Designed specifically for the North American and UK markets, our SFR4-ZZ (or R4-ZZ) Inch Series Stainless Steel Bearings meet strict imperial dimensions. Combining the anti-rust capabilities of stainless steel with the convenience of an outer flange, this standard US-size bearing is ideal for legacy equipment maintenance and modern precision engineering.

Key Features:

Exact Imperial Dimensions: Fully compatible with US standard machinery requiring a 1/4 inch shaft diameter.

Premium Anti-Rust Performance: Ideal for outdoor equipment or machinery that requires regular washdowns without worrying about rust.

Optimized Internals: Specially processed raceways ensure ultra-low friction, minimizing power loss and heat generation.

Long Service Life: Double shielded to seal out dirt, ensuring reliable performance in harsh industrial environments.

Typical Applications:

Food Processing & Packaging Equipment (US Standard)

Marine Instrumentation & Fishing Reels

Handheld Power Tools & Industrial Pumps

Aerospace Components & Remote Controlled (RC) Models

Technical Specifications:

Model: SFR4-ZZ (Flanged) / R4-ZZ (Standard)

Bore Diameter (d): 1/4 inch (6.35 mm)

Outer Diameter (D): 5/8 inch (15.875 mm)

Width (B): 0.196 inch (4.978 mm)

Material: AISI 440C Stainless Steel (AISI 304/316 optional)