Mountz MMTB User manual

MMTB (Miniature Break-Over Wrench) Operating Instructions
Rev 2.2 (4/11/2017)
Corporate Headquarters: 1080 North 11th Street, San Jose, CA 95112 Phone: [phone] Fax: [phone]
www.mountztorque.com
MMTB “Break-Over” Wrenches
These small production wrenches ‘break-over’ once reaching preset torque setting. Compact and well balanced, these
wrenches have a fixed head attached to it and are ideally suited for low torque settings or applications with tight space
restrictions.
Calibrating Torque Wrenches
To calibrate torque wrenches either use a torque tester or torque sensor within the range of the torque wrench. For break-
over torque wrenches calibrate torque in “Peak” mode with a digital torque tester or torque sensor Make sure to apply the
torque slowly and smoothly at the “Load Point Line” near end of the handle.
1. Select a torque tester or torque sensor that covers the torque range of the MMTB wrench. Connect wrench to the torque
analyzer or transducer using the appropriate adapters as needed (not supplied).
2. Apply torque clockwise slowly until wrench ‘breaks-over’ and note reading.
3. Adjust wrench to required torque setting as described below.
4. Test and repeat adjustment as necessary to obtain desired value.
5. Recalibrate torque wrench at prescribed intervals.
Adjusting Torque Setting
1. Remove plastic end cap from the handle.
2. Insert 3/16 hex key into adjusting screw and turn clockwise to increase
torque and counter clockwise to decrease torque. Verify the torque setting
using a torque tester or torque sensor. Do not adjust torque setting above
or below the recommended torque ranges of the wrench. Place end cap
back on.
Applying Torque
1. Toward the end of the wrench is the “Load Point Line.” Grab handle at that “Load Point” end to apply torque. (If you
grab handle closer toward head, then you will apply more torque than what the wrench is set for. The wrench is a length
dependent tool).
2. Tighten nut or bolt by applying a steady even pull. Wrench should be kept at 90 degrees to axis of bolt during tightening.
When pre-set torque is reached, the wrench will ‘break.’ Stop pulling once 45º break angle is achieved.
2. Reset the wrench for the next application.
3. With its unique design, it’s impossible to over tighten beyond the preset load.
Adjusting
Screw
Handle Set Screw
90º
45º
Load Point Line
Ref. Item # 500295

MMTB (Miniature Break-Over Wrench) Operating Instructions
Rev 2.2 (4/11/2017)
Corporate Headquarters: 1080 North 11th Street, San Jose, CA 95112 Phone: [phone] Fax: [phone]
www.mountztorque.com
Ref. Item # 500295
Mountz Calibration & Repair Services
Mountz Inc. features an experienced calibration and repair staff. Our trained technicians can calibrate and repair most any
tool. Mountz provides rapid service with quality that you can trust as we offer three state-of-the-art calibration lab and repair
facilities that can calibrate up to 20,000 lbf.ft.
Since 1965, Mountz Inc. has proven its in-depth knowledge of torque and torque solutions by consistently developing, pro-
ducing, marketing and servicing highly sophisticated, cutting-edge tools. We perform calibrations in accordance with
ANSI/NCSL-Z540. Mountz is dedicated solely to the manufacturing, marketing and servicing of high quality torque tools.
Tool Service & Repair Capability
- Torque Wrench Calibration: Click Wrench, Dial Torque Wrench, Beam Wrench, Cam-Over & Break-Over Wrench
- Torque Screwdrivers: Dial, Micrometer, Preset & Adjustable
- Torque Analyzers/Sensors: All brands
- Electric Screwdrivers: All brands
- Air Tools: All brands
Impact Wrenches, Drills, Pulse Tools, Grinders, Percussive Tools, Air Screwdrivers, Nutrunners, DC Controlled Nutrunners
- Torque Multipliers: All brands
Mountz Torque Testers and Calibration Equipment
Torque tools go out of calibration with use. Calibrating a torque tool is a
fine-tuning process of bringing the tool back within its tolerance. Torque
testers can also be used for quick tools tests on the line or in the lab to
determine whether torque tools are holding a given setting.
A regular torque tool calibration and re-calibration guarantees the operator
repeatable accuracy and adherence to international standards. Torque
testing also ensures torque equipment is operating to peak performance
and can highlight potential tooling problems before they arise perhaps due
to tool wear or broken components.
Controlling torque is essential for companies to ensure their product's
quality, safety and reliability isn't compromised. The failure of a three-cent
fastener that isn’t properly tightened can lead to catastrophic or latent fail-
ures. Fasteners that are insufficiently torqued can vibrate loose and exces-
sive torque can strip threaded fasteners. Using a quality torque tool has
become increasingly important for many companies to ensure that proper
torque is being applied and maintains gauge requirements associated with
the ISO 9001 Quality Standard. Look for the Mountz hexagon logo - it's a
stamp for quality tools, service and knowledge in the field of torque con-
trol.
Mountz Service Locations
Eastern Service Center
19051 Underwood Rd.
Foley, AL 36535
Phone: [phone]
Fax: [phone]
Western Service Center
1080 N.11th Street
San Jose, CA 95112
Phone: [phone]
Fax: [phone]
www.mountztorque.com
[email protected]
Download a “Service Form” and include a copy
when you send the tools in to be serviced.
Looking for fasteners?
www.mrmetric.com