Blacksmith Drill Bits

Blacksmith Drill Bits are a type of Twist Drill that is rolled and typically has a reduced shank. These high-performance drill pieces can pierce through tough materials like Cast Iron.

Blacksmith Jobber Twist Drill Bits

 

Drill Bit Shape and Structure

A unique feature to the Blacksmith Drill Bit is the Reduced Shank. This means that the Drill Bits have a smaller diameter of a shank over the cutting head of the drill bit. Thus, allowing for a larger hole to be created whilst still being compatible with standard sizes of drill chucks on handheld drills. This DIN 338 Drill Piece has an 118° Point Angle with a Shape N Tip Grind allowing for a drilling depth of 5 times the standard diameter. The Shape Type N means that the Blacksmith Drill Bits have a Helical Point Cut with a normal ground twist structure giving a strong deep cut.

Blacksmith Jobber Twist Drill Bit

 

Drill Bit Craft and Material

The Blacksmith Twist Drill Bit has a more robust coating and structure compared to other Jobber Twist Drill Bits. The manufacturing procedure (with no structural disruption) solidifies the material making it more elasticated. This makes it more resistant to fracture and suitable for robust drilling units (e.g. hand-held drilling machines). Ideally suitable for drilling larger drilling diameters on all commonly used drill machines with a clamping chuck up to 13.0 mm. These drill bits are typically steam treated and have a black surface coating treatment which allows for a more robust tool piece against corrosion and a much stronger quality finish.

 

Blacksmith Drill Bit Tolerance and Capability

A typical Blacksmith Jobber Twist Drill Piece can withstand a clamping chuck of up to 13mm or ½ inch. Due to the Reduced Shank (where the shank has a smaller diameter over the cutting head of the drill bit), they can drill much larger holes within a material whilst also remaining compatible with standard sizes of drill chucks on handheld drills. The high strength and performance of the drill piece makes it ideal for drilling through hard materials such as Cast Iron and Bronze. Most Blacksmith Drills can handle Steel < 900 N/mm², as well as Aluminium, Brass and Plastics. Due to the shape and shank structure, Blacksmith Bits can drill up to 5 x the depth of a typical twist drill bit and the standard diameter

 

Drill Bit Comparison

The table diagram below shows the specifications between other typical HSS Jobber Twist Drill Bits:

 

Blacksmith (HSS-R) Reduced Shank

Twist Drill (HSS-G)

Twist Drill (HSS-G) with TIN Coating

Twist Drill (HSSE-C05) contains 5% Cobalt

Twist Drill (HSS-R)

Image

 

 

 

 

 

Surface Coating

Black Surface

No Coating (Silver)

TiN Coating

Bronzed Surface

Black Surface

Shaft Shape

Reduced Shank

Cylindrical

Cylindrical

Cylindrical

Cylindrical

Material

High Speed Steel (HSS)

High Speed Steel (HSS)

High Speed Steel (HSS)

High Speed Steel with 5% Cobalt (HSSE-CO 5)

High Speed Steel (HSS)

*DIN

338

338

338

338

338

Type

N

N

TL 3000

VA

N

*Point Angle

118°

118°

130°

130°

118°

*Spiral Angle

25° - 30°

20° - 30°

40°

36°

25° - 30°

Drilling Depth

5 x Diameter

5 x Diameter

5 x Diameter

5 x Diameter

5 x Diameter

Tolerance

h8

h8

h8

h8

h8

Groove Profile

Normal

Normal

Wide with Rounded Rear Edges

Thickened

Normal

Core

Normal

Normal

Thick

Thickened

Normal

*Cutting Direction

Right Hand Cutting

Right Hand Cutting

Right Hand Cutting

Right Hand Cutting

Right Hand Cutting

*Tip Grinding

Shape N: Helical point normal ground

Shape C: Split point

Shape C: Split point

Shape C: Split point

Shape N: Helical point normal ground

*Typical Estimated NET Weight (kg)

0.18 kg

0.022 kg

0.024 kg

0.025 kg

0.024 kg

*Applications

Heavy Duty: Steel < 900 N/mm², Aluminium, Brass, Plastics, Bronze, Cast Iron

Lighter Uses: Steel < 900 N/mm², Aluminium, Brass, Plastics, Light Use on metals such as Bronze and Cast Iron

Steel < 1100 N/mm², Stainless Steel, Aluminium, Brass, Plastics, Light Use on metals such as Bronze and Cast Iron

Steel < 1100 N/mm², Stainless Steel, Aluminium, Brass, Plastics, Light Use on metals such as Bronze and Cast Iron

Steel < 900 N/mm², Aluminium, Brass, Plastics, Light Use on metals such as Bronze and Cast Iron

*Based off most standard Drill Bits. Source of the Twist Drill Bit technical data derives from the stock available at RUKO.

 

Panther PPE Protection available at RUKO UK

 

RUKO offer a wide range of Blacksmith Twist Drill Bits, available to view online here.

RUKO Blacksmith Drill Pieces
Contact RUKO UK

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