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PRODUCT · Rotary Transmission

Helical Gears

Ground gears, module 1–8. Helical gear · 19°31'42" left-hand · ground · 20° pressure angle.

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Helical gear construction and designation diagram
Marking: 1M-20-12-L (Module · Teeth · Bore · L = left-hand)

Specifications · Selector

Helical gear online selector

All 28 standard sizes from the product catalogue PDF. Filter by module, teeth or bore — or search by model code. All dimensions in mm.

Material 40Cr · Accuracy (JIS Grade 2) DIN 6h25 · Ground teeth · Hardness 45–55 HRC · Helical, left-hand 19°31′42″ · 20° pressure angle · Model code: moduleM-teeth-bore-hand (L = left-hand)
Helical gear construction and designation diagram showing D1, DK, Do, D, L, L1, L2, T, U
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Click a column header to sort. Source: Wolfer helical gear catalogue. Download PDF catalogue ↗

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