Electric Hoists / SEQ Electric Hoists
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SEQ Electric Hoist -1 Phase

Performance Meets Innovation

Our SEQ hoists are the industry's first dual speed via VFD, single phase electric chain hoists. The variable frequency drive furnishes smooth starts and stops, adjustable speeds, and unbeatable precision.  The added benefit of a no-load high speed function that automatically increases hoist speed up to 130 percent when the load is less than 30 percent of working load limit takes lifting to new heights.

 

 

Variable Frequency Drive (VFD)

All dual speed models come with a standard “under-the-cover” variable frequency drive – regardless of voltage. This device works by varying the power to the motor, which allows you to adjust both the high and low speeds. It also provides a soft-start/soft-stop operation to reduce shock loads, swing, and bounce – resulting in more precise load control and longevity of the hoist.

Compact Aluminum Body

Die-cast body is lightweight and offers low headroom – one of the best in the industry. Paint is electrostatically applied.

Unique Chain Guide

Provides quiet and smooth guiding of chain. Heavy cast iron construction for improved wear versus stamped steel design offered by many manufacturers.

Self-Adjusting Maintenance-Free Brake

Equipped with an electromagnetic pull rotor brake, the SEQ has no brake coil to fail or discs to replace, making it virtually maintenance free.

No-Load High Speed

When working with less than 30% of the full rated capacity, the SEQ can operate 1.3 times faster, optimizing your work efficiency and production time.

Extreme Duty, Single-Phase, Fan-Cooled Motor

Rated for an ASME H4 Classification, the motor has a 30/10 minute duty rating in a single phase, dual speed offering. The external motor fan functions to quickly eliminate resistor, motor, and brake heat.

EQ SEQ Chain Hoist

Harrington Hoists, Inc. explains the features and benefits of their EQ and SEQ Dual Speed (VFD) Electric Chain Hoists.

CAPACITY
  • 1/8 - 1 Ton
VOLTAGE
  • Reconnectible
  • 115-1-60
  • (220-230)-1-50/60
COMPLIANCE
  • UL 508, 508A, 1004
  • CSA C22.2 NO.33,14-13, 66
  • ANSI/NFPA 70, “National Electrical Code”
  • ANSI/ASME B30.16, “Safety Standard—Overhead Hoists (Underhung)”
  • ANSI/ASME HST—1M, “Performance Standard for Electric Chain Hoists”
CLASSIFICATION
  • ASME H4
  • ISO 1/8-1/2T M6; 1T M5
  • FEM 1/8-1/2T 3m; 1T 2m
BODY
  • Gaskets throughout the hoist provide for a IP55 rating
  • Die-cast aluminum
  • Completely sealed body for for both indoor and outdoor applications, including harsh environments
  • Low headroom
  • Paint is electrostatically applied
  • Plastic chain container standard
GEARS
  • Precision machined helical gears immersed in oil bath lubrication for quiet, smooth and cool operation
LOAD CHAIN
  • Ultra-strong high-performance and corrosion resistant nickel-plated
  • Grade 80 DIN chain
OPERATION
  • Pendant control
  • Under-the-cover VFD standard
HOOKS
  • Forged carbon steel
  • Open gradually without fracturing under excessive loads
  • Bottom hook swivels 360 degrees
  • Top and bottom hooks have heavy-duty hook latch
PUSH BUTTON PENDANT
  • Rated IP65
  • Standard control voltage is 24VDC
  • Strain relief wire is molded to pendant cord for added support and dependability
  • 2-button (momentary contacts) with emergency On/Off (maintained contacts)
  • E-stop is standard on all pendants
BRAKE
  • Extremely durable and reliable pull-rotor motor brake
  • Contains no brake coil to fail like conventional disc brakes
MOTOR
  • Totally enclosed fan-cooled (TEFC)
  • External motor fan quickly eliminates resistor, motor and brake heat
  • 30/10-minute duty rating, H4 classification, Class B insulation, cooling fins and external thermal motor protection
OPERATING CONDITIONS
  • Recommended for -4° to +104° F and humidity of 85% or less
OPTIONS
  • Longer lift or pendant lengths
  • Suspension bar for low headroom or enclosed track trolley applications
  • Longer lift canvas chain containers