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KZ Angular Contact Ball Bearings
An angular contact ball bearing uses axially asymmetric races. An axial load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to want to separate the races axially. So the angle of contact on the inner race is the same as that on the outer race. Angular contact bearings better support "combined loads" (loading in both the radial and axial directions) and the contact angle of the bearing should be matched to the relative proportions of each. The larger the contact angle (typically in the range 10 to 45 degrees), the higher the axial load supported, but the lower the radial load. In high speed applications, such as turbines, jet engines, dentistry equipment, the centrifugal forces generated by the balls will change the contact angle at the inner and outer race. Ceramics such as silicon nitride are now regularly used in such applications due to its low density (40% of steel - and so significantly reduced centrifugal force), its ability to function in high temperature environments, and the fact that it tends to wear in a similar way to bearing steel (rather than cracking or shattering like glass or porcelain).

Most bicycles use angular-contact bearings in the headsets because the forces on these bearings are in both the radial and axial direction

The standard KZ range comprises the following types:

Bearing No. Bearing No. Bearing No. Bearing No.
--- 7200 --- ---
--- 7201 --- ---
--- 7202 --- ---
7003 7203 --- ---
7004 7204 --- ---
7005 7205 7305 7405
7006 7206 7306 7406
7007 7207 7307 7407
7008 7208 7308 7408
7009 7209 7309 7409
7010 7210 7310 7410
7011 7211 7311 7411
7012 7212 7312 7412
7013 7213 7313 7413
7014 7214 7314 7414
7015 7215 7315 7415
7016 7216 7316 7416
7017 7217 7317 7417
7018 7218 7318 7418
7019 7219 7319 7419
7020 7220 7320 7420
7022 7222 7322 7422
7024 7224 --- ---
7026 7226 --- ---
--- 7228 7328 7428

  • The above bearings are available in Steel and Brass Cage.
  • Prices will be quoted against your inquiry indicating quantity required.
 
 
 
 
 
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