YBN 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
YBN 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

Type, code No.	Shielded type	Sealed type
	Non-contact type	Non-contact type	Contact type	Tight sealing type
YBN	ZZ	2RZ	2RS	2RS1
Construction
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

Function of YBN 2RS1 design	YBN 2RS1 seal	Other brand seal
	Compared with other brands, YBN seal material gel content is higher, more pliable and more elastic, so the wear resistance is stronger. It greatly enhance the bearing seal life

● Verification of bearing dust proof performance

Dust proof performance comparison experiment between YBN bearing and a well-known brand bearing. Immerge the two brands of bearing in the dust after the operation, and evaluate them according to the operating cycle. Result as follow:

● Verification of bearing waterproof performance

Put the bearing in the special experimental device and make seal, inject 30-50 ml of water in the device, and adjust the pressure value to make it continuous change from 0 MPa to 0.2 MPa. YBN 2RS1 bearings under 0.2MPa pressure are not leaking that means the bearing can withstand 5m-10m of water pressure with no leakage.