Spec

• Number of teeth: 20
• Base Diameter d (mm): 20
• Assembly Distance A (mm): 21
• hole diameter (mm): 8
• Length l (mm): 14.53
• teeth width b (mm): 4.3
• Mass (G): 17.2
• gear ratio: 1
• JIS grade 4
• gear ratio: 1
• addendum circle Diameter da (mm): 21.41
• hub Outer diameter dh (mm): 16
• hub Length lh (mm): 9.0
• screw M (mm): M4
• screw ls (mm): 4.5
• Carbon Steels for Machine Structural Use (S45C)
• Country of origin: Japan
• Weight: 16. 9g
• Manufacturer's model number: M1S20A2108
• CODE No.: 442-2155
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