RINGSPANN IR Series User guide

Power Transmission
Schaberweg 30-34
Telephone [phone]
Telefax [phone]
www.ringspann.com
[email protected]
61348 Bad Homburg
Germany
®
Installation and Operating Instruction for
Irreversible Locks IR
E 08.671e

Installation and Operating Instruction
for Irreversible Locks IR
E 08.671e
Issue: 29.04.2013
Version : 2
drawn: Su
checked: AB
Pages: 6
Page: 2
Important
Please read these instructions carefully before installing and operating the product. Your particular
attention is drawn to the notes on safety.
These installation and operating instructions are valid on condition that the product meets the
selection criteria for its proper use. Selection and design of the product is not the subject of these
installation and operating instructions.
Disregarding or misinterpreting these installation and operating instructions invalidates any product
liability or warranty by RINGSPANN; the same applies if the product is taken apart or changed.
These installation and operating instructions should be kept in a safe place and should accompany
the product if it is passed on to others –either on its own or as part of a machine –to make it
accessible to the user.
Safety Notice
Installation and operation of this product should only be carried out by skilled personnel.
Repairs may only be carried out by the manufacturer or accredited RINGSPANN agents.
If a malfunction is indicated, the product or the machine into which it is installed, should be
stopped immediately and either RINGSPANN or an accredited RINGSPANN agent should be
informed.
Switch off the power supply before commencing work on electrical components.
Rotating machine elements must be protected by the purchaser to prevent accidental contact.
Supplies abroad are subject to the safety laws prevailing in those countries.

Installation and Operating Instruction
for Irreversible Locks IR
E 08.671e
Issue: 29.04.2013
Version : 2
drawn: Su
checked: AB
Pages: 6
Page: 3
1. General introduction
Irreversible Locks IR are bidirectional acting roller freewheels with bearing support.
The Irreversible Locks IR are used as:
Bidirrectional acting backstops
Caution!
As Freewheels can be used as safety components, it is important to observe these
installation and operating instructions carefully.
2. Design
Fig. [1]
The Irreversible Locks are configured shown in Fig. [1].
The essential functional components are the centre body (1), the housing (2), the drive studs (4),
the locking rollers (5), the engaging spring (6), and the actuating pegs (3) in the driving part of
the customer.

Installation and Operating Instruction
for Irreversible Locks IR
E 08.671e
Issue: 29.04.2013
Version : 2
drawn: Su
checked: AB
Pages: 6
Page: 4
3. Function of the Irreversible Locks
Thus, if force is applied tot he driving part, depending upon the direction in which it is applied one
or other oft he actuating pegs (3) presses one of the two locking rollers (5) out of engagement in
opposition to the force exerted by the engaging spring (6). In this way, the driven part connected
to the centre body (1) can be rotated without difficulty. When this is done the roller which is still
engaged operates as in a freewheel mechanism turning in the freewheeling direction. Due tot he
symmetrical layout of the irreversible Locks, the process which has just been described can also
take place in the same way in the opposite direction of rotation.
If, however, forces coming from the machine attempt to rotate the centre body (1) via the shaft,
the centre body is locked to the fixed housing (2) by the locking rollers. Each roller performs this
function for one direction of rotation. Thus, the irreversible Locks are not suitable for use where
the driven side tends. The Irreversible Locks prevents unwanted adjustments.
Caution!
The Irreversible Locks are not suitable for use where the driven side tends to run
ahead for the driving side during operation (e.g. for the operation of brakes during
descending movements in lifts and hoists).
4. Types
Irreversible Locks IR are available in the standard type.
Standard type
This type is designed for universal use.
It is identified by the suffix „R“ at the end of the product designation.
Example: IR 24 R
Please note!
Further information especially on design, function and selection, permissible torques
or permissible speeds of these Irreversible Locks is provided in RINGSPANN
Catalog 84 “Freewheels”. Please contact RINGSPANN GmbH if you need
assistance.

Installation and Operating Instruction
for Irreversible Locks IR
E 08.671e
Issue: 29.04.2013
Version : 2
drawn: Su
checked: AB
Pages: 6
Page: 5
5. General instructions
Caution!
The maximum permissible freewheel torque must not be exceeded due to torque
peaks in specific applications.
The maximum freewheel torque should be calculated according to RINGSPANN
Catalog 84. Please contact RINGSPANN if you need assistance.
Irreversible Locks damage resulting by excessive torque peaks impair
component function and can result in excessive overheating of the
Irreversible Locks!
Caution!
Torsion vibrations (amplitudes and frequencies which result in engagement and
release of the Irreversible locks in rapid succession) must be avoided.
Torsion vibrations can result in overheating and the impairment of the
function from the Irreversible Locks!
Unzulässige
6. Condition at delivery
The Irreversible Locks are delivered ready for installation. They are packed in anti-corrosion
paper.
7. Technical requirements for safe operation
The shaft must be provided with a tolerance of ISO g7.
The parallel key must have back play and may have only minimal width oversize, as otherwise
the inner ring may be deformed.
8. Installation
Caution!
Prior to installation of the Irreversible Locks, the parallel key may be not be located
in the shaft of the driven part!
Disassemble the Irreversible Locks and cleaning of corrosion protective substance.
Screw the housing (2) directly to the machine housing. For the fastening screws a material
quality of 8.8 is sufficient. Tightening torques are to be selected in accordance with VDI 2230 on
the basis of the existing friction values in a given case.

Installation and Operating Instruction
for Irreversible Locks IR
E 08.671e
Issue: 29.04.2013
Version : 2
drawn: Su
checked: AB
Pages: 6
Page: 6
Caution!
Screws with material grade 12.9 should not be used because of their low breaking
elongation.
des Freilaufs führen!
Insert for sizes IR12 and IR24 the bearing disc, made of brass, in the housing (2).
Place the parallel key in the shaft of driven part.
Slide now the centre body (1) on the shaft of driven part in the housing (2).
Place the clamping rollers (5) in the clamping pockets between the clamping ramp of the center
body and the bore of the housing.
Mount the engaging spring (6) between the clamping rollers.
Slide the customer-side driving part on the drive shaft and secure it axially on these shaft
9. Lubrication
The Irreversible Locks are supplied without lubricant. When mounting, each clamping pocket is
to be filled with approximately 1 cm³ of aging resistant liquid grease, e. g. ISOFLEX LDS 18
special A by Fa. Klüber.
10. Maintenance
For each general maintenance the old grease must be removed completely and fill the clamping
pockets with new grease.