Ramsey H-7 H-200 Worm Gear Winch (1 Viewer)

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Cruiser_Nerd

That 25 Guy.
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Thought I would post up a little info on these since there wasn't anything here that I saw. This is the basic Ramsey worm gear winch head whether hydraulic , electric or PTO driven. It is very similar to the Toyota internals with a steel and bronze worm drive at 38:1. I just did a quick reseal / motor replacement on a hydraulic version for use as a center mount winch on my compact tractor. This particular one is an HX-7 and has been in my scrap pile for at least 15 years, it came off the boom of an electric utility truck and was used for pulling conductors, The upfitter seems to have welded on drum extenders so the utility could run 50' of 5/8"" rope (drum itself is good for 60' of 5/16" or 100' of 1/4"). The H-7 is rated 3000# and does not have a clutch dog to disengage the drum for freewheeling, the H-200 is rated 8,000# and has a clutch to freewheel.

Seals (same as the H-200 8000#):
Worm Shaft 3/4" Ramsey 486009 National 6835S ($6)
Drum Shaft 1 1/4" Ramsey 486017 National 7412S ($7)

Hydraulic Motor: SAE A Mount, 3/4" diameter, 1" shaft depth.

Motor Coupling: 3/4" round keyed x 1/2" square.

I needed to change the motor as the original was rated 750 rpm, 400 in-lb at 15 gpm, 800 psi, and was locked up solid from sitting in water. Turns out 3/4" shafts are no longer popular new production so I had to stalk fleabay and surplus sites until I found a NOS Cross motor with a 3/4" shaft and the correct rotor size ($150). I had to shorten the shaft about an 1" and rekey, but it got me in the same rpm and torque range with the 5 gpm 1800 psi my little tractor cranks out.


Sorry no "disassembled" pics, I'll take a couple "after" pics if I manage to wander through my shop anytime soon:
IMG_0859.JPG
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