Research & Development>Anti-dust and anti-water bearings.
Anti-dust and anti-water bearings.
The performance of sealing is vital to the cleanliness of the lubricant and the overall service life of the bearing arrangement. Integral bearing seals must be able to keep contaminants out and lubricant in the bearing cavity.

● Inner ring seal groove types

V-groove L-groove
HCH bearings give priority to adopt “V” type seal groove, which have better dustproof ability Other bearings for electric power tools adopt “L” type seal groove, which have general dustproof effect

●Shield and seals

Type, code No. Shielded type Sealed type
Non-contact type Non-contact type Contact type Tight sealing type
Torque Low Low Medium Higher torque than 2RS
Dust proofing Very good Better than ZZ-type Good Excellent
Water proofing Poor Poor Good Excellent
High speed capacity Same as open type Same as open type Better than 2RS1 Good

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