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

Item #

d

D

2B

r

Static Load Rating

Dynamic Load Rating

BST40X72-1BLXLDF N/A 1.5748 in40.000 mm N/A 2.8346 in72.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 15700 lbf70000 N70.00 kN N/A 6950 lbf31000 N31.00 kN
BST40X72-1BLXLDT N/A 1.5748 in40.000 mm N/A 2.8346 in72.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 31500 lbf140000 N140.00 kN N/A 11400 lbf50500 N50.50 kN
BST40X90-1BDB N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 29200 lbf130000 N130.00 kN N/A 13200 lbf58500 N58.50 kN
BST40X90-1BDBP4 N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 29200 lbf130000 N130.00 kN N/A 13200 lbf58500 N58.50 kN
BST40X90-1BDF N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 29200 lbf130000 N130.00 kN N/A 13200 lbf58500 N58.50 kN
BST40X90-1BDT N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 58500 lbf261000 N261.00 kN N/A 21400 lbf95000 N95.00 kN
BST40X90-1BLXLDB N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 29200 lbf130000 N130.00 kN N/A 13200 lbf58500 N58.50 kN
BST40X90-1BLXLDF N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 29200 lbf130000 N130.00 kN N/A 13200 lbf58500 N58.50 kN
BST40X90-1BLXLDT N/A 1.5748 in40.000 mm N/A 3.5433 in90.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 58500 lbf261000 N261.00 kN N/A 21400 lbf95000 N95.00 kN
BST45X100-1BDB N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST45X100-1BDF N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST45X100-1BDT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X100-1BLXLDB N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST45X100-1BLXLDF N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST45X100-1BLXLDT N/A 1.7717 in45.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST45X75-1BDB N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 17400 lbf77500 N77.50 kN N/A 7200 lbf32000 N32.00 kN
BST45X75-1BDF N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 17400 lbf77500 N77.50 kN N/A 7200 lbf32000 N32.00 kN
BST45X75-1BDT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST45X75-1BLXLDB N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 17400 lbf77500 N77.50 kN N/A 7200 lbf32000 N32.00 kN
BST45X75-1BLXLDF N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 17400 lbf77500 N77.50 kN N/A 7200 lbf32000 N32.00 kN
BST45X75-1BLXLDT N/A 1.7717 in45.000 mm N/A 2.9528 in75.000 mm N/A 1.1811 in30.000 mm N/A 0.0394 in1.000 mm N/A 35000 lbf155000 N155.00 kN N/A 11700 lbf52000 N52.00 kN
BST50X100-1BDB N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST50X100-1BDF N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
BST50X100-1BDT N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 68500 lbf305000 N305.00 kN N/A 22700 lbf101000 N101.00 kN
BST50X100-1BLXLDB N/A 1.9685 in50.000 mm N/A 3.9370 in100.000 mm N/A 1.5748 in40.000 mm N/A 0.0394 in1.000 mm N/A 34500 lbf153000 N153.00 kN N/A 13900 lbf62000 N62.00 kN
Unit of Measure
1 2 3 4