Gears for Mining and Quarrying Equipment
Crushers, mills, conveyors and screens run in abrasive dust under heavy, uneven load. We manufacture robust replacement and OEM gears for mining and quarry equipment to your drawing.
Abrasive Dust and Heavy, Uneven Load
Mining and quarrying equipment rarely runs at a steady load. Crushers see shock every time a hard rock enters the chamber; conveyors start fully loaded; mills turn tonnes of ore and media for years. Fine abrasive dust finds its way into gearboxes and accelerates wear.
Nika Gears manufactures gears for these machines with tough cores, hardened flanks and generous root fillets – built to tolerate overload and contamination.
Typical requirements
- Loadshock, continuous
- Environmentabrasive dust, moisture
- Typical gearsspur, helical, pinion shafts
- Sizeup to Ø1,800 mm, m30
- Materials42CrMo4, 34CrNiMo6, 18CrNiMo7-6
- Hardeninginduction, case, Q+T
Where Do Our Gears Run in Mines and Quarries?
Grinding Mill Pinions
Pinion shafts driving mill gears, and gearbox stages in ball, rod and vertical mill drives.
- Forged pinion shafts
- Induction or case hardened
Crusher Gears
Bevel gears for cone crushers and spur and helical gears for jaw, impact and roller crusher drives.
- Shock-resistant materials
- Matched bevel sets
Conveyor and Screen Drives
Helical and bevel-helical gearbox components, drive shafts and splined shafts for belt conveyors, feeders and screens.
- Series spare parts
- Drive pulley shafts
Which Materials for Mining Gears?
| Application | Typical choice |
|---|---|
| Mill pinions | 18CrNiMo7-6 case hardened and ground, or 34CrNiMo6 induction hardened |
| Cone crusher bevel sets | 18CrNiMo7-6 or 17CrNiMo6 case hardened |
| Conveyor gearbox gears | 20MnCr5 or 18CrNiMo7-6 case hardened and ground |
| Drive shafts | 42CrMo4 or 34CrNiMo6, Q+T, induction-hardened seats |
Final material and heat treatment follow your drawing. We advise when the specification is open.
Which Gear Types for Mining?
Related industries: steel and metal · construction machinery · recycling and wastewater · all industries
Mining Gear Questions
What is the largest mining gear you can make?
External gears up to Ø1,800 mm and module 30. For larger girth gears, contact us with the drawing and we advise.
Can you supply cone crusher bevel gear sets?
Yes, as matched bevel gear and pinion sets made to drawing or from a sample.
Do you supply conveyor gearbox spare parts?
Yes – gears, pinion shafts, splined shafts and hubs, as single parts or complete sets.
Gears That Survive Mining Duty
In mining, gear failure means more than a repair bill – it stops the crusher, the mill or the conveyor that feeds the whole plant. Gears for mining equipment must tolerate shock, overload and contamination, and spares must be available quickly when an older machine needs a replacement.
Material and heat treatment
Mining gears combine a tough core with a hard surface. Case-hardened 18CrNiMo7-6 is the standard for highly loaded gearbox gears and pinions; large gears and pinions are often through-hardened 34CrNiMo6 with induction-hardened flanks. Forged blanks give better fatigue strength than bar or plate.
Pinions do the hard work
The pinion of a mill or conveyor drive makes many more load cycles than the wheel it drives. It is usually the first part to wear. We manufacture pinion shafts with integral teeth, ground after hardening, so they can be replaced without changing the large gear.
Crushers
Cone crushers rely on a bevel gear set to turn the eccentric. Jaw and impact crushers use spur and helical stages in their drives. All see high peak loads, so root strength and core toughness matter as much as surface hardness.
Spares for older equipment
Many mines run equipment whose original manufacturer no longer supplies parts. We reverse-engineer worn gears from samples, prepare drawings for your approval and manufacture replacements with full EN 10204 3.1 documentation.
Nika Gears supplies mining gears from Türkiye to operators and equipment builders across Europe. Send your drawing or sample details.
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.