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Worm wheel (helical, non-throated), module 1.5, 30 teeth, helix 5.36° RH, for the 1-start Ø16 worm

What worm wheel runs with a 1-start, module 1.5 worm? · Modern device · basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance

Also called: worm wheel, worm gear, helical worm wheel, non-throated worm wheel, rueda de tornillo sin fin (corona), Schneckenrad

Exact dimensions. True size, with no printing tolerance added.

length
47.99 mm
width
47.95 mm
height
10.0 mm

Notes

  • Involute helical gear used as a worm wheel: transverse module 1.5 (= the worm's axial module), 30 teeth, helix angle 5.36° right hand (= the worm's lead angle, same hand), normal module 1.49, normal pressure angle 20°; pitch Ø45, tip Ø47.99, root Ø41.27, face 10 mm, Ø8 bore. Centre distance with its worm 30.5 mm, axes crossed at 90°.
  • A non-throated worm wheel: worm and wheel are both involute helicoids, so the pair is a crossed-helical gear pair — exactly conjugate at every position, with point contact (a hobbed, throated wheel wraps round the worm and gives line contact; this plain helical form is the one used for light drives and for 3D-printed sets, and it needs no axial positioning).
  • Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

Worm wheel (helical, non-throated), module 1.5, 30 teeth, helix… size chart

dimensionvalue
transverse module1.5
teeth30
helix5.36° RH
normal module1.49
pitch Ø45 mm
tip Ø47.99 mm
face10 mm
boreØ8
centre distance30.5 mm

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

Henry T. Brown (1868, public domain)Five Hundred and Seven Mechanical Movements — scan on archive.orgwebPublisher's page; dimensions are facts
507movements.comBrown's movement No. 31: figure, his text and an animationwebPublisher's page; dimensions are facts
Xem StudiodrawingwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Xem Studio design: free to use, print and sell things from; not to be republished as files. Xem Studio Design License. index.json

worm-wheel-helical-m1-5-30t-for-1start-d16wheel, axis Z, z 0..10, a tooth centred on +X at z = 0STEP · STL
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Plain text: sheet.txt · JSON: /api/geometry?object=worm-wheel-helical-m1-5-30t-for-1start-d16

Worm wheel (helical, non-throated), module 1.5, 30 teeth, helix 5.36° RH, for the 1-start Ø16 worm, isometric render of a generated part
Render of worm-wheel-helical-m1-5-30t-for-1start-d16 from the free STEP; not to scale.

Fits with

Worm and worm wheel, module 1.5, 1-start, 30 : 1, isometric render of a generated part
Worm and worm wheel, module 1.5, 1-start, 30 : 15 sizes★ 1 file

Questions

What worm wheel runs with a 1-start, module 1.5 worm?

Involute helical gear used as a worm wheel: transverse module 1.5 (= the worm's axial module), 30 teeth, helix angle 5.36° right hand (= the worm's lead angle, same hand), normal module 1.49, normal pressure angle 20°; pitch Ø45, tip Ø47.99, root Ø41.27, face 10 mm, Ø8 bore. Centre distance with its worm 30.5 mm, axes crossed at 90°.