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145221 SKU No.
25 mm Bore
42B39 ISO 08B-1 Sprocket 39 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)
163.5 mm OD (Approx) (de)
90 mm Hub Dia. (dn)
35 mm (A)
039 Teeth
Steel 25 mm H8 bore , 8x3.3 keyway M6 screw hole over keyway and at 90°
1.8 kg