Display the number+33 (0)5 18 23 20 11

Used Bevel Gears

24 produits disponibles

The bevel gear transmits power from the drive shaft to the wheels of your machine. When worn, the entire axle loses efficiency, causing noise, vibrations, and risking immobilization. With 45 years of expertise, Codimatra offers used bevel gears dismantled from carefully selected machines, then inspected and tested in our workshop in Castelculier, near Agen. Among our over 18,000 references, our advisors will help you find the right replacement part for your loader, wheeled excavator, or dump truck.

 CATERPILLAR(18)
 LIEBHERR(3)
 MECALAC(1)
 VOLVO(2)

What is a bevel gear?

A bevel gear consists of two gears: the pinion and the ring gear. It redirects the rotational motion of the drive shaft by 90° to the half shafts while reducing speed. It functions as an angle drive combined with a speed reducer. You’ll find it on the front and rear axles of loaders, wheeled excavators, and dump trucks, as well as many agricultural machines.

Calculating and explaining the reduction ratio

To calculate the reduction ratio, divide the number of teeth on the ring gear by the number on the pinion: a 41 x 7 bevel gear gives about 5.86. In other words, the drive shaft turns nearly six times for one turn of the ring gear. This ratio must remain original: a bevel gear with a different ratio changes the forward speed and unusually stresses the transmission.

Bevel gear, axle, reducer, and mechanical differential

  • Pinion: connected to the drive shaft, it drives the ring gear.
  • Ring gear: fixed to the differential housing, it transfers force to the wheels.
  • Mechanical differential: its planetary and sun gears distribute torque between left and right wheels when turning.
  • Bevel gear reducer: combines angle drive and speed reduction in one housing; see our used reducers.
  • Spiro-bevel gear: helical teeth for quieter operation, suited to high loads on construction equipment.
  • Conical bearings: support axial and radial loads of the pinion and housing, inside the axle housing.

Why choose a used bevel gear?

A new bevel gear is a significant investment, often disproportionate for a machine that already has years of service. A tested used spare part offers an economical alternative without compromising proper function. At Codimatra, each bevel gear is carefully dismantled, cleaned, then inspected and tested in our workshop before stocking. You receive a verified replacement part, ready to be fitted on your construction equipment axle.

Variety of bevel gear models: Caterpillar, Volvo, Renault, Iveco

Bevel gear adjustment: control points

Proper adjustment determines the lifespan of a bevel gear. During installation, your mechanic checks three parameters: preload of the pinion bearings, backlash between pinion and ring gear teeth, and the contact pattern, often inspected with Prussian blue. Incorrect adjustment causes whining noises and rapid wear. These steps must follow manufacturer specifications and use appropriate tools; entrust the work to a qualified workshop.

Pinion, bearing, and torque settings: installation points

  • Conical bearing torque: follows manufacturer values, applied with a torque wrench.
  • Preload: checked by the pinion’s rotational torque.
  • Shims: set the pinion position and must meet manufacturer specifications.
  • Pair replacement: pinion and ring gear are matched and always replaced together.
  • Axle oil: replaced after assembly using the recommended viscosity.

Drive shaft and sleeve, from tractor to construction machine

The bevel gear is just one link in the drivetrain. If worn, also inspect surrounding components. A bent used drive shaft or damaged transmission sleeve causes vibrations that prematurely wear the gears. Upstream, check your construction equipment gearbox. Codimatra specializes in construction machinery; for a drive shaft or tractor bevel gear, turn to TMC Bejenne, a Dubreuil group company specializing in used agricultural parts.

Our services for construction professionals

  • Pre-sale advice: Identifying the bevel gear by model, serial number, or tooth count.
  • Quotes: price and availability provided on request at 05 53 96 16 43.
  • Workshop inspection: each part is checked before shipment.
  • Delivery: shipping to your site or workshop anywhere in France.

The bevel gear transmits motion between two intersecting shafts, usually at 90°. It combines angle drive and speed reduction in a compact setup. The spiro-bevel variant features progressive engagement, quieter operation, and handles the high torque of construction machinery.

In mechanical terms, it's also known as an angle drive, conical axle, or intersecting axis gear. The term "spiro-bevel gear" refers to a helical tooth variant. For part searches, the most reliable is to provide the reduction ratio and the reference engraved on the ring gear.

A spiro-bevel gear is a bevel gear with curved teeth rather than straight ones. Multiple teeth mesh simultaneously, reducing noise and distributing forces more evenly. This is the most common solution on construction machine axles, which are subjected to high torque and repeated shocks.

Adjustment involves the pinion position, set by shims; the preload of its bearings; and the backlash between pinion and ring gear. The contact pattern is then checked. These steps require manufacturer values and proper tools. Have your mechanic or a specialized workshop perform them.

Can't find the part you're looking for?

Ask us !

* Required fields