The Original
R Series

Unstoppable Power for the Hardest Formations

The Dynamic Downhole Original R Series is built to chew through the toughest rock with speed, control, and relentless efficiency. Its advanced cutting geometry, reinforced body, and precision-balanced design deliver faster cutting, smoother passes, and longer tool life—even in the most punishing ground conditions.

Featuring a proprietary bearing system, secure cone retention, and field-replaceable cutters, the Original R Series minimizes downtime and maximizes productivity. Swap worn cutters, change sizes for different passes, or convert from MT to TCI right in the field. And like every Dynamic Downhole tool, it’s manufactured completely in-house in America—ensuring unmatched quality from start to finish.

Tool Highlights

  • Proprietary Bearing Design
  • Highest Weight On “Bit” Capacity
  • With Two Points Of Contact You’ll Never Lose A Cone
  • Field-replaceable Cutters

Robust Single-Body Design

Built from a solid, single-piece body, the DD Viper is engineered to withstand extreme torque and impact in the toughest rock. Fewer failure points mean greater strength, longer life, and confidence on every pass.

Made In-House. Made in America.

Dynamic Downhole is the only HDD supplier that designs, machines, and assembles every product in-house, in the USA—from start to finish.

QUALITY CONTROL: BUILT TO BE A WORKHORSE

Every downhole tool we build is the result of disciplined processes, constant checks, and hands-on accountability. Our manufacturing is monitored, measured, and reviewed regularly to ensure every component meets our exacting standards before it ever reaches the field.

Engineered Without Compromise

From cutter sizes to tool dimensions, every spec is built to handle extreme loads and demanding formations.

The Original R Series V4 to V48 Sizing

Body

# of Cutters

Min Pilot Hole

Connection (Box x Box)

Body Weight W/out Cutters

Length

A*

B*

C*

D*

E*

F*

R4
3
4 1/2"
2 7/8" IF BOX x 2 7/8" IF BOX
135 lbs.
42"
8 1/2"
10"
12"
R6
3
6"
3 1/2" IF BOX x 3 1/2" IF BOX
346 lbs.
52"
12"
14"
16"
18"
20"
R6-20
5
20"
4 1/2" IF BOX x 4 1/2" IF BOX
1565 lbs.
62"
24"
26"
28"
30"
32"
R8
3
8 1/2"
4 1/2" IF BOX x 4 1/2" IF BOX
730 lbs.
65"
16"
18"
20"
22"
24"
26"
R17
3,4
17 1/2"
7 5/8" IF BOX x 7 5/8" IF BOX
1915 lbs.
65"
24"
26"
28"
30"
32"
34"
R26
3,5
26"
7 5/8" IF BOX x 7 5/8" IF BOX
2669 lbs.
65"
32"
34"
36"
38"
40"
42"
R36
3,5
36"
7 5/8" IF BOX x 7 5/8" IF BOX
2569 lbs.
65"
42"
44"
46"
48"
50"
52"
R42
4,5,7
42"
7 5/8" IF BOX x 7 5/8" IF BOX
4566 lbs.
65"
48"
50"
52"
54"
56"
58"
R48
4,5,7
48"
7 5/8" IF BOX x 7 5/8" IF BOX
5994 lbs.
65"
54"
56"
58"
60"
62"
64"

* Opening Range

Get the Right Tool for the Job

Talk with our experts to dial in the right Viper setup for your formations, cutter sizes, and drilling goals.

Contact Us