6-20″ Primus Pipe Bending Machine (HPBP6-20)



  • The HPBP6-20 has a 31.5 gal (119 L) fuel tank and a 91 gal (344 L) hydraulic tank with 82 gal (310 L) fill capacity. The large hydraulic tank helps keep the oil cooler, extending the life of the hydraulic system.
  • Commercial Intertech four-section hydraulic control valve provides bending operations and optional hydraulic mandrel operation.
  • Machine sideplates are reinforced with stiffeners for optimal frame life. Side plates are 3/4″ (19.1 mm) T1 steel. All welds are preheated, heat controlled and made “in position.”
  • Frame cross tubes supporting the hydraulic cylinders have 3/8″ (9.5 mm) wall thickness.
  • Parker Seal Lok™ hydraulic system prevents leaks and has a working pressure rating of 3,000 psi (206.8 bar).
  • Murphy control panel includes electric start, throttle control, oil pressure, tachometer and hour meter.
  • Hydraulic cylinders can be disassembled without cutting for ease of repair.
  • Pinup is fully reinforced to prevent spreading.
  • 325 Quincy air compressor is hydraulically driven by its own circuit.
  • 10-micron hydraulic return linekeeps oil clean to extend the life of the system.
  • Oil cooler in compressor drive circuit keeps the circuit cooled. It continuously circulates, even when the compressor is not running. This extends the life of the hydraulic system.
  • Inner pipe roller provides smooth pipe translation.
  • Darby-designed tracks utilize Berco components.


  • Maximum bending force at front of stiffback is 301,600 lbs (136,803 kg).
  • Air compressor provides 240 psi (16.6 bar) for mandrel operation.
  • With engine running at 2,200 rpm, the hydraulic vane pump produces 46 GPM (174 LPM) at operating pressure.


  • Air-cooled Deutz Diesel Engine
  • Poly Tracks

Technical Specifications:

Length 16′ 7″ (5,054 mm)
Width 7’4″ (2,235 mm)
Height 7’8″ (2,336 mm)
Weight 20,020 lbs (9,081 kg) (w/o bending set)
Engine CAT C4.4 Turbo Diesel, 109 hp @2,200 rpm
Winch WARN 12,000lb Hydraulic Planetary Winch
Air Compressor Quincy 325 LVD Air Compressor w/ hydraulic drive and 30 gal (113.6 L) reservoir
Cylinders Two 8″ (203.6 mm) outboard cylinders w/ 18″ (457.2 mm) stroke
Two 7″ (178 mm) inboard cylinders w/ 6″ (152.4 mm) stroke
One 5″ (127 mm) pin-up cylinder w/ 24″ (609.6 mm) stroke
Hydraulic Pump Denison Dual Pump
Oil Cooler American Industrial