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Horological Wheel and Pinion Cutters

P.P. Thornton

We are an official supplier of P.P Thornton Horological Cutters, offering their complete range of Cycloidal Wheel and Pinion Cutters for clocks and watches, at no extra cost to you. We also offer their Fine Tooth Recoil Escape Wheel Cutters, Dead Beat Escape Wheel Cutters, Radiused Tooth Ratchet Cutters and Form Relieved Straight Tooth Ratchet Cutters.

  • M42 8% cobalt HSS for wear resistance
  • Wheel Modules: 0.09 - 1.5
  • Pinions: 6, 7, 8, 10, 12, 16 leaves
  • Escapes: Recoil or Dead Beat
  • Ratchets: Straight or Radiused
  • 7mm Bore

We do offer every single Horological Cutter size so if the cutter you are looking for is not shown below then please contact us to arrange delivery.

Please note, some cutters can take between 2-3 days to be delivered to the UK

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Recommended Cutting Speeds

For cutting carbon steel pinions with high speed steel cutters:

  • Cutter Diameter 14mm 430-500 rpm
  • Cutter Diameter 20mm 300-350 rpm
  • Cutter Diameter 24mm 250-290 rpm
  • Cutter Diameter 26mm 230-270 rpm

for cutting brass a speed of up to 3000 - 4000 rpm can be used but a much lower speed will preserve the life of the cutter.

Customer Reviews

Thornton wheel cutters are excellent.
They supply P.P. Thornton cutters - probably the best in the field, based on my experience - I use them for my pinions and wheels, when I don't have to make my own. If one has to purchase a second cutter of the same Module at a later date, one can feel assured that both the new cutter will replace the worn one identically. They have mastered "reliability and repeatability" in such a small precision tool.<br/><br/>Price is competitive, and Eternal Tools service is exceptional.
Excellent pinion cutter made by Thorntons.<br/>Compliments my collection of Wheel & Pinion cutters.

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" A fantastic service every single time. Delivery is prompt and the range of items is excellent "

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" All I can say is WOW! Very very impressed and a big thank you to your company "

" Your service was top notch, as are your products and we'll be ordering again soon "

" A fantastic service every single time. Delivery is prompt and the range of items is excellent "

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