Workpiece Clamping Elements

ROEMHELD B1.481 Pull Type Double-Acting Bore Clamp with centering function, a compact design with high clamping force and repetitive clamping accurtacy of 0.005mm

• Bore diameter ranges from 16 to 46 mm
  
• Maximum low-clamping force ranges from 0.6 to 7.9 kN
  
• Admissible torque 15 - 300 Nm
  
• Double acting 

This Bore Clamp is a combination of a double acting pull-type cylinder equipped with a segement clamping bushing, which is pulled by a tie rod over a fixed cone. Thereby the segment clamping bushing expands radially to the bore diameter of the workpiece to be clamped.

ROEMHELD I4.130 Fixture Clamp, Position Flexible max. clamping force 8 kN, jaw width 40 mm double acting, max. operating pressure 250 bar compensate machining forces from all directions.

• Maximum clamping force: 8 kN
• Maximum retention force: 10 kN
• Jaw width: 40 mm
• Clamping stroke: 2x 8 mm
• Maximum flow rate: 17 cm³/s
• Maximum operating pressure 250 bar

This fixture clamp with position-flexible clamping function consists of a very slim basic body with 2 integrated hydraulic cylinders. The piston forces are transmitted by two channels to the two clamping slides that can be moved independently from each other. During clamping both clamping slides contact the workpiece nearly without force.

ROEMHELD H4.307 Parallel Slide Centering Element: double acting

• Maximum operating pressure 500 bar
• Clamping force / jaw: 2.8 - 8.8 kN
• Stroke / jaw: 6 - mm
• Piston Ø: 12 - 20 mm
• Centering repeatability: ±0.02 mm

By a clever arrangement of the centre of rotation to the hydraulic piston the retaining force of a clamping jaw is three times higher than the clamping force. If only one clamping jaw acts at the workpiece, the clamping force is twice as large. This happens as long as the workpiece is moved to the centre.

ROEMHELD B1.940 Single Acting Threaded Body Work Supports

• Maximum operating pressure 500 bar
• M30 external thread
• Maximum load force: 6.5 - 9.5 kN
• Plunger diameter: 16mm
• Plunger stroke: 8 - 15mm
• Maximum flow rate: 25 cm³/s
• Elastic deformation: 4 µm/kN

Hydraulic work supports are used to provide a self-adjusting rest for the workpiece during the machining operations. They compensate the workpiece surface irregularities, also deflection and vibration under machining loads. Two sizes are available. The threaded-body design of the elements allows direct installation in clamping fixtures, in horizontal or vertical mounting position, and thereby a space-saving arrangement.

ROEMHELD B1.8500 Swing Clamps with Sturdy Swing Mechanism: Top flange type, with optional position monitoring, double acting

• Maximum operating pressure 70 bar
• Maximum clamping force: 2 - 13.3 kN
• Rod diameter: 14 - 36 mm
• Piston diameter: 25 - 65 mm
• Clamping stroke: 8/10 mm
• Maximum flow rate: 13 - 167 cm³/s

The hydraulic swing clamp is a pull-type cylinder where a part of the total stroke is used to swing the piston. Due to the sturdy swing mechanism the angle position of the clamping arm remains the same after a slight collision with the workpiece during loading and unloading or during clamping. The angle position of the clamping arm is fixed with a dowel pin.

ROEMHELD B1.8252 Mini Hinge Clamp: with metallic wiper edge, double acting

• Maximum operating pressure 250 bar
• Maximum clamping force: 2.2 kN
• Usable clamping stroke: 3 mm
• Adm. flow rate 8 .. 15 cm³/s

ROEMHELD B1.8242 Slide Pivot Clamp: compact version, with optional position monitoring, double acting

OBSOLETE ITEM - CONTACT HYQUIP

• Maximum clamping force: 10 kN
• Operating pressure 350 bar maximum
• Clamping stroke: 5.5 mm

In the case of the slide pivot clamp the piston force is deviated by 180° by the clamping lever and is available as clamping force with virtually no loss of efficiency. Kinematics of the slide pivot clamp allow sliding back of the clamping lever during unclamping for unimpeded insertion of the workpieces.

ROEMHELD B1.711 Hydro Cylinder with Locking Piston single acting with spring return

• 3 body variants; threaded-body, block and low-block cylinders
• Single acting with spring return
• Maximum operating pressure 500 bar
• Fixtures without tubes are possible

Hydro cylinders with locking piston are singleacting plunger cylinders, similar to the design of the proved threaded-body cylinders as per data sheet B 1.461. When pressurising the element, the piston will be expanded and locked in the cylinder body.

ROEMHELD B1.4841 Bore Clamps: Block-type, without centring function, double acting, for bore diameter 7.8 - 17.7 mm, max. operating pressure 250 bar

OBSOLETE ITEM - CONTACT HYQUIP

• Double acting
• Operating pressure 250 bar maximum
• Bore hole diameter ranges from 7.8 to 17.7 mm
• Maximum low-clamping force 5.1 - 9.8 kN
• Expansion force , radial: 9 - 14 kN

This bore clamp is a double-acting pull-type cylinder. An exchangeable clamping bushing is fixed to the piston. The four segments of the clamping bushing are radially expanded with spring force by a pyramid-shaped clamping bolt. Thus the expansion force is always the same and independent of the hydraulic clamping pressure.

ROEMHELD B1.9401 Threaded Body Work Support: M 30 x 1.5, metallic wiper edge, 2 sizes, 3 types of function, single acting

• Maximum operating pressure 500 bar
• Cross section of the body: 70x48 - 140x105 mm
• Maximum load force: 8 - 40 kN
• Plunger diameter ranges from 16 to 40 mm
• Plunger stroke: 8 - 20 mm
• Maximum flow rate: 25 cm³/s
• Elastic deformation: 0.7 - 1.0 µm/kN

In the body of the threaded-body work support a thin-walled locking bush is integrated, which locks cylindrically around the freely-movable support plunger when pressurising the element with hydraulic oil.

ROEMHELD B1.8510 Swing Clamps with Sturdy Swing Mechanism: Top flange type, with optional position monitoring, double acting

• Maximum operating pressure 120 bar
• Maximum clamping force: 3.4 - 22.8 kN
• Rod diameter: 14 - 36 mm
• Piston diameter: 25 - 65 mm
• Clamping stroke: 8/10 mm
• Maximum flow rate: 13 - 167 cm³/s

The hydraulic swing clamp is a pull-type cylinder where a part of the total stroke is used to swing the piston. Due to the sturdy swing mechanism the angle position of the clamping arm remains the same after a slight collision with the workpiece during loading and unloading or during clamping. The angle position of the clamping arm is fixed with a dowel pin.

ROEMHELD B1.8262 Mini Hinge Clamps 70 bar

• With metallic wiper edge
• Double acting
• Maximum clamping force: 2.2 kN
• Usable clamping stroke: 3 mm
• Adm. flow rate 45 - 50 cm³/s
• Operating pressure 70 bar maximum

When pressurising the element, the piston moves upwards and swivels the clamping lever over the hinges forwards and at the same time downwards onto the workpiece. The piston force is deviated by 180° and is available as clamping force with virtually no loss of efficiency.