Hydraulic Block
Clamp Unit

HBS-A

  • For medium and large presses
  • For clamping moving bolsters as well as lower dies
  • For dies with straight clamping edges
  • Fixed installation to the sides of the press columns

Mode of operation

  • A double-acting hydraulic cylinder pushes a wedge onto the clamping edge of the die.
  • The clamping force is generated by the angle of the wedge.
  • The clamp unit is unclamped by reversing this sequence.

Description

The hydraulically driven wedge clamp unit generates the required clamping force by means of the wedge mechanism. In order to secure the clamping force, hydraulic pressure must be maintained (with pilot-con-trolled check valves, optional). Pressure sensing by the pressure switch on the hydraulic power pack is required.

In its park position, the clamping wedge is fully retracted into the housing and therefore protected against damage. To ensure that the clamping wedge remains in the park position during die change, the operating pressure must be maintained or a pilot-controlled check valve must be integrated into the unclamping line. Park and clamping positions are monitored by limit switches.

  • Low space requirements due to compact dimensions
  • Large clamping dimension tolerance
  • Minimal installation investment
  • Central operation
  • Continuous clamping force monitoring possible (pressure sensing)
  • Monitoring of clamping and unclamping positions
  • High mechanical load capacity

  • Pilot-controlled check valves
  • Flow-control valves
  • Fittings
  • Hydraulic hoses / Hydraulic accessories
  • Hydraulic power packs

Technical data

Type HBS-A 200
Clamping force [kN] 40
Max. loading force [kN] 1) 250
Max. operating pressure [bar] 100
Operating pressure: Unclamp [bar] 100
lamping dimension tolerance [mm] +/- 0,5
Stroke [mm] 35
Oil volume: Clamp / unclamp [cm3] 56 / 110
Max. oil volume flow [l/min] 2) 0,6-1,2
Limit switch: Number / type (optional)
Supply voltage
Connection type
Designation		 • two inductive proximity switches
• 10-30 V DC
• Plug-in type (M8 x 1)
• Clamping wedge in park position S1
• Clamping wedge in clamping position S2
Max. operating temperature [°C] 70
Weight [kg] 36

 

1* Mechanical damage may occur at higher loads
2* If a pump with a greater output is used, the oil flow must be reduced by means of flow control valves or one-way restrictors.