Worm Gear Manufacturer and Supplier in Türkiye
We manufacture worm gear sets to your drawing: bronze worm wheels on steel hubs and case-hardened, ground steel worms – for reducers, hoists, valves, gates and positioning drives.
- CuSn12bronze wheel rims
- Ø315 mmworm grinding
- 1–6starts
- Setswheel and worm
- 3.1certificates
High Ratios in a Single, Compact Stage
A worm gear set combines a screw-like worm with a worm wheel. One stage gives ratios from about 5:1 to 100:1, runs quietly, and can be designed to be self-locking – a valuable safety feature for hoists, gates and lifting tables.
Because the worm slides against the wheel, material pairing is critical. We manufacture wheels with tin-bronze or aluminium-bronze rims on steel hubs, and worms from case-hardening steel, carburised and ground for a smooth, hard flank.
At a glance
- Ratioabout 5:1 to 100:1
- Wheel rimCuSn12, CuSn12Ni2, CuAl10Fe5Ni5
- Wheel hubsteel, bolted or shrunk
- Worm material16MnCr5, 20MnCr5
- Worm finishhardened and ground
- Supplymatched sets
Worm Gear Components
Matched Worm Gear Sets
Worm and worm wheel manufactured and checked together for the correct centre distance, backlash and contact.
- Same lead and pressure angle
- Contact pattern checked
- Packed and labelled as sets
Bronze Worm Wheels
Bronze rims bolted or shrunk onto steel hubs, hobbed with a hob matched to the worm geometry.
- Centrifugally cast bronze
- Splined or keyed steel hubs
- Large wheels on request
Hardened and Ground Worms
Single and multi-start worms, carburised and ground on a Micromat thread grinder for low friction and long life.
- Ground flanks
- ZA, ZI, ZK and ZN profiles
- Integral shaft ends
Worm Gear Specifications: What Can We Make?
| Parameter | Range |
|---|---|
| Worm diameter | up to Ø315 mm ground, 500 mm length |
| Number of starts | 1 to 6 |
| Tooth profile | ZA, ZN, ZI, ZK to drawing |
| Worm material | 16MnCr5, 20MnCr5, 42CrMo4 |
| Worm heat treatment | case hardening and grinding, or nitriding |
| Wheel rim material | CuSn12, CuSn12Ni2, CuAl10Fe5Ni5 |
| Wheel hub | steel or cast iron, bolted or shrink-fitted |
| Checks | centre distance, backlash, contact pattern |
Ranges are typical. Send your drawing and we confirm feasibility for your exact part.
Worm Shafts and Wheels From Production
Why Bronze Against Hardened Steel?
A worm drive works by sliding contact. A hard, smooth steel worm running against a softer bronze wheel gives the best combination of low friction, good running-in and resistance to seizing. Tin bronze CuSn12 is the standard; nickel-alloyed CuSn12Ni2 adds strength, and aluminium bronze suits low-speed, high-load drives.
Worms are ground after hardening – an unground worm wears the wheel quickly and loses efficiency.
- Centrifugally cast bronze rims
- Ground, case-hardened worms
- Lubrication advice on request
Where Do Our Worm Gears Run?
Industries that use our worm gears: food and beverage · recycling and wastewater · marine · chemical
Worm gearbox housings too
Welded or machined gearbox housings for worm drives can be produced by our sister company Nika Steelworks.
Questions About Worm Gears
Do I need to replace worm and wheel together?
Usually yes. A new wheel on a worn worm, or the reverse, wears quickly. We recommend and supply matched sets.
Is a worm gear self-locking?
Single-start worms with a low lead angle are often self-locking at standstill, but self-locking is not guaranteed under vibration. Treat it as a feature, not as a brake.
Which bronze do you use?
CuSn12 as standard, CuSn12Ni2 for higher strength, and CuAl10Fe5Ni5 aluminium bronze for slow, heavily loaded drives – or the grade on your drawing.
Can you grind worms?
Yes, up to Ø315 × 500 mm on a Micromat GSU 315 thread and worm grinder.
Worm Gears: Ratios, Materials and Manufacturing
A worm gear set transmits motion between crossed shafts, usually at 90°, through a worm – a screw with one or more thread starts – meshing with a worm wheel. One revolution of a single-start worm advances the wheel by one tooth, so high reduction ratios are possible in a single compact stage.
Advantages and limits
Worm drives are quiet, compact and smooth, and low-lead single-start worms can resist back-driving. The price is efficiency: sliding contact means losses, especially at high ratios. For high-power continuous drives, a helical or bevel-helical gearbox is usually more efficient; for intermittent duty, positioning and self-locking applications, worm gears are hard to beat.
How we make worm wheels
Bronze rims are centrifugally cast for a dense, sound structure, turned and fitted to steel hubs by bolting or shrink fit. The teeth are hobbed with a hob that matches the worm geometry – module, lead, number of starts and profile type – so the wheel and worm mesh correctly from the first hour.
How we make worms
Worms are turned from case-hardening steel, thread-milled, carburised and hardened, then ground on a Micromat thread and worm grinder. Grinding gives the hard, smooth flank a long-life worm drive needs.
Inspection and supply
We check centre distance, backlash and contact pattern and supply worm and wheel as a labelled set, with EN 10204 3.1 certificates for steel and bronze. See quality for the full scope.
Nika Gears is a worm gear supplier in Türkiye for reducer manufacturers and maintenance teams across Europe. Send your drawing or worn set for a quotation.
Send a gear drawing. Get an answer within 24 hours.
Include the PDF or STEP file, module or DP, number of teeth, material, heat treatment, accuracy grade and quantity. We reply with questions or a quotation.