HSS annular cutter
HSS core drill bit
CREDRL-MET-HSS-DRLDP50MM-D20MM
Art.-no.
0630940200
EAN 4050642953789
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Standard annular cutter made from HSS for drilling large through-holes up to 50 mm in diameter with mobile magnetic or stationary drills in conventional steels up to 850 N/mm², wood and non-ferrous metals, such as aluminium, aluminium alloys and plastics.
High performance and rapid drilling progress with a long service life
In contrast to solid drilling, only a thin metal ring is cut. The drill core is ejected by an ejector pin.
No pre-drilling required, no formation of burrs
No pre- or post-processing required
Optimised cutting geometry
- Long service life compared to many standard core drill bits
- Clean drill profile
- Drill hole with precise tolerances
Precise guidance, no slipping
Suitable for overlap drilling. Problem-free drilling on curved surfaces and pipes.
Notice
- Unlike twist drill bits, the annular cutter only machines a thin ring of material rather than the complete bore diameter. The drilling core is removed using a pilot pin with spring power, which is not included in the scope of delivery. Annular cutters therefore offer a drilling time that is 10 times faster than twist drills bits.
- Sufficient continuous cooling during the entire drilling process considerably increases the service life of the annular cutter. Do not use dry.
- Not suitable for press chipboard, titanium or heat-resistant and high-alloy steels
- For materials and cutting value parameters, see the summary overview tables
- Wear appropriate protective equipment, such as eye protection, hearing protection devices and protective gloves
- Take off loose clothing or jewellery which could get caught in the moving parts
- Annular cutters must not be used with hand-held tools
- Before use, ensure perfect concentricity and the correct clamping function of the tool drive
Application area
Product information
Datasheets(X)
Application area
- With Weldon shank ∅ 19 mm for use on mobile magnetic drills or stationary drills for creating large holes with a diameter of up to 50 mm and a cutting depth of 30 mm or 50 mm
- Fein drills with QuickIn mount can be used with an adapter
- Application on stationary drills with Morse taper is possible using the appropriate mount holder
Instructions
- Insert the ejector pin into the core drill bit
- Push the core drill bit into the mount holder of the drill unit and tighten the hexagon socket screws
- The core drill bit is automatically locked into place when using quick-action mounts
- Make sure the core drill bit is sitting cleanly in the mount
- Putting the drill under lateral load during use may cause the tool to break
- Fix the drill unit into the right position for drilling — make sure the drill unit has a stable footing
- If necessary, secure the drill unit before drilling using a safety strap, especially for use on vertical surfaces and overhead work
- Pay attention to the speed table and use coolant
- Drill carefully (without centre punching and pre-drilling), pay attention to an even feed and even rotation speed throughout the entire drilling process
- Remove chips and drill core after each drilling operation
- Caution: Risk of injury, chips and drill core may be very hot and sharp
Quality | Würth-Standard |
Cutting depth | 50 mm |
Diameter | 20 mm |
Length | 84.6 mm |
Material to be processed | Steel, Aluminium, Wood |
Shank style | Weldon |
Surface | Plain |
Cutting material | HSS |
Service life (points system) | 2 of 4 points |
Drilling speed (point system) | 3 of 4 points |
Bore hole quality (point system) | 4 of 4 points |
Versatility (points system) | 2 of 4 points |
Drilling behaviour (point system) | 3 of 4 points |
| Key |
| vc = cutting speed [m/min] |
| n = rotation speed [rpm] |
| The suggested cutting values are reference values and must be adapted to the respective conditions. |
| For dia. 12.0-20.0 | |||||||||
| Material designation | Tensile strength | from dia. 12.0 | from dia. 16.0 | from dia. 20.0 | |||||
| vc | n | n | n | ||||||
| from | to | from | to | from | to | from | to | ||
| Steels | |||||||||
| General structural steels | ≤ 850 N/mm² | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Unalloyed heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Low-alloy heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 265 | 345 | 199 | 259 | 159 | 207 |
| Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 265 | 345 | 199 | 259 | 159 | 207 |
| Cast metals | |||||||||
