Dormer DOR550TIN A002 HSS-TiN Coated Jobber Drill 5.50mm OL:93mm WL:57mm

Dormer DOR550TIN A002 HSS-TiN Coated Jobber Drill 5.50mm – Drill Bits

The Dormer DOR550TIN A002 is a high-performance jobber drill bit designed for precision and durability in metalworking and general engineering applications. Manufactured from premium HSS (high-speed steel) and coated with titanium nitride (TiN), this 5.50mm drill bit offers enhanced longevity and cutting efficiency compared to standard bits.

• Diameter: 5.50mm
• Overall Length: 93mm
• Working Length: 57mm
• Material: HSS (High-Speed Steel)
• Coating: Titanium Nitride (TiN)

Compared to conventional HSS drill bits, this Dormer model sets itself apart through advanced TiN coating technology, significantly increasing wear resistance and tool life. While standard jobber drills may require frequent replacements under heavy use, the DOR550TIN A002 provides remarkable extended service intervals, reducing operational downtime and improving workflow efficiency. The carefully engineered point geometry ensures cleaner, more accurate holes than many generic alternatives.

Key Technical Advantages:

Technology and Performance

The titanium nitride coating minimises friction and heat build-up during drilling, allowing for faster cutting speeds and smoother chip evacuation. This coating also resists wear and abrasion, helping maintain sharpness over prolonged use. The robust HSS substrate ensures the drill bit remains tough and resilient, making it suitable for a range of materials including mild steel, alloyed steel, plastics, and non-ferrous metals.

The Dormer DOR550TIN A002 falls squarely within the premium segment of drill bits, easily rivaling and often outperforming equivalent products in both professional and domestic settings. Its precisely ground, split-point tip offers excellent self-centring, reducing wandering and eliminating the need for centre-punching. This high-quality drill bit is ideal for workshops and industrial users seeking reliability, precision, and value from their drill bits.

Invest in the Dormer DOR550TIN A002 HSS-TiN Coated Jobber Drill if you require dependable, consistent results for repeated drilling tasks—making it one of the best jobber drill bits currently available on the market.