Bearings
Ball Bearings
Imperial Ball Bearings
Quick Code: BB-138940
SR8 Budget Imperial Stainless Steel Open Ball Bearing 12.7mm x 28.58mm x 6.35mm
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Product Specification
Brand
Budget
Dynamic Load
4180N
Inside Dia
12.7mm = 1/2inch
Outside Dia
28.575mm = 1.1/8inch
RPM Grease
26000
RPM Oil
32000
Sealing
Open
Static Load
2010N
Width
6.35mm = 1/4inch
Reference
SR8
Quick Order Code
BB-138940
Product Description
The SR8 Budget Imperial Stainless Steel Open Ball Bearing is a versatile, precision-engineered component designed for a wide range of mechanical applications where optimal lubrication and performance are critical.
Key Features:
- Single row deep groove ball bearing design
- Open type configuration for unrestricted lubrication
- Stainless steel construction for durability
- Imperial inch measurements: 1/2" x 1-1/8" x 1/4" (12.7mm x 28.58mm x 6.35mm)
- Standard internal clearance
Performance Specifications:
- Dynamic Load Capacity: 4180N
- Static Load Capacity: 2010N
- Maximum RPM (Grease Lubrication): 26,000
- Maximum RPM (Oil Lubrication): 32,000
- Open design allows for free grease flow and optimal lubrication
Typical Applications:
- Agricultural machinery
- Manufacturing equipment
- British and American vintage machinery restoration
- Industrial automation systems
- Precision mechanical engineering
- Automotive and transportation equipment
Specifically designed for imperial measurement systems, this bearing is ideal for matching legacy British machines and modern American equipment. The open design ensures maximum lubrication flexibility, making it perfect for applications requiring consistent and efficient bearing performance.