| Cast iron | ≤ 240 HB | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Nodular graphite and malleable iron | ≤ 240 HB | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Non-ferrous metals | |||||||||
| Aluminium | ≤ 450 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Aluminium alloys | ≤ 450 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Wrought aluminium alloys | ≤ 400 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Aluminium cast alloys <= 10 % Si | ≤ 600 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Magnesium alloys | ≤ 400 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Low-alloy copper | ≤ 400 | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 |
| Short-chipping brass | ≤ 850 | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Long-chipping brass | ≤ 850 | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Short-chipping bronze | ≤ 850 | 15 | 20 | 398 | 531 | 298 | 398 | 239 | 318 |
| Plastics | |||||||||
| Thermosetting plastics | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 | |
| Thermoplastics | 20 | 25 | 531 | 663 | 398 | 497 | 318 | 398 | |
| For dia. 36.0-50.0 | |||||||||
| Material designation | Tensile strength | from dia. 36.0 | from dia. 40.0 | from dia. 50.0 | |||||
| vc | n | n | n | ||||||
| from | to | from | to | from | to | from | to | ||
| Steels | |||||||||
| General structural steels | ≤ 850 N/mm² | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Unalloyed heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Low-alloy heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 88 | 115 | 80 | 103 | 64 | 83 |
| Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 88 | 115 | 80 | 103 | 64 | 83 |
| Cast metals | |||||||||
| Cast iron | ≤ 240 HB | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Nodular graphite and malleable iron | ≤ 240 HB | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Non-ferrous metals | |||||||||
| Aluminium | ≤ 450 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Aluminium alloys | ≤ 450 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Wrought aluminium alloys | ≤ 400 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Aluminium cast alloys <= 10 % Si | ≤ 600 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Magnesium alloys | ≤ 400 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Low-alloy copper | ≤ 400 | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 |
| Short-chipping brass | ≤ 850 | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Long-chipping brass | ≤ 850 | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Short-chipping bronze | ≤ 850 | 15 | 20 | 133 | 177 | 119 | 159 | 95 | 127 |
| Plastics | |||||||||
| Thermosetting plastics | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 | |
| Thermoplastics | 20 | 25 | 177 | 221 | 159 | 199 | 127 | 159 | |
| For dia. 24.0-32.0 | |||||||||
| Material designation | Tensile strength | from dia. 24.0 | from dia. 28.0 | from dia. 32.0 | |||||
| vc | n | n | n | ||||||
| from | to | from | to | from | to | from | to | ||
| Steels | |||||||||
| General structural steels | ≤ 850 N/mm² | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Unalloyed heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Low-alloy heat-treated steels | ≤ 850 N/mm² | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Unalloyed heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 133 | 172 | 114 | 148 | 99 | 129 |
| Low-alloy heat-treated steels | ≤ 1,000 N/mm² | 10 | 13 | 133 | 172 | 114 | 148 | 99 | 129 |
| Cast metals | |||||||||
| Cast iron | ≤ 240 HB | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Nodular graphite and malleable iron | ≤ 240 HB | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Non-ferrous metals | |||||||||
| Aluminium | ≤ 450 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Aluminium alloys | ≤ 450 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Wrought aluminium alloys | ≤ 400 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Aluminium cast alloys <= 10 % Si | ≤ 600 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Magnesium alloys | ≤ 400 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Low-alloy copper | ≤ 400 | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 |
| Short-chipping brass | ≤ 850 | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Long-chipping brass | ≤ 850 | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Short-chipping bronze | ≤ 850 | 15 | 20 | 199 | 265 | 171 | 227 | 149 | 199 |
| Plastics | |||||||||
| Thermosetting plastics | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 | |
| Thermoplastics | 20 | 25 | 265 | 332 | 227 | 284 | 199 | 249 | |
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