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


portion of gear Normal plane

Gear teeth Standard full depth


pressure angle 20°

Helix angle 45°

Material Plastic Screw Gears Acetal Acetal is a stable plastic-type material with inherent self-lubricating properties that can be enhanced with lubricating fillers.

Delrin Delrin can be an engineered plastic with a good mixture of toughness, stiffness, wear and abrasion resistance, and low frictional features.

Nylon Nylon, comprising a number of grades of polyamides, is a general-purpose materials in wide use. It is challenging and resistant and provides good pressure ratings.

Polycarbonate Polycarbonate can be an extremely tough polymer that can be machined to close tolerances. Lubrication is sometimes needed, as the put on properties of polycarbonate are not as good as various other polymers.

Other Plastic Other unlisted or specialized polymers or plastic materials.