SR8R
Stainless Steel R Series Inch Size Miniature Ball Bearings
The SR8R designation defines the size and shape of this ball bearing. Materials, clearances and tolerances can be tailored to your application during quotation — the specifications below are the standard configuration.
Specifications — SR8R
Bearing Dimensions
| Bore d (mm) | 12.7 |
|---|---|
| Width B (mm) | 6.35 |
| Chamfer r min | 0.4 |
Load Ratings
| Dynamic Cr (KN) | 3.93 |
|---|---|
| Static Cor (KN) | 2.23 |
Design & Construction
| Serie | Stainless Steel R Series Inch Size Miniature Ball Bearings |
|---|---|
| Material | AISI 440C stainless steel |
| Bearing type | Ball bearing |
| Ball Size (mm) | 4.762 |
| Ball NO. | 8 |
Further Specifications
| O.D D (mm) | 28.575 |
|---|
Lubrication & Operating Temperature
- Open version: oil lubrication recommended for maximum speed.
- Sealed version (2RS): maintenance-free grease lubrication.
- Standard greases typically limit continuous operation to about 120 °C; the AISI 440C stainless rings and cage permit up to 150 °C.
- Food-grade (H1) or high-temperature lubrication available on request — contact us.
Typical Applications
Every batch is inspected for dimensional tolerance, noise and vibration levels before shipment.
About the SR8R
The SR8R is a R Series stainless steel bearing manufactured by ZGBK Bearings (Wuxi, China). It features a width of 6.35 mm. Built from corrosion-resistant AISI 440C stainless steel, it is suited to food processing, medical, marine and chemical equipment where reliability in harsh environments matters. Full specifications are listed below.
ZGBK manufactures the SR8R as part of the Stainless Steel R Series Inch Size Miniature Ball Bearings, using AISI 440C stainless steel for superior corrosion resistance in wet, chemical and food-grade environments. Every batch is inspected for dimensional tolerance, noise and vibration levels before shipment. As a direct factory in Wuxi, China, we support small-batch orders, custom dimensions and fast samples for qualified buyers.