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The A:680HD I/O Sizer incorporates back-to-back hydraulic cylinders (6" and 8") in the standard A:601 series machine design.


The A:680HD I/O Sizer incorporates back-to-back hydraulic cylinders (6" and 8") in the standard A:601 series machine design.

A:680HD (heavy duty) I/O Sizer Features

  • Back-to-back hydraulic cylinder design optimizes system for required forming pressures on dies and fingers
  • 8" diameter cylinder for dies can deliver over 50 tons forming force
  • Tooling repeatability to .001"
  • Modular construction allows multi-function configurations on common base
  • Use of standard components minimizes downtime due to replacement parts shortage
  • Total access design for ease of maintenance
  • Efficient machine design enables more efficient work cell layout (3'W x 8'L x 6'H)
  • Heavy duty top tooling assembly, including 2 " diameter tie rods and larger plates

With new heavy duty top tooling components the A:680HD delivers superior forming capability for heavy wall and large diameter tubes.

Allen Bradley SLC 503 based systemCONTROL

  • Allen Bradley SLC 503 based system
  • Active Matrix operator terminal
  • Memory storage to set up positioning for up to 12 part numbers
  • Operating and maintenance diagnostics and warnings
  • Manual operation override


  • 20 HP Vickers motor and piston pump rated to 3000 PSI
  • Overall system specified and configured to deliver pump's full capability
  • Oil cooled, fully sound enclosed pump and motor with hydraulic shock suppressors provide quiet operation
  • Piston pumps unload at idle for less wear, better filtration, less heat build up
  • Servo performance Vickers proportional valves and linear transducers for accurate CNC I/O operation
  • Vickers proportional valves provide faster response and lower pressure for improved accuracy and reduced heat build up
  • Sensors for low oil, temperature, and dirty filter


  • Top mounted valves, filters, and sensors for easy access in crowded work cells
  • Lexan covers provide quick access to tooling and service points
  • Complete 2 side access to motor & lube pump without removal from position in work cell
  • Fittings provided for easy oil replacement / recycling
  • Large tank access for easy cleaning
  • Readily available standard components minimize spares inventory and downtime

For the same back-to-back hydraulic cylinders and extended tool nest design see the A:680C-HD I/O Sizer

For more information on tube end forming machines, contact us.

Aristo Machines
2695 Progress Way
Wilmington, OH 45177
Phone: 937-382-6710

© 2018 Aristo Machines