Clamshell0 pages

Clamshell brochure:Pipe Facing Leaflet.qxd 15/11/2012 11:42 Page 1

Specifications
Frame
The aluminium frame is a split ring assembly capable of being disassembled to be installed
around in- line piping. The frame has bearing mountings for the rotating head, a drive motor
mount, locator pads for mounting to the pipe, and a gear cover.

In addition to retail, we also maintain extensive rental inventories. If you have an
emergency, or just need equipment for a specific job, our rental fleet is what you are
looking for. Our machines serve some of the world's major industries including
petrochemical, pulp and paper, power generation and shipbuilding, industries that rely on
precise and reliable equipment.

Bearings
The cutting head runs on precision bearings that provide for both axial and radial force reactions experienced in pipe machining. Mactech utilizes two seperate radial bearing arrangements in every machine, providing maximum rigidity of operation. They are designed so that
adjustments are not required.
Tool Holders (Blocks)
The tool holders mounted to the cutting head assembly are provided with automatic radial
feed “star wheel” mechanisms. They are designed to maintain the radial clearance equal to
the frame diameter and feature adjustable gibs for tool support.
Locator Pads
Adjustable locator pads are actuated by jackscrews from the outside of the frame. A set of
locator pads with extensions to cover the machine’s operating range is provided with each
machine. Additional sizes for each machine are available.
Tool Bits
Mactech tool bits are available for severing, severing and double beveling, severing and
beveling on the side of the cut on which the clamshell is mounted (right hand), severing and
beveling on the opposite side of the cut (left hand), counterboring, socket weld removal, etc..

Distributed by:

Unit 7, Scragg House, Langley Business Park, Langley Road,
Langley, Macclesfield, Cheshire SK11 0DG
Tel: +44 (0)1625 503306
Fax:+44 (0) 1625 618147
E-mail: info@mactecheurope.co.uk
Web site: www.on-site-machining.co.uk

Cold Cut and Bevel Pipe

Drive Assembly
The drive motor assembly mounts to the frame and is arranged with a pinion gear on a shaft.
The drive motor mount bracket is designed to accept the reaction torque generated by the
drive motor.

Mactech are specialist providers of portable precision pipe-severing/beveling machines.
We manufacture our machines to the highest tolerances to ensure that our equipment
will perform under virtually all conditions. In addition to manufacturing our own range of
leading pipe tools we also supply equipment from other leading names in the industry, and
also design and engineer custom tool bits for specific applications.

Clamshell Portable Lathes

Cutting Head Assembly
The cutting head assembly is a heat treated 4140 alloy steel split ring gear assembly, which
aligns with the split lines of the frame enabling the machine to be split in half. The cutting
head has an integral spur gear on the outside diameter, and mounting devices for tool holders.