Torque Limiters & Couplings0 pages

Cross & Morse Torque Limiters
Cross & Morse Torque Limiters are low cost protection devices that limit torque
in a drive system by slipping when a preset value is exceeded, in order to:Te l : + 4 4 1 2 1 3 6 0 0 1 5 5

Prevent machine and drive damage.
Eliminate costly machine downtime.

Fax: +44 121 325 1079

The Torque Limiter is a protective device that limits
torque transmitted in a drive system by slipping when
a preset value is exceeded as a result of shock load,
overload or machine jam. It automatically re-engages,
when the overload is removed, no setting being
required, Torque is transmitted by spring loaded
friction faces, the value being preset by adjustment of
the spring force by simple setting of the adjustment
nuts and bolts. The Torque Limiter is suitable to use
with sprockets, gears, pulleys or a flange plate as the
centre member clamped between the friction facings.
The Torque Limiter is not a new product with Cross &
Morse. In 1949 Morse introduced the first spring
loaded, friction type protective device which was
developed to today’s line of products consisting of
7 sizes, the models 200M to 700M being the most
popular units. To further extend the capabilities of our
products a new metric series of clutches, consisting of 6
sizes from M30 to M280 has been added, to cater for
higher torque applications, and areas where space is
limited. As originator of the Torque Limiter, Morse
gained vast experience in the design and application of
these units as trouble free and long lasting protective
devices. Many thousand units have been fitted to
conveyors, mechanical handling equipment and
agricultural machines.

Morse Torque Limiters incorporate design features for long life and reliability.
Correct Spring Selection and Ratings

Email: sales@crossmorse.com

Torque Limiter capacities are directly proportional to
the spring force applied to the friction surfaces and it
is a simple matter to increase capacity by increasing
spring force - but not without a sacrifice. The higher
the unit load or pressure (psi) on the friction
surfaces, the quicker the friction facings will
deteriorate as they slip against the pressure plates and
centre member. Morse ratings are realistic and are
consistent with optimum spring loads and face
pressures that permit longer slip time, maintain
re-engagement at pre-set torque, and provide
long-lasting protection.
The spring is designed so that its force varies little over
a wide deflection range at the rated capacity of the
torque limiter. This assures load re-engagement near
the pre-set torque level as the friction facing wears.
It is characteristic of a disc spring that it is more
unstable and erratic in the lower end of its load vs.
deflection curve; Morse therefore established
minimum torque ratings consistent with spring
characteristics.

Cross & Morse Torque Limiters offer you the following Benefits:
• Simple Design
• Minimum Maintenance
• Economical
• Easy Adjustment • Corrosion Resistant
• Compact
• Wide Torque Range • Infinite Torque Adjustment Settings • Dependable

• Durable
• Low Cost

Conclusion

The incorporation of an inexpensive Cross & Morse Torque Limiter improves machine design, safeguards
production, and minimises the downtime so ensuring increased productivity and profits.
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