Take on average soil conditions with way, way above-average HammerHead Mole® Replaceable Head (non-reciprocating) pneumatic piercing tools. These low-maintenance tools have fewer moving parts and fewer wear items, minimizing your downtime, and work fast in soft ground conditions. Whether you're boring under a sidewalk to install coaxial cable, or under a highway to get natural gas service from the main to a new customer, HammerHead Mole Replaceable Head piercing tools deliver the productivity and reliability you need.

KEY FEATURES

DETAILS

LITERATURE

KEY FEATURES, REPLACEABLE HEAD

HammerHead Mole strikers are milled from a solid piece of steel and are much heavier than competitive models, resulting in increased impact force and greater overall durability.
Solid, one-piece striker features wear rings that eliminate metal-to-metal contact, decrease wear and help sustain a high level of performance.
Low operating cost per foot of installation, relatively low purchase price, minimal maintenance and minimal training time required for operation add up to the lowest cost of ownership in the industry.

DETAILS, REPLACEABLE HEAD

Exclusive, clamped rear anvil is designed for fast, easy field maintenance, provides up to 200 percent more clamp load, and is the most secure assembly on the market.
With a clamped rear anvil that is 200 percent stronger than any competitor's design, the tool can run at an industry-best 110 psi (7.6 bar), for greater boring power.
Available Power Port® quarter-turn reverse system is the only reverse mechanism that fully locks into gear during operation to prevent accidental direction change during the bore.
As opposed to competitors' rigid valve designs, the HammerHead Mole's valve is designed to be flexible to prevent tool binding during operation.

External whip can be easily replaced in the field, minimizing downtime.
Optional screw reverse offers flexible control of the tool and features a neutral position for easy locating.
Replaceable Head piercing tools are designed for a wide range of soils and bore sizes, with models from 2" (50 mm) to 8" (200 mm) in diameter.

LITERATURE, Replaceable Head

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ENGLISH

2.00" (50 MM)

2.50" (67 MM)

3.00" (75 MM)

4.00" (98 MM)

5.125" (130 MM)

5.50" (140 MM)

5.75" (145 MM)

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

2.00" (50 MM) REPLACEABLE HEAD WITH POWER PORT® REVERSE
Part number Model (SAE): 20622
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

2.00" (50 MM) REPLACEABLE HEAD WITH POWER PORT® REVERSE (BOLTLESS)
Part number Model (SAE): 21733
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

2.00" (50 MM) REPLACEABLE HEAD WITH SCREW REVERSE
Part number Model (SAE): 20222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

2 in
39 in
110 psi
24 lbs
2 in
75 ft
1 x 3 ft
515
air
18 cfm
4
1/4 turn
yes
no
no

U.S.

2 in
40.9 in
110 psi
24 lbs
2 in
75 ft
1 x 3 ft
515
air
18 cfm
n/a
1/4 turn
yes
no
no

U.S.

2 in
45.3 in
110 psi
28 lbs
2 in
75 ft
1 x 3 ft
470
air
22 cfm
4
8 turns
yes
no
no

METRIC

50 mm
99.1 mm
7.6 bar
10.9 kg
50.8 mm
23 m
0.3 x 0.9 m

510 L/min

METRIC

50 mm
103.8 mm
7.6 bar
10.9 kg
50.8 mm
23 m
0.3 x 0.9 m

510 L/min

METRIC

50 mm
115 mm
7.6 bar
12.7 kg
50.8 mm
23 m
0.3 x 0.9 m

623 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

2.50" (67 MM) REPLACEABLE HEAD WITH POWER
PORT® REVERSE
Part number Model (SAE): 25122
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

2.64 in
48.3 in
110 psi
50 lbs
2.5 in
100 ft
2 x 4 ft
385
air
31 cfm
4
1/4 turn
yes
no
no

METRIC

67 mm
122.6 mm
7.6 bar
22.7 kg
63.5 mm
30 m
0.6 x 1.2 m

878 L/min

2.50" (67 MM) REPLACEABLE HEAD WITH
SCREW REVERSE
Part number Model (SAE): 25222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

2.64 in
48.3 in
110 psi
50 lbs
2.5 in
100 ft
2 x 4 ft
385
air
31 cfm
4
6 turns
yes
no
no

