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Description
Technical data Ø15.5 mm metal drill bits
| Technical data | |
|---|---|
| Working diameter of drill d | Ø15.5 mm |
| Overall length l1 | 178 mm |
| Flute length l2 | 120 mm |
| Shank diameter d1 | 13 mm |
- Drill bit manufactured according to DIN-338
- Suitable for drilling materials up to 35 HRC
- 118° point angle suited to drilling steel and cast steel
- Made from the finest grade of high-speed steel (HSS)
- Produces a hole with an h8 tolerance
- Low hole surface roughness
Cutting data for the Ø15.5 mm HSS NWKa drill bit
| Material | Cutting speed Vc [m/min] | Feed per revolution f [mm] | Spindle speed n [rpm] | Total feed rate [mm/min] |
|---|---|---|---|---|
| PSteel | 14-25 | 0.16 | 288 | 46 |
| KCast iron | 10-18 | 0.16 | 205 | 33 |
May be useful
Cutting parameters calculator
15.5 mm reduced-shank HSS DIN 338 metal drill bit – a professional standardized tool
Specialized Ø15.5 mm HSS drill bit to DIN 338 with a reduced shank is a tool designed to industrial standards. The 13 mm diameter shank ensures quick installation in standard drill chucks. DIN 338 guarantees precisely defined design and material specifications.
Specifications of the Varel Ø15.5 mm drill bit to DIN 338
- Compliance with DIN 338 – standardized 118° point angle and precise helical flute geometry
- Shank reduced to 13 mm – immediate installation in stationary drilling machines and magnetic drills without sleeves
- Universal 118° angle – a value specified in DIN 338, effective across a wide range of materials
- High-precision grinding – ensures cutting-edge quality and hole dimensional accuracy
- HSS steel meeting DIN 338 requirements – a material with properties that ensure adequate hardness and resistance
- Varel-branded tool – a tool manufacturer for the mechanical engineering industry
DIN 338 provides the foundation for tool predictability and interchangeability in various industrial applications. The shank reduced to 13 mm increases versatility across standard machine equipment without requiring additional investment.
Frequently asked questions
DIN 338 is widely accepted in industry because it precisely defines tool specifications. This ensures compatibility, predictable performance, and interchangeability of products from different manufacturers.
Cooling is strongly recommended at diameters close to 16 mm for optimal results. Using suitable cutting fluids extends tool life and improves the quality of the holes produced.
For mild structural steels, the optimal range is 280-380 rpm; for higher-strength steels, 235-315 rpm. Correct speed selection directly affects cutting efficiency and drill life.
Product accessories
Metal drill bit 15.5 long 227/149 HSS DIN 340
Reference: 0263 In stock > 10 items
€9.21
€11.33 brutto
Tapered countersink 20.5/90 DIN 335 C HSS
Reference: 11248 In stock > 10 items
€14.47
€17.80 brutto
14.5 mm HSS DIN 338 fluted metal drill bit
Reference: 926019 In stock < 10 items
€4.74
€5.83 brutto
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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