Step Drills, please supply drawing as per requirement
Step Drills, please supply drawing as per requirement
- Produces multiple diameters in a single drilling pass — eliminates secondary boring or reaming operations
- Reduces cycle time significantly compared to drilling each diameter separately
- Maintains concentricity between stepped diameters since all are cut by the same tool in one setup
- Custom-manufactured to exact specifications — any combination of diameters and step lengths
- Retains all gundrill advantages: internal coolant, burnished finish, IT7 tolerance capability
- Ideal for components requiring counterbores, relief diameters, or seat features at depth
- Reduces tool inventory — one tool replaces multiple conventional drills
We’re currently working on enabling direct online ordering for your convenience. Soon, you’ll be able to place orders directly on our website.
In the meantime, please use the enquiry form or contact us via email or phone to place your order. We appreciate your patience.
Email: info@hammco.com
Tel: +44 (0)1442 212211
Before drilling commences the gun drill must be suported by a guide bush or pre-drilled start hole. Coolant is delivered directly to the cutting edges through the hollow shank and the chips are evacuated back along the V configuration of the tip and shank.
The periphery of the cutting tip is contoured in such a way as to provide both support pads and lubrication galleries. The forces generated by the single sided cutting action act directly on the support pads creating a burnished surface finish and size control down to IT7 tolerances.
Gun drill tips can be manufactured with a step that has either a cutting, or non cutting pilot. Coated tips are also available upon request. These may have a TiN (Titanium Nitride) coating, or a TiAlN (Titanium Aluminium Nitride) coating.
A regrinding service is available at our Hemel Hempstead factory for gun drills, Ventec drills and Speedfeed drills.
Hardened steel guide bushes and whip guides are available for purchase. See accessories. accessories.
What Makes Hammond & Company Different?
A world leader in deep hole drilling products with state-of-the-art manufacturing and internationally recognised expertise.
85+ Years
Three generations of UK craftsmanship
+0/-0.005mm
Guaranteed accuracy on every drill
Worldwide Delivery
Express shipping available
Lifetime Support
Expert technical assistance included
