2304 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 2304. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
On this page5 sections ⌄
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.
2304 dimensions and recorded technical data
The recorded 2304 base designation measures 20×52×21 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from NSK, 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. 8 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) |
|---|---|---|---|---|---|---|
| NSK2304Self-aligning ball bearing |
| 20.3 kN | 4.7 kN | — | — | 0.21 kg210 g |
| KOYO2304Self-aligning ball bearing |
| 22.5 kN | 4.65 kN | — | 11000 rpmLimiting Speeds(Grease Lub.): 11000 min-1Limiting Speeds(Oil Lub.): 15000 min-1 | 0.209 kg209 g |
| SKF2304 E-2RS1TN9Self-aligning ball bearing with seals on both sides |
| 14.3 kN | 4 kN | 24000 rpm | 9000 rpm | 0.205 kg205 g |
| SKF2304 MSelf-aligning ball bearing |
| 18.2 kN | 4.75 kN | 26000 rpm | 19000 rpm | 0.227 kg227 g |
| SKF2304 TN9Self-aligning ball bearing |
| 18.2 kN | 4.75 kN | 26000 rpm | 19000 rpm | 0.22 kg220 g |
| FAG2304-2RS-TVHSelf-aligning ball bearing |
| 12.7 kN | 3.35 kN | — | 9400 rpm | 0.212 kg212 g |
| FAG2304-2RS-TVH-C3Self-aligning ball bearing |
| 12.7 kN | 3.35 kN | — | 9400 rpm | 0.212 kg212 g |
| NSK2304KSelf-aligning ball bearing |
| 20.3 kN | 4.7 kN | — | — | — |
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 |
|---|---|---|---|---|---|---|
| NSK 2304 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 2304 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 2304 E-2RS1TN9 | Seal on both sides | Not recorded | CN | Non-metallic | Bearing steel | Grease |
| SKF 2304 M | Without | Not recorded | CN | Machined brass | Bearing steel | None |
| SKF 2304 TN9 | Without | Not recorded | CN | Non-metallic | Bearing steel | None |
| FAG 2304-2RS-TVH | 2RS — Contact seal on both sides | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | TVH — Solid cage made of glass-fiber reinforced polyamide PA66 | Not recorded | GA14 — Ball bearing grease, low noise |
| FAG 2304-2RS-TVH-C3 | 2RS — Contact seal on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | TVH — Solid cage made of glass-fiber reinforced polyamide PA66 | Not recorded | GA14 — Ball bearing grease, low noise |
| NSK 2304K | 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.
2304
Self-aligning ball bearing
View full technical record →NSK2304
Self-aligning ball bearing
View full technical record →SKF23040-2CS5K/VT143
Spherical roller bearing with tapered bore, integral sealing and relubrication features
View full technical record →SKF23040-2CS5/VT143
Spherical roller bearing with integral sealing and relubrication features
View full technical record →NSK23040CAME4
Spherical roller bearing
View full technical record →NSK23040CAMKE4
Spherical roller bearing
View full technical record →SKF23040 CC/C2W33
Spherical roller bearing with relubrication features
View full technical record →SKF23040 CC/C3W33
Spherical roller bearing with relubrication features
View full technical record →SKF23040 CC/C4W33
Spherical roller bearing with relubrication features
View full technical record →SKF23040 CCK/C2W33
Spherical roller bearing with tapered bore and relubrication features
View full technical record →SKF23040 CCK/C3W33
Spherical roller bearing with tapered bore and relubrication features
View full technical record →SKF23040 CCK/C4W33
Spherical roller bearing with tapered bore and relubrication features
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.