Sub Contract Engineering

Robert (Bob) Bray had one simple goal for Sinclair Harding, this was to be totally independent and capable of making every part for each clock. This has enabled Sinclair Harding to develop their in-house capacities to include precious metal plating, Fusee chain making, manufacturing and hand tuning bells, French polishing, engraving and hand silvering of dials, Bluing of screws and hands, even mainspring manufacture is now undertaken.  

Our skilled craftsmen coupled together with modern technology have enabled us to offer sub-contract engineering to the highest standard. We are able to work with one offs and batch quantities from design, manufacture to the end product using various materials and finishes.

For a quotation please contact us with your requirements at

Plant List
Milling Capacity (XYZ)

HAAS S MINI MILL – 406 X 305 X 254mm
Spindle speed – 10000 rpm
4th Axis

HAAS S MINI MILL 2 – 508 X 406 X 356mm
Spindle speed – 10000 rpm

DMG MORI SEIKI MILLTAP 700 – 700 X 420 X 380mm
Spindle speed – 24000 rpm
Tool Magazine – 25
Renishaw Probe

Turning Capacity (XZ)

Spinner SB CNC – 250 x 285mm
Max Bar Diameter Capacity 32mm
Spindle speed – 8000 rpm

HAAS OL – 305 x 203mm
Max Bar Diameter Capacity 26.9mm
Spindle speed – 6000 rpm

DMG MORI SEIKI CTX 310 ecoline
Swing Diameter Max 330mm
Turning Diameter Max 200mm
Stroke in Z axis 455mm
Max Bar Diameter Capacity 51mm

Wire Erosion (XYZ)

EDM CNC AWT455S WIRE CUT – 450 X 300 x 150mm

General enquiries

Contact info

Phillips House,
Chapel Lane,
West Yorkshire,
HD8 9ST,

Tel: +44 (0) 1924 840 666

Download brochure

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