~ up to 3 ton capacities for heavy-duty industrial applications ~ gear train lifetime lubricated with non-oxidizing grease ~ precision machined and hardened liftwheel with hardened chain guides for precise chain liftwheel......~ up to 3 ton capacities for heavy-duty industrial applications ~ gear train lifetime lubricated with non-oxidizing grease ~ precision machined and hardened liftwheel with hardened chain guides for precise chain liftwheel fit ~ gearing designed for exceptionally long life and quiet operation ~ h4 duty standard ~ rugged control station (nema 4) ~ hoist duty motor, standard protector overload device and standard screw type limit switches ~ made in u.s.a.