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A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
Page 105 of 124
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Specifi cations
Materials: The elastomer used in Dynafl ex LCR Series
Couplings is high-quality natural rubber, which meets
LORD specifi cations (available upon request) and
exceeds SAE standards. Natural rubber is used because
of its excellent physical properties such as tensile
strength, tear and abrasion resistance, fatigue resistance
and low temperature characteristics. Other elastomers
are available to meet special applications needs. The
elastomer-to-metal bonds are even stronger than the
elastomers.
Dynafl ex LCR Series Couplings listed on the following
pages have aluminum alloy inserts. Many other
insert confi gurations are possible to meet attachment
requirements.
Environmental: Ring-type couplings will perform satis-
factorily when exposed to the normal fl uid, temperature
and other environmental conditions found in drive-
line systems. Special oil-resistant elastomers can be
provided where total or partial oil immersion is necessary.
For operation in ambient temperatures exceeding 170°F
(77°C), consult LORD Engineering.
Misalignment: Misalignment capability applies for
speeds up to 3500 rpm. Operation up to 7000 rpm is
permitted with reduced misalignment (consult LORD
Engineering).
Note: For speeds above 4000 rpm, shielding is required
and/or balancing of assembly may be required.
Installation: Normal installation involves simple through
bolt attachment to fl anges. For fl ywheel attachment appli-
cations, metal inserts can be tapped/counter-bored to
permit easy installation.
Remote Driven Units: Multiple U-joint shafts (especially
longer shafts) and the speed at which the shaft rotates
(especially higher rpm’s) can create complex stability
problems. To assure satisfactory coupling performance,
all design layouts for remote mounted driven units should
be reviewed by LORD Engineering. LORD analytical
capability is only one part of the engineering service
available on all coupling applications.
LCR ring-type couplings can be selected based on
horsepower or maximum torque requirements. The data
listed on the next page provides the necessary informa-
tion to select a coupling and design it into your system.
New equipment designs and retrofi ts involving recipro-
cating engine drives and unusual driveline arrangements
should be analyzed to avoid potential vibration and
misalignment problems. Contact LORD Engineering for
assistance.