NJ2311 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with NJ2311. 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.
NJ2311 dimensions and recorded technical data
The recorded NJ2311 base designation measures 55×120×43 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from KOYO. It does not assign the same dimensions or operating ratings to every suffix.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 20 recorded variants are listed. A dash means the value is missing, not zero.
Catalogue parameters for NJ2311
Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.
Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.
KOYO NJ2311 — 26 recorded parameters
Cylindrical roller bearing
Reference: JTEKT / Koyo catalogue; source snapshot 2026-09-02.
Read the complete suffix and recorded construction. Similar dimensions do not prove identical seals, clearance, precision or material.
Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.
Technical Data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| d | Not separately recorded | 55 mm |
| D | Not separately recorded | 120 mm |
| B | Not separately recorded | 43 mm |
| R(Min.) | Not separately recorded | 2 mm |
| R1(Min.) | Not separately recorded | 2 mm |
| Fw | Not separately recorded | 70.5 mm |
| Ew | Not separately recorded | - mm |
| Basic Load Ratings : Cr | Not separately recorded | 185 kN |
| Basic Load Ratings : C0R | Not separately recorded | 162 kN |
| Fatigue Load Limit : Cu | Not separately recorded | 24.6 kN |
| Limiting Speeds(Grease Lub.) | Not separately recorded | 4500 min-1 |
| Limiting Speeds(Oil Lub.) | Not separately recorded | 6800 min-1 |
| Sd1 | Not separately recorded | - mm |
| B1 | Not separately recorded | - mm |
| B2 | Not separately recorded | - mm |
| Da(Min.) | Not separately recorded | - mm |
| Db(Min.) | Not separately recorded | 64 mm |
| Db(Max.) | Not separately recorded | 69 mm |
| Dc(Min.) | Not separately recorded | - mm |
| Dd(Min.) | Not separately recorded | - mm |
| Da(Max.) | Not separately recorded | 111 mm |
| Db(Max.) | Not separately recorded | - mm |
| Db(Min.) | Not separately recorded | - mm |
| Ra(Max.) | Not separately recorded | 2 mm |
| Rb(Max.) | Not separately recorded | 2 mm |
| Mass(Refer.) | Not separately recorded | 2.17 kg |
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) |
|---|---|---|---|---|---|---|
| KOYONJ2311Cylindrical roller bearing |
| 185 kN | 162 kN | — | 4500 rpmLimiting Speeds(Grease Lub.): 4500 min-1Limiting Speeds(Oil Lub.): 6800 min-1 | 2.17 kg2170 g |
| SKFNJ 2311 ECMLSingle row cylindrical roller bearing, NJ design |
| 232 kN | 232 kN | 6000 rpm | 11000 rpm | 2.54 kg2540 g |
| SKFNJ 2311 ECML/C3Single row cylindrical roller bearing, NJ design |
| 232 kN | 232 kN | 6000 rpm | 11000 rpm | 2.48 kg2480 g |
| SKFNJ 2311 ECPSingle row cylindrical roller bearing, NJ design |
| 232 kN | 232 kN | 6000 rpm | 7000 rpm | 2.26 kg2260 g |
| SKFNJ 2311 ECP/C3Single row cylindrical roller bearing, NJ design |
| 232 kN | 232 kN | 6000 rpm | 7000 rpm | 2.26 kg2260 g |
| SKFNJ 2311 ECP/C4Single row cylindrical roller bearing, NJ design |
| 232 kN | 232 kN | 6000 rpm | 7000 rpm | 2.21 kg2210 g |
| FAGNJ2311-E-XL-M1Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.46 kg2460 g |
| FAGNJ2311-E-XL-M1-C3Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.46 kg2460 g |
| FAGNJ2311-E-XL-M1-C4Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.46 kg2460 g |
| FAGNJ2311-E-XL-MPAXCylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.48 kg2480 g |
| FAGNJ2311-E-XL-MPAX-C3Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.48 kg2480 g |
| FAGNJ2311-E-XL-MPAX-C4Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.48 kg2480 g |
| FAGNJ2311-E-XL-MPAX-QP51-C4Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.46 kg2460 g |
| FAGNJ2311-E-XL-TVP2Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 8000 rpm | 2.24 kg2240 g |
| FAGNJ2311-E-XL-TVP2-C3Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 8000 rpm | 2.34 kg2340 g |
| FAGNJ2311-E-XL-TVP2-C4Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 8000 rpm | 2.24 kg2240 g |
