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187081 SKU No.
40 mm Bore
3042B21 ISO 08B-3 Sprocket 21 Teeth ISO No. 08B-3 Steel Hub Sprocket
For Ametric® No. 3042 Triple Strand Chain with
12.7mm Pitch
7.75mm Roller Width
8.51mm Roller Dia.
7mm (B1)
35mm (B3)
90.5 mm OD (Approx) (de)
70 mm Hub Dia. (dn)
55 mm (A)
021 Teeth
Steel 40 mm H8 bore , 12X3.3 keyway M10 screw hole over keyway and at 90°
1.81 kg