Replacement Gears for Stopped Gearboxes – Made from a Drawing or a Worn Sample
When a gear fails, the drawing is often lost, the gearbox maker is gone or the OEM quotes months. Send us the drawing, the worn gear or just photos and key dimensions. We identify the gear, prepare a drawing for your approval, manufacture it and ship it to your plant with full documents.
- 1 pieceno minimum order
- Ø1,800 mmmax. diameter, module 30
- No drawingreverse engineering from sample
- 24 hfirst answer
- EU deliveryby road in days
From Worn Gear to Replacement in Five Steps
The same route for a single pinion and for a large double helical wheel. You approve the drawing before we cut a single tooth.
- Send what you haveDrawing, STEP file, photos with a ruler, or the worn part itself. Add the tooth count and the mating gear if you know it.
- We identify the gearModule or DP, pressure angle, helix, profile shift and tooth thickness from measurement, span or over-pin dimensions.
- Drawing for approvalYou receive a manufacturing drawing with material, heat treatment and accuracy grade. Nothing is cut before you approve it.
- Manufacture and inspectBlank, gear cutting, heat treatment and grinding where needed. Gear measurement, hardness and dimensional checks before release.
- Ship with documentsPreserved, crated and shipped by road, sea or air with EN 10204 3.1 certificates and inspection reports.
Gears, Pinions and Shafts for Industrial Gearboxes
Most replacement work is for heavy industrial drives that run for decades: mills, crushers, conveyors, mixers, cranes, winches and older gearboxes whose maker no longer supplies parts.
- Spur gears and helical gears up to Ø1,800 mm, module 30
- Double helical and herringbone gears for heavy drives
- Pinion shafts and splined shafts with integral teeth
- Worm wheels and worms as matched sets
- Internal and ring gears up to Ø1,600 mm
- Bevel gear sets and gear racks
- Matched pairs: when the mating gear is worn too, we replace both
What to Measure on a Worn Gear
Photos and these values are usually enough for us to identify the gear and quote. If you can, ship the part – we measure it in İzmir and return it on request.
| Measure | Why we need it |
|---|---|
| Number of teeth (and of the mating gear) | Fixes the ratio and lets us check the centre distance |
| Tip (outside) diameter | With the tooth count, gives the module and profile shift |
| Face width | Tooth length for load and for the cutting set-up |
| Span over k teeth, or over-pin size | Tooth thickness – the key value for a correct fit |
| Helix angle and hand (helical gears) | Must match the mating gear exactly |
| Bore, keyway or spline, hub dimensions | So the gear fits the shaft without rework |
| Centre distance in the gearbox | Confirms the pair geometry |
| Photos of the teeth, the failure and a ruler | Shows wear pattern and why the old gear failed |
Not sure about a value? Send what you have. We tell you within 24 hours whether it is enough or what else we need.
Built for Breakdowns and Old Gearboxes
Questions About Replacement Gears
Can you make a gear without a drawing?
Yes. From the worn part, or from photos and measured values, we determine module, pressure angle, helix, profile shift and tooth thickness, prepare a drawing and send it for your approval before production.
Do you make single pieces?
Yes. There is no minimum order. Single replacement gears, matched pairs and small batches for spare-part stock are all quoted.
How fast can you deliver?
It depends on size, material and heat treatment. We confirm the lead time in the quotation and plan urgent jobs around your shutdown date. Road transport from İzmir reaches Central Europe in a few days.
The mating gear is worn as well. What then?
We usually recommend replacing both as a matched pair, so tooth thickness and contact pattern are right. We can quote both options.
Do you sign an NDA?
Yes, before you send drawings if you need one. All drawings are treated as confidential.
Gearbox down? Send photos and a few dimensions today.
We answer within 24 hours on working days with questions or a quotation plan.