Configuration
Full designation, seals or shields, accuracy, clearance, cage, material and any matched arrangement.
BEARING SPECIFICATION / 7308
7308 Angular Contact Ball Bearing
40 × 90 × 23 mm · Combined loads. Controlled axial support. Compare the sourced reference data and specify your SANJ requirement.
Angular Contact Ball Bearings
7308 at a glance
7308 identifies a angular contact ball bearing reference with 40 mm bore, 90 mm outside diameter and 23 mm overall width or height.
- Bore / d
- 40 mm
- Outside / D
- 90 mm
- Width / B
- 23 mm
A contact angle supports combined radial and axial loads. A single row supports axial load in one direction; paired arrangements require preload and matching to be specified.
Reference configuration: 7308
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.
Ratings below belong to the identified JTEKT / Koyo source record. SANJ material, internal design, performance and supply scope require a confirmed quotation and datasheet.
REFERENCE SPECIFICATION
All the details.
One clear source.
Full factual values from the source designation 7308. Mounting dimensions and reference mass relate to that design; they must be checked against the final SANJ drawing.
Load ratings: kN · dimensions: mm · speed: min⁻¹ · mass: kg
| Parameter | Reference value |
|---|---|
| d | 40 mm |
| D | 90 mm |
| B | 23 mm |
| r(min.) | 1.5 mm |
| r1(min.) | 1 mm |
| Basic load ratings : Cr | 61.0 kN |
| Basic load ratings : C0r | 32.9 kN |
| Fatigue load limit : Cu | 2.30 kN |
| factor : f0 | - |
| Limiting speeds(Grease lub.) | 7300 min-1 |
| Limiting speeds(Oil lub.) | 9600 min-1 |
| Load center spread : a | 30.3 mm |
| da(min.) | 48.5 mm |
| Da(max.) | 81.5 mm |
| ra(max.) | 1.5 mm |
| Mass(Refer.) | 0.657 kg |
SELECTION CONTEXT
Match the bearing
to its duty.
7308 belongs to the angular contact ball bearings family. Its reference envelope is 40 mm bore, 90 mm outside diameter and 23 mm overall width or height.
A contact angle supports combined radial and axial loads. A single row supports axial load in one direction; paired arrangements require preload and matching to be specified.
For a manufacturing enquiry, provide the complete designation and operating conditions. Matching the dimensional envelope alone does not confirm interchangeability or equivalent performance.
Is the same size a direct replacement?
No. Matching 40 × 90 × 23 mm establishes the boundary dimensions. The full designation, tolerances, clearance, contact angle or roller arrangement, seals, cage, lubrication and performance must also be checked.
Understand bearing load ratings →PREPARE A USEFUL ENQUIRY
Specify what the model
number leaves open.
A complete brief reduces assumptions and gives the quotation a clear technical basis.
Operating duty
Radial and axial loads, speed, temperature, lubrication, fits, environment and expected service.
Supply requirement
Quantity, destination, packing, inspection records, drawing approval and delivery requirement.
CONTINUE COMPARING
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