M-LOCKS ML6740 Technical Manual
Mechanical Combination Lock
M-LOCKS BV
Tel: +31 (0)314 376 876
Vlijtstraat 40
ver. 1.2 2017 12 11
Fax: +31 (0)314 376 878
NL-7005 BN Doetinchem
1
www.m-locks.com
Technical Manual
Mounting Instructions
ML6740
The VdS recognition of this lock is based on this
mounting instruction. Read carefully.
The force applied to the lock bolt should not exceed 1 KN. If higher force is applied, please consult
with the testing institute (i.e. UL, VdS). Only use supplied screws to mount the lock. Fix the lock
handtied.
The lock has to be fitted exclusively on steel secure storage. The mounting base also must be made of
steel . Installation on other materials only after consultation M - LOCKS or VdS .
It is recommended to prevent access to unauthorized persons to safety-relevant parts of the high-
security lock when the safe is open . Par example by a with a screws fixed interior cover.
The lock housing must be protected against destructive attacks from outside with suitable protective
materials .
CHARACTERISTICS
The ML 6740 is a manipulation proof 3-wheel combination lock with new features making it very easy
to mount. VdS Kl.2, EN1300 Class B, ECB-S, CNPP, IMP, DNV.
The lock has the standard foot print (66,7x41mm) and can be mounted in all four mounting-directions.
(HR, HL, VU, VD)
Measurements: 85mm x 61mm, x 29mm. Lock bolt: 25mm x 8mm with two M4 holes in the bolt head.
Bolt Travel: 8mm.
The lock has been tested with 10,000 opening cycles with a bolt load of 2.5 N (mounting position Bolt
right). All other mounting positions as well as higher loads (for example due to bolt work or blocking
element) must be tested by the safe manufacturer with at least 10,000 opening cycles and a
corresponding load.
The lock needs no spline key. It works with a square 6x6mm shaft as the spindle.
Two optional locking bars can be inserted to make a 3-way locking system.
Mechanical Dials
This mechanical lock compatible with the following M-LOCKS dials:
For more information, please read the technical description and mounting instruction of the dial and
ring assembly.
Due to the square shaft the lock is not compatible with dials that have a round, threaded spindle.
CS-serie
MD-serie
ST-serie
KL1060
KL1560