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Precision grade JIS grade N9 (JIS B1702-1: 1998) * JIS grade 5 (JIS B1702: 1976)


section of gear Plastic Screw Gears Normal plane

Gear teeth Standard full depth


pressure angle 20°

Helix angle 45°

Material Acetal Acetal is definitely a stable plastic-type material with inherent self-lubricating properties which can be improved with lubricating fillers.

Delrin Delrin is an engineered plastic material with a good mixture of toughness, stiffness, wear and abrasion level of resistance, and low frictional characteristics.

Nylon Nylon, comprising a number of grades of polyamides, is a general-purpose material in wide use. It is hard and resistant and provides great pressure ratings.

Polycarbonate Polycarbonate is an extremely tough polymer that can be machined to close tolerances. Lubrication is sometimes needed, as the wear properties of polycarbonate aren’t as good as various other polymers.

Other Plastic Various other unlisted or specific polymers or plastic materials.