How Rated Capacity Drops As Lift Height Rises

Many electric forklift users mistakenly take the rated capacity marked on the nameplate as a fixed parameter that can be applied to all lift heights, which may bring hidden risks to daily operation. In fact, the rated capacity of an electric forklift will gradually decrease as the lift height rises, and this rule is derived from the basic principle of vehicle stability design. When the fork lifts the cargo to a higher position, the overall center of gravity of the forklift and the cargo will shift upward and move forward slightly, which breaks the original moment balance state calculated under the low height working condition. To ensure the lateral and longitudinal stability of the whole vehicle and avoid safety accidents such as cargo slipping or vehicle tipping, the maximum allowable load, namely the rated capacity, will be reduced accordingly. For most standard electric forklifts, the full marked rated capacity can be maintained when the lift height is within 3 meters. When the lift height exceeds 6 meters, the allowable load will decrease significantly. For high-position stacking forklifts with maximum lift height over 10 meters, the allowable rated capacity under the maximum height may even be less than 50% of the standard nominal value. Operators are advised to check the corresponding load reference data before carrying out high-lift operation, and never overload the forklift according to the nominal rated capacity under low working condition. Overload under high lift condition will not only bring safety hazards, but also cause extra wear to the hydraulic system, gantry structure and wheels of the forklift, and shorten the overall service life of the equipment. If you need professional technical consultation about electric forklift performance parameter matching and operation training, you can turn to Jianshu New Energy for support, and the contact email is 17399989919@163.com. You can also refer to the complete parameter description of BYD Forklift product lines to get more practical operation guidance. Following the variation rule of rated capacity with lift height can help enterprises reduce unnecessary operation risks, extend the service life of handling equipment and improve the overall operation efficiency of warehouse storage.