Gearbox Components and Complete Gear Sets
We manufacture the gears and shafts inside a gearbox – cluster gears, gear sets, hubs, spacers and shafts – for gearbox builders, OEMs and repair shops, from single replacement parts to series.
- Clustergears and gear sets
- Shaftsand hubs
- Setspacked together
- Repairand OEM
- 3.1certificates
Everything Inside the Housing
A gearbox is only as good as its weakest component. Nika Gears manufactures the internal parts of industrial gearboxes to drawing: spur, helical and bevel gears, cluster gears with two or more tooth stages, input and output shafts, splined hubs, spacers and bearing sleeves.
For gearbox builders we supply series components; for repair shops and plant maintenance we reverse-engineer worn parts and manufacture complete replacement gear sets.
At a glance
- Partsgears, shafts, hubs, spacers
- Cluster gears2 or more stages
- Gear setscomplete, matched
- Reverse engineeringfrom samples
- Materials16MnCr5, 18CrNiMo7-6, 42CrMo4
- Hardeningcase, induction, nitriding
- SupplyOEM series and repair
Gearbox Components We Manufacture
Cluster Gears
Two or more gear stages on one body – shaped where the stages are too close for a hob, hardened and ground.
- Shaped and hobbed stages
- Internal splines
- Ground teeth on request
Complete Gear Sets
All gears of a gearbox stage or of the whole gearbox, manufactured and inspected as one set.
- Matched pairs
- Mesh checked
- Packed and labelled per set
Hubs, Sleeves and Spacers
Splined hubs, bearing sleeves, spacers and coupling parts turned and finished to drawing.
- Splined and keyed bores
- Hardened and ground
- Series production
Gearbox Component Specifications: What Can We Make?
| Parameter | Range |
|---|---|
| Gear types | spur, helical, double helical, bevel, worm, internal |
| Gear diameter | up to Ø1,800 mm, module 30 |
| Shafts | up to Ø800 × 3,000 mm |
| Splines | DIN 5480, DIN 5482, ANSI B92.1 |
| Materials | 16MnCr5, 20MnCr5, 18CrNiMo7-6, 42CrMo4, 34CrNiMo6, bronze |
| Heat treatment | case hardening, induction hardening, nitriding, Q+T |
| Reverse engineering | measurement of worn parts, drawings for approval |
| Documents | 3.1 certificates, gear measurement, dimensional reports |
Ranges are typical. Send your drawing and we confirm feasibility for your exact part.
Gearbox Parts From Production
Who Do We Supply Gearbox Components To?
Industries that use our gearbox components: industrial machinery · plastic and rubber · power generation · steel and metal
Need the housing as well?
Welded and machined gearbox housings, base frames and covers are produced by our sister company Nika Steelworks – one group for the complete gearbox.
Questions About Gearbox Components
Can you reverse-engineer a gearbox?
Yes. We measure worn gears and shafts, prepare drawings for your approval and manufacture new parts or a complete gear set.
Do you supply complete gear sets?
Yes – all gears and shafts of a stage or a gearbox, matched, inspected and packed together.
Do you assemble gearboxes?
We manufacture and supply the components. Housings can be produced by our sister company Nika Steelworks.
Which gearbox types do you supply parts for?
Parallel-shaft helical, bevel-helical, worm and planetary gearboxes in industrial, mining, steel, marine and process applications.
Gearbox Components: OEM Series and Repair Gear Sets
Whether you build gearboxes or keep them running, the components inside decide reliability. Nika Gears manufactures gearbox components to drawing in Türkiye – gears, cluster gears, shafts, hubs and spacers – for gearbox builders, machinery OEMs, repair shops and plant maintenance teams.
Cluster gears
Cluster gears combine two or more gear stages on one body to save space and parts. When the stages sit close together, the smaller one cannot be hobbed and is cut on a gear shaper instead. Internal splines connect the cluster to its shaft. After hardening, the stages are ground where the accuracy grade requires it.
Complete gear sets
In a gearbox overhaul, replacing only the visibly damaged gear often leads to early failure of the new part against worn mates. We recommend replacing gears in meshing pairs or as a complete set, and we manufacture and inspect them together so they run in correctly.
Reverse engineering
Many gearboxes in service are decades old, and drawings are lost. We measure the worn parts – tooth count, module, pressure angle, helix angle, profile shift, bores and splines – reconstruct the original geometry, prepare drawings for your approval and manufacture the replacement.
Shafts and hubs
Input and output shafts, splined shafts and pinion shafts are produced alongside the gears, so fits between gears and shafts are controlled in one order.
The complete gearbox
Through our sister company Nika Steelworks, welded gearbox housings and base frames can be fabricated and machined in İzmir as well. As a gear box component manufacturer in Türkiye, Nika Gears supplies Europe with documented, inspected parts. Send your drawing or worn parts list.
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.