Workpiece Clamping Elements

ROEMHELD B1.914 Work Supports: Extending hydraulically – contact by spring force, double acting

OBSOLETE ITEM - CONTACT HYQUIP

• Maximum operating pressure 500 bar
• External thread: M68
• Maximum load force: 20 kN
• Plunger diameter: 32 mm
• Plunger stroke: 12 mm
• Maximum flow rate: 35 cm³/s
• Elastic deformation: 1.3 µm/kN

Work supports are used to provide a self-adjusting rest to avoid deflection and vibration of the workpieces during machining. It is recommended to use double-acting elements if applied in larger hydraulic clamping fixtures with long lines, especially if the return oil is cycled and has to return in a predetermined time.

ROEMHELD B1.854 Swing Clamps with Sturdy Swing Mechanism: Bottom flange type, with optional position monitoring, double acting

• Maximum operating pressure 350 bar
• Maximum clamping force: 6 - 22 kN
• Rod diameter: 16 - 32 mm
• Piston diameter: 23 - 45 mm
• Maximum flow rate: 10 - 57 cm³/s

This hydraulic swing clamp is a pull-type cylinder where a part of the total stroke is used to swing the piston. The favourable area ratio (piston/piston rod) allows high clamping forces already at relatively low oil pressures. 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 or unloading. 

ROEMHELD B1.8271 Mini Compact Clamp: Cartridge type, clamping force 1.3 kN double acting, max. operating pressure 200 bar

• Clamping force 1.3 kN
• Maximum operating pressure 200 bar
• Clamping force at 200 bar: 1.3 kN
• Usable clamping stroke: 5 mm
• Adm. flow rate 5 cm³/s
• Minimum pressure 20 bar

The hydraulic mini compact clamp is a double acting pull-type cylinder where a part of the linear stroke is used to swing the clamping lever onto the workpiece. In order to minimise the dimensions, the usual flange for screw fixing is omitted.

ROEMHELD B1.828 Compact Clamps: Manifold-mounting type, pneumatic position monitoring optional, double acting

• Maximum operating pressure 250 bar
• Maximum clamping force: 2.5 - 10.5 kN
• Usable clamping stroke: 4.5 - 8.5 mm
• Adm. flow rate 4 - 25 cm³/s

The hydraulic compact clamp is a doubleacting pull-type cylinder where a part of the linear stroke is used to swing the clamping lever onto the workpiece.

ROEMHELD B1.910 Work Supports: Extending hydraulically – contact by spring force, single acting with spring return

• Maximum operating pressure 500 bar
• External thread: M78
• Maximum load force: 48 kN
• Plunger diameter: 40 mm
• Plunger stroke: 18 mm
• Maximum flow rate: 70 cm³/s
• Elastic deformation: 1 µm/kN

With the B1910 range the support plunger is retracted in off-position. When pressurised the support plunger moves against the inserted workpiece by means of spring force. With increasing oil pressure, the plunger locks hydraulically. After the system has been unclamped, the support plunger returns to off-position. The support plunger is provided with female thread to enable the use of threaded pieces for height adjustment. 

ROEMHELD B1.880 Swing Clamps with Overload Protection Device: top flange, single and double acting

• Maximum operating pressure 500 bar
• Maximum clamping force: 2.8 - 41 kN
• Rod diameter: 20 - 50 mm
• Piston diameter: 25 - 63 mm
• Clamping stroke: 11 - 50 mm
• Maximum flow rate: 3 - 28 cm³/s

ROEMHELD B1.490 Slideway Locking Cylinders: single acting without spring return max. operating pressure 500 bar

• Max. operating pressure 500 bar
• Max. locking force: 24.5 - 49 kN
• Piston stroke: 2 mm

ROEMHELD B1.9471 Threaded-Body Work Supports: with metallic wiper edge, double acting

• Maximum operating pressure 70 bar
• External thread: M26 - M45
• Maximum load force: 3 - 10 kN
• Plunger diameter: 10 - 16 mm
• Plunger stroke: 6,5 - 10 mm
• Elastic deformation: 5 - 9 μm/kN

The support plunger is hydraulically extended and retracted by means of a small double-acting cylinder. Contact to the workpiece is made by spring force. The pressure can be easily exchanged. Locking of the support plunger through the slotted clamping sleeve is made by means of a ringshaped conical hydraulic piston where the locking force is transmitted by a low-friction ball shell. Unlocking of the support plunger is made by spring force.

ROEMHELD B1.8801 Swing Clamps with Reinforced Swing Mechanism: top flange, position monitoring optional, double acting

• Maximum operating pressure 500 bar
• Maximum clamping force: 6.8 - 41 kN
• Rod diameter: 32 - 50 mm
• Piston diameter: 40 - 63 mm
• Clamping stroke: 20 - 22 mm
• Maximum flow rate: 20 - 55 cm³/s

Hydraulic swing clamps are used for clamping of workpieces when it is essential to keep the clamping area free of straps and clamping components for unrestricted workpiece loading and unloading.

ROEMHELD B1.494 Spring Clamping Cylinder: pulling, with hydraulic return

• Max. operating pressure 250 ...320 bar
• Max. clamping force: 16 - 100 kN
• Unclamping stroke: 0.5 and 1 mm
• Unclamping pressure: 210 - 300 bar

ROEMHELD B1.900 Work Supports: Off-position extended – contact by spring force, single acting

• Maximum operating pressure 500 bar
• External thread: M68 - M78
• Maximum load force: 32 - 48 kN
• Plunger diameter: 32 - 40 mm
• Plunger stroke: 16 - 18 mm
• Elastic deformation: 0.9 µm/kN

This spring-loaded plunger positions itself against the workpiece with an adjustable light spring force. Hydraulic locking is made together with hydraulic clamping of the workpiece, or independently. The support plunger is provided with female thread to enable the use of threaded pieces for height adjustment. Oil supply can alternatively be effected from the side or from below. The internal part of the work support is protected against dust and swarf by a sintered metal air filter. Recommended minimum pressure 100 bar.

ROEMHELD B1.8802 Swing Clamps with Reinforced Swing Mechanism: top flange, position monitoring optional, double acting, pendulum eye/fork head

• Maximum operating pressure 500/160 bar
• Maximum clamping force: 1.4 - 11.2 kN
• Rod diameter: 20 - 32 mm
• Piston diameter: 25 - 40 mm
• Clamping stroke: 22 - 25 mm
• Maximum flow rate: 8 - 20 cm³/s

The piston end of this swing clamp is designed as pendulum eye or fork head. By means of a double clamping arm 2 workpieces can be clamped at the same time. For both versions a springy element is required in order to maintain the double clamping arm in the unclamped position in horizontal position.