Mach III Clutch T6H1G-STL, T6H1H-STL, T6H2H-STL User Manual
© Mach III Clutch, Inc. All Rights Reserved
CLICK on product numbers above
to obtain the product detail sheet
which includes dimensional data
helpful during installation.
Installation & Maintenance Manual
MECHANICAL FRICTION TORQUE LIMITERS
WITH FLEXIBLE COUPLING
Catalog Products:
T3H2H-STL
T4H2H-STL
T5H2H-STL
T6H1G-STL, T6H1H-STL, T6H2H-STL
And non-catalog variations of this clutch design.
Mach III Technical Support
Toll Free: 866-291-0849
International: 001-859-291-0849
Email: engineering@machiii.com
www.machiii.com
Detail sheets and 3D models are available on the Mach III website:
http://www.machiii.com/Products/Torque-Limiter/Flexible-Mechanical-Torque-Limiter-
Couplings.asp
Please contact Mach III to obtain assembly and parts list drawings.
This product includes rotating equipment and should be guarded according to
OSHA requirements and other Federal, State and local regulations. It is the
responsibility of the user to provide necessary guarding.
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D
B
L
C
Reference Diagram:
Product#
MAX BORE
WITH
SQUARE KEY
B C D
L
T3H2H-STL
0.875
1.75
2.79
4.00
6.27
T4H2H-STL
1.125
2.06
3.50
5.13
7.44
T5H2H-STL
1.375
2.06
3.75
5.69
7.70
T6H1G-STL
2
2.37
4.25
7.34
9.91
I. Torque Setting
Mach III torque limiters are typically shipped to the customer with the torque value they have
specified. (Note: All torque settings are +/- 10%.) If a torque limiter requires setting or resetting in the field, please refer to section VII of this document.
II. Installation
A. SHAFT PREPARATION & MOUNTING
Mach III Clutch products are bored to fit a precision plug gauge for the specified bore size
and should slide fit the mating shaft. Make certain that the shaft is free of burrs or nicks. It
may be necessary to file or sand the shaft to assure a slide fit. Never hammer the torque
limiter onto the shaft. Hammering on the torque limiter may cause evident damage or subtle
injury that will shorten the wear life of the unit, and will void the warranty.
(1) Apply the anti-seize (E-Z Break®) lubricant from the packet provided, or
equivalent, to the shaft.
(2) Insert key (customer supplied) onto the shaft.
(3) Slide torque limiter over key on the shaft, align the sprocket or pulley.
(4) Tighten set screws to secure the torque limiter to the shaft.
B. FINAL INSPECTION & TESTING
After a short run, check set screws and alignment.
III. Operation:
This is a manually adjusted torque limiter. Torque is proportional to the amount of spring
compression.
Special Note Regarding Friction Disc Contamination:
The friction material used in this product will absorb oil, water, chemicals and other
contaminants. Depending on the type of contamination, torque limiter may either seize up
entirely or lose torque capacity. If friction discs become contaminated, they should be
replaced. See repair kit ordering information below.
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