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
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Triple Row Angular Contact Thrust Ball Bearing for Ball Screws
Triple-Row Angular Contact Thrust Ball Bearings for Ball Screws - Dimensions
Unit of Measure
1 2 3 4 

Item #

d

D

B

r

Static Load Rating

Dynamic Load Rating

BST45X100-1BDBT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X100-1BDFT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X100-1BDTT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 103000 lbf459000 N459.00 kN N/A 30000 lbf134000 N134.00 kN
BST45X100-1BLXLDBT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X100-1BLXLDFT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X100-1BLXLDTT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 103000 lbf459000 N459.00 kN N/A 30000 lbf134000 N134.00 kN
BST45X75-1BDBT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST45X75-1BDBT+1#02 N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A N/A
BST45X75-1BDFT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST45X75-1BDTT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 52000 lbf232000 N232.00 kN N/A 15600 lbf69500 N69.50 kN
BST45X75-1BLXLDBT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST45X75-1BLXLDFT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST45X75-1BLXLDTT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 0.5906 in15.000 mm N/A 0.0394 in1.000 mm N/A 52000 lbf232000 N232.00 kN N/A 15600 lbf69500 N69.50 kN
BST50X100-1BDBT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BDFT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BDFTP4 N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BDTT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 103000 lbf459000 N459.00 kN N/A 30000 lbf134000 N134.00 kN
BST50X100-1BLXLDBT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BLXLDFT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BLXLDTT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 103000 lbf459000 N459.00 kN N/A 30000 lbf134000 N134.00 kN
BST55X100-1BDBT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST55X100-1BDFT N/A 2.1654 in55.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST55X100-1BDTT N/A 2.1654 in55.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 103000 lbf459000 N459.00 kN N/A 30000 lbf134000 N134.00 kN
BST55X100-1BLXLDBT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST55X100-1BLXLDFT N/A 2.1654 in55.000 mm N/A 3.9370 in100.000 mm N/A 0.7874 in20.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
Unit of Measure
1 2 3 4