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1304 Self-Aligning Ball Bearing Specifications
| Designation | 1304 |
|---|---|
| Series | 1300 light wide series |
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Type | Double row self-aligning ball bearing, cylindrical bore |
| Standard | ISO 15 boundary dimensions |
| FOB price (USD) | 0.88 - 0.91 per piece · MOQ 10 · lead time 1-2 days |
Overview
The 1304 is a double row self-aligning ball bearing with a 20 mm bore, 52 mm outer diameter and 15 mm width. Its two ball rows run in a common spherical outer raceway, so the bearing absorbs shaft deflection and housing misalignment instead of transferring it to the shaft or seals. It is dimensionally interchangeable with other 1304 bearings made to ISO 15.
Where the 1300 series fits
The 1300 series is a light wide series. It keeps the shaft diameter of the corresponding bore size while offering a different outer ring section, so it suits layouts where space around the housing or the required radial capacity rules out the neighbouring series.
Typical applications
- Industrial fans and blowers
- Conveyor pulleys and line shafting
- Textile and woodworking machinery
- Agricultural implements
- Light gearboxes where shaft deflection is expected
Cross-reference
Dimensionally interchangeable with SKF 1304, NSK 1304, FAG 1304 and NTN 1304. Brand names are used for cross-reference only; Ultrabearing is an independent manufacturer and is not affiliated with these brands.
Options on request
Clearance C0 or C3, precision P0 or P6, steel or brass cage, open or sealed. Tapered bore version available with adapter sleeve.
Frequently asked questions
What are the dimensions of a 1304 bearing?
A 1304 self-aligning ball bearing has a 20 mm bore, 52 mm outer diameter and 15 mm width.
Can I replace a 1304 with another brand’s 1304?
Yes, dimensionally. The envelope is fixed by ISO 15, so any 1304 mounts on the same shaft and housing. Cage material, clearance and precision grade may differ and should be confirmed for the application.
Load ratings and lead time: send the part number and application details, and we confirm the load rating, clearance and delivery schedule within 24 hours.
