Cosber Industrial | KJX Series Axle Play Detector

Axle Play Detector

KJX-10 and KJX-18 is a Hydraulic play detector used for inspecting the suspension system and steering system's Joint Play condition in a vehicle chassis. The play detector is made by three parts: 2 movement plates, hydraulic system and electric control system (with handhold remote & torch).

System and electric control:

  • The hydraulic system consists of oil tank, oil filter, motor-oil pump, overflow valve, pressure meter, reversing valve, oil cylinder and HP oil pipe etc.
  • See the operating and hydraulic pressure principle of the hydraulic system.
    • Turn on the rotary switch of the control box, the power supply indicator will be ON, the transformer will be electrified and the hydraulic station will be ready.
    • Press down any switch (left, right, front and back) of the controller, the motor will be started. At the same time, open one reversing valve, the HP oil will be sent to one of the oil cylinders via the opened reversing valve, thus the piston of this oil cylinder will be driven and then the sliding plated will be driven to go forward, the piston of the other side will be pressed back to its oil cylinder and the oil in which will go back to the oil tank via the reversing valve.
    • When the reverse control switch is pressed down, the sliding plate will move to the negative direction.
    • The pressure meter only shows the pressure when the platform is subject to any resistance. When the platform reaches the end, the pressure meter will show the operating pressure, at this time the pressure oil will go back to the oil tank via the overflow valve.


  • Test plates - single control
  • Plate movement in counter direction (4 ways)
  • Plate movement in same direction (8 ways)
  • Visual Test
  • Coated sand on the surface
  • Wireless remote control
  • Plate Dry and Wet Condition (Corundum binding)
  • Plate Dry Condition (Boardes)
Axle Play Detector on Test

What inspected with axle play..?

  • axle suspension
  • axle stub
  • wheel bearing
  • tie-rod ends
  • stabiliser
  • trolley-pivot
  • twin-axle suspension
  • trailer coupling device
  • etc
Model KJX-10 | KJX-18
Plate dimensions 1000mm x 750mm
Maximum displacement of plate 100mm x 100mm
Maximum axle load Up to 13.000kg | Up to 20.000kg
Movement direction 4/8 directions (Left/Right Plate: front/ rear & left / right
Max.displacement force of platen 23kN | 30kN
Control Individually per platform
Power supply to control unit Individually per platform
Motor Vertical Y90L-4 0.75kW 380V / 2.2kW 380V
Hydraulic unit operating pressure 10Mpa
Max. Flow 3.56 l/min | 4 l/min
Capacity of Oil tank 10L | 30L
Hydraulic Oil N46 machine oil (old No. 30# machine oil)