Railcar Winch Pullers
 

Calbrandt, Inc.
 

Manufacturer's Representative: C.R. Majors

                                                Andress Engineering Associates, Inc.

                                                            P.O. Box 480; Conyers, Ga. 30012  
 

Email: aea@railspur.com
 

International Phone (770) 929-3094 USA

International Fax (770) 760-1104  USA

Phone From USA Only: (800) 437-4211

 

Hydraulic Winch Railcar Puller

Notice the Hydraulic Motor Mounted Directly On the Drum Shaft
 
The big advantage to hydraulically driven winch pullers over electric driven winch pullers is safety.  This consists of preventing over torque and providing for soft starting.
Over torque is prevented because the hydraulic pressure is strictly limited which in turn strictly limits the amount of torque on the drum and the amount of pull on the wire rope.  With electric motor drives the motor can stall at twice or more of the rated load for the application.  This can result in unsafe forces being put into the wire rope.  There are electronic over torque devices that can be installed on electrically driven winches but they are expensive and are generally not as reliable as the hydraulic pressure limiter.  If a wire rope breaks due to over torque it can swing wildly and cause severe injury or death to personnel and damage to equipment.
Another safety item is soft starting.  Many injuries have been caused by electrically driven railcar winch pullers because someone was standing on or next to the cab when it was laying on the ground and someone pushed the start button.  The cable goes from laying loose on the ground to full tight which is normally a foot or more in the air.  This can happen in less than one second.  The cable moves so fast that it can cause severe injury to anyone standing on or next to it when this happens.  With the hydraulic winch puller flow limiting devices can prevent the unit from building pressure too quickly. The slower building of pressure will provide a soft start.  It will add a few seconds to the tightening of the wire rope and this can make all the difference in the world to the chance of injury to personnel or damage to equipment.
When we considered how much safer the hydraulic driven winch is v. the electrically driven winch we decided to make the hydraulically driven winch as our standard product.  We will only quote electrically driven winches which have integral torque limiting and soft start devices.  Operating without these devices in good working order is considered a misuse and abuse of the equipment and will void all warranties.
The standard warranty of our winch pullers is one year for parts only and does not cover the cable.  Consumable items are not covered.  Only defects in materials or workmanship as delivered is covered.
 

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