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Miniature ball bearing(R series)

Miniature ball bearings are ideal for compact and high performance design, which can operate at low friction and high speed, and minimize the later maintenance requirements. These silent bearings are durable and can withstand light to moderate radial and thrust loads, and can provide a variety of types and designs.

Miniature ball bearings can be basically divided into deep groove type and angular contact type. The most typical deep groove bearing, including outer ring with stop edge, wide inner ring, thin wall and special shape of synchronous bearings. In addition, according to whether there are sealing rings and dust-proof caps, they can be divided into open type, sealing ring type and dust-proof cap type.

Miniature ball bearings are suitable for all kinds of industrial equipment, small rotary motors, office equipment, micro motor soft drives, pressure rotors, hard disk motors, stepping motors, fans, pulleys, rollers, transmission equipment, entertainment equipment, etc.


   Miniature Bearing Schematic


 Bton
Part No.
DimensionsBasic Load Rating(N)Limiting Speed(rpm) 
Open/ZZ/ZZSdDBB₁r
min.
(N)(rpm) 
Frac.InchFrac.InchFrac.InchFrac.InchCrC0rGrease
open
Z·ZZ
Oil
open Z
R1-5ZZ  3/32.0937   5/16.3125   7/64.1094   9/64.1406 0.155501756000071000
R144ZZ  1/8 .1250   1/4 .2500   3/32.0937   7/64.1094 0.1283956700080000
R2-5ZZ  5/16.3125   7/64.1094   9/64.1406 0.15601796000067000
R2-6ZZS  3/8 .3750   7/64.1094   9/64.1406 0.156402255300063000
R2ZZ  3/8 .3750   5/32.1562   5/32.1562 0.36302185600067000
R2AZZ  1/2 .5000  11/64.1719  11/64.1719 0.36402255300063000
R155ZZS  5/32.1562   5/16.3125   7/64.1094   1/8 .1250 0.13601495300063000
R156ZZS  3/16.1875   5/16.3125   7/64.1094   1/8 .1250 0.13601495300063000
R166ZZ  3/8 .3750   1/8 .1250   1/8 .1250 0.17102705000060000
R3ZZ  1/2 .5000   5/32.1562  10/51.1960 0.313004854300053000
R168BZZ  1/4 .2500   3/8 .3750   1/8 .1250   1/8 .1250 0.14202044800056000
R188ZZ  1/2 .5000   1/8 .1250   3/16.1875 0.1510804404000050000
R4ZZ  5/8 .6250  10/51.1960  10/51.1960 0.316106603800045000
R4AZZ  3/4 .7500   7/32.2188   9/32.2812 0.423408853600043000
R1810ZZ  5/16.3125   1/2 .5000   5/32.1562   5/32.1562 0.155402764000048000
R6ZZ  3/8 .3750   7/8 .8750   7/32.2188   9/32.2812 0.4335014103200038000
Inquiry online

Phone & Fax

TL:0086-510-82736376-810

Fax:0086-510-82736370

Email

sales@bt-bearings.com

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