Finished heavy duty propeller shafts staged on a pallet before packing

Transmission System

Drive Shaft and Rear Axle Shaft Assemblies

The drive shaft carries torque from the transmission to the differential and on to the wheels, and it has to do that while the suspension moves and the distance between the two ends keeps changing.

Rear axle shaft assembly with universal joint and splined end

Overview

Drive Shaft and Rear Axle Shaft

The drive shaft carries torque from the transmission to the differential and on to the wheels, and it has to do that while the suspension moves and the distance between the two ends keeps changing. It is a rotating assembly, so balance is not optional: an out of balance shaft is felt through the floor at motorway speed. Every shaft we ship has had a 100% dynamic balance test to G16.

Key Benefits

  • 100% dynamic balance test to G16 on every shaft, which is what keeps motorway vibration out of the cabin
  • Single piece, two piece and constant velocity configurations to match the original layout
  • Steel, aluminium and carbon fibre options matched to the application
  • Centre bearing, universal joints and slip yoke supplied as part of the assembly
  • Matched by OE number rather than by measuring the old shaft with a tape

Who It Is For

  • Transmission and driveline distributors
  • Workshops replacing shafts as a complete balanced assembly
  • Exporters covering rear and four wheel drive platforms
  • Buyers who need the centre bearing and joints supplied with the shaft

Problems It Solves

  • Worn universal joints that cause clunking noises and vibration
  • Imbalance that leads to excessive vibration and wear on other drivetrain components
  • A bent or damaged shaft that causes severe vibration and compromises vehicle handling
  • Rebuilt shafts that were never balanced after the joints were pressed in

Application Scenarios

  • Vibration at motorway speed traced to an out of balance or bent shaft
  • Clunking on take-up traced to worn universal joints
  • Rear axle shaft replacement on rear and four wheel drive vehicles
  • Distributor stock for platforms where the propeller shaft is a recurring replacement

Engineering

Technical Features

  • Shaft body typically made of steel, aluminium or carbon fibre for strength and durability
  • Universal joints at either end allow changes in angle between the transmission and the differential
  • Slip yoke lets the shaft expand and contract with suspension movement
  • Centre bearing supports the middle of a two piece shaft and reduces vibration
  • Flanges connect the shaft to the transmission and to the differential

Materials

  • Steel, strong and durable, commonly used in most vehicles
  • Aluminium, lighter than steel, used in performance and some luxury vehicles
  • Carbon fibre, extremely lightweight and strong, used in high performance and racing applications

At a glance

Key figures for Drive Shaft and Rear Axle Shaft
ConfigurationsSingle piece, two piece with centre bearing, constant velocity
Balance test100% dynamic balance to G16
MaterialsSteel, aluminium, carbon fibre
Matched byOE number
Minimum order1 piece
Lead time, regular items45 days
Overall length and spline countQuoted per OE reference, TBC until the number is confirmed

Values not present in the source part record are marked TBC and confirmed against your OE number before the order is placed.

Manufacturing

How It Is Made and Checked

01

Tube preparation and end forming

02

Joint and yoke assembly

03

Welding and straightening

04

100% dynamic balance test to G16

05

Protective finish and packing

Quality Control

Every shaft receives a 100% dynamic balance test based on the G16 standard before it leaves the plant, and accessories are processed by CNC centre in one time so precision is held. The company runs to ISO 9001 and IATF 16949 quality management systems.

Customisation Options

Shafts can be built to a sample or an OE number, including length, spline and flange variations. Newly developed items run 30 to 45 days.

Comparison

A single piece shaft suits shorter wheelbases and keeps the assembly simple. A two piece shaft with a centre bearing is used on longer wheelbases, where it adds support and flexibility but also adds a bearing that will eventually need replacing. A constant velocity shaft is what front wheel drive vehicles use, delivering power more smoothly with less vibration. Match the original configuration: swapping between them changes the driveline angles.

Use Guide

  1. Step 1

    Confirm the OE number, and mark the flange orientation before removing the old shaft

  2. Step 2

    Refit in the same orientation so the balance of the assembly is preserved

  3. Step 3

    Torque the flange bolts and the centre bearing carrier to the vehicle specification

  4. Step 4

    Lubricate the universal joints where the design has grease nipples

  5. Step 5

    Inspect for wear and damage at each service, particularly the joints and slip yoke, and investigate any new vibration or noise promptly

Component reference

How a Drive Shaft and Rear Axle Shaft Works

A drive shaft, also known as a propeller shaft or driveline, is a critical component in a vehicle's drivetrain. Its primary function is to transmit torque and rotational energy from the engine and transmission to the vehicle's wheels, allowing it to move. Drive shafts are commonly used in rear-wheel drive, all-wheel drive, and four-wheel drive vehicles.

Trade show display of drive shaft products

Key Characteristics of a Drive Shaft:

  • Functionality: The drive shaft transfers power from the transmission to the differential, which then distributes the power to the wheels. It accommodates changes in the distance between the transmission and the differential as the vehicle moves over uneven terrain.
  • Components: Shaft: The main tubular body, typically made of steel, aluminum, or carbon fiber for strength and durability. Universal Joints (U-Joints): Flexible joints at either end of the shaft that allow for changes in angle between the transmission and the differential. Slip Yoke: Allows the drive shaft to expand and contract with suspension movement. Center Bearing: Used in two-piece drive shafts to support the middle of the shaft and reduce vibrations. Flanges: Connect the drive shaft to the transmission and differential.
  • Types of Drive Shafts: Single-Piece Drive Shaft: Common in shorter wheelbase vehicles, consisting of a single, solid tube. Two-Piece Drive Shaft: Used in longer wheelbase vehicles, with two shafts connected by a center bearing to provide additional support and flexibility. CV (Constant Velocity) Drive Shaft: Used in front-wheel drive vehicles, allowing for smoother power delivery with less vibration.
Drive shaft assembly with splined stub and constant velocity joint
  • Materials: Steel: Strong and durable, commonly used in most vehicles. Aluminum: Lighter than steel, used in performance and some luxury vehicles. Carbon Fiber: Extremely lightweight and strong, used in high-performance and racing applications.
  • Maintenance: Regular inspection for signs of wear or damage, especially on the U-joints and slip yokes. Lubrication of U-joints to ensure smooth operation and prevent wear. Checking for and addressing any unusual vibrations, noises, or signs of imbalance.
  • Common Issues: Worn U-Joints: Can cause clunking noises and vibrations. Imbalance: Can lead to excessive vibration and wear on other drivetrain components. Bent or Damaged Shaft: Can cause severe vibration and compromise vehicle handling.

FAQ

Drive Shaft and Rear Axle Shaft FAQ

Are your shafts balanced?

Yes. Every shaft receives a 100% dynamic balance test based on the G16 standard before packing.

Do you supply two piece shafts with the centre bearing?

Yes, the assembly includes the centre bearing where the original design uses one.

Can you match a shaft from an OE number?

Yes. That is the preferred route, because length and spline count are what separate similar shafts on the same platform.

Do you make carbon fibre shafts?

Carbon fibre is used in high performance and racing applications. Tell us the application and we confirm whether it is available for that reference.

What is the minimum order?

One piece.

How long is the lead time?

45 days for regular items and 30 to 45 days for newly developed shafts.

Next step

Confirm the Fit Before You Order

Send the OE number and the vehicle. We return the interchange references and the applications that number covers, and quote against them.

Office hours
Monday to Friday 08:30-18:00 China Standard Time (GMT+8)