Weight Capacity One of the most essential specifications to consider when using or purchasing a hydraulic scissor lift table is its weight capacity. Overloading the lifting table not only impairs the function and shortens the service life of the table, but worst of all is, it constitutes a safety risk to the operators as well as the surrounding personnel. From floors and loading docks, to vehicle maintenance, and other uses, you’re sure to find the lift table you need to operate most effectively.
Rated Load Capacity Explained
All hydraulic scissor lift tables are provided with a manufacturer’s rated load capacity, often in kilograms or pounds. This weight rating is the maximum weight the table can lift, support, and lower when the table is fully extended and the load is centered/focused. It’s worth noting the rated capacity applies under standard conditions—level ground, centered, evenly distributed load.
Actual safe lifting capacity can be much less if loads are focused toward one end, or if loads are not relatively evenly distributed. Always consult the manufacturer guidelines to find the safe operating recommendations specific to your application.
Department of Health and Human Services Factors contributing to capacity needs
Choosing the appropriate weight capacity isn’t simply a matter of being aware of the heaviest object you intend to hoist. This is a complex equation, with multiple variables:
- Load shape and distribution: The load might not be evenly distributed which could cause extra stress in one place on the lift table which may adversely affect the reliability and safety of the lift table.
- Frequency of usage: When lift table needs to be used regularly and with heavy load, it requires a higher-duty cycle as well. High-usage overloading can cause excessive wear and part failure.
- Height: As a hydraulic scissor lift table goes up, the scissors-style arms are responsible for more and more of the force that’s also acting on the scissor arms. The heavier the load required to be lifted for higher lifts, the lower the effective capacity at full extension.
With there being risks that could lead to breakdowns or dangerous situations, proper planning and load analysis might be able to avoid failures.
The Risk of Overloading
- Using a lift table over capacity creates numerous problems. These include:
- Failure of the mechanical structure or of the scissor arms
- Hydraulic system has been affected
- Lifting slowly or Unable to lift
- Brown, scratched, or marred components Increased wear of bearings, pins, and bushings.
Worse still, overloading can result in tipping or collapse without warning, causing injury and product damage. Operators need to be educated on weight loads and consider the condition of the machinery carefully.
Choosing the Right Lift Table
When buying or upgrading a hydraulic scissor lift table, be sure to choose one with a working capacity that is higher than the heaviest type of load you will usually carry. So if the lift will have many uses mismatching may be the most prudent way to go upward in weight.
You may also want to consider features such as the safety rails, overload protection systems and built-in locking systems if additional safety is important to you.
Conclusion
To operate any hydraulic scissor lift table safely, it is important to be familiar with, know and respect its load capacity. Applying the load distribution, lift height and frequency of use will help companies find the right table and not make an expensive mistake. Correct equipment choice and ongoing maintenance and operator training will provide years of service and operator safety.