The Bucher PM-3554-0131 2-Way Bale Spear HPU is a 12V double-acting hydraulic power unit with a 3-quart steel reservoir — the same pump that ships inside our gooseneck and bolt-in bale spears. The steel tank handles ranch life better than poly, and the 2-way circuit drives the spear cylinder both up and down.
Why does the bale spear use a steel reservoir instead of poly?
Ranch trucks live outside year-round and get loaded with everything from hay strings to fence wire. Steel survives cab corner impacts and stray tools that would crack a poly tank. The trade-off is weight — a few pounds heavier — but the durability is worth it on a working spear.
- 12V DC, 2-Way (Power Up / Power Down) — double-acting
- 3-quart steel reservoir — built for ranch-truck duty
- 2,500 PSI operational pressure
- 1.5 GPM max oil flow
- 6 SAE hose connections
- Operating temp: -20°F to 130°F
- Recommended fluid: ATF (Automatic Transmission Fluid)
- Same HPU shipped inside the Pierce Gooseneck and Bolt-in Truck Bed Bale Spears
- Bucher PM-3554-0131 — made in USA, 100% tested
For the bale spears this HPU powers, see the Gooseneck Truck Bed Bale Spear or Bolt-in Truck Bed Bale Spear. For a poly-reservoir 2-way HPU, see the Bucher 2-Way HPU (3 qt Poly).
