NTN BEARING CORPORATION OF AMERICA
NTN BEARING CORPORATION OF AMERICA
Head Office
1600 E. Bishop Court, P.O. Box 7604
Mount Prospect, IL 60056-7604, U.S.A.
Phone: 847-298-7500
Fax: 847-699-9744
Toll Free: 800-323-2358
Email: mkt@ntnamerica.com
Website: www.ntnamericas.com
Print Back
Four Point Ball Bearings
Four Point Ball Bearings - Dimensions
Unit of Measure
Items Four Point Ball Bearings
QJ210
Four Point Ball Bearings 		Four Point Ball Bearings
QJ211
Four Point Ball Bearings 		Four Point Ball Bearings
QJ212
Four Point Ball Bearings 		Four Point Ball Bearings
QJ213
Four Point Ball Bearings 		Four Point Ball Bearings
QJ214
Four Point Ball Bearings
Type N/A Four-Point Contact Ball Bearing
Bore Type N/A Round
Material N/A High Carbon Chrome Steel
Cage Type N/A High Strength, 2 piece, Machined
Cage Material N/A Brass
Ball Material N/A Steel
Limiting Speed - Oil N/A 9050 RPM N/A 6800 RPM N/A 6300 RPM N/A 5800 RPM N/A 5400 RPM
Limiting Speed - Grease N/A 5300 RPM N/A 5100 RPM N/A 4700 RPM N/A 4400 RPM N/A 4000 RPM
d N/A 1.9685 in50.000 mm N/A 2.1654 in55.000 mm N/A 2.3622 in60.000 mm N/A 2.5591 in65.000 mm N/A 2.7559 in70.000 mm
D N/A 3.5433 in90.000 mm N/A 3.9370 in100.000 mm N/A 4.3307 in110.000 mm N/A 4.7244 in120.000 mm N/A 4.9213 in125.000 mm
B N/A 0.7874 in20.000 mm N/A 0.8268 in21.000 mm N/A 0.8661 in22.000 mm N/A 0.9055 in23.000 mm N/A 0.9449 in24.000 mm
r N/A 0.0433 in1.100 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm
a N/A 1.5945 in40.500 mm N/A 1.7520 in44.500 mm N/A 1.9291 in49.000 mm N/A 2.1063 in53.500 mm N/A 2.2244 in56.500 mm
da min N/A 2.2441 in57.000 mm N/A 2.5000 in63.500 mm N/A 2.6969 in68.500 mm N/A 2.8937 in73.500 mm N/A 3.0906 in78.500 mm
Da max N/A 3.2677 in83.000 mm N/A 3.6024 in91.500 mm N/A 3.9961 in101.500 mm N/A 4.3898 in111.500 mm N/A 4.5866 in116.500 mm
ras max N/A 0.0394 in1.000 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm N/A 0.0591 in1.500 mm
Precision N/A Class 0
Configuration N/A One
Contact Angle N/A 30 º
Radial Internal Clearance N/A CN
Static Load Rating N/A 20000 lbf89000 N89.00 kN N/A 25200 lbf112000 N112.00 kN N/A 31000 lbf138000 N138.00 kN N/A 34500 lbf153000 N153.00 kN N/A 38000 lbf168000 N168.00 kN
Dynamic Load Rating N/A 11700 lbf52000 N52.00 kN N/A 14400 lbf64000 N64.00 kN N/A 17400 lbf77500 N77.50 kN N/A 19000 lbf84500 N84.50 kN N/A 20700 lbf92000 N92.00 kN
Enclosure N/A Open
Weight N/A 1.270 lb0.576 kg N/A 1.673 lb0.759 kg N/A 1.724 lb0.782 kg N/A N/A 2.932 lb1.330 kg
Operating Temperature Range N/A -40 to 250 ºF-40 to 120 ºC