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992220 SKU No.
12 mm Bore
12B21 ISO 04B-1 Sprocket 21 Teeth ISO No. 04B Steel Hub Sprocket
For Ametric® No. 12 Single Strand Chain with
6mm Pitch
2.8mm Roller Width
4mm Roller Dia.
2.5mm (B1)
42.7 mm OD (Approx) (de)
25 mm Hub Dia. (dn)
13 mm (A)
021 Teeth
Steel 12 mm H8 bore , 4x1.8 keyway M4 screw hole over keyway and at 90°
0.36 kg