Differential Crown Wheel and Pinion Set

This crown-wheel and pinion product is offered for differential rebuilding enquiries. Select the gear set by the axle identification and the matching tooth combination.

Include both gear markings, tooth counts, crown-wheel diameter and mounting-hole pattern, together with the pinion length and spline arrangement. The gears should be selected as a matching set.

Send the vehicle and axle identification, crown-wheel and pinion tooth counts, spline details and quantity. Include the flange and housing dimensions for the assembly required.

Contact TOSEN for a quotation or browse Differential Parts.

The differential crown wheel and pinion set is the matched gear pair at the heart of an axle’s final drive, consisting of the crown wheel that mounts to the differential case and the pinion that receives rotation from the propeller shaft. The tooth counts of the two gears set the axle’s final-drive ratio, the mesh between them carries the full driving load, and the geometry of the pair turns the drive through ninety degrees on its way to the axle shafts. The set is a rebuilding component, not a complete differential assembly: it replaces the gears inside an axle whose remaining parts stay in service, and the two gears are supplied and installed together because a crown wheel and its pinion are machined as a matching set.

• Component: crown wheel and pinion set — a matched gear pair, not a complete differential assembly
• System: axle final drive
• What the gears do: set the final-drive ratio, carry the driving load, redirect the drive by ninety degrees
• Supply condition: brand new, selected and installed as a matching set

The crown wheel and pinion set is matched to an axle through the markings and measurements of the gears it replaces, since the set itself carries no vehicle identification. Both gear markings are compared, the tooth counts of the crown wheel and the pinion are recorded, and the crown-wheel diameter and the mounting-hole pattern are measured, together with the pinion length and the spline arrangement. Identical readings on those points mean the same ratio and the same installation interfaces, which is what a rebuild requires. Enquiries that state the axle the gears came from, alongside the measurements, let TOSEN confirm the correct set before it ships.

• Identification to compare: the markings on both gears
• Counts to record: crown-wheel teeth and pinion teeth
• Dimensions to measure: crown-wheel diameter, mounting-hole pattern, pinion length, spline arrangement
• Selection principle: the gears are ordered as a set, matched to the axle they came from

Every differential crown wheel and pinion set from TOSEN is new production and is inspected as a pair before dispatch. The inspection checks the markings on both gears, verifies the tooth counts against the enquiry and measures the crown-wheel diameter and the mounting-hole pattern, so the set that leaves the warehouse corresponds to the gears described in the order. The pinion length and the spline arrangement are confirmed in the same step, and rebuilders who want the evidence with the quotation can request photographs of the actual pair, which keeps the rebuild schedule intact once the parts arrive.

What is a differential crown wheel and pinion set?

A differential crown wheel and pinion set is the matched pair of gears that forms the final drive inside a vehicle axle, with the crown wheel mounted on the differential case and the pinion driven by the propeller shaft. The two gears set the axle ratio, turn the drive through a right angle and carry the full driving load between them. The set is supplied as a gear pair for rebuilding work, and the gears are installed together because they are machined as a matching set.

Is a crown wheel and pinion set the same as a complete differential assembly?

No. The set covers the gear pair only, while a complete differential assembly adds the surrounding components that house and support the gears. A rebuild that has a sound carrier but worn gears needs the set, whereas a failure affecting the whole unit calls for the complete assembly. Stating which situation the workshop faces lets TOSEN supply the correct product from the two ranges.

How are replacement gears matched to an axle?

Match the new pair against the old one on the markings of both gears, the crown-wheel tooth count, the pinion tooth count, the crown-wheel diameter, the mounting-hole pattern and the pinion length with its spline arrangement. Identical figures on every point mean the same ratio and the same interfaces, which is what a rebuild requires. Sending the old gears’ details with the axle identification lets TOSEN confirm the match before dispatch.

What should a crown wheel and pinion enquiry include?

Include the vehicle and axle identification, the markings from both old gears, the crown-wheel and pinion tooth counts, the crown-wheel diameter, the mounting-hole pattern and the pinion length with its spline arrangement, plus the quantity required. Photographs of the removed gears help verify the readings. With those details TOSEN can quote the matching set for the axle being rebuilt.