faces on finished or polished plates,
secure written recommendations
from RENFROE.
S T R U C T U R A L M E M B E R S —
FABRICATED SECTIONS: Unless
otherwise specified, clamps described
as capable of handling structural mem-
bers and fabricated sections are limited
to hot-rolled steel whose Brinell Hard-
ness does not exceed 300.
WARN-
ING: For applications not covered
by the above information, secure
written recommendations from
RENFROE.
RATED CAPACITY: The rated capac-
ity of a RENFROE product is based on
the product being in “new or as new”
condition and represents the maximum
load the product is to be subjected to
when utilized in the manner described
in this manual. Wear, misuse, abuse
and other factors relating to usage may
reduce the rated capacity. Shock load-
ing and the factors listed must be taken
into consideration when selecting a
RENFROE product for a given applica-
tion.
PLATE THICKNESS: The minimum
and maximum plate thickness a clamp
specified for handling plates is capable
of lifting.
WARNING: Never use a
clamp for lifting a plate where the
plate thickness is less than or greater
than the minimum and maximum
stenciled on the clamp.
JAW OPENING: The minimum and
maximum thickness of a member of
clamp specified as having a JAW
OPENING is capable of handling.
WARNING: Never use a clamp on a
member whose thickness is less than
or greater than the range of jaw
opening stenciled on the clamp.
OPERATING TEMPERATURES:
Unless specified under the Application
Section of the individual model, the
approved operating temperature of
RENFROE clamps is from zero degrees
Fahrenheit (-18 Celsius) to a maximum
of 200 degrees Fahrenheit (+93 degrees
Celsius). The minimum and maximum
temperatures apply to both ambient and
the material being handled by the
clamp.
WARNING: Secure written
authorization from RENFROE be-
fore using clamps in temperatures
other than shown.
“HOT LIFTS”: The Model R and S
clamps are available in modifications
that are capable of making lifts where
the temperatures of the member being
lifted exceeds 200 degrees Fahrenheit
(+93 degrees Celsius). Depending on
conditions a lift may exceed 1000 de-
grees Fahrenheit (538 degrees Celsius).
The exact application and temperatures
of the plates to be handled are critical in
selecting the proper model.
WARN-
ING: Secure written instructions
from RENFROE for all hot lift appli-
cations.
LOCKING CLAMPS: Locking clamps
are divided into the categories listed
below. With the exception of the
“Locking Wedge” and “Locking
Screw” type the purpose of the locks
are to facilitate the attaching and re-
moving of the clamp from the member
being handled.
“LOCK CLOSED” - an overcenter
spring loaded mechanism in which the
spring exerts a force on the gripping
cam when the lock handle is moved to
the “Lock Closed” position. When the
Summary of Contents for DWS
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