STUD-40: Spiradrill Topdrive Utility Drill

Excavator-Mounted. Low-Profile. Built for Versatility.

The STUD-40 is Spiradrill’s excavator-mounted drilling rig engineered for tight access and low-clearance environments. With the ability to reach up to 60 feet in depth and drill up to 72-inch diameter bores, it combines power and flexibility for utility and infrastructure projects in confined spaces. Designed for ease of operation and quick setup, the STUD excels in challenging conditions — easily reaching over obstacles and operating under overhead lines or existing structures.

View specs and configurations

MAX PILE DEPTH:

40’

MAX PILE DIAMETER:

6’

ROTARY TORQUE:

40,000 lbs

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Why Choose the STUD-40?

The STUD-40 is built for crews who need serious drilling power in spaces where traditional rigs can’t go. Whether you’re working under overhead lines or reaching over barriers, this topdrive utility drill delivers the performance, flexibility, and ease-of-use needed for complex utility and infrastructure jobs.

Excavator-Mounted Versatility
Reach over obstacles up to 16 feet away with stable, flexible positioning.
Low Clearance Access
Drill confidently under power lines, bridges, and tight overhead structures.
Fast Setup and Operation
Arrives ready to drill with user-friendly controls for quick starts.
Big Performance in Small Spaces
Drills up to 40 feet deep with bore diameters up to 72 inches.
Built for Demanding Conditions
Engineered to handle tough ground and complex site layouts with confidence.

Not sure which rig configuration fits your needs?

Check out our product filter to explore options by drill depth, diameter, RPM, and more — and find the rig that’s right for your next job.

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STUD-40 Specs

Exact specs vary by configuration. Contact us to discuss your specific needs.

Spec	Details
Rotary Torque	40,000 lbs
Max Pile Depth	40′
Max Pile Diameter	6′
Max RPM (Low)	18 RPM
Max RPM (Mid)	48 RPM
Spin Off Speed	125 RPM
Crowd	24,000 lbs
Main Winch	18,000 lbs
Aux Winch	8,000 lbs
Fuel Tank	50 gallons
Engine	CAT/VOLVO

Click to enlarge.

STUD-40 Configurations

Drill Depth	Working Height	Kelly Bar Round	Kelly Bar Square	# of Stages
40′	25′	X	Not Available	5

Accessories and Add-ons

All STUD-40 rigs can be outfitted with:

Auxiliary winch
Pro heat
Enclosed cab
Toolboxes and lighting
Telemetry package for remote monitoring
Outrigger pad storage
Water tank, and more

Our Parts and Service Promise

When you invest in a STUD-40, you’re not just getting a rig — you’re getting a long-term partner. Our Parts & Service Promise means we’re committed to keeping you up and running with responsive support, dependable inventory, and real people who know your equipment inside and out.

Thousands of parts stocked and ready to ship from our Texas facility
Expert support available Monday–Friday, from people who built your rig
Fast answers and real help, whether you’re troubleshooting in the field or planning routine maintenance
On-site training and support available with every build

We build our rigs to last — and we stand behind them every step of the way.

STUD-40 Common Applications

The STUD-40 is purpose-built for utility and infrastructure drilling in hard-to-access environments. Its excavator-mounted design, low operational height, and extended reach make it ideal for projects where space and clearance are limited — without sacrificing depth or power.

Drilling Under Existing Infrastructure

Ideal for drilling under bridges, canopies, or power lines, the STUD-40 offers powerful performance in low-clearance conditions — making it a reliable choice for infrastructure upgrades and retrofits.

Utility Pole and Substation Installation

The STUD-40 excels in utility drilling applications, especially when setting poles near existing lines or structures. Its low-profile design makes it perfect for substation work and overhead-restricted jobsites.

Streetlight and Signal Pole Foundations

With its ability to drill deep and wide in tight urban environments, the STUD-40 is a go-to solution for streetlight and signal pole installations where space and access are limited.

Ready for a drilling rig you can depend on?

Let’s build the STUD-40 that fits your toughest jobs. Connect with our team today and discover why crews rely on the STUD-40 for precision drilling in tight, hard-to-reach spaces.

Request a quote today

Spiradrill, Inc.
112 FM 153
Smithville, TX 78957-9631

Local: (512) 237-4140
Toll Free: (800) 380-0133

STUD-40: Spiradrill Topdrive Utility Drill

Excavator-Mounted. Low-Profile. Built for Versatility.

40’

6’

40,000 lbs

Why Choose the STUD-40?

Excavator-Mounted Versatility

Low Clearance Access

Fast Setup and Operation

Big Performance in Small Spaces

Built for Demanding Conditions