Hydraulic Shearing Machine For Sale

We have been producing press brakes for more than 20 years and have rich experience. At the same time, we have established deep relationships with various global technology and parts partners to ensure the stable operation of the press brakes we sell.

Guillotine Shear

Guillotine Shear

It's the 2nd generation hydraulic shearing machine and the most popular type.

Hydraulic Shear Machine

Swing Beam Shear

This is the most economical hydraulic shearing machine for cutting metal plate.

Shearing Blade

Shearing Blade

Blade material: 55SiCr, 9CrSi, 6CrW2Si, H13, Cr12MoV

Common faults and troubleshooting of the guillotine shear

The main motor cannot be started #

Causes

  • Emergency stop switch off
  • 1QF1 switch off
  • Lack of phase
  • Hydraulic oil cannot be extracted

Solutions

  • Turn on the emergency stop switch
  • Close 1QF1 switch
  • Check the circuit
  • Check whether the filter is blocked

NCRDY is not displayed #

Causes

  • The start switch of CNC system is not started
  • X-axis, shear angle and clearance are not in place

Solutions

  • Press the NC system start switch
  • Press the hand wheel control key once, move the cursor to relevant positions respectively, check which of X, a and G is not in place, and analyze the cause.

The X-axis does not work properly #

Causes

  • Servo drive alarm
  • 1QF3 not closed
  • The power line or encoder line or servo motor fails

Solutions

  • Check the cause of the alarm (see remarks)
  • Close 1QF3
  • Check the wiring

The size of X-axis is 5mm and 10mm larger or smaller than the normal state #

Causes

The position finding is not accurate when returning to the reference point.

Solutions

  • Shut down and restart
  • Move the reference point sensor 1-2mm or adjust the sensing distance of the sensor

The blanking size is different from the actual programmed size #

Causes

  • Caused by artificial feeding
  • Rear stop movement of machine tool

Solutions

  • Refeeding and shearing
  • Corrected X reference point

The machine cannot go down #

Causes

  • Down valve stuck
  • No signal to downstream valve
  • No main pressure

Solutions

  • Check down valve
  • Check the control circuit
  • Check the main pressure valve

No main pressure #

Causes

  • Main motor not started
  • The main pressure valve is damaged or inoperative
  • PLC control circuit failure

Solutions

  • Start the main motor
  • Replace or clean the main pressure valve and check the control valve coil circuit
  • Check PLC controller

The slider does not drop after the foot switch is depressed #

Causes

  • The controller has no “ncrdy” signal
  • Loose line
  • PLC no signal output

Solutions

  • Check that there is no “ncrdy” reason
  • Check and connect relevant circuits according to the electrical schematic diagram
  • Check PLC controller

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