What is a step drill bit used for?
When cutting an abrasive material with a drill you need to choose the size of the hole’s diameter before you start. Step drill bits are cone-shaped (known as the flute) and allow you to drill the diameter you require without having to change the drill bit.
Step drills are significantly harder than most standard abrasive materials because they’re made from cubic crystalline boron nitride (CBN). This super-abrasive chemical compound is almost as hard as diamond and commonly used for tapping, drilling and deburring sheet metal.
Step drills are created with a step angle of 90° which allows a seamless movement from one step to the next. This subtle change enables chamfering and deburring of the hole once the optimum diameter has been achieved.
Step drill sizes
Step drills come in multiple sizes. Each size relates to the diameter of the hole and the amount of steps required to create it. For example, a size one step drill has a range of diameters split into nine steps.
Point angles, split points and grooves
Step drill bits feature a point angle at the head. This is to ensure the drill can centre itself on the material. The smaller the size of the point angle the less pressure is required for centring.
When using a step drill for tapping, the drill bit needs an additional angle at the head to create a split point. This is the same as what you’d find on a twist drill.
Grooves are also used on step drill bits either in spirals around the flute or as straight grooves along a side. Grooves are used to remove chips and burrs so as to lessen the heat on the drill and provide a superior cutting finish.
A superior solution to twist and core drills
Precision in drilling is everything. That’s why the world’s first all-in-one step drill is set to change the way you work, for the better.
From lessening machining time to taking out the need for centre punching, this is the ultimate alternative to twister drills and offers a massive 75% saving in processing time.
Thanks to a specially designed turbo tip by RUKO, quick and easy tabbing is guaranteed as well as alleviating the threat of slippage on the material you are drilling.
Time consuming tool changes will be a thing of the past as this has five tools in one. Pre-drilling and varying hole diameters are possible using the same drill bit.
Power is also important when looking at key requirements for a step drill. Thanks to four superior cutting edges, the all-in-one drill creates the same level of power usually associated with core drills and alleviates the need for extra deburring.
Flexibility is another key feature of the all-in-one drill. Whereas magnetic standing machines aren’t able to cope with holding forces in thin materials less than 10mm, the all-in-one drill CAN thanks to its specifically designed step process.
What are the benefits of the world’s first all-in-one step drill?
·It’s multifunctional with five tools in one so no need for tool changes
·It can increase productivity by saving up to 75% on drill time
·It’s incredibly flexible and can manoeuvre in hard-to-reach places such as T-beams
·A state-of-the-art turbo tip takes away the need for centre punching
·It’s easy to work with material less than 10mm which can often be problematic for magnetic stand drilling machines
·There’s no need for additional deburring thanks to the subsequent step transitions taking out annoying catching
Advantages over twist drills
Thanks to the design of the turbo tip, tabbing is a lot quicker than with a twist drill. Also, slipping is significantly reduced and no centre punching is required or the need for extra deburring. Combine these benefits with the lack of drill bit changes required for pre-drilling and different hole diameters, and you’re looking at saving up to 75% in processing time when compared with a twist drill.
Advantages over core drills
The beauty of this step drill is that its superior performance power provides the ultimate in cutting edges. This level of power is usually only found in large core drilling machines which are often highly inflexible. As the one step drill is manual it can get into far more places than heavier core drill alternatives. Flexible, efficient, and powerful – now that’s a winning combination.