Rock Auger

Jeffrey Machine offers versatility in auger operations. In fact, we have a lot for you to discover, such as our rock auger. Our rock auger caters to the most demanding projects, ensuring you’re satisfied at the end of the day. 

Each rock auger has diameters ranging from 16” to 144” and offers cutting options like DC/DF, DC/SF, SC/SF, and TC/TF. These precision-cut customizations extend to our Kelly boxes, tailored to meet your specific requirements. Our rock auger provides unmatched performance. Elevate your projects with an auger for rock drilling from Jeffrey Machine.

Commonly Requested Diameters: 16” – 144” *

Cut: DC/DF, DC/SF, SC/SF, TC/TF

Kelly boxes: All boxes made to customer specifications

Center Shaft: 4” OD -12” OD

Solid shaft available in some sizes

Flight: 1″ – 2″ thickness available

All flight ID is beveled for better weld penetration

Laminate flight on all augers 30”

or larger

Wear Protection: Wear Pads

2″ x 3″ x ½” (39302)

*Smaller diameters available based on Kelly box size / custom sizes greater than 144”

Wear Items

.990 Rock Series Wear Parts:

.990 Standard (30122)

.990 Dragon’s Tooth® (30145)

.990 Tri-holder (32042)

.990 Pilot 2½” Square (40205)

38mm Rock Series Wear Parts:

B47K19LK80-H (30182)

38mm Dragon’s Tooth (30188)

38mm Tri-holder* (32064)

RP-4 Machined Pilot (40285)

*All .990 and 38mm rock augers are manufactured with Tri-holders.

**Smaller conical teeth available upon request.