Long-necked Drill Bit
The Problem You're Facing
Deep holes. You bolt extension rods together, and power leaks out at every joint. Bit wobbles. Hole drifts. Sometimes the connection just disconnects middrill and you're fishing for it.
Long-neck fixes this. One solid piece from shank to tip.
Jining Dongtai Lite Engineering Machinery Co., Ltd. is one of the leading manufacturers and suppliers of long-necked drill bit in China. With abundant experience, we warmly welcome you to buy customized long-necked drill bit made in China here from our factory. Good service and quality products are available.
What We Make
Tungsten carbide teeth. Spiral flutes that clear rock debris fast. One piece, no joints. Built for granite, basalt, quartzite-rock rated f=8 to f=18 hardness.
Heavier than a standard bit with extension rod, but you get a straighter hole and faster drilling in return.
Why It Actually Works
No joint energy loss.
Extension rods lose power where they bolt together. Long-neck is one piece. All your rig's power goes into cutting.
Straighter holes.
No wobble at connection points. Borehole stays vertical.
Faster drilling.
Debris clears quick. Bit doesn't jam. You can push harder.
No disconnection risk.
Joint doesn't separate midhole.
Saves you from pulling everything back up.
Custom Bits-That's What We're Actually Good At
Standard bits don't fit every job.
Weird cutting angles or hybrid insert layout? We design it. Multistage step bit? Done.
Ultrahard rock or corrosive ground? Tell us what you're drilling. We adjust carbide grade and geometry.
Got a worn sample or CAD file? Send it. We reverseengineer it, improve it, build you a better version.
Need to test before ordering 1,000? We do small batches. 5 units for field testing. Once it works, scale up.
Timeline: Standard custom bits, 1015 days. Prototypes faster if you're flexible.
Real Questions
Q: Why not just use extension rods?
A: Joints lose power. Bits wobble. Holes drift. Longneck is solid-straighter holes, faster drilling, less risk of disconnection.
Q: What rock hardness do these work in?
A: f=8 to f=18. Granite, basalt, quartzite. We recommend specific carbide grades based on your geology report.
Q: Can you customize based on my drawings or a worn sample?
A: Yeah. Send CAD files, technical specs, or even a used bit. We reverseengineer it and make an improved version.
Q: Do you do small batches for testing?
A: Yes. Prototype a few units, test onsite, then scale production once it works.
Q: Will these fit my rig?
A: Hexagonal, threaded, or splined connections. We follow international standards. Long-necked drill bit works with Atlas Copco, Sandvik, Epiroc, and other major brands.
Q: How long for a custom bit?
A: 1015 days for standard custom work. Depends on complexity.
Q: What if I need just a few units?
A: No problem. We're flexible on R&D projects. Small batches are fine.
Who Should Buy
Contractors drilling deep holes in hard rock. Anyone tired of extension rods disconnecting or drifting boreholes. Operations where straighter holes matter.
If you're drilling shallow soft ground, standard bits work fine. If you're going deep into granite or basalt, longneck saves you money and headaches.
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