Bearings
Ball Bearings
Imperial Ball Bearings
Quick Code: BB-138941
SR8-ZZ Budget Imperial Stainless Steel Shielded Ball Bearing 12.7mm x 28.58mm x 7.94mm
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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
Shielded
Static Load
2010N
Width
7.9375mm = 5/16inch
Reference
SR8-ZZ, SR8-2Z
Quick Order Code
BB-138941
Product Description
The SR8-ZZ Budget Imperial Stainless Steel Shielded Ball Bearing is a versatile and robust precision component designed for a wide range of industrial and mechanical applications. Crafted to Imperial measurements, this bearing is particularly suited for matching British and American machinery.
Key Features:
- Single row deep groove ball bearing
- Stainless steel construction with metal shields
- Standard clearance design
- Shielded type for enhanced protection
Technical Specifications:
- Inside Diameter: 12.7mm (1/2 inch)
- Outside Diameter: 28.575mm (1-1/8 inch)
- Width: 7.9375mm (5/16 inch)
- Dynamic Load Rating: 4,180N
- Static Load Rating: 2,010N
- Maximum RPM: 26,000 (Grease), 32,000 (Oil)
Benefits:
- Metal shields protect against dirt and contamination
- Helps contain lubricant and grease
- Moderately easy to maintain
- Versatile design suitable for multiple applications
Typical Applications:
- Agricultural equipment
- Garden machinery
- Manufacturing equipment
- Precision mechanical systems
- Restoration of vintage British and American machinery
References: SR8-ZZ, SR8-2Z
Ideal for engineers, maintenance professionals, and hobbyists requiring a reliable, high-performance imperial ball bearing with excellent protection and durability.
Product Reviews
Iain M 
07 August 23
I use these in the blade guide rollers on a bandsaw mill. They last at least 3 times longer than carbon steel bearings.
07 August 23
I use these in the blade guide rollers on a bandsaw mill. They last at least 3 times longer than carbon steel bearings.
Iain M 09 January 25
We use these bearings in a harsh environment in blade support spindles on a portable sawmill. Water and sawdust were destroying carbon steel bearings in under a Month. Switching to St/St has reduced maintenance dramatically.
09 January 25
We use these bearings in a harsh environment in blade support spindles on a portable sawmill. Water and sawdust were destroying carbon steel bearings in under a Month. Switching to St/St has reduced maintenance dramatically.
