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BHT Standard bolt tensioners

Hydraulic bolt tensioners for bolts from M20 to M130 & from 3/4 “to 5”.

Gravity return, end stroke indicator, guided piston. Maximum reliability and extra lifetime

Special hydraulic bolt tensioners

Blackiron designs and manufactures special custom tensioners for all needs, suitable for bolts up to 7″ and more.

Serie BI-HP-2275

BMT Mechanical nuts

Blackiron mechanical nuts are versatile and resistant and following the highest manufacturing standards. They allow to tension the bolts without the use of pressurized hydraulic oil. By tightening the jackbolts at a predefined force it will be possible to apply a residual load to the bolt itself. Available up to 6100 kN nom. preload, can be designed in special material upon request.

- 4-speed full metal gearbox

- Battery-powered torque wrenches available for torques from 100 - 7,000 Nm

- Available for 10,000 Nm on request

- Brushless PowerDrive motor with 30% higher efficiency

- Lithium-ion battery with SafetyCell Technology

- The motor and electronics are completely protected against dust

- High speeds for precise and fast bolting

- Electronic torque setting

- Optical and acoustic signal when a defined battery charge is reached

- Quick charger ensures the battery is fully charged in less than 30 minutes

- Adjustment via the finely graded pressure reducing valve of the maintenance unit enables an accuracy of +/- 5% for the same screwdriving application

- Pneumatic torque wrenches available in the torque range from 40 to 15,000 Nm

- 360° rotatable pistol grip allows convenient positioning of the control unit

- Easily accessible right-left operation switching

- The 2-speed gearbox allows up to 44 torque settings to be adjusted

- Vibration-free and low-noise (high degree of work ergonomics)

- Due to the continuous overpressure of the drive motor, screwing in heavily polluted environments predestined

- No external air cooling supply required

- 2-speed gearbox right/left

- Electric Torque wrenches available from 150 to 12,000 Nm of torque

- 200 torque settings

- TTorque cut-off system at target torque with an accuracy of +/- 3.5% for the same joint

- Available in 230 and 110 volts

- Perfect for bolting under tight conditions

- The control unit can be positioned as required thanks to the 360° freely rotatable drive motor

- With the help of the JUWEL load release, the drive motor turns in the opposite direction of rotation for a short moment when the screw connection is complete. This enables the socket to be easily released.

- Support made of high-strength alloy

- Digital cordless power torque wrench with display and programming function

- Data can be transferred quickly and easily via Wi-Fi, Bluetooth or USB

- Available in straight and angled versions

- Screw according to a specific torque, angle of rotation or combine torque and angle of rotation

- Available in a torque range from 30 to 5,000 Nm

- Brushless DC motor (no wear due to carbon brushes)

- A variety of screwdriving configurations can be programmed via tablet, computer, mobile phone or directly on the device itself

- User-friendly display - simply set the torque or rotation angle and get started

- Precise measurement using two strain gauges

- Up to 1200 bolting data can be saved according to the "first in first out" principle

- Configuration settings can be password-protected​