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21312 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 21312. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
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Find by measured dimensions
Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.
21312 dimensions and recorded technical data
Use the named dimensions for each complete record below. A generic d×D×B answer is not asserted where the base record is missing, dimension symbols are unverified, or the product uses a different geometry such as a housing or thrust assembly. Suffix records are not substituted for a missing base specification.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 26 recorded variants are listed. A dash means the value is missing, not zero.
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| SKF21312 ESpherical roller bearing with relubrication features |
| 217 kN | 240 kN | 4800 rpm | 6300 rpm | 2.05 kg2050 g |
| SKF21312 E/C3Spherical roller bearing with relubrication features |
| 217 kN | 240 kN | 4800 rpm | 6300 rpm | 2.05 kg2050 g |
| SKF21312 E/C4Spherical roller bearing with relubrication features |
| 217 kN | 240 kN | 4800 rpm | 6300 rpm | 2.04 kg2040 g |
| SKF21312 EKSpherical roller bearing with tapered bore and relubrication features |
| 217 kN | 240 kN | 4800 rpm | 6300 rpm | 2.03 kg2030 g |
| SKF21312 EK/C3Spherical roller bearing with tapered bore and relubrication features |
| 217 kN | 240 kN | 4800 rpm | 6300 rpm | 2.03 kg2030 g |
| FAG21312-E1-XLSpherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.1 kg2100 g |
| FAG21312-E1-XL-C2Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.06 kg2060 g |
| FAG21312-E1-XL-C3Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.06 kg2060 g |
| FAG21312-E1-XL-C4Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.06 kg2060 g |
| FAG21312-E1-XL-KSpherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.036 kg2036 g |
| FAG21312-E1-XL-K-C3Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 2.036 kg2036 g |
| FAG21312-E1-XL-K-TVPBSpherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 1.943 kg1943 g |
| FAG21312-E1-XL-K-TVPB-C3Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 1.943 kg1943 g |
| FAG21312-E1-XL-TVPBSpherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 1.967 kg1967 g |
| FAG21312-E1-XL-TVPB-C3Spherical Roller Bearing |
| 211 kN | 226 kN | 4100 rpm | 6700 rpm | 1.967 kg1967 g |
| TIMKEN21312EJW33Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.95 kg1950 g |
| TIMKEN21312EJW33C2Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.95 kg1950 g |
| TIMKEN21312EJW33C3Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.95 kg1950 g |
| TIMKEN21312EJW33C4Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.95 kg1950 g |
| TIMKEN21312KEJW33Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.92 kg1920 g |
| TIMKEN21312KEJW33C3Spherical roller bearing |
| 225 kN | 219 kN | — | — | 1.92 kg1920 g |
| NSK21312EAE4Spherical roller bearing |
| 238 kN | 244 kN | — | — | 1.98 kg1980 g |
| NSK21312EAKE4Spherical roller bearing |
| 238 kN | 244 kN | — | — | — |
| KOYO21312RZSpherical roller bearing |
| 210 kN | 193 kN | — | 3900 rpmLimiting Speeds(Grease Lub.): 3900 min-1Limiting Speeds(Oil Lub.): 5100 min-1 | 2.11 kg2110 g |
| KOYO21312RZK+AHX312Spherical roller bearing |
| 210 kN | 193 kN | — | 3900 rpmLimiting Speeds(Grease Lub.): 3900 min-1Limiting Speeds(Oil Lub.): 5100 min-1 | 2.27 kg2270 g |
| KOYO21312RZK+H312XSpherical roller bearing |
| 210 kN | 193 kN | — | 3900 rpmLimiting Speeds(Grease Lub.): 3900 min-1Limiting Speeds(Oil Lub.): 5100 min-1 | 2.5 kg2500 g |
Compare recorded seals, clearance, precision and materials
Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.
| Brand / designation | Closure | Original precision | Clearance | Cage | Material | Lubricant |
|---|---|---|---|---|---|---|
| SKF 21312 E | Without | Normal | CN | Sheet metal | Not recorded | None |
| SKF 21312 E/C3 | Without | Not recorded | C3 | Sheet metal | Not recorded | None |
| SKF 21312 E/C4 | Without | Not recorded | C4 | Sheet metal | Not recorded | None |
| SKF 21312 EK | Without | Normal | CN | Sheet metal | Not recorded | None |
| SKF 21312 EK/C3 | Without | Not recorded | C3 | Sheet metal | Not recorded | None |
| FAG 21312-E1-XL | Not recorded | Not recorded | CN (Group N) — Normal internal clearance | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-C2 | Not recorded | Not recorded | C2 (Group 2) — Internal clearance smaller than CN | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-C3 | Not recorded | Not recorded | C3 (Group 3) — Internal clearance larger than CN | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-C4 | Not recorded | Not recorded | C4 (Group 4) — Internal clearance larger than C3 | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-K | Not recorded | Not recorded | CN (Group N) — Normal internal clearance | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-K-C3 | Not recorded | Not recorded | C3 (Group 3) — Internal clearance larger than CN | JPA — Sheet metal cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-K-TVPB | Not recorded | Not recorded | CN (Group N) — Normal internal clearance | TVPB — Plastic cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-K-TVPB-C3 | Not recorded | Not recorded | C3 (Group 3) — Internal clearance larger than CN | TVPB — Plastic cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-TVPB | Not recorded | Not recorded | CN (Group N) — Normal internal clearance | TVPB — Plastic cage | Not recorded | Not recorded |
| FAG 21312-E1-XL-TVPB-C3 | Not recorded | Not recorded | C3 (Group 3) — Internal clearance larger than CN | TVPB — Plastic cage | Not recorded | Not recorded |
| TIMKEN 21312EJW33 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 21312EJW33C2 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 21312EJW33C3 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 21312EJW33C4 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 21312KEJW33 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 21312KEJW33C3 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| NSK 21312EAE4 | Not recorded | Not recorded | CN | Pressed steel | Not recorded | Not recorded |
| NSK 21312EAKE4 | Not recorded | Not recorded | CN | Pressed steel | Not recorded | Not recorded |
| KOYO 21312RZ | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 21312RZK+AHX312 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 21312RZK+H312X | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
How to compare these values
- Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
- Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
- C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
- Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
- A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.
Related prefix matches — other model numbers may appear
These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.
SKF
21312 E
Spherical roller bearing with relubrication features
View full technical record →FAG21312-E1-XL
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-C2
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-C3
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-C4
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-K
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-K-C3
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-K-TVPB
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-K-TVPB-C3
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-TVPB
Spherical Roller Bearing
View full technical record →FAG21312-E1-XL-TVPB-C3
Spherical Roller Bearing
View full technical record →NSK21312EAE4
Spherical roller bearing
View full technical record →Check the drawing before substituting
Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.
Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.