15 Ton Double Girder Crane (#35357)

Double Girder Crane

Industry:
Metals Processing

Location:
West Virginia

Duty Cycle:
CMAA Class C

15 Ton Top Running Single Girder Bridge Crane System
15 Ton Top Running Single Girder Bridge Crane System
15 Ton Top Running Single Girder Bridge Crane System

Project Description:

This crane is part of a 12-crane order from a long-time customer, continuing a trusted partnership built on reliable performance and service.

One (1) new 15-ton capacity, top-running, double girder bridge crane designed for indoor service in a 60°F to 120°F ambient temperature range. Built to CMAA Class ‘C’ moderate service standards, this crane provides reliable performance, precise control, and enhanced accessibility with full-length walkways and service platforms.

The system spans 33′-0″ and offers a 20′-0″ lift height, incorporating advanced drive technology, radio remote operation with pendant backup, and robust mechanical and electrical components engineered for long-term durability.

Application Highlights:
This double girder system utilizes variable frequency control on the bridge and trolley and flux vector control on the hoist for exceptional speed regulation and load handling precision. Safety and visibility are elevated through motion-activated warnings, LED lighting, and red LED drop zone indicators, ensuring operator awareness in active work zones.

Technical Specifications:

  • Capacity: 15 tons (30,000 lbs.)
  • Span: 33′
  • Lift Height: 20′
  • CMAA Class: ‘C’
  • Voltage: 460V, 3 Phase, 60 Hz
  • Service: Indoors, 60°F – 120°F

Mechanical Features:

  • Bridge: 150 FPM, variable frequency control, AC disc brakes
  • Trolley: 80 FPM, variable frequency control, DC disc brakes
  • Hoist: 22 FPM full load / 33 FPM no load, Flux Vector Control,  AC Thruster Shoe Brakes
  • Reeving: 2-part double reeved, IWRC, EIPS wire rope
  • End Trucks: Fabricated from heavy-wall structural tube for durability and stability
  • Hook Block: Motorized rotation for powered hook positioning
  • Access: Full-length footwalk and service platform

Electrical & Safety Features:

  • Main crane disconnect switch with lockable circuit breaker
  • Unitized controls in NEMA 12 air-conditioned enclosure mounted on the footwalk
  • A-B PowerFlex™ open-loop variable frequency control for bridge and trolley
  • A-B PowerFlex™ closed-loop flux vector control for hoist with encoder feedback
  • Remote keypads on control enclosure doors
  • Magnetic mainline contactor and branch circuit protection with breakers
  • Brake contactors and fused control transformer
  • Heavy-duty festoon or energy track conductor system
  • Upper/lower and block-operated limit switches
  • Operator-controlled and motion-activated audible warnings for bridge and trolley
  • LED status lights and red LED drop zone lights
  • LED crane lighting mounted to footwalk, accessible for maintenance

Installation & Service:

  • Perform full installation, including runway rail, end stops, and runway conductor bar
  • Tie into facility power for safe and functional crane operation
  • Install bridge and trolley hoist onto runway and make all structural, mechanical, and electrical connections
  • Conduct start-up, functional testing, and performance evaluation
  • Perform load testing at 125% of rated capacity
  • Provide certified inspection report and commissioning documentation upon completion

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