As the core equipment for lifting operations, the selection error of electric hoist not only affects efficiency, but also may cause safety accidents. Many purchases are easily misled by "low prices" and "high parameters" when selecting, falling into an invisible trap. Today, we will dismantle the core pitfalls of selecting electric hoists and help you choose reliable products. ​
Firstly, do not sacrifice the core configuration at a low price. Poor quality electric hoists use non-standard motors and inferior steel wire ropes/chains to reduce costs - motor power is falsely labeled, heat dissipation is poor, and long-term operation can easily burn out; The steel wire rope lacks oil and rusts, the chain material does not meet the standard, and it is prone to breakage during load-bearing, posing a great safety hazard. Priority should be given to motor brand and steel wire rope/chain material certification for selection, and unqualified low-priced products should be rejected. ​
Secondly, the tonnage and span are blindly matched. Some users only look at the rated tonnage and ignore the lifting span and lifting height - for example, a 10 ton hoist with a large span will significantly reduce its actual load-bearing capacity; Raising the height beyond the design range may cause the lifting to stall. The selection should be based on actual working conditions, and the manufacturer should provide a load span curve chart, with a 15% -20% safety margin reserved. ​
Thirdly, neglecting the integrity of safety protection devices. High quality electric hoists must have overload limiters, phase failure protection, emergency braking and other devices, while inferior products may omit these key configurations. Once overload or circuit failure occurs, it is difficult to stop the machine in a timely manner, which can easily lead to accidents. When selecting, it is necessary to check whether the safety devices are complete and comply with national mandatory standards. ​
    Fourth, cutting corners in the motor and braking system. Poor quality motors use copper-clad aluminum coils, which have poor conductivity and short lifespan; The braking system uses inexpensive brake pads, which wear out quickly and pose a high risk of brake failure. When selecting, it is necessary to confirm the material of the motor coil and the brand of the braking system, and provide a motor testing report to avoid "passing off inferior as good". ​
Fifth, ignore the adaptability of working conditions. Special customized electric hoists are required for high temperature, humidity, explosion-proof and other special environments. Ordinary products are prone to short circuit and corrosion in extreme environments; Frequent start stop conditions require the selection of high-frequency durable models, otherwise the motor is prone to overheating. Before selecting, it is necessary to clarify the operating environment and start stop frequency, and reject the universal excuse of "universal". ​
Finally, identify the source factory and quality inspection certificate. Electric hoists produced by unqualified small factories have not undergone load testing, insulation testing, and other processes, resulting in messy internal circuits and non-standard component assembly. Priority should be given to selecting brands that can provide quality inspection reports and support factory inspections to ensure that each device undergoes strict testing and has guaranteed after-sales service. ​
The core of selecting electric hoists is "safety adaptation". To avoid the above misconceptions and select the right configuration based on working conditions, lifting operations can be both efficient and reassuring.