METRIC

67 mm
122.6 mm
7.6 bar
22.7 kg
63.5 mm
30 m
0.6 x 1.2 m

878 L/min

2.50" (67 MM) REPLACEABLE HEAD WITH SCREW REVERSE (SIDEWALKER® SERIES)
Part number Model (SAE): 25622
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

2.64 in
33.5 in
110 psi
32 lbs
2.5 in
75 ft
2 x 3 ft
720
air
35 cfm
4
5 turns
yes
no
no

METRIC

67 mm
85.1 mm
7.6 bar
14.5 kg
63.5 mm
23 m
0.6 x 0.9 m

991 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

3.00" (75 MM) REPLACEABLE HEAD WITH POWER
PORT® REVERSE
Part number Model (SAE): 30722
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

3.00" (75 MM) REPLACEABLE HEAD WITH SCREW REVERSE
Part number Model (SAE): 30222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

3.00" (75 MM) REPLACEABLE HEAD WITH SCREW
REVERSE (SIDEWALKER® SERIES) (BULBED)
Part number Model (SAE): 25822
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

3 in
51.7 in
110 psi
67 lbs
3 in
150 ft
2 x 5 ft
370
air
35 cfm
4
1/4 turns
yes
no
no

U.S.
3 in
52.2 in
110 psi
67 lbs
3 in
150 ft
2 x 5 ft
370
air
32 cfm
4
5 turns
yes
no
no

U.S.

3 in
33.5 in
110 psi
35 lbs
3 in
75 ft
2 x 3 ft
720
air
35 cfm
4
5 turns
yes
no
no

METRIC

75 mm
131.3 mm
76 bar
30.4 kg
76.2 mm
46 m
0.6 x 1.5 m

991 L/min

METRIC

75 mm
132.5 mm
7.6 bar
30.4 kg
76.2 mm
46 m
0.6 x 1.5 m

906 L/min

METRIC

75 mm
85.1 mm
7.6 bar
15.9 kg
76.2 mm
23 m
0.6 x 0.9 m

991 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

4.00" (98 MM) REPLACEABLE HEAD WITH SCREW
REVERSE (3 7/8")
Part number Model (SAE): 38222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

3.88 in
64 in
110 psi
136 lbs
3.88 in
150 ft
2 x 6 ft
370
air
68 cfm
6
7 turns
yes
yes
no

METRIC

98 mm
162.4 mm
7.6 bar
61.7 kg
98.43 mm
46 m
0.6 x 1.8 m

1926 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

5.125" (130 MM) WITH SCREW REVERSE
Part number Model (SAE): 51222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

5.13 in
65.9 in
110 psi
214 lbs
5.13 in
150 ft
2 x 6 ft
333
air
98 cfm
8
7 turns
yes
yes
yes

METRIC

130 mm
167.4 mm
7.6 bar
97.1 kg
130.18 mm
46 m
0.6 x 1.8 m

2775 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

5.50" (140 MM) REPLACEABLE HEAD WITH SCREW REVERSE (BULBED)
Part number Model (SAE): 58222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.

5.5 in
64 in
110 psi
170 lbs
5.5 in
150 ft
2 x 6 ft
370
air
68 cfm
6
7 turns
yes
yes
no

METRIC

140 mm
162.4 mm
7.6 bar
77.1 kg
139.7 mm
46 m
0.6 x 1.8 m

1926 L/min

SPECIFICATIONS, REPLACEABLE HEAD

PRINT

5.75" (145 MM) SCREW REVERSE
Part number Model (SAE): 60222
Tool diameter
Length
Pressure
Weight
Boring diameter range
Maximum bore length
Size pit
Cycles/minute
Type drive
Air
Tailbolt access
Reverse
Boring
Pipe ramming
Pipe bursting

U.S.
5.75 in
79.5 in
110 psi
305 lbs
5.75 in
150 ft
2 x 8 ft
300
air
132 cfm
8
9 turns
yes
yes
yes

METRIC
145 mm SR
145 mm
201.9 mm
7.6 bar
138.3 kg
146.05 mm
46 m
0.6 x 2.4 m

3738 L/min