Forged and heat-treated top and bottom 20Cr alloy steel hooks with safety factor 1:4, which will be transformed slowly if overload.
Rolled-edge hand wheel cover provides smooth operation of the hand chain when pulled sideways.
20CrMnTi gears with high frequency carburization and 45-55HRC.C.
Rolled-edge hand wheel cover provides smooth operation of the hand chain when pulled sideways.
Medium frequency quenching heat treatment, low wear, anti-corrosion, selected lifting chain, test load is durable and safe
Forged and heat treated load hooks with safety latch. / Double pawl brake system, enhanced the use security and the reliability. / Grade 80/100 load chain option. / Sealed needle bearing, low handle force and more efficient. / Heat treated split load double reduction alloy gears.