JCB Multi Purpose Drill Bit - 5.5 x 85mm
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JCB ToolsJcb 5.5 X 85Mm Multi Purpose Drill Bit | 5055803310547
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Product Information
Full details
The JCB Multi-Purpose Drill Bit (5.5mm x 85mm) is an ideal choice for DIY enthusiasts and trade professionals who need a versatile, reliable tool for frequent drilling tasks across diverse materials. Its primary strength lies in its high-quality carbide construction which offers superior durability compared to standard steel bits, though users should note that as a multi-purpose tool, it may not outperform specialized bits when drilling through hardened steel or highly abrasive stone.
All features
| Model Part Number | 5055803310547 |
|---|---|
| Brand | JCB |
Extended Product Information
FAQs
Can I use this bit on tempered steel?
This bit is designed for general purpose metal, wood, and masonry. It is not suitable for tempered or hardened steel.
Should I use hammer mode for all materials?
No. Use hammer mode only for masonry. For wood and metal, use rotary-only mode to prevent damage.
How long is the working length of the 85mm bit?
The 85mm refers to the total length; the working length is slightly less due to the shank engagement in the chuck.
Is this bit compatible with impact drivers?
While it fits the chuck, impact drivers deliver high-torque pulses that can shatter the carbide tip. It is best used with a standard drill-driver.
How do I know when the bit is dull?
If you notice it taking significantly longer to penetrate the same material with the same pressure, the cutting edge is likely worn.
Troubleshooting
The bit is slipping in the chuck.
Ensure the chuck is tightened evenly and that the shank is not contaminated with oil or debris.
Bit is getting very hot and smoking.
Reduce the drill RPM and apply less downward pressure to allow the flutes to clear debris.
Difficulty starting a hole on metal surfaces.
Use a center punch to create a small dimple before starting, or increase the initial pressure slightly to 'bite' into the surface.
Pros and Cons
Pros
- Versatile design handles multiple material types efficiently
- Carbide tip provides significantly longer life than standard HSS bits
- 135-degree angle ensures accurate, non-slip starts
- Effective debris removal through optimized flute geometry
Cons
- Not intended for heavy-duty industrial concrete drilling
- Requires proper speed adjustment to avoid overheating the carbide
- Single size limitation for specific hole diameter requirements
Setup, Compatibility & Care
Ensure the bit is fully seated within the drill chuck before tightening to prevent slipping or damage to the shank. For best performance in metal, use a cooling lubricant to preserve the bit's sharpness. After use, inspect the carbide tip for any signs of chipping. Store the bit in a dry place, preferably in its original packaging or a dedicated bit organizer, to prevent rust and edge dulling. Avoid dropping the bit on hard concrete floors, as impact can crack the carbide insert.