Threaded Body Cylinders

ROEMHELD B1.4301 Threaded-Body Cylinders

• Single acting, spring return, with wiper, short version
• Operating Pressure 500 bar maximum
• 5 sizes available
• Strokes from 4 to 16 mm
• Clamping forces 2.5 to 40 kN at 500 bar

These hydraulic cylinders are threaded directly into tapped holes of a clamping fixture. These are a compact solution and can be used to great advantage in fixtures where space is at a premium. Hydraulic fluid is supplied through passageways drilled into the fixture body, this reducing the use of hydraulic pipework, fittings and hoses. The built-in spring returns the piston when hydraulic pressure is released.

ROEMHELD B1.450 Hydraulic Threaded Body Cylinders 

• Single acting, spring return with wiper
• Operating pressure 500 bar maximum
• 4 sizes available
• Strokes 8 to 16 mm
• Clamping forces 5.6 to 40 kN at 500 bar

These hydraulic cylinders are threaded directly into the tapped holes of a clamping fixture. They are a compact solution and can be used to great advantage in fixtures where space is at a premium. Hydraulic fluid is supplied through passageways drilled into the fixture body, this reducing the use of hydraulic pipework, fittings and hoses. The built-in spring returns the piston when hydraulic pressure is released. The female threads at the piston rod end is designed to accept a contact bolt.

See datasheet G 3.800 for contact bolts.

ROEMHELD B1.458 Threaded Body Cylinder:  single acting spring return

• Operating pressure 500 / 160 bar maximum
• Push force at 500 bar 2.5 kN
• Push force at 160 bar 0.8 kN
• Stroke Options 5 or 10 mm

Threaded-body cylinders are suitable for clamping of smaller workpieces in clamping fixtures. Sealing is made with the sealing ring supplied on a machined surface in a M12x1.5mm hole on the fixture. Multiple can be installed on a pitch as small as 15mm. Where the supplied sealing ring cannot be used, sealing nuts 3300-406 are available for sealing on the machined surface of the fixture as opposed to inside the threaded hole. Other mounting options included a proprietary body 3467-064 and fixing nuts 3300-408.

ROEMHELD B1.459 Threaded Body Cylinder:  single acting with spring return

• Operating pressure 160 / 500 bar maximum
• Stroke 10 mm
• Push force 2.5 kN maximum
• M16 external thread

These threaded-body cylinders allow direct tube or hose connection. Due to elimination of the pipe union a particularly compact assembly results. Depending on wall strength and fixing method (thread or bore) a certain adjustment is possible. The cylinders can also be screwed into threaded bores. Sealing is then effected by the sealing nut available as accessory. By adjustment, workpiece tolerances of more than 20 mm can be absorbed.

ROEMHELD B1.460 Threaded Body Cylinder: single acting with spring return

• Operating pressure 500 bar maximum 
• Piston diameter ranging from 12 to 32 mm
• Stroke 10 - 20 mm
• Clamping force at 500 bar (5.7 - 40 kN)
• M22 - M48 external thread

These threaded-body cylinders can be threaded directly into tapped holes in the fixture down to the hex-section of the cylinder body. Spacings between cylinders can be minimised when cylinders are arranged in a row, since the oil is fed through drilled passages in the fixture. Sealing is made with the supplied sealing ring at the bottom of the location hole. A long piston guide in combination with an O-ring/back-ring seal provides trouble-free operation.

ROEMHELD B1.461 Threaded Body Cylinder: single acting with spring return and double wiper

• Operating pressure 500 bar maximum
• Piston diameter ranging from 12 - 32 mm
• Stroke 10 - 20 mm
• Clamping force at 500 bar (5.7 - 40 kN)
• M22 - M48 external thread

These threaded-body cylinders can be threaded directly into tapped holes in the fixture down to the hex-section of the cylinder body. Spacings between cylinders can be minimised when cylinders are arranged in a row, since the oil is fed through drilled passages in the fixture.

ROEMHELD B1.462 Plunger Piston with integrated pull-back spring, stroke limitation and fastening screw form a unit that cannot be disassembled.

• Max. operating pressure 250 bar
• Piston diameter: 25 - 50 mm
• Stroke: 8 and 12 mm
• Max. push force: 12.2 - 48.7 kN
• External thread: G1/8 - G1/2

ROEMHELD B1.464 Threaded Body Cylinder: short stroke, single acting with spring return

• Operating pressure 500 bar maximum
• Piston diameter ranges from 20 to 32 mm
• Stroke Options are 4 and 8 mm 
• Clamping Force at 500 bar (5.7 - 40.2 kN)
• M38 - M56 external threads

These short threaded-body cylinders are particularly suitable for recessed installation in clamping bars (see datasheet). Oil supply is made through drilled channels. The plunger construction combined with the wiper avoids penetration of contamination and liquids into the spring area.

ROEMHELD B1.470 Threaded Body Cylinder: double acting.

• Operating pressure 500 bar maximum
• Piston diameter ranges from 16 to 40 mm
• Rod diameter 10 to 25 mm
• Stroke ranges from 16 to 40 mm
• Push force 10.0 to 62.8 kN maximum
• M26 - M60 external thread

These double-acting cylinders allow a space saving installation into the fixture body and therefore a hose free oil supply. The double-wiper protects the piston and enables sealing with very little leakage. Sealing of the cylinders in the fit hole is made by two O-ring/support-ring combinations.

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.