Catalogues - sitema-safety-brake-general-information

Catalogue SITEMA Safety Brake general Information

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SiTE MA

Technical Information SITEMA - Safety brakes

Pneumatic actuation

English translation of German original

Expertise in Safet

TI-B10-EN-03/2008

Technical Information TI-B10

Safety Brakes type KSP

0 High holding force by self-intensifying clamping

0 Pneumatic actuation

0 Secure against overloading

Contents

1 Purpose....................................................................... 1

2 Function........................................................................ 1

3 Control.......................................................................... 2

4 Choosing the right size............................................... 3

5 Rod requirements........................................................ 3

6 Operating conditions................................................... 3

7 Own hazard analysis.................................................. 3

8 Overall dokumentation and CE mark........................3

9 Regular functional checks.......................................... 3

10 Maintenance................................................................. 3

A detailed description of the control, assembly and operational test of the SITEMA Safety Brakes can be found in the Operating Manual BA-B10" .

2Function

Fig. 1: Structure, clamping released

As shown in Fig. 1, the vice system consists of a conical clamping sleeve (1) with an outer cone moving within a clamping ring (2). This whole clamping system is movable inside the housing (3) against the force of the disk springs (4). In released condition, the annular piston (5) keeps the clamping sleeve pushed against the set of disc springs (6) by pneumatic pressure, so that the shaft can move freely in both directions.

Static holding of the load

1Purpose

The KSP Safety Brake is designed and built to hold raised loads on a piston rod or on a separate clamping rod. The following purposes are possible and permitted:

Static holding

Static holding of a weight against gravity on a round rod and securing load to prevent it falling in one direction. The size of the KSP Safety Brake must be selected in such a way that the static forces do not exceed the admissible load (nominal load M) of the KSP Safety Brake as given in the Technical Data Sheet TI-B11"

Emergency brakes

Emergency brakes for a mass moving downwards in the specified direction. In this direction the brake force is high (higher than the nominal load) but limited to ensure well-defined energy dissipation.

The national and international regulations regarding safety as far as applicable to the particular case must be observed.

The KSP Safety Brake is typically used as a clamping mechanism or emergency brake in the following applications:

• Vertical drives of suppliers of loaders

• Vertical or diagonal line tool axes

Fig. 2: Clamped, maximum load equals nominal load At zero pressure the clamping sleeve (1) is pushed into the cone of the housing by a set of disc springs (6), whereby an initial friction contact between rod and clamping sleeve is achieved. If a load is now acting on the rod, the clamping process becomes self-intensifying.

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SITEMA GmbH & Co.KG . Im Mittelfeld 10 . D-76135 Karlsruhe . Phone: +49 (0)721 98661-0 . Fax: -11 . www.sitema.com