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SKIDMORE & TORQUE WRENCH CALIBRATIONS

Hydraulic and manual torque wrench calibrations traceable back to NIST

SKIDMORE & TORQUE WRENCH CALIBRATIONS
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Skidmore and Torque Wrench Calibration for Heavy Jacking Equipment

Calibration of Skidmore testing equipment and torque wrenches is crucial when working with heavy jacking systems. It ensures the accuracy and reliability of fasteners, bolted connections, and hydraulic systems, which are critical in lifting and structural applications.

1. Skidmore Calibration

A Skidmore-Wilhelm testing device is used to verify bolt tension and torque relationships. It is commonly used to test high-strength fasteners, such as those used in structural and heavy lifting applications.

Calibration Process for Skidmore Testers

Inspection & Setup

The device is checked for wear, damage, and proper operation.
Load cells and hydraulic pressure systems are examined.
Zero-Load Verification

The tester is verified for a correct zero reading before applying force.
Incremental Load Testing

Test bolts are torqued to specific values, and the corresponding tension is measured.
Results are compared to certified calibration standards.
Adjustments & Certification

If deviations are found, adjustments are made to the device’s internal components.
A calibration certificate is issued to confirm compliance with industry standards.

Key Equipment Used in Skidmore Calibration

Calibrated Load Cells – Measure tension force in bolts.
Torque Sensors – Ensure correct torque application.
Data Acquisition Systems – Record and analyze applied loads.
Hydraulic Test Benches – Provide controlled loading conditions.

SKIDMORE CALIBORE

The Calibore™ bolt tension calibrator for all bolts using the following tools:

SKIDMORE-CALIBORE

The bolt tension calibrator for all bolts using the following tools:

Impact Wrench • Manual Torque Wrench • Nutrunner • Pneumatic Toque Wrench • Hydraulic Bolt Tensiomer • Hydraulic Torque Wrench • Missing Link • DTI Squirters & TC break-off-bolts.

Skidmore bolt testing is required in applications such as steel buildings, bridges and similar structures. Skidmore bolt testing is performed for two main purposes:

Preinstallation Verification (PIV) Testing, and
Rotational Capacity (RoCap) Testing

The Calibore™ bolt tension calibrator for all bolts using the following tools:

Snap–in” front plate and hex bushing.
Built in adjustable reaction bar.
Gauge reads in both pounds and kilo Newton’s.
Solid, heavy-duty gauge protector.
Solid milled clamp that secures at two points for beam mounting.
Drilled holes provided for base / table mounting.
Label identifying recommended minimum bolt tension.
Fitted, wheeled carrying case.
Light weight (basic unit weights 17 ½ lbs. compared to competitions 45 lbs.).
Available in 350 K and 1,000 K.

HYDRAULIC TORQUE WRENCH CALIBRATION

Multi-direction 360° x 180° high-flow aluminum hose swivel

2. Torque Wrench Calibration

Why Torque Wrench Calibration is Important

Torque wrenches are used to tighten bolts to specific torque values, ensuring even load distribution in jacking systems. If a torque wrench is not properly calibrated, bolts may be under- or over-tightened, leading to mechanical failures or unsafe conditions.

Calibration Process for Torque Wrenches

Pre-Calibration Inspection

The wrench is checked for wear, damaged components, and proper operation.
Reference Torque Application

The wrench is tested at multiple torque settings using a certified torque calibration machine or torque transducer.
Comparison with Standard Values

Measured torque values are compared against certified reference equipment.
Adjustment & Certification

If deviations exceed acceptable tolerances, the wrench is adjusted and re-tested.
A calibration certificate is issued.

Key Equipment Used in Torque Wrench Calibration

Torque Calibration Machines – Provide precise force application.
Certified Torque Transducers – Measure applied torque for accuracy verification.
Digital Readout Devices – Record and analyze torque values.

Conclusion

Both Skidmore testers and torque wrenches play a vital role in ensuring the integrity of bolted connections in heavy jacking applications. Regular calibration of these tools is essential for safety, compliance, and operational efficiency

Hydraulic torque wrenches are professional tools for industrial applications. These truly versatile tools utilize standard impact sockets, optional direct allen-key drives or interchangeable hexagon cassettes to provide controlled tightening of multiple sized fasteners per tool. Optional accessories further extend the application range of these products.

Let’s Talk Torquenomics
Using only one hose and high strength die spring, this tool operates as fast as double acting tools at half the cost!!!

TORQUE TOOLS…

MISSING LINK • SWIVEL HAMMER • UNI-BAR • Z46 • BACKHOLD • STUDMATE • NORWOLF

WE ARE THE BOLTING EXPERTS!

Hydraulic torque wrenches are indispensable in industrial settings for precise fastener tightening. Using standard sockets or hexagon cassettes, these tools ensure controlled torque, preventing over-tightening.

Equipped with a swivel head and locking collar for safety, they’re durable and efficient, with a fine-tooth ratchet preventing ‘locking on.’ Widely used in construction and manufacturing, these wrenches offer accurate, safe, and efficient torque application for diverse industrial connections.

SKIDMORE & TORQUE WRENCH CALIBRATIONS

SKIDMORE & TORQUE WRENCH CALIBRATIONS
RENTAL • SALES • SERVICE

Skidmore and Torque Wrench Calibration for Heavy Jacking Equipment