CNC Machined Gears
Gears transmit motion through meshing teeth, so the tooth profile and tooth-to-bore concentricity decide how smoothly and quietly they run. We machine custom spur, helical, and bevel gears in metal and engineering plastic for prototypes and low-to-mid volume.
What is a CNC machined gears?
A gear is a toothed wheel that meshes with another to transmit torque and change speed or direction. CNC machining (often with form cutters or wire EDM for the tooth profile, plus turning for the blank and bore) produces custom and low-volume gears without the tooling cost of hobbing setups. The quality-critical features are the involute tooth profile, the pitch, and concentricity between the teeth and the bore.
Common materials
Strong, fatigue-resistant gear material, usually heat-treated for tooth hardness.
For corrosion resistance in food, medical, and marine gearing.
Quiet-running, self-lubricating gears for instruments and light loads.
Low-friction, quiet, lightweight plastic gears for low-load motion.
Typical tolerance
Tooth profile to AGMA / DIN class on request
Bore-to-tooth concentricity and tooth profile accuracy govern smoothness and noise; we machine the blank, bore, and teeth to a stated gear quality class.
How we machine them
Produces the gear blank, bore, hub, and faces.
Cuts the tooth profile — wire EDM for hardened blanks and fine pitches.
Hardens steel gear teeth for wear and load capacity.
Design tips that lower cost
Specify the gear standard and class
Give us the module/diametral pitch, pressure angle, tooth count, and the AGMA or DIN quality class you need. That defines the tooth geometry unambiguously and sets the inspection criteria.
Hold the bore concentric to the pitch circle
A gear that's eccentric to its bore runs rough and noisy no matter how perfect the teeth are. Concentricity between bore and teeth is the key callout.
Plan hardening for steel gears
Steel gears are usually machined soft, then heat-treated for tooth hardness. We sequence machining and heat treat so the bore and teeth finish to size after hardening.
Choose plastic only for light loads
POM and nylon gears are quiet and self-lubricating but carry far less load than metal. Match the material to the torque and duty cycle.
Industries we machine gears for
Gears — frequently asked
What types of gears can you machine?
Spur, helical, bevel, and worm gears, plus racks and sprockets, in metal and engineering plastic. Share the gear parameters (module, pressure angle, tooth count) or a drawing.
Can you cut gear teeth on a hardened blank?
Yes — for hardened steel we use wire EDM to cut the tooth profile after heat treatment, which avoids distortion and holds the profile accurately.
Do you make plastic gears?
Yes — POM (Delrin) and nylon gears for low-load, quiet, self-lubricating motion in instruments and light mechanisms.
Need gears machined?
Upload your drawing — our engineers review it for DFM and send a real quote within 24 hours. No minimum order.
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