DOUBLE GIRDER CRANES
At G.W. Becker, Inc. our double girder cranes are designed and manufactured to either CMAA Specification #70 or AIST Technical Report #6. In addition, they meet current ANSI, NEC, and OSHA specifications.
Double girder overhead cranes are most frequently applied in capacities over 10 tons and spans greater than 60 ft.
Ordinary girder type construction for light duty, short span bridges are standard rolled steel sections. Alternatively, welded plate box girders are available, but standard on heavier duty, higher capacity and longer spans.
The typical advantages of double girder overhead cranes are:
- Higher hook lift, since the hook can be pulled up between the main girders
- Extremely rigid box girder construction and durable trolley design are well suited for heavy service applications
- They are also highly suitable where the crane needs to be fitted with walkways, cabs, magnet cable reels or other special equipment.
The typical disadvantages of double girder overhead cranes are:
- Higher initial cost
- Heavier dead weight
- Reduced hook approaches
Based upon your lifting requirement and budget, we can offer either economical packaged equipment or custom engineered overhead lifting equipment. We are experts in applying the correct engineered equipment for your company’s specific application.
Completed Double Girder Crane Projects
110/30 TON DC HOT METAL LADLE CRANE (#22030)
Industry:
Railroad / Forging
Application:
Hot metal ladle crane teeming aisle
CMAA Classification:
Class F Service
Product Manufacturer:
G.W. Becker, Inc.
Project Description:
G.W. Becker, Inc. manufactured a new 110/30 ton electric overhead traveling hot metal ladle crane for a steel producer in Pennsylvania. This new crane is a replacement for an antiquated unit in the customer’s teeming aisle.
40/15 TON DC ANNEALING CRANE (#20275)
Industry:
Steel Rolling Mill
Application:
Loading coils into vertical annealing furnaces
CMAA Classification:
Class E Service
Product Manufacturer:
G.W. Becker, Inc.
Project Description:
G.W. Becker, Inc. commissioned a new 40/15 ton electric overhead traveling crane for a steel rolling mill in Western Pennsylvania. This new crane replaces an existing EOT crane used in the customer’s annealing department.
35 TON OVERHEAD CRANE (#20332)
Industry:
Steel Tube Manufacturer
Application:
Master coil handling in the receiving aisle
CMAA Classification:
Class E Service
Product Manufacturer:
G.W. Becker, Inc.
Project Description:
G.W. Becker, Inc. commissioned a new 35 ton electric overhead traveling crane for a steel tube manufacturer in Indiana. This 3-motion severe service EOT crane replaced an antiquated unit and was designed to be installed on an existing runway system of 53’ span and 20’ of lift.