Principle of Uhing easylock®

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Uhing easylock®

Fast, safe, reliable:

  • shortest possible change-over times
  • also suitable for static applications
  • modular construction ensures simple adaptation to the task at hand
  • no tools required
  • single-handed operation
  • high clamping forces on a plain shaft
  • also suitable for use with driven shafts
  • simple transmission of braking moments to the roll or spool: safe emergency stops
  • compact, symmetrical design
  • maintenance-free
  • resistant against vibration

The surface hardness of the shaft must be = or > 55 HRC.
Diametral tolerance: h6-h8
From variants ELII-25 or ELII-1" onwards, it may be necessary to use clamping threads that are dependent on the direction of rotation where heavy vibrations are present!

Uhing easylock® product video

Description of operation


- fast-action clamping system for rolls, spools and static applicationsuhing-easylock-principle.jpg

Functional description

Uhing easylock® is fitted with a clamping ring which, in response to axial or tensioning forces, tilts on the shaft with which it engages, thus creating an increasing friction contact. The greater the tensioning force the greater is the clamping effect of the ring.


As the roll or spool is held firmly between the fixed pintle and the clamping pintle, braking moments can be transmitted from the shaft to the roll or spool. The machine can thus be quickly topped if a malfunction occurs.

Clamping pintle
from EL III-10 to ELIII-40 

Clamping pintle from EL III-10 to ELIII-30 and ELIII-40

Handling EL III


Turn the tensioning wheel forwards by approx. 2 to 3 rotations.
Press locking ring and tensioning wheel apart before sliding onto
shaft (see sketch). Push the clamping pintle up against the roll.
Set the desired tension by turning the tensioning wheel.
Note: The holding force is higher than the achievable tension.


Cancle the clamping pressure by turning the tensioning wheel
in the opposite direction.
Press locking ring and tensioning wheel
apart and pull the clamping pintle off the shaft.
* If the clamping pintle cannot be released immediately,
turn the tensioning wheel backwards
while simultaneously pushing against the roll. The
tensioning wheel and the locking ring must have
been separated beforehand.

Please note:
The surface hardness required for the shaft is = or > 55 HRC,
tolerance in diameter h6-h8
surface roughness Ra 0,2 - 0,4 µm
No surface treatment acceptable!
After long working periods it can be necessary to remove a coating on the shaft to ensure the
clamping force.


Ask for our offer for Uhing easylock® here

Download easylock® catalogue

The current download-catalogue can differ from the printed version.


Uhing® Press releases:

Fast-action clamping systems for plain shafts – that's how you do it

Changing spools is made easy with fast-action clamping systems for plain shafts. But how do you do this? Pictures tell more than words. For this reason, Uhing published two short on-line videos showing the Easylock fast action clamping system, and its variant, the U-Clip clamping element....[read more]

Uhing at Wire 2012 in Düsseldorf

Tensioning and clamping systems – enhanced product range

Uhing showcases sizes ELIII 10 and 40 of the Easylock® fast-action clamping system that allows high torques to be transferred to coils and foil rolls on plain shafts. The customer can now choose from lighter and more ergonomic clamping modules in ten different sizes in the 10 to 40 mm diameter range....[read more]


Joachim Uhing GmbH & Co. KG
Konrad-Zuse-Ring 20
24220 Flintbek, Germany

Tel. / Phone +49 (0) 4347 906-0
Fax Vertrieb +49 (0) 4347 906-40
Fax Einkauf +49 (0) 4347 906-31

E-mail: sales(at)uhing.com
Internet: www.uhing.com