OBS PF Series Hydraulic Presses

Description:

The Gap Frame hydraulic press design (sometimes called C-Frame hydraulic presses) allows three-sided accessibility to the work area. Suitable for both short-run and high production applications these “all purpose” workhorses deliver unmatched productivity and life expectancy. Pacific’s single cylinder down-acting (self-guided) models are available in six to eight point gibbed configurations. The one-piece welded and machined frames guarantee superior rigidity. Either manual or CNC controlled, they are available with high speed hydraulic packages.

Applicable markets:

All OEM and contract stamping markets performing deep draw work, bending, forming and/or blanking work on a single press.

Key Features:

  • Gap frame versatility
  • Wide range of applications
  • Eight point gibbing improves rigidity, die performance
  • Industry's most advanced and dependable hydraulic system… designed and built by Pacific
  • Working speeds rivaling (sometimes exceeding) comparable mechanical designs
  • Total power/controllability throughout the stroke
  • Numerous optional features

C-Frame Series
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Pacific "All Products"
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OBS Pressformer Series - Eight Point Gib Guiding Facilitates Improved Alignment; Smooth, Ultra-Fast Press Speeds OBS Pressformer Series Hydraulic Presses

Eight Point Gib Guided Performance Facilitates Improved Alignment
and Smooth, Ultra-Fast Press Speeds

The OBS PF represents industry's ultimate hydraulic C-frame press.
This "all purpose" workhorse delivers unmatched productivity,
increased part quality/die clearance.

All OBS PF models include single cylinder, C-Frame design which provides for three-sided accessibility to the work area, suitable for diversified short-run applications as well as high production work. Specifically, the OBS (Open Back Stationary) PF design consists of a single cylinder down-acting design; 8 point (long, square type, adjustable) non-metallic gibbing for superior accuracy/rigidity; one-piece welded frame/box bed construction; removable slide and bed bolsters; and a high speed, air/oil cooled hydraulic package with full tonnage supplied throughout the stroke. Tackle a wide range of jobs including blanking, punching, deep draw forming, embossing, coining, even coil-fed operations…with confidence and affordability in mind.

Choose from 110, 150 and 250-ton standard models, bolster sizes ranging from 21" x 29" to 28" x 36"
(see specification chart below).

Check out our other Pacific Press Technologies C-Frame designs — PFII (not gib guided, manual)
and the PFII G (6-pt gib guided).

Contact us about our OBS Pressformer Series Hydraulic Presses.

Standard Features:

Take a look at these key machine features/user benefits…

  • Rugged Construction: Key feature to the design is its 8 point (long, square type, adjustable) non-metallic gibbing that provides better support, alignment, and smoother operation of the slide assembly at higher stroking speeds. (8-point gibbing is typically only found in larger straight side presses.) Deep side housings, box-type bed construction and inverted cylinder design provides a lower profile press structure to minimize deflection and deliver an impressive accuracy during higher capacity operations. Ample open heights and deep throat permits the use of large dies and easy access to the tooling from three sides-improved set-ups and adapting to any needed automation. Plus an open back design facilitates scrap removal. Large removable tool holder and bed bolster (removable) is offered in standard or custom configurations.
  • State-Of-The-Art Hydraulic System: Each press is equipped with a compact, high-speed hydraulic system enabling fast cycle speeds that can equal or surpass those of mechanical presses of comparable size. Pacific-built modular "stack" cartridge valve design delivers minimized heat build up, reduced piping and fitting requirements, and improves safety/maintenance issues (automatic decompression, non overloading, etc.). The power unit provides advanced operational speeds (rapid advance/normal press and normal press/normal press) and a high return speed, with speed/speed changes adjustable at any point in the stroke.
  • Superior Controllability: Unlike mechanical presses, full rated tonnage and generous open heights deliver power throughout the stroke. A two-hand control is standard and provides for safe operation. A keyed mode selector switch aids set up and production applications (settings include: off, inch, single stroke manual return, single stroke automatic return). PLC interface control (Allen Bradley 550 Panel View) is standard on the OBS, enhancing set-up and operational performance. (Control features include: complete adjustability of top and bottom stroke settings, press speed/knockout points adjustable at any portion of the stroke.
  • Laser Bend Alignment: Two laser line generators — one at each end of the tandem system - project a visible line at the centerline of the installed tooling. A blank with the bend lines marked is moved into the press brake until the mark and the visible laser line are aligned and the press brake is cycled to accurately complete the bend. An optional center mount (removable) laser line generator is available when a single press brake of the tandem system is to be used.

Optional Features:

  • 8-point (long, square type, adjustable) gibbing for superior accuracy
    8-point (long, square type, adjustable) gibbing for superior accuracy
    Color PLC Interface (AB 600 Panelview)
  • Pendant mounted Control
  • Higher Speed Hydraulic Packages
  • Increased Open Heights
  • Quick Die Change Systems
  • Die Cushions
  • Hydraulic Knock-outs
  • Coil Feeding/Handling Systems
  • Specially Machined Bolsters and Slides
  • Additional Operator Stations
  • Continuous Run Operation
  • Safety Enhancing Optional Features (light curtains, barrier guards, two hand controls, slide safety blocks)

 

OBS Specifications

      
Tonnage 110 150 250
Stroke 10 10 12
Open Height 15 17 21
Closed Height 5 7 9
Throat Depth 14 16 18
Distance Between Housings 29 31 36
Machine Height 140 144 160
Machine Width 53 59 67
Machine Depth 114 98 115
Housing Projection Below Floor 0 0 7
Tool Holder Size (F to B x L to R) 21 x 29 24 x 34 28 x 36
Bed Bolster Size (F to B x L to R) 18 x 42 24 x 46 24 48
Bed Height Above Floor 34 36 37

All specifications are in "inches" unless otherwise marked.

OBS Speeds

      
Tonnage 110 150 250
Speed Package LEVEL 1 LEVEL 1 LEVEL 1
Rapid Advance 504 414 324
Fast Press Tonnage 40 55 90
Fast Press Speed 198 156 120
Normal Press 66 48 42
Normal Return 160 90 78
Fast Return 342 258 204
Motor Horsepower 30 30 40

All specifications are "inches per minute" unless otherwise marked.