Harrington RH WIRE ROPE TROLLEY HOISTS

CAPACITY

• 2 – 20 Ton

STANDARDS

• NFPA 70 “National Electric Code”
• ASME B30.16, “Safety Standard – Overhead Hoists (Underhung)”
• ASME HST-4, “Performance Standard for Overhead Electric Wire Rope Hoists”

BODY

• Standard headroom configuration

ROPE SYSTEM

• Premium grade provides high resistance to fatigue and wear
• Spring-tensioned rope guide keeps the rope securely in the grooves on the drum

HOOK

• High strength forged steel
• Capable of swiveling 360 degrees under load
• Top and bottom hooks have heavy-duty hook latch
• Machined carbon steel bottom block sheaves

OPERATION

• Triple reduction helical gearing for smooth, quiet operation with minimum vibration
• Electro-Mechanical load limiter prevents lifting of over capacity loads
• External limit switches protect against hook overtravel

BRAKE

• Conical rotor brake virtually eliminates brake issues
• Fan cooled to ensure long life

MOTOR

• Hoist and trolley feature a heavy-duty fan cooled (TEFC) motor
• Class F insulation
• Includes thermal protection
• Finned cast aluminum housing for maximum durability

RUBBER BUMPERS

• Reduce mechanical impact against trolley stops and are required for trolley hoist installation on overhead bridge cranes

DUAL TREAD WHEELS WITH GEAR GUARDS

• Flat and tapered tread section is ideal for S or W beams
• Ensures smooth tracking on wide flange beams common in industry
• Gear guards protect gear ring and flange, as well as personnel

EXTENDED WHEELBASE DESIGN

• Larger wheelbase than competitive units offers more stable travel
• Provides better load distribution over the beam to reduce beam loading

DUAL-SIDE TROLLEY DRIVE

• Two driven wheels offer better traction for improved operator control
• Driven wheels on opposite sides of the trolley provide smoother operation with less racking and skewing

HEAVY-DUTY TROLLEY DRIVE

• Fan-cooled TEFC drive motor provides long, trouble-free service
• IP55-rated, suitable for outdoor service and adds extra protection for indoor applications
• Helical gear drives in oil bath provides cool, quiet and smooth operation
• Trolley motor design provides smooth acceleration

OPTIONS

• Pendant
• Pendant cord
• Power supply cord
• Trolley travel limit switch
• Block operated limit switch