \/>\nrolling-mill case where four-row tapered bearings are the norm, see<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/selecting-the-right-rolling-mill-bearings-is-crucial-for-steel-mills-luoyang-inno-bearings-safeguards-production\/\">rolling mill bearing selection<\/a>.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/Inch-series-four-row-tapered-roller-bearings-1.png\" alt=\"Four row tapered roller bearing\" \/><figcaption>Four-row tapered roller bearings are the rolling-mill default: enormous radial capacity with axial load handled by the paired geometry.<\/figcaption><\/figure>\n<h2>10. The checks that come after life<\/h2>\n<p>Passing the life calculation is necessary, not sufficient. Run these before issuing a purchase<br \/>\nspec:<\/p>\n<table>\n<thead>\n<tr>\n<th>Check<\/th>\n<th>What to verify<\/th>\n<th>This example<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Speed<\/td>\n<td><em>n&middot;d<sub>m<\/sub><\/em> against the catalogue limiting speed for the lubricant and cage<\/td>\n<td><em>d<sub>m<\/sub><\/em> = (70+125)\/2 = 97.5 mm; <em>n&middot;d<sub>m<\/sub><\/em> = 70,200 mm&middot;rpm \u2014 comfortable for grease<\/td>\n<\/tr>\n<tr>\n<td>Minimum load<\/td>\n<td>Roller and thrust types need a minimum load to prevent roller\/ball skidding<\/td>\n<td>8 kN radial is well above typical minimums for this size<\/td>\n<\/tr>\n<tr>\n<td>Operating clearance<\/td>\n<td>Interference fit + inner\/outer ring temperature difference consume clearance; may push you from CN to C3\/C4<\/td>\n<td>75 &deg;C with an interference inner-ring fit &rarr; check whether C3 is needed; see <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/the-importance-of-bearing-clearance\/\">bearing clearance guidance<\/a><\/td>\n<\/tr>\n<tr>\n<td>Lubrication<\/td>\n<td>Grease vs oil, base-oil viscosity at operating temperature, relubrication interval, EP additives for shock loads<\/td>\n<td>Grease, EP2-class, interval set by 75 &deg;C and contamination; see <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/things-to-note-when-choosing-bearing-lubricant\/\">lubricant selection notes<\/a><\/td>\n<\/tr>\n<tr>\n<td>Sealing &amp; contamination<\/td>\n<td>Open, shielded (ZZ) or sealed (2RS); dust\/water ingress<\/td>\n<td>Welded-frame industrial environment &rarr; sealed or well-protected housing<\/td>\n<\/tr>\n<tr>\n<td>Fits &amp; mounting<\/td>\n<td>Shaft\/housing tolerances, shoulder squareness, mounting method (never hammer through rolling elements)<\/td>\n<td>Verify ISO 286 fits and shoulder perpendicularity before assembly<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>11. Five mistakes the arithmetic catches<\/h2>\n<ul>\n<li><strong>Selecting by bore diameter alone.<\/strong> Bore is set by the shaft; capacity, speed and<br \/>\n      misalignment decide the type. A 6314 and a 22214 share a 70 mm bore and behave nothing alike.<\/li>\n<li><strong>Ignoring the axial component because it is &#8220;small&#8221;.<\/strong> At <em>Fa\/Fr<\/em> = 0.313<br \/>\n      it crossed the <em>e<\/em> threshold and changed both <em>X<\/em> and <em>Y<\/em>, raising<br \/>\n      <em>P<\/em> by up to ~58% depending on type (10.40 kN for the tapered pair vs 16.39 kN for<br \/>\n      the spherical roller). That is a life change of several multiples.<\/li>\n<li><strong>Assuming the highest C wins.<\/strong> Candidate C had the highest <em>C<\/em> and the<br \/>\n      highest <em>P<\/em>; only the exponent made it competitive.<\/li>\n<li><strong>Sizing life before fixing alignment.<\/strong> Candidate B computed 257,000 h and was<br \/>\n      still the wrong bearing for this frame. Hard constraints outrank life.<\/li>\n<li><strong>Treating a single bearing as the whole arrangement.<\/strong> Axial load in one<br \/>\n      direction, thermal expansion, and shaft locating\/floating duties often require a matched pair<br \/>\n      or a dedicated thrust bearing. See <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/characteristics-and-differences-between-angular-contact-bearings-and-deep-groove-ball-bearings\/\">angular contact vs deep<br \/>\n      groove ball bearings<\/a> and <a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/what-is-thrust-bearing-and-where-it-is-used\/\">where thrust bearings are used<\/a>.<\/li>\n<\/ul>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/Thrust-needle-roller-bearings-1.jpg\" alt=\"Thrust needle roller bearing\" \/><figcaption>Needle and thrust rollers solve space- and axial-dominated problems \u2014 but each needs the right load direction, and thrust types need a minimum load.