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BALL AND ROLLER BEARINGS - NTN Beari
ity and extra capacity. There are three fundamental combinations in duplex bearings: face-to-face (DF), back-to-back (DB), and tan- dem (DT). DF. DB. DT. SINGLE DIRECTION THRUST BEARINGS consist of two washers having ball grooves ground into their adja- cent faces with balls and cages mounted between these.
Single and Duplex Angular Contact Ball Bearings - NTN Glob
For single and DT arrangement,. When Por＜Fr use Por＝Fr. 30˚. Xo. 40˚. 0.5. 0.5. Yo. Xo. Yo. 0.33. 0.26. 1. 1. 0.66. 0.52. Con- tact angle. Con- tact angle. Single, DT. DB, DF. Basic load ratings. Limiting speeds1）. Bearing numbers2）. Abutment and fillet dimensions dynamic static dynamic static. (duplex). (duplex). (duplex).
Frequently Asked Questions | NTN Beari
What is the nomenclature for Precision Bearings (P4, P5, Tolerances)?; What is the difference between T & D1 or what is the designation for an oil hole? What is the designation for . DB arrangements have a large spread between the bearing centers and should be selected when a rigid shaft is required for the application.