Hollow piston cylinder, short version

single acting, hydraulic clamping and spring unclamping
max. clamping force of 60 up to 104 kN
max. operating pressure 400 barHollow-piston cylinders 3.2130, single acting

Manual positioning of the element on the die clamping edge.
Clamping by the application of hydraulic pressure to the piston and unclamping by spring force. 
By means of the T-bolt the die is clamped against the clamping surface of the press ram or bed.
Applications

on press beds and rams

on machines and equipments for clamping and locking

when the available space is limited

at environmental temperature up to 120° C

Special features

optimum adaptation to the clamping surface by spherical disk

T-bolt, secured against loosening

ideal force transmission

convenient and compact design with gripping surface

clamping force from 60 kN up to 104 kN

large clamping stroke

no interfering edges when inserting the dies

easy retrofit

piston hardened and ground

easy installation

fully resilient stroke limitation

Versions
Hollow-piston cylinders with spherical disk for the adaptation to the clamping surface with adjusted and secured T-bolt (alternatively: without or with attached T-bolt)
Hollow-piston cylinders - ”L” design, without spherical disk for the adaptation to the clamping surface. T-bolt attached

Hollow-piston cylinders 3.2130, hydraulic clamping

Hollow-piston cylinders 3.2130 - Variants

Hollow-piston cylinder with adjusting screw for customized and flexible adjustment

This version can be flexibly adjusted for different clamping edge heights. Adjustment is quick and easy using a knurled nut with an easy-to-read scale. The tie rod is adjusted to the correct clamping dimension by turning the knurled nut.
With this version, there is no need to remove the tie rod or re-pin it.

 

Hollow piston cylinder with socket pin for up to three clamping edge heights

This version with flexible clamping dimensions has two or three different adjustment options for different clamping edge heights. Adjustment is made by screwing in the tie rod to the plug-in hole or dimension 1, 2, or 3.
It is secured manually with a dowel pin.

Hollow piston cylinder with lock nut

Freely adjustable and flexible adaptation to suit varying heights of clamping edges of the dies by quick and easy adjustment of the tie rod by means of a lock nut. The tie rod is inserted through the hollow-piston cylinder and adjusted to the the correct dimension by means of the lock nut.
In this version, the cylinder has a through hole instead of a thread. Technical design, clamping forces and dimensions are as shown on catalogue sheet 3.2130 for the standard design.

Version with a total stroke of 20 mm

Optimum adaptation to varying heights of the clamping edges of dies by an increased total stroke of 20 mm (higher total stroke on request).
Technical design, clamping forces and dimensions are as indicated on data sheet 3.2130 for the standard design.

Application example 1

Hollow-piston cylinders 3.2130
Use of hollow-piston cylinders in the press ram.

Application example 2

Hollow-piston cylinders 3.2130
Use of 32 hollow-piston cylinders in a press.
Reduction of set-up times by 30 %.

Application example 3

Hollow-piston cylinders 3.2130
Design "L"

Hollow piston cylinder, short version67 mm lenght, 6 mm strokeSingle acting with spring returnhydraulic clamping, spring unclampingwithout spherical diskT-bolt, detached*as per catalogue sheet WZ 3.2130