<\/figcaption><\/figure>\n<h2>12. Quick application &rarr; type map<\/h2>\n<table>\n<thead>\n<tr>\n<th>Application profile<\/th>\n<th>First type to evaluate<\/th>\n<th>Watch out for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>High speed, moderate radial + some axial, clean<\/td>\n<td>Deep groove ball<\/td>\n<td>Check Fa\/Fr against e; C3 if hot<\/td>\n<\/tr>\n<tr>\n<td>Combined load, high stiffness, precise axial location<\/td>\n<td>Paired angular contact or paired tapered roller<\/td>\n<td>Preload\/endplay setting; alignment<\/td>\n<\/tr>\n<tr>\n<td>Heavy radial, shock, shaft deflection<\/td>\n<td>Spherical roller<\/td>\n<td>Speed limit, minimum load, cost<\/td>\n<\/tr>\n<tr>\n<td>Very heavy radial, no axial, high speed, axial float needed<\/td>\n<td>Cylindrical roller (NU\/N)<\/td>\n<td>Needs a separate axial locating bearing<\/td>\n<\/tr>\n<tr>\n<td>Overwhelmingly axial, vertical shaft<\/td>\n<td>Thrust ball \/ thrust roller \/ spherical roller thrust<\/td>\n<td>No radial capacity; minimum load<\/td>\n<\/tr>\n<tr>\n<td>Very limited radial space<\/td>\n<td>Needle roller or thin-section<\/td>\n<td>Shaft hardness, alignment sensitivity<\/td>\n<\/tr>\n<tr>\n<td>Combined load + tilting moment, slow rotation<\/td>\n<td>Four-point contact \/ crossed roller slewing<\/td>\n<td>Bolt pattern, mounting-face flatness<\/td>\n<\/tr>\n<tr>\n<td>Rolling mill \/ very heavy radial, moderate speed<\/td>\n<td>Four-row tapered or four-row cylindrical<\/td>\n<td>Lubrication, sealing, mounting sequence<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Browse our <a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/deep-groove-ball-bearings\/\">deep groove ball bearings<\/a>,<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/tapered-roller-bearings\/\">tapered roller bearings<\/a>,<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/spherical-roller-bearings\/\">spherical roller bearings<\/a>,<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/cylindrical-roller-bearings\/\">cylindrical roller bearings<\/a>,<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/thrust-ball-bearings\/\">thrust bearings<\/a>,<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/thin-section-bearings\/\">thin-section bearings<\/a> and<br \/>\n<a href=\"https:\/\/www.lycbearingcn.com\/ru\/products\/slewing-bearings\/\">slewing bearings<\/a> to see the ranges available for each family<br \/>\nin the matrix.<\/p>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/07\/Open-thin-section-bearings.jpg\" alt=\"Open thin section bearing\" \/><figcaption>When radial space is the binding constraint, thin-section and needle designs deliver capacity in a very small cross-section.<\/figcaption><\/figure>\n<h2>Send us the load case, get a sized comparison<\/h2>\n<p>The method above is exactly what our engineers run when a customer sends an application. Give us<br \/>\n<em>Fr<\/em>, <em>Fa<\/em>, speed and duty cycle, target life, misalignment, temperature, and your<br \/>\nenvelope limit, and we will compute <em>P<\/em> and <em>L<sub>10h<\/sub><\/em> for the viable types,<br \/>\nthen quote the shortlist side by side &mdash; including what would have to change in the surrounding<br \/>\nstructure. <a href=\"https:\/\/www.lycbearingcn.com\/ru\/contact-us\/\">Contact our engineering team<\/a> with your operating data.<\/p>\n<h2>Related reading<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/crossed-roller-vs-ball-slewing-bearings\/\">Crossed Roller vs Ball Slewing Bearings: When to Choose<\/a> &mdash; the same decision-matrix approach applied to slewing rings.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/the-types-of-ball-bearings\/\">The Types of Ball Bearings<\/a> &mdash; a closer look at the ball-bearing families in the matrix.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/how-to-choose-the-right-slewing-bearing\/\">How to Choose the Right Slewing Bearing<\/a> &mdash; building the load case for slow-rotating structures.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/tapered-roller-bearing-selection-guide-and-luoyang-inno-bearings-customized-service\/\">Tapered Roller Bearing Selection Guide<\/a> &mdash; paired arrangements, preload and endplay.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/spherical-cylindrical-roller-bearings-the-core-solution-for-industrial-transmission\/\">Spherical &amp; Cylindrical Roller Bearings<\/a> &mdash; the two high-capacity roller families compared.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/the-importance-of-bearing-clearance\/\">\u0412\u0430\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0437\u043e\u0440\u0430 \u0432 \u043f\u043e\u0434\u0448\u0438\u043f\u043d\u0438\u043a\u0430\u0445<\/a> &mdash; why CN, C3 and C4 matter after mounting.<\/li>\n<li><a href=\"https:\/\/www.lycbearingcn.com\/ru\/news\/what-is-the-difference-between-rolling-bearings-and-slewing-bearings\/\">Rolling Bearings vs Slewing Bearings<\/a> &mdash; where the two product families diverge.<\/li>\n<\/ul>\n<figure>\n  <img decoding=\"async\" src=\"https:\/\/www.lycbearingcn.com\/wp-content\/uploads\/2026\/06\/cross-roller-slewing-bearing-2.png\" alt=\"Crossed roller slewing bearing\" \/><figcaption>For combined load plus tilting moment at low speed, crossed roller slewing rings take over from conventional shaft bearings.<\/figcaption><\/figure>\n<h2>Frequently Asked Questions<\/h2>\n<h3>What is the first thing to determine when choosing a bearing type?<\/h3>\n<p>The direction and ratio of the load. Compute Fa\/Fr: pure radial points to cylindrical or needle rollers, combined load to deep groove, angular contact, tapered or spherical types, and predominantly axial load to thrust bearings. Then apply speed, misalignment, envelope and life as successive filters.