Dormer A110 Long Series Drill Bit - 5/32in

The Dormer A110 Imperial Long Series Drill Bit is a high-quality general-purpose tool designed for...

Best current price£4.18from Power Tools Direct

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Power Tools DirectDormer A1101/8 A110 Hss Long Series Drill 1/8In Ol:106mm Wl:69mm
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Rapid Online - Rapid Electronics Ltd.Dormer A1101/8 A110 HSS Long Series Drill 1/8in OL:106mm WL:69mm
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eBayDormer A110 HSS Long Series Drill 1/8in OL:106mm WL:69mm
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The RangeDormer A110 Hss Long Series Drill 1/8In Ol:106mm Wl:69mm - Black
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OnBuy.comDormer Pramet Dormer A1101/8 Hss Long Series Drill 1/8In Ol:106mm Wl:69mm
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Product Information

Full details

The Dormer A110 5/32in Long Series Drill Bit is an essential tool for professional machinists and serious hobbyists who require deep-hole drilling precision in a variety of materials. It offers exceptional reach and structural integrity for demanding tasks, though its increased length requires careful handling to prevent bit deflection or snapping when starting a hole.

All features

Model Part NumberA1105/32
BrandDORMER

Extended Product Information

FAQs

What is the primary material composition of the Dormer A110?

The Dormer A110 is constructed from High-Speed Steel (HSS), designed for durability and heat resistance.

Can I use this bit in a handheld power drill?

Yes, this bit is designed for both hand-held drills and machine-mounted drilling applications.

What are the key manufacturing standards for this drill bit?

This product meets DIN 340RN, BS328, and ISO 494 standards.

What should I do if the bit binds in the hole?

Stop drilling immediately, back the bit out to clear chips, and ensure you are using enough lubricant.

Is this bit suitable for drilling masonry or concrete?

No, this bit is designed for metal and similar materials. It is not intended for abrasive masonry applications.

Troubleshooting

Bit wandering or walking when starting the hole

Use a center punch to create a divot or drill a smaller pilot hole first to guide the bit tip.

Excessive vibration during operation

Check that the bit is fully seated and centered in the chuck and ensure the workpiece is firmly clamped.

Bit getting hot or smoking

Apply cutting fluid regularly to manage heat and reduce friction during the drilling process.

Pros and Cons

Pros

  • Superior reach for deep-hole applications
  • Manufactured to internationally recognized industrial standards
  • High-quality HSS construction ensures durability
  • Suitable for a wide variety of material types
  • Versatile for both hand and machine tool compatibility

Cons

  • Longer bits are more prone to bending or deflection if not started properly
  • Requires slower feed rates compared to stub drills to prevent breakage
  • Not intended for heavy-duty masonry or hardened tool steel

Setup, Compatibility & Care

To ensure maximum longevity, store the A110 bit in a dry, organized drill index to prevent the tip from dulling against other tools. When setting up, use cutting oil to reduce friction and heat buildup during deep-hole drilling, which is critical for preserving the temper of the steel. If using in a hand drill, ensure the chuck is tightened evenly around the shank to prevent runout. Periodically inspect the flutes for chip buildup; clearing debris frequently is necessary for deep drilling to prevent the bit from binding or snapping in the material.

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