Ask a clutch specialist.

Clutch is the mechanisms used to transmit or interrupt the movement of a rotating shaft to another shaft in the same direction. The clutch is located between the engine and the gearbox and transfers or interrupts the engine's power to the gearbox with the action of the clutch pedal.

Clutch kits consist of clutch cover, clutch disc, bearing and flywheel. It is supplied as 2 Piece (pressure, disc), 3 Piece (pressure, disc, bearing) or as a 4 Piece complete set (cover, disc, bearing, flywheel) depending on the needs.

The clutch cover carries the clutch cover equipment and is centered on the flywheel with pins and fastened with bolts. The primary task of the Clutch cover is to engage and release engine power fully and quickly.

The clutch disc or clutch plate is the rotating part of the clutch to which friction material is attached. The equal pressure on both sides of the clutch disc disengages the clutch, allowing normal operation of the torque converter.

The clutch bearing unit engages and disengages the clutch via the diaphragm spring and pressure plate. It includes provisions for radially orienting the fork or piston.

A flywheel is a heavy disc attached to the end of a rotating shaft that helps smooth out the engine’s power pulses and store energy through rotational momentum.

Pressure plates are usually produced from gray cast iron, which has good wear and heat transfer properties. The friction surface required for the clutch is provided by metallurgical compatibility between both the gray cast iron pressure plate and the dense iron-based matrix in the clutch lining. Necessary features; chemical composition, cooling rate and heat treatment control.

The Diaphragm spring clutch uses a diaphragm or conical spring instead of coil spring to produce adequate pressure for engaging the clutch.

Today because of the advantages as; 

  • Load carrying capacities
  • Lighter and more compact
  • Pedal efficiency

Diaphragm springs are used in dry friction clutches due to advantages such as torque transmission and mechanical efficiency at high engine speeds.

  • Lifting the pressure plate during clutch disengagement
  • Transferring the engine torque from the cover to the pressure plate
  • Centering of the pressure plate

The varying speed and fluctuating torque of the internal combustion engine produces vibrations that are transmitted from the crankshaft, clutch and transmission shaft to the transmission. The low flywheel mass and lightweight construction in modern vehicles increase these effects, so helical springs have been added to the clutch disc.

Distance rivets are used to prevent the springs from being over-compressed and broken due to excessive loads. Its main task is to fix disk equipment together

The pre-damper springs, which are combined with the clutch hub, rotate in the circular direction with slightly determined small angles, softening the shock of the clutch during the first engagement.

Lace is made of high quality spring steel and has been heat treated in order not to deteriorate its properties at high temperatures caused by friction. Lace is clamped between two clutch linings and mounted with rivets.Formed surfaces in contact with the lining are for the comfort of gear shifts.

  • The friction is riveted on both sides of the lace in order to increase the friction force.
  • The air entering the channels opened on the friction surface of the pad prevents the disc from sticking to the flywheel or pressure plate when the clutch is released.
  • At the same time, the grooves facilitate good contact of the clutch disc with the flywheel and pressure plate surface, removal of dust caused by wear and cooling of the rubbing surfaces.

  • Provides smooth and jolt-free operation
  • Provides fast gear shifting of the gearbox
  • Isolate the transmission against engine torsional vibration, thereby reducing noise and wear
  • Should act as overload protection for all drivetrains
  • It should be easy to replace.

  • Take your foot off the clutch while driving. This habit, which makes it easy to change gears, causes the clutch to wear out by operating it continuously.
  • If you are driving a manual vehicle, do not brake the engine by downshifting, except when it is not necessary to reduce your speed. It is to reduce the braking speed in your vehicle.
  • Use the clutch only when necessary. When your vehicle stops, put the gear in neutral and wait. Keeping the clutch pressed when not in use will shorten its life.
  • Understand the clutch engagement point well when your vehicle is taking off. If you continue to press the accelerator without taking your foot off the clutch pedal after reaching the clutch point, you will cause premature wear of the clutch.
  • While shifting gears, fully depress the clutch pedal and slowly take your foot off the clutch pedal after shifting. Taking your foot off the pedal suddenly or leaving it on the pedal for a long time causes premature wear of the clutch disc.
  • Do not leave your vehicle in gear only when parked uphill. Be sure to use the handbrake. The pressure created by the vehicle left in gear without the handbrake shortens the life of your clutch.
  • Do not change gear more than necessary. If you can see far down the road, try to anticipate the obstacles you'll encounter to try to maintain a steady speed rather than changing gears every few minutes.

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