Gearboxes & Gears: What Buyers Should Know
Gearboxes and gears transmit and modify speed and torque in conveyors, mixers, cranes, and automotive drivetrains. Buyers source from China gearbox manufacturers for helical, planetary, worm, and spur designs at competitive prices.
The critical parameters are gear ratio, torque rating, gear type, and material hardness. Heat treatment such as carburizing and quality certifications like ISO 9001 determine service life. The curated suppliers below are screened against these criteria.
Curated Suppliers — Gearboxes & Gears
7 Checks Before Choosing a Gearboxes & Gears Supplier
1. Ratio & torque
Match speed ratio and torque rating to the driven load.
2. Gear type
Choose helical for smoothness, planetary for compact high torque, worm for self-locking.
3. Material
Ask for alloy steel gears with proper case hardening.
4. Heat treatment
Carburized or induction-hardened teeth extend service life.
5. Lubrication
Confirm oil or grease lubrication and sealing for the mounting position.
6. Noise
Helical gears run quieter than spur gears in continuous duty.
7. Certification
Verify ISO 9001 and, for vehicles, IATF 16949 where required.
Frequently Asked Questions
What is the difference between helical and worm gearboxes?
Helical gearboxes are more efficient for continuous duty, while worm gearboxes offer high ratios and self-locking.
Can Chinese factories make custom gear ratios?
Yes, most manufacturers offer custom ratios, shafts, and mounting flanges through OEM/ODM.
What materials are used for gears?
Alloy steels like 20CrMnTi are common, with carburizing or induction hardening for wear resistance.
What is the MOQ for gearboxes?
Standard units often start around 10-50 pieces, with custom designs negotiated per project.