Precision instruments C2FR600H User Manual

Split Beam Type Torque Wrench
User Manual
Accurate within 4% of the setting from 20% of full scale to full scale
Specifications
Drive Stock No. Range Torque Increments Length
Flex ratchet models
3/8" C2FR600H* 100-600 lb. in. 10 lb. in. 17-5/8" 1 lb
3/8" C2FR100F* 20-l00 lb. ft. 2 lb. ft. 17-5/8" 1 Ib
1/2" C3FR250F* 40-250 lb. ft. 5 lb. ft. 22-1/8" 3 lbs
Metric reading
3/8" C2FR14M* 2.2-14 kg•m 0.2 kg•m 17-5/8" 1 lb
1/2" C3FR34M* 5-34 kg•m 1 kg•m 22-1/8" 3 lbs
Newton meter reading
3/8" C2FR68N* 14-68 N•m 2 N•m 17-5/8" 1 lb
3/8" C2FR130N* 25-135 N•m 5 N•m 17-5/8" 1 lb
1/2" C3FR350N* 60-350 N•m 5 N•m 22-1/8" 3 lbs
Fixed ratchet models
3/8" C2R100F* 20-100 lb. ft. 2 lb. ft. 17-5/8" 1 lb
3/8" C2R100FB* ** 16-100 lb. ft. 2 lb. ft. 17-1/8" 1 lb
1/2" C3R250F* 40-250 lb. ft. 5 lb. ft. 22-1/8" 3 lbs
1/2" C3R250FB* ** 40-250 lb. ft. 5 lb. ft. 22-1/8" 3 lbs
Fixed head models
1/2" C3F250F 50-250 lb. ft. 5 lb. ft. 18-1/2" 2 lbs 11 oz
Metric reading
1/2" C3F34M 7-34 kg•m 1 kg•m 18-1/2" 2 lbs 11 oz
* Non-Reversible Ratchet ** Black Oxide Finish
Safety warnings and cautions
CAUTION: Torque Wrenches
Overtorquing can cause breakage. Do not exceed rated
torque.
Wear safety goggles. (Users and bystanders)
Wrench can break while breaking fasteners loose. Do not use a
torque wrench to break fasteners loose. Using force against flex
stops on flex head torque wrenches can cause head breakage.
Do not force head of flex head torque wrenches against stops.
A torque wrench that is out of calibration can cause part or tool
breakage.
Calibrate periodically to maintain accuracy. Broken tools and parts
can cause injury
CAUTION: Torque Wrenches
A wrench that is slipping can cause accidents.
On detachable wrenches, make sure the spring-loaded locking pins
that secure sections of the wrench are fully engaged in their locking
pin holes.
Make sure that the socket is properly seated on the nut or bolt.
Always pull (do not push) on the wrench handle and adjust your
stance accordingly.
* Slipping wrench can cause injury
WARNING: Ratchets
Ratchet mechanism may slip or break if dirty. Mismatched or
partially worn parts can cause ratchet to slip or break.
Do not immerse sealed ratchet in fluids.
Do not replace worn parts individually, use entire contents of the
service kit.
Ratchets that slip or break can cause injury.
Introduction
CAUTION: Do not use a torque wrench to break tight fasteners
loose. This can damage the tool and result in inaccurate set-
tings.
Precision Instruments Split-beam series torque wrenches are
precision measurement tools, designed to torque in the clock-
wise direction and guaranteed accurate within 4% of the set-
ting from 20% of full scale to full scale.
An innovative "split beam" torque measuring mechanism pro-
vides consistent accuracy throughout the torque setting range.
Weight Because no coil spring is used, there is no need to "work-in" a
Split-beam series torque wrench before using it the first time
8 oz during a work period. Nor is it necessary to adjust to the lowest
torque setting after use.
8 oz
In use, the wrench clicks and provides a few degrees of free
6 oz
movement when the desired torque is reached. When pres-
sure on the wrench is completely released, the wrench auto-
8 oz
matically resets for the next application.
6 oz
• Setting torque on adjustable wrenches is fast and easy be-
cause there is no spring tension on the set knob.
8 oz
• Torque setting is lockable on adjustable wrenches for repeti-
8 oz
tive applications.
6 oz
• Hand-hold position on pre-set wrenches is less critical than
with other click-type torque wrenches.
• The wrench length is designed to provide the leverage re-
8 oz
quired for maximum torque applications. The length also
8 oz
provides the needed reach for those-hard-to-get-at places.
6 oz
• Adjustable models have a convenient conversion scale lo-
6 oz
cated just above the scale window.
• The torque wrenches are chrome plated for appearance and
easy cleanup, and knurled handles help to provide a slip
resistant grip.
IN1201-PI
Instructions
Setting the torque wrench
For adjustable models with set knob:
Pull back on the lock lever to unlock the set knob. With the
set knob turned to the lowest value, turn the knob clockwise
to the desired value indicated at the set mark, located at the
top center of the scale window. If the value is exceeded,
back off and approach the proper setting from the low side.
Close the lock lever to lock the set knob at the torque set-
ting.
Torquing fasteners
Apply torque to fasteners by pulling the wrench smoothly.
When the torque setting is reached, a click will be heard as
the wrench releases. When you completely release the
pressure, the wrench automatically resets for the next
torque application.
Calibration
Periodic calibration is necessary with normal use. This
helps assure accurate readings and properly applied torque.
For additional information, check with your Precision Instru-
ments representative.
Ratchet maintenance
Ratchet service kits are available for maintaining the
wrenches at optimum operating efficiency. Check with your
Precision Instruments representative for the proper service
kit.
Split-Beam Series torque wrenches are designed to measure torque in the clockwise direction only.
Non-reversing Ratchet
(3/8" sq.dr. )
Fixed Head (F)
Flex Ratchet (FR)
or
Fixed Ratchet (R)
Non-reversing Ratchet
(1/2" sq.dr. )
Printed in U.S.A.
Torque wrench head styles
Split-beam series torque wrenches are manufactured in
three different head styles: flex ratchet (FR-models), fixed
ratchet (R-models) and fixed head (F-models). Preset mod-
els (CP) are available in a fixed ratchet and fixed head style.
Flex ratchet models provide a smooth ratcheting action for
efficiency and reduced operator fatigue. They flex 15° up
and down for additional knuckle clearance and the ability to
work around obstructions.
Fixed ratchet models have the same ratcheting action as
the flex ratchet head torque wrenches. They differ in the pin
that secures the ratchet head to the torque body. The pin on
fixed ratchet models eliminates up and down movement and
secures the head rigidly in line with the torque body.
Fixed head torque wrenches do not have flex or ratcheting
features. The square drive is fixed. This model is ideal for
many assembly line operations.
If Your Torque Wrench Needs Repair
1. Send it to an authorized Precision Instruments Service
Center, or give it to your Precision Sales representative. Do
not attempt to repair it yourself.
2. If the warranty is no longer in effect, your Precision
Instruments Customer Service Representative will contact
you with repair charges for your approval before being
repaired.
3. A series of testers are available from Precision Sales
for checking the accuracy of your Torque Wrench. See
your Precision Sales representative for more information.
NOTE:
These specifications were in effect at the time of publication. Specifications may
change. Consult your Precision Instruments Representative for current specifications
Scale Window
Knurled Handle
Conversion Scale
Lock Lever
Set Mark
Locked Position
Set Knob
.