1 x 3.3mm HSS Cobalt JOBBER Drill BIT - for Drilling Stainless Steel, CR-NI & Hard Steel- Choice of 30 DIAMETERS - 1mm to 13.0mm

Product Information

You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Made from cobalt alloy, these drill bit are highly durable and heat resistant providing extended the life of the drill bit. When I get my bench and bench grinder out of my hall cupboard later this year, I shall attempt to sharpen.

This durable engineering quality drill will give a consistent rapid performance into all non-alloy materials. diameter EXTREME 2„¢ Metal Drill Bits are suitable for portable drilling of steel, alloyed and non-alloyed up to 900 N/mm2. Make the most of your storage with BUNKER - choose from modular options, 4 clever ready-made combinations or stylish roller cabinets. This generally means the length of the entire drill bit itself is significantly longer for diameter it has. Brought to you by RS PRO, a range of jobber drill bits suitable for high-speed metal, wood and plastic drilling.Suitable for drilling high alloy content steels and metals with tensile strengths over 1000 N/mm² like heat and acid proof steels and stainless steel. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. The added 5% Cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life.

We started exhibiting at model engineering exhibitions in 1994 and realised from the shows that people wanted quite specialised tooling for their machines and also a wide range of tooling which they could adapt to suit their needs. These precision-ground drill bits enable up to 40% faster drilling and up to 50% lower feed pressure than standard-ground HSS drill bits with a chisel edge.

I used the drill on a very low speed, and whilst it was effective to begin with, the bit became blunt before I could drill through the bolt. Designed as a twisted drill bit, these attachments guarantee excellent performance and will be an asset to your application. HSS-G drill bits (10 pack) are suitable for drilling alloyed and non-alloyed steel up to a tensile strength of 900 N/mm², cast steel, cast iron, malleable cast iron, sintered iron, non-ferrous metals and hard plastics. As a standard drill can spin upwards of around 500 - 700rpm, the friction can cause a substantial build-up of heat. They mention that it serves them well for quite a while, is durable, and has long-lasting performance, even on hard steel.