42B21.3/4"

817228 SKU No.

1.75 inch 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 1-3/4 inch H8 bore , 3/8x3/16 inch keyway 3/8-16 UNC screw hole over keyway and at 90°

0.82 kg