Electric Chain Hoist


Feature

■ Motor Brakes

The advanced magnetic cone brake provides accurate and reliable stoppings, even in the event of a total power loss.  It’s as simple as motor off, brake on; motor on, brake off.  Holding brake can be manually released to lower the load in the event of power failure or malfunction without special tools.  Brake lining (asbestos-free) with a life of more than 1 million actuations.

■ Chain Guide

High quality design provides quiet and smooth guiding of the load chain.

■ Heavy Duty Motor

Squirrel cage parallel rotor motor designed specifically for hoist duty.  Cooling fins increase surface area for maximum heat radiation.  The IP55 totally enclosed construction can withstand demanding environments, the motor has class B insulation and aluminum frame.  Thermal protection is via 145℃ rated N.C. thermostatic switch embedded in an optional motor winding.

■ Sprocket

High performance, high precision, sprocket collocated with chain guide lets load chain motor run quietly and smoothly.

■ Load Chain

Grade 80 super alloy load chain is precisely calibrated and heat-treated for long life. Safety factor is more than 6:1.  Non-Acid processing galvanized plating load chain for resistance against corrosion is optional.

■ Load-Supporting Frame

The lug frame uses S50C medium carbon steel plate (2 ton 1 fall type and over capacity) or FCD45 nodular cast-iron (3 ton 3 falls type and lower capacity).

■ Gear Box

The gearbox is cast in one piece from aluminum alloy by gravity die-casting.

■ Weather Protected

Frame and control enclosures are IP55 weather protected from ingress of dust and water.

■ Overwinding Prevention

Newly designed device features a friction clutch immersed in an oil bath to protect the hoist from overwinding (USK series only)

■ Electromagnetic Contactor

Electromagnetic Contactors can be mechanically interlocked for added safety.

■ Quiet Gear Components

For quiet operation and long service life, hardened precision, durable alloy steel helical gears are submersed in an oil bath.

■ Push Button Station

Molded reinforced high insulation plastic housing is impact, weather corrosion, and fire resistant.  Push button switches are mechanically interlocked.  Strain relief cable is molded into the pendant cord. 48 V Low-voltage control as standard, 24 volt as an option.  6 or 8 point IP65 pendant as an option.  EMS button as an option.

■ High Durability Chain Containers

THAC provides processed canvas chain containers, which have outstanding durability. Steel containers for outstanding lifting as an option.  

■ Mechanical Brake with friction clutch. THAC’s mechanical brake combined with a friction clutch is standard for USK series. The dual safety device can protect human beings & property.

■ Upper/Lower Limit Switch

The limit switch prevents overwinding which stops the hoist in case of overlifting or overlowering. They are standard for USS and USLK series.