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Plastic Screw Gears
Specifications
Precision grade JIS grade N9 (JIS B1702-1: 1998) ＊ JIS grade 5 (JIS B1702: 1976)
Reference
section of gear Normal plane
Gear teeth Standard full depth
Normal
pressure angle 20°
Helix angle 45°
Material Acetal Acetal is a stable plastic material with inherent self-lubricating properties that can be enhanced with lubricating fillers.
Delrin Delrin is an engineered plastic with a good combination of toughness, stiffness, wear and abrasion resistance, and low frictional characteristics.
Nylon Nylon, comprising several grades of polyamides, is a general-purpose material in wide use. It is tough and resistant and has good 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 are not as good as some other polymers.
Other Plastic Other unlisted or specialized polymers or plastic materials.
| Module | No. of teeth | Direction of helix | Shape | Bore | Hub dia. | Pitch dia. | Outside dia. | Face width | Hub width | Total length |
| A | B | C | D | E | F | G | ||||
| m1.5 | 10 | R L | S1 | 6 | 16 | 21.21 | 24.21 | 15 | 10 | 25 |
| 13 | R L | S1 | 8 | 23 | 27.58 | 30.58 | 15 | 10 | 25 | |
| 15 | R L | S1 | 8 | 25 | 31.82 | 34.82 | 15 | 10 | 25 | |
| 20 | R L | S1 | 10 | 30 | 42.43 | 45.43 | 15 | 10 | 25 | |
| m2 | 10 | R L | S1 | 10 | 22 | 28.28 | 32.28 | 20 | 15 | 35 |
| 13 | R L | S1 | 10 | 30 | 36.77 | 40.77 | 20 | 15 | 35 | |
| 15 | R L | S1 | 10 | 35 | 42.43 | 46.43 | 20 | 15 | 35 | |
| 20 | R L | S1 | 12 | 45 | 56.57 | 60.57 | 20 | 15 | 35 | |
| m2.5 | 10 | R L | S1 | 10 | 26 | 35.36 | 40.36 | 22 | 16 | 38 |
| 13 | R L | S1 | 12 | 35 | 45.96 | 50.96 | 22 | 16 | 38 | |
| 15 | R L | S1 | 12 | 40 | 53.03 | 58.03 | 22 | 16 | 38 | |
| 20 | R L | S1 | 12 | 60 | 70.71 | 75.71 | 22 | 16 | 38 | |
| m3 | 10 | R L | S1 | 12 | 34 | 42.43 | 48.43 | 25 | 18 | 43 |
| 13 | R L | S1 | 15 | 45 | 55.15 | 61.15 | 25 | 18 | 43 | |
| 15 | R L | S1 | 15 | 50 | 63.64 | 69.64 | 25 | 18 | 43 | |
| 20 | R L | S1 | 15 | 60 | 84.85 | 90.85 | 25 | 18 | 43 |
