Norbar HT-92/25 Manual Torque Multipliers 400-4000NM, Output Square: 1", Input Square: 1/2"

The Norbar HandTorque HT-92/25 AWUR, Part No. 180215, is a compact manual torque multiplier designed to deliver 400–4,000 N·m with torque multiplication accuracy better than ±4%. Featuring a 1/2" square drive input, 1" square drive output and an anti-wind-up ratchet (AWUR), it combines high torque capacity with a lightweight 5.4 kg gearbox. Supplied with a calibration certificate, aluminium reaction arm and carry case, it is suitable for demanding industrial bolting applications without requiring an external power source. Genuine Norbar torque tools are supplied by General Tech Services LLC, UAE. Request a quote in under a minute by calling +971 6 5436933.

Part No.: 180215
Contact Number: +971 6 5436933

The Norbar HandTorque HT-92/25 AWUR belongs to the HandTorque Compact Series and uses multi-stage epicyclic gearing to convert the input torque from a standard torque wrench into a much higher output. Its nominal 25:1 multiplication ratio is stated on the individual unit's calibration certificate, which should be used when calculating the required input torque.

With a listed working range of 400–4,000 N·m, this multiplier is designed for heavy-duty bolting tasks involving large flanges, structural connections and industrial fasteners. Its 1/2" square drive input allows it to work with a compatible torque wrench, while the 1" square drive output accommodates the appropriate socket for the fastener.

The integrated anti-wind-up ratchet helps control stored energy in the gear train, reducing the risk of the input wrench springing back when the applied force is released. Its compact design supports work in restricted spaces, while manual operation makes it suitable for offshore facilities, remote substations and industrial locations where powered tools may be impractical.

The unit features a corrosion-resistant finish and can be fitted with an electronic transducer. It weighs 5.4 kg, with the aluminium reaction arm weighing an additional 1.35 kg. The supplied calibration certificate identifies the exact multiplication ratio for the individual unit.

For a higher torque capacity, consider the Norbar HandTorque HT-4 (4500 N·m), subject to your application requirements and compatible tooling.

Key Benefits

• Delivers up to 4,000 N·m of output torque without an external power source.

• Provides torque multiplication accuracy better than ±4%.

• Features a nominal 25:1 multiplication ratio documented on the individual unit's calibration certificate.

• Includes an anti-wind-up ratchet to help improve operator safety and repositioning.

• Combines a 1/2" square drive input with a 1" square drive output.

• Compact 5.4 kg gearbox supports demanding bolting tasks in restricted workspaces.

• Includes an aluminium reaction arm and carry case.

• Offers a corrosion-resistant finish and compatibility with an electronic transducer.

For genuine Norbar torque tools, pricing and availability in the UAE, contact General Tech Services LLC at +971 6 5436933.

Who This Product Is Best For

• Industrial maintenance teams working with fasteners requiring up to 4,000 N·m.

• Oil and gas, offshore and petrochemical facilities where powered tools may be restricted.

• Technicians handling large flanges and structural bolting in confined work areas.

• Workshops that already have a compatible 1/2" drive torque wrench and need higher output torque.

• Field service teams requiring a portable manual torque multiplier for remote locations.

How to Specify & Install It

1. Confirm that the required output torque falls within the listed 400–4,000 N·m range.

2. Check the individual unit's calibration certificate for its exact torque multiplication ratio.

3. Calculate the approximate input torque by dividing the target output torque by the certified ratio, accounting for the specified accuracy and manufacturer's instructions.

4. Connect a compatible 1/2" square drive torque wrench securely to the multiplier input.

5. Fit the correct socket to the 1" square drive output and position the aluminium reaction arm against a suitable, stable reaction point according to the manufacturer's instructions.

6. Apply force smoothly and operate the anti-wind-up ratchet in accordance with the manufacturer's procedure.

7. Inspect the multiplier, reaction arm, drive components and socket before use. Follow the manufacturer's maintenance and calibration guidance for the torque wrench and multiplier.

Frequently Asked Questions

1. What is the maximum output torque of the Norbar HT-92/25 AWUR?

It delivers up to 4,000 N·m, with a listed working range of 400–4,000 N·m.

2. What is the torque multiplication ratio?

The nominal ratio is 25:1. Use the exact ratio stated on the individual unit's calibration certificate when calculating the required input torque.

3. How accurate is the Norbar HandTorque HT-92/25 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 prevent the input wrench from springing back due to stored energy in the gear train when the applied force is released.

5. What are the input and output drive sizes?

The multiplier has a 1/2" square drive input and a 1" square drive output.

6. What is included with the product?

It is supplied with a calibration certificate stating the unit's exact ratio, an aluminium reaction arm and a carry case.

7. Can the HT-92/25 AWUR be used with an electronic transducer?

Yes. The model can be fitted with an electronic transducer, subject to compatibility with the intended setup.

8. How does it compare with the Norbar HT-4 (4500 N·m)?

The HT-92/25 AWUR has a listed capacity of 4,000 N·m and a nominal 25:1 ratio. The HT-4 offers up to 4,500 N·m. Select the model based on the required output torque, available workspace and compatible tooling.

9. How can I get pricing and availability in the UAE?

Contact General Tech Services LLC for current pricing, stock availability and lead-time information.

+971 6 5436933