| FAGNJ2311-E-XL-TVP2-C5Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 8000 rpm | 2.24 kg2240 g |
| INANJ2311-E-XL-M1-J30PC-C3Cylindrical roller bearing |
| 235 kN | 230 kN | 4500 rpm | 10400 rpm | 2.5 kg2500 g |
| NSKNJ2311ETCylindrical roller bearing |
| 247 kN | 233 kN | — | — | — |
| KOYONJ2311RCylindrical roller bearing |
| 251 kN | 233 kN | — | 4500 rpmLimiting Speeds(Grease Lub.): 4500 min-1Limiting Speeds(Oil Lub.): 6700 min-1 | 2.31 kg2310 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 |
|---|---|---|---|---|---|---|
| KOYO NJ2311 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF NJ 2311 ECML | Without | Not recorded | CN | Machined brass | Not recorded | None |
| SKF NJ 2311 ECML/C3 | Without | Not recorded | C3 | Machined brass | Not recorded | None |
| SKF NJ 2311 ECP | Without | Not recorded | CN | Non-metallic | Not recorded | None |
| SKF NJ 2311 ECP/C3 | Without | Not recorded | C3 | Non-metallic | Not recorded | None |
| SKF NJ 2311 ECP/C4 | Without | Not recorded | C4 | Non-metallic | Not recorded | None |
| FAG NJ2311-E-XL-M1 | Not recorded | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | M1 — Two Piece Brass Cage Roller Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-M1-C3 | Not recorded | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | M1 — Two Piece Brass Cage Roller Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-M1-C4 | Not recorded | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | M1 — Two Piece Brass Cage Roller Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-MPAX | Not recorded | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | MPAX — One Piece Brass Cage Lip Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-MPAX-C3 | Not recorded | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | MPAX — One Piece Brass Cage Lip Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-MPAX-C4 | Not recorded | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | MPAX — One Piece Brass Cage Lip Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-MPAX-QP51-C4 | Not recorded | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | MPAX — One Piece Brass Cage Lip Guided | Not recorded | Not recorded |
| FAG NJ2311-E-XL-TVP2 | Not recorded | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | TVP2 — Solid Window Cage made from PA66 | Not recorded | Not recorded |
| FAG NJ2311-E-XL-TVP2-C3 | Not recorded | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | TVP2 — Solid Window Cage made from PA66 | Not recorded | Not recorded |
| FAG NJ2311-E-XL-TVP2-C4 | Not recorded | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | TVP2 — Solid Window Cage made from PA66 | Not recorded | Not recorded |
| FAG NJ2311-E-XL-TVP2-C5 | Not recorded | PN — Normal (ISO 492:2023) | C5 (Group 5) — Internal clearance larger than C4 | TVP2 — Solid Window Cage made from PA66 | Not recorded | Not recorded |
| INA NJ2311-E-XL-M1-J30PC-C3 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK NJ2311ET | Not recorded | Not recorded | Not recorded | Polyamide 66 | Not recorded | Not recorded |
| KOYO NJ2311R | 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.
NJ2311
Cylindrical roller bearing
View full technical record →SKFNJ 2311 ECML
Single row cylindrical roller bearing, NJ design
View full technical record →SKFNJ 2311 ECML/C3
Single row cylindrical roller bearing, NJ design
View full technical record →SKFNJ 2311 ECP
Single row cylindrical roller bearing, NJ design
View full technical record →SKFNJ 2311 ECP/C3
Single row cylindrical roller bearing, NJ design
View full technical record →SKFNJ 2311 ECP/C4
Single row cylindrical roller bearing, NJ design
View full technical record →NSKNJ2311ET
Cylindrical roller bearing
View full technical record →FAGNJ2311-E-XL-M1
Cylindrical roller bearing
View full technical record →FAGNJ2311-E-XL-M1-C3
Cylindrical roller bearing
View full technical record →FAGNJ2311-E-XL-M1-C4
Cylindrical roller bearing
View full technical record →INANJ2311-E-XL-M1-J30PC-C3
Cylindrical roller bearing
View full technical record →FAGNJ2311-E-XL-MPAX
Cylindrical 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.