A-LOCThe removable, axialroll ring locking system

A-LOC – centre roll rings and exert a high axial tension force using a single tool.

A-LOC during tensioning

A-LOCAxial LOCking – Less wear thanks to a highly efficient method of mounting roll rings free of any tensile stress

Examples of applications: Rolling mills, wire drawing processes and anywhere where radial tension sensitive parts need to be mounted.

Tensioning element

Roller shaft

Pressure port

Slide ringsRoll ring

Centring sleeve

Axial tensioning element

Protective cap

A cross section of the damagecaused by a combination ofwear and radial forces just before a roll ring cracks.

cracked tungsten carbide roll ring

AdvantagesA-LOC offers the following advantages compared to conventional locking systems:

Roll rings have a longer tool life · Decreased regrinding depth · Reduced regrinding frequency · No cracks due to lack of extreme radial forces · Roll rings need no longer to be cracked due to excessive radial tension force · No structural changes needed for cost-intensive module parts when converting to A-LOC

Roll modules have a longer service life · Axial and radial bearings last longer · Contact surfaces around the roll ring assembly are not worn down · No secondary damage as the roll rings will no longer crack due to excessive radial tension

Less rejected rolling stock due to · offset grooves and extremely rough surfaces on the rolling stock Cost-intensive existing parts such as roll rings, roller shafts, sliding rings, bearings etc. can be used without changing · Damaged parts can, in many cases, be recycled

No need to carry large stock of cost-intensive parts such as roll rings, roller shafts, sliding rings, bearings and centering devices. In addition, it facilitates economic use of resources, cleaning agents etc.

Reduced risk of accidents and improved working conditions · as there is no need to remove roll rings by extensive force · by using new lighter tools

Comparison of the forces acting upon the roll ring. Depending on the rolling mill, the A-LOC system can pay for itself in just 6 months.

Quality AssuranceAll A-LOC are checked for material quality, dimensional accuracy, correct functioning and load-resistance. During order execution, they are subject to continuous quality assurance measures and are supplied together with detailed technical documentation.

ServicesA-LOC are, of course, ready for installation and use.

SCHAAF A-LOC are user-friendly, reliable, and manufactured in accordance with the highest level of technical know-how. Our highly-motivated staff would be pleased to train your personnel, in mounting and dismantling A-LOC in situ or at our works.

VersionsThe standard version of the SCHAAF A-LOC consists of the following components:

Centring unit made of tough, high-tensile steel, activated by austenite tensioning bolts

High-strength axial tensioning nut Tensioning element with centring function and axial

tensioning device with automatic piston return Protective cap made of high-tensile aluminium Hydraulic dismounting device with automatic

piston return and stroke limiting valve Mechanical dismounting device Drive shafts, completely new or rebuilt

”old” versions converted to the A-LOC system A-LOC hydraulic system control unit

Complete solution from SCHAAF The accessories for A-LOC such as high-pressure pumps, hydraulic hoses as well as connection couplings are aligned to the functions = 100 % system solution.

Accessories manufactured by SCHAAF EcoRolls, the cost-effective composite rolls Bolt tensioners Hydraulic nuts High-pressure generators:

electric, air-operated or manually operated High-pressure hydraulic hoses Couplings, nipples, adapters, distributor blocks

up to 4000 bar

SCHAAF GmbH & Co. KG

Bruesseler Allee 22

41812 Erkelenz - Germany

Fax: +49 - 24 31- 9 77 70-77

E-Mail: info@schaaf-gmbh.com

Internet: www.schaaf-gmbh.com

Telephone: +49 - 24 31 - 9 77 70-0

PG

27.a

_lo

c.e_

031

0_i

ndd

_onl

ine

· Err

ors

exc

epte

d.

Dat

a w

ill c

hang

e as

dev

elo

pm

ents

occ

ur.

Co

pyr

ight

as

per

sta

ndar

d IS

O 1

601

6.