The method of bearing designation for angular contact ball bearings typically consists of three parts: prefix, basic code, and suffix. Here’s an explanation of the designation method used by BRZB:
Contact Angle Codes: C=15°, AC=25°, A=30°, B=40°.
F: Steel, nodular cast iron, or powder metallurgy solid cage.
Q: Bronze solid cage.
M: Brass solid cage.
L: Light alloy solid cage.
TH: Glass fiber reinforced.
TN: Engineering plastic injection-molded cage.
J: Steel plate stamped cage.
Y: Copper plate stamped cage.
ZA: Zinc-aluminum alloy cage.
H: Self-locking pocket-type cage.
A: Outer ring guided.
B: Inner ring guided.
D: Two sets of bearing pairs.
T: Three sets of bearing pairs.
Q: Four sets of bearing pairs.
P: Five sets of bearing pairs.
S: Six sets of bearing pairs.
B: Back-to-back arrangement.
F: Face-to-face arrangement.
T: Tandem arrangement.
G: Universal matching.
BT: Back-to-back tandem arrangement.
FT: Face-to-face and tandem arrangement.
BC: Paired back-to-back tandem arrangement.
FC: Paired face-to-face tandem arrangement.
GA: Light preload, with a small preload value.
GB: Medium preload, with a preload value greater than GA.
GC: Heavy preload, with a preload value greater than GB.
Gxxx: Special preload with a preload value of XXX.
CA: Smaller axial clearance.
CB: Axial clearance greater than CA.
CC: Axial clearance greater than CB.
Z1, Z2, Z3: Acceleration vibration levels.
V1, V2, V3: Velocity vibration levels.
RZ: Non-contact rubber seal.
RS: Contact rubber seal.
HQ1: Ceramic balls.
S: Stainless steel.
Please note that bearing designation methods may vary from country to country, and the above explanation is specific to the BRZB designation method for angular contact ball bearings.
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