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SPECIAL MOUNTING NOTES FOR 25,000 lb Winches
The Stallion 25,000lb winch can achieve forces which test the limits of the mounting bolts
and winch foot construction. Care must be taken when mounting this winch to reduce the
opportunity for a mounting related failure. The winch is capable of winching itself to
catastrophic destruction if the below recommendations aren’t followed.
The winch achieves it maximum recovery rating (25,000lb) when the first wrap is winding
onto the drum. If you are planning on loading the winch to this limit, it is strongly suggested
the winch be mounted such that the winch foot and bolts be in compression when winching
with the mounting bolts in the horizontal plane.
Mounting your winch with the bolts in the horizontal plane with the bolt heads facing the
vehicle in front of you is the strongest mounting arrangement as it takes much of the
winching force off the mounting bolts and winch foot mounts. The rope/cable should enter
the drum on the lower side of the drum in keeping with the direction labels on the winch.
Ensure your mount is rated for the force that can be applied.
Mounting your winch with the bolts in the vertical plane and the bolt heads pointing to the
road is acceptable, however, note, you will be operating near the limits of the bolts and the
winch foot casting when fully loading the winch. Any unbalance in forces could exceed the
design limits of the winch mount and bolts. To limit the potential for a bolt shear failure, note
the following;
Think of the mounting plate as a knife wanting to cut through the bolts. A thicker plate
is better and for the 25,000lb winch a minimum 6mm (1/4”) plate should be used.
Using a thicker 8mm (5/16”) or 10mm (3/8”) plate significantly increases the shear
strength of the mounting bolts. Using a thicker plate only at the mounting holes
achieves the same improvement and may be a lower weight option if the mounting
plate is being fabricated especially for the winch. Never mount the winch to oversized
or slotted holes as this will increase the likelihood of a bolt shear failure.
See over
