ER-18C Performance Cylindrical OD Bearing (Pack of 25pcs) 1/4-20B The clip-on chuck feature eliminates

The clip-on chuck feature eliminates the need to keep the chuck constantly engaged by hand during filling operations

Fibreglass tensile cord provides high strength

and web with spokes

see 135-AG page 36

whenever pressure equalization is required

ER-18C Performance Cylindrical OD Bearing (Pack of 25pcs) 1/4-20B The clip-on chuck feature eliminatesER 18C Mounted Insert Only Ball Bearing 52100 Bearing Steel, Black Oxided Setscrew Lock Features ER style cylindrical OD bearing with snap and with black oxided bearing rings Zone hardened inner ring with 120 spacing setscrew lock with diamond faceted setscrews Felt labyrinth seal and flinger for dry and dusty environment Unique land riding retainer design provides superior pocket clearance that allows for 360 grease circulation around the rolling