Norbar HT 7/25 AWUR Manual Torque Multipliers 600-6000NM, Output Square: 1 1/2", Input Square: 1/2"
The Norbar HandTorque HT-7/25 AWUR is a manual torque multiplier designed to deliver up to 6,000 N·m, with a 1/2" square input, 1-1/2" square output and torque multiplication accuracy better than ±4%. Its nominal 25:1 multiplication ratio supports high-output bolting, while the anti-wind-up ratchet (AWUR) helps control stored energy in the gear train and reduces the risk of input-wrench kickback. Supplied by General Tech Services LLC, UAE, it operates without an external power source.
For pricing and availability, call +971 6 5436933.
Part No. 16065
The Norbar HT-7/25 AWUR uses a multi-stage epicyclic gearbox to convert input torque from a suitable torque wrench into a much higher output. With a listed working range of 600–6,000 N·m, it is suitable for demanding industrial fastening, maintenance and heavy bolting applications.
The multiplier has a nominal torque multiplication ratio of 25:1. Norbar specifies the true torque multiplication ratio rather than the velocity ratio, so confirm the exact mean torque ratio from the manufacturer's documentation before calculating input settings for critical joints.
The HT-7/25 AWUR accepts a 1/2" square-drive torque wrench and provides a 1-1/2" square output. Since it is manually operated, it requires no electricity, compressed air or battery, making it useful at offshore facilities, remote substations, confined vessels and field service locations.
Its anti-wind-up ratchet helps retain stored energy in the gear train when the input wrench is released. This reduces the risk of sudden kickback and makes repositioning easier between tightening operations. For applications that do not require this feature, consider the standard Norbar HT-7/25, Part No. 16018.
Key Benefits
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High torque output: Delivers up to 6,000 N·m for demanding bolting applications.
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Anti-wind-up ratchet: Helps control stored gear-train energy and reduce input-wrench kickback.
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Torque multiplication accuracy: Better than ±4%.
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25:1 nominal ratio: Enables a suitable torque wrench to generate substantially higher output torque.
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Manual operation: Requires no electricity, battery or compressed air.
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Portable design: Suitable for workshops, field maintenance and remote industrial locations.
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Standard alternative available: The HT-7/25 without AWUR is an option when an anti-wind-up ratchet is not needed.
For pricing and availability, contact General Tech Services LLC at +971 6 5436933.
Who This Product Is Best For
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Maintenance teams handling fasteners requiring up to 6,000 N·m.
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Offshore, oil and gas, and petrochemical facilities where powered tools may be restricted.
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Industrial technicians who need a portable, manual high-torque solution.
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Workshops with a suitable 1/2" torque wrench that require greater output torque.
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Operators who prefer additional control when releasing and repositioning the input wrench.
How to Use It
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Identify the required output torque and verify the multiplier's exact mean torque ratio using the manufacturer's documentation.
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Calculate the required input torque using the verified ratio.
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Set a suitable 1/2" square-drive torque wrench to the calculated input value.
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Attach the torque wrench to the multiplier's input and fit the appropriate socket to the 1-1/2" output.
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Position the reaction arm against a suitable, secure reaction point according to the manufacturer's instructions.
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Apply force smoothly and confirm that the tightening cycle has completed as intended.
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Release and reposition the tool safely before continuing with another fastener.
Always follow the manufacturer's operating instructions and the applicable bolting procedure. Do not assume the nominal 25:1 ratio is the exact torque ratio when tightening critical joints.
Frequently Asked Questions
1. What is the maximum output torque of the Norbar HT-7/25 AWUR?
It delivers up to 6,000 N·m, with a listed working range of 600–6,000 N·m.
2. What is the torque multiplication ratio?
The nominal ratio is 25:1. Confirm the exact mean torque ratio in the manufacturer's documentation before calculating input torque for critical applications.
3. How accurate is the HT-7/25 AWUR?
Its torque multiplication accuracy is specified as better than ±4%.
4. What does AWUR mean?
AWUR stands for anti-wind-up ratchet. It helps retain stored energy in the gear train when the input wrench is released, reducing the risk of sudden kickback.
5. What input and output drive sizes does it use?
It has a 1/2" square input and a 1-1/2" square output.
6. Does the HT-7/25 AWUR require a power supply?
No. It is manually operated and requires no electricity, compressed air or battery.
7. What is the difference between the HT-7/25 AWUR and the standard HT-7/25?
The HT-7/25 AWUR (Part No. 16065) includes an anti-wind-up ratchet. The standard HT-7/25 (Part No. 16018) does not include this feature.
8. How can I get a price in the UAE?
Contact General Tech Services LLC for current pricing, availability and lead time by calling +971 6 5436933.
Request a quote for the Norbar HandTorque HT-7/25 AWUR, Part No. 16065, from General Tech Services LLC, UAE. Call +971 6 5436933.
