Gear accuracy: JIS B 1702-1 Equivalent to N8 grade Tooth profile: Ordinary teeth Pressure angle: 20° Material: S45C Heat treatment: None Tooth surface hardness: (194HB or less) Surface treatment: Black dye (The fastening parts and additional working parts are not blackened. ) Number of teeth: 40 Shape: S1MA Standard circle diameter (mm): 80 Tooth width ( mm): 20 Hole diameter (mm): 18 Module: 2 Tooth tip circle diameter: 84 Total length (mm): 42 Boss diameter (mm): 55 Boss length (mm): (left) 12 (right) 10 Tooth surface finish: Cutting Bolt size: M4 x 15 Number of bolts: 4 Bush直径:40
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