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Technology Guide

Sealing solutions for single row deep groove ball bearings

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Nouxinde supplies the most popular sizes of single row deep groove ball bearings capped with a seal or shield on one or both sides. Open bearings are suitable for high to very high speeds. Deep groove ball bearings with the suffix 2Z (ZZ) have gap seals on both sides and sre suitable for high speeds. Bearings with the suffix 2RS have lip seals on both sides and are suitable for moderate speeds.
 

Performance comparison of seal deep groove ball bearing

Specifications
Features
with shield with sealing ring
Non-contact type Non-contact type Contact type
2Z 2RZ 2RS
Friction torque Small Small Large
High speed Relatively good Good Restricted because of contact
Grease seal Type Relatively good Better than 2Z type Better than 2RZ when the rotation speed is low
Dustproof Relatively good Better than 2Z type, inferior to 2RS Quite good
Application temperature scope -30 -- 110°C -30 -- 110°C

Note: here is the application temperature scope of standard bearings. Changes of lubricating grease type and sealing ring material may extend the application Scope.

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