JCB Multi Purpose Drill Bit - 3 x 70mm

Upgrade your drilling experience with the JCB Multi-Purpose Drill Bit featuring a robust carbide t...

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Product Information

Full details

The JCB 3mm x 70mm Multi-Purpose Drill Bit is an ideal solution for DIY enthusiasts and professionals seeking a single, versatile tool capable of handling masonry, metal, and wood. Its standout feature is the durable carbide-tipped construction, which provides long-lasting performance across varied material densities; however, users should note that as a multi-purpose bit, it may not outperform specialized bits when exclusively drilling into hardened steel or reinforced concrete.

All features

Model Part Number	5055803310516
Brand	JCB

Extended Product Information

FAQs

Can I use this bit for hardened concrete?

While it can handle masonry, it is not designed for hardened concrete or reinforced concrete with rebar; a specialized SDS masonry bit is recommended for that purpose.

What is the best speed to use?

Use a slower speed for metal and a moderate-to-high speed for wood and masonry.

Does this bit require a hammer-action setting?

It can be used with hammer-action for masonry, but it is primarily designed for rotary-only drilling for better precision in wood and metal.

How do I know if the tip is dull?

If you find yourself having to apply significantly more pressure than usual to make progress, the carbide tip has likely lost its edge.

Is this suitable for stainless steel?

It can cut through mild steel, but stainless steel is highly abrasive and may dull the carbide tip very quickly.

Troubleshooting

Bit is slipping in the chuck

Ensure the drill chuck is tightened sufficiently and verify the bit shank is free of oil or debris.

Drill bit is overheating and smoking

Reduce the drill speed (RPM) and apply cutting oil if working with metal; decrease pressure if working with wood.

Hole is uneven or oversized

Check that you are not applying lateral pressure (side-loading) while the bit is rotating.

Pros and Cons

Pros

Excellent versatility across three different material types
Carbide tip significantly increases the lifespan of the tool
135-degree tip design allows for accurate starts without slipping
High-quality build ensures consistent drilling efficiency

Cons

Not intended for heavy-duty industrial concrete drilling
Requires careful speed adjustment depending on the material
Small 3mm size is susceptible to snapping if side-loaded

Setup, Compatibility & Care

This bit is compatible with all standard keyed and keyless chuck drills, including cordless impact drivers and corded power drills. To ensure maximum longevity:

Storage: Keep the bit in a dry, organized case to prevent moisture-induced corrosion on the shank.
Drilling Technique: Always use a center punch for metal to ensure accuracy and prevent the bit from drifting.
Cooling: When drilling through metal, use a small amount of cutting oil to reduce friction and heat.
Maintenance: Regularly inspect the carbide tip for signs of chipping or dullness. Do not attempt to sharpen this bit with standard stone grinders, as it requires specialized diamond-abrasive equipment.