<\/p>\n<h3>Are roller bearings always stronger than ball bearings?<\/h3>\n<p>No. Roller bearings carry more radial load for the same envelope because line contact spreads the load, but ball bearings run faster, cooler, quieter and cheaper. Strength is conditional on load direction, speed and alignment, so a spherical roller bearing is a poor substitute on a high-speed precision spindle.<\/p>\n<h3>What is equivalent dynamic load P and why does it matter?<\/h3>\n<p>P is the single radial load that would produce the same fatigue life as the actual combined radial and axial loading. It is computed as fd*(X*Fr + Y*Fa), where X and Y come from the bearing type and the Fa\/Fr ratio relative to the limit e. Because life scales with (C\/P)^p, a small error in P becomes a large error in predicted life.<\/p>\n<h3>Why do ball and roller bearings use different life exponents?<\/h3>\n<p>ISO 281 uses p = 3 for ball bearings (point contact) and p = 10\/3 for roller bearings (line contact), reflecting how contact stress and fatigue life scale with load. The higher roller exponent means roller life is more sensitive to the C\/P ratio.<\/p>\n<h3>What is the C3 clearance and when do I need it?<\/h3>\n<p>C3 denotes greater-than-normal internal radial clearance. Interference fits and a hotter inner ring consume clearance during operation, so C3 (or C4) is used for electric motors, hot applications, heavy interference fits and many roller bearings. Choosing the wrong class can cause thermal runaway and seizure even when the size is correct.<\/p>\n<h3>Can I replace a deep groove ball bearing with a spherical roller bearing of the same bore?<\/h3>\n<p>Sometimes, but not as a blind swap. The spherical roller bearing handles misalignment and much higher radial load, but it has a lower speed limit, higher friction, a different axial-load factor Y, and usually a different width. Re-run the P and L10h calculation and check the housing fits and speed before substituting.<\/p>\n<h3>How much misalignment can each bearing type tolerate?<\/h3>\n<p>As an order of magnitude: tapered roller and angular contact pairs only a few arcminutes (~0.05 deg or less), deep groove ball around 0.15 deg, four-point contact around 0.1 deg, self-aligning ball up to ~2 deg, and spherical roller up to ~1.5 deg. Confirm exact values in the manufacturer&#x27;s catalogue.<\/p>\n<h3>What should I send a supplier to get a correct bearing recommendation?<\/h3>\n<p>Radial and axial loads (including shock), speed and duty cycle, target L10h life, expected misalignment, operating temperature and lubricant, sealing needs, and the bore\/OD\/width envelope. With those inputs an engineer can compute P, required C and the shortlist of viable types instead of guessing from a part number.<\/p>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the first thing to determine when choosing a bearing type?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The direction and ratio of the load. Compute Fa\/Fr: pure radial points to cylindrical or needle rollers, combined load to deep groove, angular contact, tapered or spherical types, and predominantly axial load to thrust bearings. 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With those inputs an engineer can compute P, required C and the shortlist of viable types instead of guessing from a part number.\"}}]}<\/script><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Article\", \"headline\": \"Bearing Type Selection: A Decision Matrix with a Worked Example\", \"description\": \"Bearing type selection, made numeric: a decision matrix and worked example computing equivalent load, L10 life and required C for three candidate bearings.\", \"author\": {\"@type\": \"Organization\", \"name\": \"LUOYANG INNO BEARING CO., LTD\"}, \"publisher\": {\"@type\": \"Organization\", \"name\": \"LUOYANG INNO BEARING CO., LTD\"}, \"mainEntityOfPage\": {\"@type\": \"WebPage\", \"@id\": \"https:\/\/www.lycbearingcn.com\/news\/bearing-type-selection-decision-matrix\/\"}}<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>Bearing type selection, made numeric: a decision matrix and worked example computing equivalent load, L10 life and required C for three candidate bearings.<\/p>","protected":false},"author":1,"featured_media":2375,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9,10,12,11],"_links":{"self":[{"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/posts\/2476"}],"collection":[{"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/comments?post=2476"}],"version-history":[{"count":1,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/posts\/2476\/revisions"}],"predecessor-version":[{"id":2477,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/posts\/2476\/revisions\/2477"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/media\/2375"}],"wp:attachment":[{"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/media?parent=2476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/categories?post=2476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lycbearingcn.com\/ru\/wp-json\/wp\/v2\/tags?post=2476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}