Ball Bearing Housed Unit Page A-23 Ball Bearing Housed Units-Engineering

TIMKEN BALL BEARING HOUSED UNIT CATALOG Download 3D Models and 2D Drawings at cad.timken.com A-23 BALL BEARING HOUSED UNITS TABlE A-15. sUggEsTED sHAfT TOlERANCE (1) Shaft Size Tolerance in. mm 1 /2 - 1 15 /16 12.7 - 49.2 nominal to -0.0005 in. , -0.013 mm 2 - 3 15 /16 50.8 - 100.0 nominal to -0.0010 in., -0.025 mm above 4 101.6 nominal to -0.0015 in., -0.038 mm (1) These are for normal service; for heavy loads, high speeds or vertical shaft applications, reduce the suggested shaft tolerance by half. TABlE A-16. sUggEsTED sET sCREW TigHTENiNg TORqUE Set Screw Size Standard Steel Stainless Steel (TDCF inserts) in. in. - lbs. #10 35 23 1 /4 80 60 5 /16 155 122 3 /8 275 213 7 /16 425 340 mm Nm M5 4.0 3.1 M6 6.6 4.9 M8 15.3 11.5 M10 30.0 22 M12 49.0 37 TABlE A-17. sUggEsTED BOlT MOUNTiNg TORqUE Bolt Size Torque in. ft. - lbs. 3 /8 27 1 /2 65 5 /8 130 3 /4 230 7 /8 573 1 858 1 1 /8 1059 mm Nm M10 44 M12 77 M16 192 M20 372 TECHNICAL DATA This section provides useful installation details related to shaft tolerance and torque for set screws and bolts.

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