Balances or scales should always be checked with reference weights that you can rely on and trust. Our accredited mass laboratories clean, calibrate and adjust your weights, then document the results in calibration certificates with details of conventional mass correction, uncertainty and traceability information according to ISO/IEC 17025.
Crane Test Weights / Heavy-Capacity Test Weights
Safe Handling through Smart Test Weight Engineering
Crane test weights or heavy-capacity test weights are cast-iron or stainless-steel weights for scales with maximum capacities of several tons. They enable simple crane attachment for safe lifting and convenient testing. Choose from cylindrical, rectangular, or unique stackable designs and OIML F1, F2 or M1 classes depending on your need.
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How to Select the Correct Test Weight and Weight Class
The selection of test weights depends on the degree of accuracy needed to satisfy your specific process tolerance. Our free GWP® Recommendation service specifies the correct test weights and weight class to use to check the performance of your weighing device. Read more
Weight-Handling Accessories
Ergonomic tweezers and weight forks as well as clean-room gloves and cleaning cloths meet the highest requirements of all industries and ensure professional weight handling. Read more
Weight Calibration Service
Accredited calibration laboratories around the world clean, calibrate and adjust weights and then document the results in a calibration certificate. With our global network of accredited mass calibration laboratories, you can be sure of trustworthy calibration services and benefit from short weight-recalibration times. Read more
Verifying and Maintaining Accuracy Over Time
GWP® Verification assesses if the measured performance of your balance or scale satisfies your specific process and quality requirements. It documents the measurement range in which you can operate your equipment to achieve accurate and reproducible results. If a device does not achieve target performance, GWP® Verification recommends immediate measures to recover its accuracy. Read more
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Calibrating, Passion at Work
Our unmatched global network of 14 calibration laboratories across Europe, the Americas and Asia guarantee fast and cost-effective mass calibration. Our metrology staff are passionate about their calibration work, to ensure you receive first class service as well as continuously improved results.
Using State-of-the-Art Robotic Mass Comparators
The combination of robotic technology and world-class mass comparators delivers proven reliability and outstanding measurement performance.
Scope up to 5 t
Scopes range from OIML E to M classes and ASTM classes. For heavy-duty weights, services cover all steps from re-painting to calibration, even for weights up to 5 t.
Professional Weight Cleaning
Weights up to 50 kg undergo treatment in a total of six separate customized baths. Each weight is cleaned and stabilized in a fully automated process prior to calibration to ensure uniform surface conditions.
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Professional Installation - Get it right from the start
FAQ
What are crane test weights used for?
Crane test weights are used for routine testing and calibration of a crane scale or hoist scale.
What industries use crane test weights?
Any industry that utilizes cranes or other heavy-capacity equipment can utilize these weights for calibration of scales up to several tons.
What are the types of crane test weights?
METTLER TOLEDO is one of your options for crane test weight suppliers, and we offer cylindrical, rectangular, or uniquely designed stackable crane test weights.
The cylindrical design features an eyebolt in the center for easy handling by crane and is best for manufacturers who do not need to built up different mass combinations. These crane test weights are available in sizes from 100 - 2000 kg and classes F1/F2.
Our rectangular weights have a low center of gravity due to the shape which allows for easier building up of different mass combinations. These are available in sizes from 1 - 50 kg and classes M1/M2/M3.
Lastly, the cast-iron stackable weighs are available for OIML M1, and they feature a standardized design for easy lifting and smooth, weather-proof construction to reject dust and dirt. The two-component coating provides a smooth surface without cracks or sharp edges.