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Description
🛡️5-year warranty
📘 Overview
The Blue Diamond Extreme Duty Series 2 Excavator Auger Drive is a high-torque excavator auger drive for drilling post holes, footings, and planting holes with an excavator or mini excavator. It pairs a compact high-torque gearbox with a two-piece shaft for side-load strength, and mounts to excavator and skid steer interfaces.
This listing covers the full model range, from the EX1 (8–11 GPM) up to high-flow models, so you match the drive to your machine's hydraulic flow. Lower-flow models suit compact excavators; high-flow models deliver more torque for larger bits and harder ground.
As a blue diamond excavator auger drive, it's built for daily commercial drilling and backed by a 5-year gearbox and 3-year motor warranty. This excavator auger series 2 works across machine sizes; a mini excavator auger drive configuration suits compact carriers, while the EX7HF excavator auger tops the range for maximum torque. A telescopic mount is available to let the gearbox go down the hole for deeper drilling.
The two-piece shaft resists side loads, and the compact gearbox keeps weight down while delivering high torque. It operates at up to 3,000 PSI. Confirm the correct mount for your excavator model.
⚙ Excavator Auger Drive Features
- Compact high-torque manufactured gearbox
- 2-piece shaft design for maximum side-load strength
- 5-year gearbox warranty, 3-year motor warranty
- Universal mount with welded hitch
- Telescopic mount available for deeper drilling
🔑 Why Choose the Blue Diamond Excavator Auger Drive
- Matched to your excavator's flow — models from 8–11 GPM up to high-flow deliver the right torque for your machine, so you drill efficiently without stalling.
- 5-year gearbox warranty — the compact high-torque gearbox is backed for five years, reflecting extreme-duty durability.
- Two-piece shaft resists side loads — handles the side loading that snaps single-piece shafts when a bit binds in rocky or hard ground.
- Telescopic mount reaches deeper — the optional telescopic mount lets the gearbox travel down the hole to maximize drilling depth.
- Fits excavators and mini excavators — the model range and mounting options cover compact carriers through larger machines.
📊 Excavator Auger Drive Specifications
| Part Number | Model / Flow | Weight |
|---|---|---|
| 305705-EX | EX1 W/2" Shaft (8-11 GPM) | 260 lbs |
| 305708-EX | EX2 W/2" Shaft (12-16 GPM) | 277 lbs |
| 305712-EX | EX3 W/2" Shaft (17-20 GPM) | 367 lbs |
| 305715-EX | EX4 W/2" Shaft (19-23 GPM) | 280 lbs |
| 305720-EX | EX4HF W/2" Shaft (21-26 GPM) | 337 lbs |
| 305725-EX | EX5HF W/2 1/2" Shaft (21-26 GPM) | 462 lbs |
| 305728-EX | EX6HF W/2 1/2" Shaft (29-32 GPM) | 477 lbs |
| 305730-EX | EX7HF W/2 1/2" Shaft (33-36 GPM) | 488 lbs |
📋 Excavator Auger Drive Variant Options
- 305705-EX — EX1 W/2" Shaft (8-11 GPM)
- 305708-EX — EX2 W/2" Shaft (12-16 GPM)
- 305712-EX — EX3 W/2" Shaft (17-20 GPM)
- 305715-EX — EX4 W/2" Shaft (19-23 GPM)
- 305720-EX — EX4HF W/2" Shaft (21-26 GPM)
- 305725-EX — EX5HF W/2 1/2" Shaft (21-26 GPM) (special order)
- 305728-EX — EX6HF W/2 1/2" Shaft (29-32 GPM) (special order)
- 305730-EX — EX7HF W/2 1/2" Shaft (33-36 GPM) (special order)
🔗 Attachment Compatibility
This drive accepts Blue Diamond and compatible auger bits via its 2″ hex output shaft. Heavy-duty, cast-head, rock, and tree bits (and their tooth kits) all fit the 2″ hex interface and are sold separately.
🚜 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. The critical match is hydraulic flow — each model states its GPM range, from 8–11 GPM to high-flow — and operating pressure is up to 3,000 PSI. Not sure it fits your machine? Contact eskidsteer.com at (866) 757-8337.
❓ Frequently Asked Questions
Q: Which auger drive model do I need for my excavator?
Match the model to your machine's rated hydraulic flow — the EX1 for 8–11 GPM up through high-flow models for 21–26 GPM machines. Confirm your excavator's auxiliary flow, then choose the model built for it. Running the matched model delivers full drilling torque.
Q: Will it fit my mini excavator?
Yes — lower-flow models suit mini excavators, and the drive mounts with the correct bracket for your machine's coupler. Have your excavator make and model ready so we can confirm the right mount and flow match.
Q: What warranty comes with it?
The gearbox carries a 5-year warranty and the motor a 3-year warranty, reflecting the extreme-duty build.
Q: What does the telescopic mount do?
The optional telescopic mount lets the gearbox travel down into the hole while drilling, maximizing depth beyond a fixed mount — useful for deep footings and posts.
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 machine make, model, and serial number ready to confirm fitment before ordering. If you have a fitment question before purchasing, call us at (866) 757-8337.
📥 Downloads
🎥 Videos
Watch the Blue Diamond Extreme Duty Excavator Auger Drive in action
Shipping
The following are estimated processing and delivery times. We make every effort to fulfill orders as quickly as possible.
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Delivery Time= Handling time +Transit Time:
Handling time: 3-3 Days
Transit time: 5-8Days
Order cut off Time: 5:00 PM (GMT-05:00) Eastern Standard Time (New York)
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Phone: +1 8667578337
Email: support@eSkidsteer.com
Address: 30 North Gould St Suite R, Sheridan, WY 82801, USA
Returns
Returns
We offer returns and exchanges in limited circumstances as follows:
- In order to submit a return, you must contact us by email at support@eSkidsteer.com for us to confirm the items ordered are eligible for return or exchange;
- 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.
You agree that you shall be responsible for all return shipping costs and related expenses.
Our shipping cost to you is not refundable.
You are also responsible for ensuring the items are carefully packaged for shipment and that risk of loss or damage during return shipping shall be your sole liability. You may wish to obtain insurance while the returned items are in transit.
Lost or Damaged
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In the event the item is lost or damaged on arrival, we will assist you with filing a reimbursement claim directly with the applicable supplier or shipping company as applicable. However, you agree that as we are not the direct supplier of the items, it shall be your responsibility to pursue any claims with the applicable supplier in the event your lost or damaged item is not replaced by the supplier or carrier.
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Warranties Offered by Third Parties
Our third party suppliers and manufacturers may offer limited warranties on certain products sold on the Website. You may contact us and we can refer you to the applicable supplier or manufacturer if you wish to inquire about the details of any such warranties offered by those third parties. You agree that we shall not be liable or responsible for any warranties granted by such third parties.
To the extent products you order from us have warranties provided by a third party supplier or manufacturer, upon your request we agree to reasonably assist with the submission of warranty claims to such third parties. However, we make no guarantees that any warranty claims will be successful. You agree it is your responsibility to ensure warranty claims are submitted within the applicable timeframe to the applicable supplier or manufacturer.
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