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FABTECH 2026

AC Machinery

Welding Automation

FIT-UP

by Akyapak

Two-unit fit-up rotator with one stationary unit and one rail-mounted movable unit that concentrically aligns and welds two cylindrical workpieces.

Two-unit fit-up rotator (one stationary, one rail-mounted movable)

Configuration

5 to 100 tons (5 to 100 tonnes)

Standard Load Capacity

Up to 300 tons available in custom configurations

Extended Load Capacity

Financing Available
FIT-UP

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FIT-UP — detail view
Two-unit fit-up rotator (stationary + rail-mounted movable)

ACM supplies the Akyapak FIT-UP converter for fabricators joining two cylindrical sections into one welded assembly, including wind tower segments, pressure vessel sections, ship hull cylinders, tank fabrication, and similar circular structures. Where a conventional rotator handles a single workpiece, the FIT-UP system aligns and joins two: it consists of one stationary unit and one movable unit that travels along customisable rails, letting operators position the second cylinder to meet the first concentrically before the weld pass. The centre axis serves as the joining axis and can be customised and moved to accommodate various part sizes. The movable unit's position is adjusted up and down with hydraulic cylinders and right and left along the rail using a trolley walking drive. Standard load capacity ranges from 5 to 100 tons, with custom configurations available up to 300 tons, and the FIT-UP handles cylinders from 3,000 to 6,000 mm in rotation diameter (about 10 to 20 ft). Each cell is configured during the design phase to match specific requirements, including rail length and the number of rotating units. Operators control rotation speed via a digital display and a 5 m corded remote control, the same controller standard across the Akyapak turning roll family. The FIT-UP is purpose-built for peripheral welding processes, particularly the joining of two cylinders end-to-end. ACM helps you specify the FIT-UP system to your typical workpiece sizes and supports installation, operator training, and ongoing service from Cambridge, Ontario.

Ideal For

  • Fabricators producing wind towers, pressure vessels, or other large cylindrical assemblies who need to concentrically align and weld two cylinder sections together

Configuration

Two-unit fit-up rotator (one stationary, one rail-mounted movable)

Standard Load Capacity

5 to 100 tons (5 to 100 tonnes)

Extended Load Capacity

Up to 300 tons available in custom configurations

Rotation Diameter Range

3,000 to 6,000 mm (about 10 to 20 ft)

Key Features

FIT-UP Features

Standard features that set this machine apart in demanding manufacturing environments.

Precision & Performance

  • Centre axis customisable for varying part sizes
  • Adjustable rotation speed with digital display on the remote

Ease of Operation

  • Concentric alignment of two cylinders for end-to-end joining welds
  • 5 m corded remote control standard

Built-In Extras

  • Two-unit configuration with one stationary and one rail-mounted movable unit
  • Hydraulic cylinders adjust the movable unit up and down for height matching
  • Customisable rail length and number of rotating units per cell, configured at the design phase
  • Trolley walking drive moves the unit along the rail for length matching

Video

See the FIT-UP in Action

Full Specifications

Akyapak FIT-UP Converter Technical Details

Complete specifications, standard features, and optional upgrades.

Configuration
Two-unit fit-up rotator (one stationary, one rail-mounted movable)
Standard Load Capacity
5 to 100 tons (5 to 100 tonnes)
Extended Load Capacity
Up to 300 tons available in custom configurations
Rotation Diameter Range
3,000 to 6,000 mm (about 10 to 20 ft)
Movable Unit Drive
Trolley walking drive on rails
Position Adjustment
Hydraulic cylinders (vertical) + rail trolley (horizontal)
Rail Length
Customisable to user requirements
Centre Axis
Customisable joining axis, moveable for varying part sizes
Rotation Speed
Adjustable, digital display
Control
Remote with 5 m cable (standard turning-roll controller)
Use Case
Concentric alignment and welding of two cylindrical workpieces
  • Two-unit configuration with one stationary and one rail-mounted movable unit
  • Concentric alignment of two cylinders for end-to-end joining welds
  • Hydraulic cylinders adjust the movable unit up and down for height matching
  • Trolley walking drive moves the unit along the rail for length matching
  • Centre axis customisable for varying part sizes
  • Customisable rail length and number of rotating units per cell, configured at the design phase
  • Adjustable rotation speed with digital display on the remote
  • 5 m corded remote control standard
  • Custom-length rails to fit production envelope
  • Additional rotating units integrated into the cell for multi-section welding
  • Special-configuration build with load capacity up to 300 tons
  • Wind tower segment assembly
  • Pressure vessel section joining
  • Ship hull cylinder welding (offshore and shipbuilding)
  • Tank fabrication (joining two tank sections)
  • Tower fabrication for industrial structures

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