Bronze worm wheels, worm shafts and tooth re-cutting
Worm wheel and worm shaft sets manufactured or reconditioned to drawing or sample, including multi-start worms, ground finish and re-cutting of bronze worm wheel teeth.
What we do
Worm wheels and worm shafts
The worm wheel and worm shaft set is one of the company's historic specialities. We manufacture bronze worm wheels and their matching worm shafts, maintaining correct meshing between the two parts. We also re-cut the teeth of worn bronze worm wheels and machine worm shafts to sample or to the customer's dimensions.
When re-cutting, we machine all the teeth of the worm wheel to keep a uniform pitch between them and then manufacture the worm shaft to the resulting centre distance — which restores correct meshing to the set. When the worm wheel has been built up with weld, we first assess the hardness and distortion of the part, because hardened or distorted material can make re-cutting unfeasible or compromise operation.
We serve both single replacement parts for maintenance and special assemblies for equipment manufacturers, including multi-start configurations — we have already produced sets with up to 13 starts.
We manufacture parts with right and left hand of helix, helix angles up to 55 degrees, pressure angles from 14.5° to 30° and ZI, ZN, ZK and CAVEX geometries. A leading company in the lift sector approved 100% of the sets supplied.
- Bronze worm wheels for worm shafts
- Re-cutting of bronze worm wheel teethAll teeth re-cut to keep a uniform pitch between them.
- Manufacturing of the worm shaft to the re-cut worm wheelNew worm shaft machined to the centre distance resulting from the re-cut.
- Assessment of worm wheels built up with weldHardness and distortion checked before machining, with a distortion criterion in the range of 0.3 mm.
- New worm shaft with controlled hardnessShaft manufactured free of distortion, with hardness around 27 HRC.
- Worm wheels and worm shafts in bronzeIncluding SAE 65 bronze and equivalent alloys according to the application.
- Single and multi-start worm shafts
- Ground finish
- Special multi-start assembliesAssemblies already produced with up to 13 starts.
- StartsFrom 1 up to 13 starts
- Hand of helixRight and left hand
- Helix angleUp to 55 degrees
- Pressure angleFrom 14.5° to 30°
- GeometriesZI, ZN, ZK and CAVEX
Capacity assessed case by case according to drawing, material, dimensions and application.
Technical gallery
Component examples
Common questions
Frequently asked questions
Technical review
Request a review of a worm wheel or worm shaft
Send the drawing, photos or a description of the part. When no drawing exists, we can work from the physical sample.
What to send
The more information you send, the more accurate the quotation:
- Technical drawing or photos of the part
- Whether a physical sample is available
- Main dimensions
- Material, if known
- Quantity
- Application of the component
- Required lead time
- Whether the machine is down