42B21.45

837586 SKU No.

45 mm Bore

42B21 ISO 08B-1 Sprocket 21 Teeth ISO No. 08B-1 Steel Hub Sprocket

For Ametric® No. 42 Single Strand Chain with

12.7mm Pitch

7.75mm Roller Width

8.51mm Roller Dia.

7mm (B1)

90.5 mm OD (Approx) (de)

68 mm Hub Dia. (dn)

28 mm (A)

021 Teeth

Steel 45 mm H8 bore , 14X3.8 keyway M12 screw hole over keyway and at 90°

0.82 kg