Gear Manufacturing
Custom gear manufacturing — spur, helical, bevel, worm, planetary and rack gears, pinions, shafts and splines cut in-house and reverse-engineered from your worn originals.
Custom Gear Manufacturing — When the Part Does Not Exist Anymore
Most gear failures end the same way: the manufacturer no longer stocks the gear, the lead time is months, or the price is more than the gearbox is worth. We cut replacement gears in-house — spur, helical, bevel, worm and more — measured from your worn original or built to your drawings, so an obsolete gearbox can go back to work.
Custom & Replacement Gear Manufacturing
Send us the worn gear, the mating gear, or the shaft it rides on, and we reverse-engineer it: tooth count, module or diametral pitch, pressure angle, helix angle, face width, bore, keyway and material. We then cut, shape or grind the replacement, heat-treat it when the application calls for it, and check it against the mating part before it ships.
We also manufacture gears to customer drawings and specifications for new equipment, prototypes and production runs — one piece or a batch, in steel, bronze, cast iron or other materials as the job requires.
- Reverse engineering: gears made from worn samples — no drawings needed
- Replacement gears: for obsolete and discontinued gearboxes
- Custom gears: built to your drawings and specifications
- Gear shafts & pinions: complete shaft-and-gear assemblies
- Splines: internal and external spline cutting
- Emergency manufacturing: rush gear cutting when a line is down
Gear Types We Manufacture
Replacement gears, pinions and shafts made to match your original — from a sample, a worn gear, or your drawings.
Spur Gears
Straight-tooth gears for parallel shafts — the simplest, most common gear, cut to match your module, pitch and tooth count.
Helical Gears
Angled teeth for quieter, higher-load parallel-shaft drives; single and double helical, cut and ground to spec.
Double Helical / Herringbone
Opposed helical teeth that cancel axial thrust — for heavy-duty drives.
Straight Bevel Gears
Bevel gears for shafts at 90 degrees, teeth cut straight across the cone.
Spiral Bevel Gears
Curved-tooth bevel gears for smoother, quieter right angle drives.
Hypoid Bevel Gears
Offset-axis bevel gears for high-ratio right angle drives.
Zerol Bevel Gears
Curved-tooth bevel gears with zero spiral angle — quiet, with low thrust.
Worm Gears & Wheels
Bronze worm wheels cut to match your worm, plus new worms.
Worm Shafts
Worm shafts cut and ground, single or multi-start, matched to the wheel for proper mesh and efficiency.
Planetary Gears
Sun, planet and ring gears for planetary gearboxes — matched as a set.
Sun & Ring Gears
Internal ring gears and sun gears for planetary sets, checked for concentricity.
Internal Gears
Gears with teeth on the inside of a ring — for planetary systems, couplings and special drives.
External Gears
Standard outside-tooth gears in spur, helical and bevel forms, cut to your drawings or reverse-engineered.
Pinion Gears
Small driving pinions — spur, helical and bevel — made to match the gear they drive.
Rack & Pinion
Straight and helical racks with matching pinions, for linear motion and positioning.
Miter Gears
Equal-ratio bevel gears that change direction 1:1.
Crown Gears
Gears with teeth cut on the face of a blank, for right angle drives.
Screw Gears
Crossed helical gears for non-parallel, non-intersecting shafts — quiet and compact.
Crossed Helical Gears
Helical gears on crossed shafts, for light-duty right angle drives where a bevel pair is not needed.
Face Gears
Gears with teeth cut into the face of a disc, meshing with a spur pinion at right angles.
Bull Gears
Large-diameter, low-speed gears for mills, kilns and heavy drives.
Cluster Gears
Multi-gear clusters on a single blank or shaft — for multi-speed gearboxes.
Idler Gears
Idlers that reverse direction or bridge a distance between gears, made to match the gears they connect.
Timing Gears
Precision gears for timing and synchronization, where tooth spacing and backlash are critical.
Gear Shafts
Shafts with integral gears, splines and journals — turned, milled, ground and heat-treated as one assembly.
Splines
Internal and external splines — involute, straight-sided and serrated — cut to match your mating part.
Custom Gears
One-off and special gears that do not fit a catalog category — measured, designed and cut for your application.
How We Make Your Gears
Gear Cutting & Hobbing
Teeth cut by hobbing for spur, helical and worm gears — fast, accurate, and the right choice for most replacement gears.
Shaping & Grinding
Gear shaping for internal gears and clusters; grinding for precision tooth form, quiet running and tight tolerances.
Tooth Repair
Damaged teeth assessed honestly: some can be repaired, some must be replaced. We will tell you which before we start.
Reverse Engineering
No drawing? We measure the worn gear and its mate, calculate the original geometry, and cut a replacement that meshes.
Heat Treatment
Case hardening, through hardening and stress relief as the application requires, for wear resistance and fatigue life.
Pinion & Shaft Manufacturing
Complete pinion shafts — gear, splines, journals and keyways in one piece — turned, cut and ground to your spec.
Emergency gear manufacturing is available when a line is down — call (714) 204-5167 and tell us what you need. Turnaround depends on equipment condition, required parts, job complexity and availability. Related: gearbox repair, gearbox rebuilding.
Need a gear that no longer exists? We can make it.
Call (714) 204-5167 — send the worn gear or your drawings.
Get a Quote on Your Gearbox or Gear
Tell us the brand, model and nameplate information, and what the unit is doing — noise, leaking oil, overheating, lost drive, or stopped completely. We will review it and call you back with the next step.
Pickup & delivery to our Rialto, CA shop is available nationwide. Turnaround depends on equipment condition, required parts, job complexity and availability.