ギアボックスジョイント
Gearbox joints connect the gearbox output to the propeller shaft and allow the driveline to transmit torque while accommodating changes in angle and length. They cover the coupling and joint parts at the gearbox end of the driveline, such as flange and slip joints, that keep power flowing as the shaft moves.
As the vehicle moves and the suspension works, the distance and angle between the gearbox and the axle change. The joints at the gearbox end let the shaft lengthen, shorten, or pivot while still passing the engine torque through, working alongside the universal joints to keep the driveline smooth.
These joints wear from friction, vibration, and loss of lubrication, which shows up as play, vibration, or clunking when power is applied. Worn or dry joints can transmit harshness into the driveline and accelerate wear elsewhere, so they should be inspected and serviced or replaced when symptoms appear. Lubrication, where provided, extends their life.
The correct joint depends on the gearbox, the propeller shaft, and the joint type and dimensions. Confirm the part against the vehicle specification before fitting.
Related categories
Frequently asked questions
What are gearbox joints?
They are the coupling and joint parts at the gearbox end of the driveline that transmit torque while allowing the shaft to change angle and length.
What are the signs of a worn gearbox joint?
Play, vibration, or clunking when power is applied, and harshness transmitted into the driveline. These should be inspected by a technician.
How are these joints maintained?
Where a joint has a grease fitting, regular lubrication extends its life. Worn or dry joints are serviced or replaced before they damage other driveline parts.
Why does the driveline need to change length?
As the suspension moves, the distance between the gearbox and axle changes. Slip and flange joints let the shaft accommodate this while still transmitting power.