1.Meets all pertinent world standards2.Hardened steel rollers supporting the load sheaves run smoother and last longer than bearings3.Spur gear efficiency reduces operator effort. Double pawl and double guide rollers enhance performance,Website:http://www.chinachain-hoist.com, safety and reliability.4.Load chain is alloy steel grade 80 according to ISO 30775.Drop forged hooks that are designed to bend slowly to warn of overloads6.Every chain block is operationally tested to 150% of the rated capacity and issued an individual test certificate with unique serial number.7.Safety factor: 4 times of the rated capacityOptional Features:Overload ProtectionCaged roller bearings on load sprocketZinc plated load chainThrust bearings in bottom hook assemblyModelChain Block SLH-CRated Capacityt0.511.52351020Standard Liftm33333333Proof Loadkn/t7.35/0.7514.70/1.522.05/2.2529.4/344.1/4.573.5/7.5147/15294/30Pull to Rated Loadn/kg221/22.5304/31343/35457/46.6390/40420/43392/40392X2/40X2No.of Falls11112248Load ChainMM6X186X188X248X248X2410X3010x3010x30Hand Chainmm5X25X17Amm123140158158158185185195Bmm125147183183183214.5388635DimensionsCmm2803063684445206167001000Dmm36414242566285110Kmm2834393947516581Net Weightkg8.51116.517243967193Gross Weightkg8.811.517.5182540.574205Extra Wt. per mkg1.71.72.32.33.75.39.719.5