Bearings
Ball Bearings
Imperial Ball Bearings
Quick Code: BB-430555
SR155-ZZ Budget Shielded Stainless Steel Miniature Ball Bearing 3.96875mm x 7.9375mm x 3.175mm
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Product Specification
Brand
Budget
Inside Dia
3.96875mm = 5/32inch
Outside Dia
7.9375mm = 5/16inch
Sealing
Shielded
Width
3.175mm = 1/8inch
Reference
SR155-ZZ
Equivalent to:
WR155-2Z
Quick Order Code
BB-430555
Product Description
The SR155-ZZ Budget Shielded Stainless Steel Miniature Ball Bearing is a precision-engineered compact bearing designed for applications requiring small, reliable, and corrosion-resistant rotational performance. Manufactured to imperial measurements, this miniature bearing offers exceptional versatility and protection for delicate mechanical systems.
Key Features:
- Stainless steel construction for superior corrosion resistance
- Shielded type with metal shields to protect against dirt and contaminants
- Compact imperial sizing: 5/32 inch inside diameter
- Single row deep groove ball bearing design
- Precise dimensions: 3.96875mm x 7.9375mm x 3.175mm
Technical Specifications:
- Brand: Budget
- Inside Diameter: 3.96875mm (5/32 inch)
- Outside Diameter: 7.9375mm (5/16 inch)
- Width: 3.175mm (1/8 inch)
- Sealing Type: Shielded (ZZ)
- Material: Stainless Steel
Typical Applications:
- Precision medical equipment
- Dental and surgical instruments
- Small robotics and automation systems
- Aerospace and defense electronics
- High-precision scientific instruments
- Miniature motors and actuators
- Marine and saltwater environment applications
The metal shields provide excellent protection against environmental contaminants while helping to retain lubrication. Its stainless steel construction ensures durability in challenging environments, making it an ideal choice for applications requiring high reliability and resistance to corrosion.

