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Description
📘 Overview
The Blue Diamond Rock Auger Bits are rock auger bits skid steer operators use to bore through rock, shale, frost, and the hardest ground. Each bit mounts to a 2″ hex auger-drive interface that fits standard auger drives, and this listing offers diameters from 4″ to 36″ with aggressive carbide-style rock teeth built to chew through material that stops dirt bits cold.
This listing covers the rock auger bits in nine diameters, from a 4″ bit (#105305) up to a 36″ bit (#105360). Purpose-built for hard ground, they carry rock-specific teeth and heavier construction, and Blue Diamond offers matching rock tooth kits so you refresh the cutting edges as they wear from abrasive rock and rubble.
As rock auger bits skid steer machines drive, they dig where dirt bits fail. Blue diamond rock auger bits bore rock, shale, and frost; as carbide auger bits skid steer operators trust in abrasive ground, the rock teeth hold up. For hard ground auger bits that keep cutting, these rock bits plus a fresh rock tooth kit tackle the toughest holes.
The 4″–36″ diameter range, 2″ hex drive, aggressive rock teeth, heavy construction, and replaceable rock tooth kits make these the tools for drilling hard ground.
⚙ Rock Auger Bit Features
- Diameters from 4″ to 36″
- 2″ hex drive fits standard auger drives
- Aggressive rock/carbide-style cutting teeth
- Heavier construction for hard ground
- Replaceable rock tooth kits available
- Built for rock, shale, frost, and compacted ground
🔑 Why Choose the Blue Diamond Rock Auger Bits
- Digs where dirt bits fail — the aggressive rock teeth and heavy build bore rock, shale, frost, and rubble that stop standard dirt bits.
- Purpose-built for hard ground — everything from the tooth geometry to the construction is designed for abrasive, unforgiving material.
- Full size range — nine diameters from 4″ to 36″ cover post holes through large footings in rocky ground.
- Standard 2″ hex drive — fits Blue Diamond and other common auger drives, so they work with the drive you already run.
- Replaceable rock teeth — matching rock tooth kits refresh the cutting edges as abrasive ground wears them, extending bit life.
🔄 Rock Auger Bits Skid Steer Variant Specifications
| Part Number | Diameter | Weight |
|---|---|---|
| 105305 | 4” DIAMETER, ROCK | 70 lbs |
| 105310 | 6” DIAMETER, ROCK | 66 lbs |
| 105320 | 9” DIAMETER, ROCK | 102 lbs |
| 105330 | 12” DIAMETER, ROCK | 134 lbs |
| 105340 | 16” DIAMETER | 203 lbs |
| 105345 | 18” DIAMETER, ROCK | 201 lbs |
| 105350 | 24” DIAMETER, ROCK | 291 lbs |
| 105355 | 30” DIAMETER, ROCK | 340 lbs |
| 105360 | 36” DIAMETER, ROCK | 395 lbs |
🔗 Attachment Compatibility
These rock bits fit any auger drive with a matching 2″ hex output shaft. Rock tooth kits bolt onto the bit heads and are sold separately as wear parts for abrasive ground.
🚜 Machine Compatibility
Drives Blue Diamond and compatible auger bits via a 2″ hex output shaft. Mounts to skid steers, mini skid steers, and excavators equipped with the matching carrier:
Skid Steer Universal QA
Mini Quick-Attach
Excavator Coupler
2″ Hex Bit Drive
Compatibility is determined by mount type and hydraulic flow, not brand — confirm your machine's mount and flow before ordering. Not sure it fits your machine? Contact eskidsteer.com at (866) 757-8337.
❓ Frequently Asked Questions
Q: What makes a rock auger bit different from a dirt bit?
Rock bits use aggressive rock/carbide-style teeth and heavier construction designed to break and cut hard material — rock, shale, frost, and compacted rubble — that would quickly destroy standard dirt teeth. A heavy-duty or cast-head dirt bit is faster and cheaper in normal soil; a rock bit is what you need when the ground is genuinely hard.
Q: What kind of ground can these handle?
They're built for rock, shale, frost-hardened ground, caliche, and rocky/compacted soils. In soft dirt they'll work but are overkill; reserve them for the hard ground where dirt bits stall or wear out fast.
Q: Do I need a special auger drive?
You need a high-torque auger drive and a capable machine — rock digging demands far more torque than dirt. The bits fit standard 2″ hex drives, but the drive and machine must supply the power to turn a rock bit through hard material. Contact us with your machine details and we'll help confirm.
Q: Can I replace the rock teeth?
Yes — Blue Diamond offers rock tooth kits sized to these bits. Since rock is abrasive and wears teeth faster than soil, replaceable rock teeth let you refresh the cutting edges and keep the bit boring without replacing the whole auger.
Q: How is shipping calculated?
Shipping is calculated at checkout — add the item to your cart, enter your delivery address, and the shipping charge is displayed before you complete your order. Lift gate service is available for residential deliveries and can be selected at checkout.
Q: How do I order?
Add the item to your cart directly on eskidsteer.com and complete checkout online. Have your auger drive's shaft size and torque rating ready to confirm fitment before ordering. If you have a fitment question before purchasing, call us at (866) 757-8337.
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Shipping
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Phone: +1 8667578337
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Address: 30 North Gould St Suite R, Sheridan, WY 82801, USA
Returns
Returns
We offer returns and exchanges in limited circumstances as follows:
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- To be eligible for a return, you must commence the return process within 30 days of your item being delivered to you and:
- it must be unused, for example, once an item is hooked up to an attachment plate, hydraulic lines or electrical connection, it will not be eligible for return. Likewise, if your item shows any sign of use, which we may determine in our sole and absolute discretion, we will not accept the return;
- it must be in the same condition you received it in. You will be required to send us timestamped photos of the condition of your items as a condition to determine your eligibility for the return or exchange; and
- it must be returned in the same packaging or containers as it was received in.
We do not accept returns for products that were listed as final sale items at the time of purchase.
You agree to pay a 25% restocking fee on all returns, which we will deduct from any refund owing to you.
After the above referenced 30-day period, unfortunately we cannot offer you a refund or exchange, under any circumstances.
If your return or exchange is approved, we will provide instructions on shipping your items back to us or the applicable supplier via email.
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Our shipping cost to you is not refundable.
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