Overview
The Standard SNW 20X3.438 adapter assembly is a precision-engineered bearing adapter sleeve designed for industrial machinery and power transmission applications. With a 3-7/16″ shaft bore size, this adapter provides a secure interface between shafts and ball or roller bearing assemblies. Manufactured to exacting tolerances, it delivers the durability and repeatability required in demanding industrial environments.
Key Features
- 3-7/16″ (3.438″) shaft bore diameter
- SNW series standard adapter sleeve design
- Compatible with common ball and roller bearing series
- Precision-machined construction for accurate fit
- Suitable for motor, pump, and machinery mounting applications
Technical Specifications
- Bore Diameter: 3-7/16″ (3.438″)
- Part Number: 20X3.438 / SNW-20
- Product Type: Adapter Sleeve
- Standard Compatibility: 1200K and 1300K series ball bearings, 22200K series roller bearings
- Condition: New in Box
Typical Applications
- Motor shaft coupling and mounting
- Pump and compressor bearing installations
- Industrial machinery power transmission
- Equipment re-sheaving and bearing replacements
- OEM and aftermarket maintenance applications
Compatibility & Replacements
Compatible With
- SKF 1200K and 1300K series ball bearings
- SKF 22200K series roller bearings
- Standard industrial shaft sizes 3-7/16″
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering.
Works With
- Motor and pump bearing assembly systems
- Standard SNW adapter ecosystems and mounting schemes
- Industrial power transmission equipment














