Kohara Gear Industry 螺旋嗣形 SMSG4-20L SMSG4-20L

Feature

• It is a reasonably priced dental laboratory product, and you can freely rework it except for the tooth part.
• Gear for power transmission.

Specifications

• Module: m4
• number of teeth : 20
• Reference diameter d (mm): 80
• Assembly Distance A (mm): 75
• Hole Diameter (mm): 20
• Total length ( mm ) : 50.51
• Width of teeth b (mm): 20
• number of teeth ratio: 1
• Tip Diameter: 84.88
• Hole Length: 45
• Boss Length: 27
• Boss Diameter: 64
• Tap: -
• Keyway: -
• Holding Surface Diameter: 43.43
• number of teeth ratio: 1
• Gear Precision: JIS B 1704: 1978: 2 Grade
• Tooth surface hardness: 50 to 60 HRC
• Tooth profile: Gleason
• Surface Treatment: Black Dye except for Grinding Part
• Pressure Angle: 20 deg.
• tooth surface finish: grinding
• gear reference plane: holes (H7)
• Heat Treatment: Tooth Surface High-Frequency Quenching
• Helix Angle: 35
• Additional processing is possible.
• material/Finishing: S 45 C
• Country of origin: Japan
• Item Code: 128 - 0909