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A Bridgeport GX 1000 three-axis vertical machining centre from Hardinge Machine Tools has been installed in subcontractor Rotamic Engineering’s factory in Crediton, Devon.

The machine is Rotamic’s first Bridgeport CNC milling machine and, with the through-spindle coolant option fitted, rapid swing arm tool change and larger-capacity tool inventory, production managers at Rotamic hope it will be an invaluable addition to their manufacturing capacity.

Rotamic specialises in high-precision manufacturing with a focus on aerospace after it secured AS 9100 accreditation.

However, it can also provide specialist manufacturing services for applications such as motorsport components and medical and one-off and prototype machining.

In order to cope with a diverse mix of applications, Rotamic decided to purchase the Bridgeport mill with its ‘all-rounder’ capabilities coupled with higher-end specification.

Bridgeport GX VMC machines are claimed to combine exacting standards of precision with a high specification for long-life performance.

Standard features include a thermally stable spindle, a C-frame fixed-column design and fixed, pre-tensioned double-nut ballscrews.

In addition, the Bridgeport linear guide and guide track configuration provides rigidity and damping.

Rotamic’s machine has a 10,000rev/min spindle motor and is equipped with the through-spindle coolant option, which further enhances the machine’s versatility in this multipurpose environment.

Through-coolant supplies coolant to the cutting edge at 20bar (300psi) and enables faster speeds, enhanced deep-hole drilling and blind-pocket milling.

The machine is also fitted with a chip conveyor.

The swing arm tool change offers cycles as low as four seconds, and Rotamic’s machine was supplied with a Bridgeport tooling package comprising 40 tools.

The CNC control is the latest Fanuc I-Series GX control, which offers advanced features such as rigid tapping, tool life management, run time and parts counter as standard.

Hardinge Machine Tools

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