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American Pneumatic
Model: 155 Series
Rock Drill

Model 155 is used in general construction, utility work, and plant maintenance. They are designed for drilling through granite, hard-faced rock, quarry drilling and drilling secondary holes for blasting. They are also used with dowel hole drilling machines. Adaptable to wet drilling application by attaching APT valve, wet tube and swivel assembly.

Model Product Detail Part Number
155 7/8" x 3-1/4" HEX (A) 5229
155 7/8" x 4-1/4" HEX (B) 5231
155 1" x 4-1/4" HEX (C) 5233


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You will also need...

All Shank Sizes 7/8" x 3-1/4"
7/8" x 4-1/4"
1" x 4-1/4"
Bore (inch) 2-5/8
Stroke Length (inch) 3
Impact frequency (blows/min) 2100
Air consumption (cfm) 110-120
Weight (lb) 61
Length (inch) 22-3/8
Air Inlet (inch) 3/4 MNPT

"H" Thread Rods

"H" Thread Rock Bit
Cross Carbide Insert

"H" Thread Rock Bit
Button Carbide Insert

Length Under Collar "AH" Series "BH" Series "CH" Series For broken & rough rock. For fast penetration.
7/8" x 3-1/4"
Shank
7/8" x 4-1/4"
Shank
1" x 4-1/4"
Shank
BITS SHOWN FIT ALL "H" THREAD RODS
Feet (Inches) Part No. Part No. Part No. Diameter Part No. Diameter Part No.
1' (12") AH-1
BH-1
CH-1
1-1/4"HC-125
1-1/4"HB-125
1'6" (18") AH-1.5
BH-1.5
CH-1.5
1-3/8"HC-138
1-3/8"HB-138
2' (24") AH-2
BH-2
CH-2
1-1/2"HC-150
1-1/2"HB-150
3' (36") AH-3
BH-3
CH-3
1-5/8"HC-158
1-5/8"HB-158
4' (48") AH-4
BH-4
CH-4
1-3/4"HC-175
1-3/4"HB-175
5' (60") AH-5
BH-5
CH-5
1-7/8"HC-178
1-7/8"HB-178
6' (72") AH-6
BH-6
CH-6
2"HC-200
2"HB-200

1" Rope/R25/100 Rods

"Z" Series Rock Bit
Cross Carbide Insert

"Z" Series Rock Bit
Button Carbide Insert

Length Under Collar "AZ" Series "BZ" Series "CZ" Series For broken & rough rock. For fast penetration.
7/8" x 3-1/4"
Shank
7/8" x 4-1/4"
Shank
1" x 4-1/4"
Shank
BITS SHOWN FIT ALL 1" ROPE / R25 / 100 ROPE RODS
Feet (Inches) Part Number Part Number Part Number Diameter Part Number Diameter Part Number
1' (12") AZ-1
BZ-1
CZ-1
1-1/4"ZX-125
1-1/4"ZB-125
1'6" (18") AZ-1.5
BZ-1.5
CZ-1.5
1-3/8"ZX-138
1-3/8"ZB-138
2' (24") AZ-2
BZ-2
CZ-2
1-1/2"ZX-150
1-1/2"ZB-150
3' (36") AZ-3
BZ-3
CZ-3
1-5/8"ZX-158
1-5/8"ZB-158
4' (48") AZ-4
BZ-4
CZ-4
1-3/4"ZX-175
1-3/4"ZB-175
5' (60") AZ-5
BZ-5
CZ-5
1-7/8"ZX-178
1-7/8"ZB-178
6' (72") AZ-6
BZ-6
CZ-6
2"ZX-200
2"ZB-200

Replaceable Tip Taper Rods

"TC" TAPER Rock Bit
Cross Carbide Insert

"TB" TAPER Rock Bit
Button Carbide Insert

Length Under Collar "AT" Series "BT" Series "CT" Series For broken & rough rock. For fast penetration.
7/8" x 3-1/4"
Shank
7/8" x 4-1/4"
Shank
1" x 4-1/4"
Shank
BITS SHOWN FIT ALL TAPER RODS
Feet (Inches) Part Number Part Number Part Number Diameter Part Number Diameter Part Number
1' (12") AT-1
BT-1
CT-1
1-1/4"TC-125
1-1/4"TB-125
1'6" (18") AT-1.5
BT-1.5
CT-1.5
1-3/8"TC-138
1-3/8"TB-138
2' (24") AT-2
BT-2
CT-2
1-1/2"TC-150
1-1/2"TB-150
3' (36") AT-3
BT-3
CT-3
1-5/8"TC-158
1-5/8"TB-158
4' (48") AT-4
BT-4
CT-4
1-3/4"TC-175
1-3/4"TB-175
5' (60") AT-5
BT-5
CT-5
1-7/8"TC-178
1-7/8"TB-178
6' (72") AT-6
BT-6
CT-6
2"TC-200
2"TB-200

1 Piece Plug Bits

Length Under Collar Drill Depth Drill Dia. "A" Series "B" Series "C" Series
Inches Inches Inches 7/8"x3-1/4" 7/8"x4-1/4" 1"x4-1/4"
Part # Part # Part #
9" 6" 5/8" A9-58
B9-58
C9-58
9" 6" 3/4" A9-75
B9-75
C9-75
9" 6" 7/8" A9-78
B9-78
C9-78
9" 6" 1" A9-100
B9-100
C9-100
9" 6" 1-1/8" A9-118
B9-118
C9-118
9" 6" 1-1/4" A9-125
B9-125
C9-125
9" 6" 1-1/2" A9-150
B9-150
C9-150
12" 9" 5/8" A12-58
B12-58
C12-58
12" 9" 3/4" A12-75
B12-75
C12-75
12" 9" 7/8" A12-78
B12-78
C12-78
12" 9" 1" A12-100
B12-100
C12-100
12" 9" 1-1/8" A12-118
B12-118
C12-118
12" 9" 1-1/4" A12-125
B12-125
C12-125
12" 9" 1-1/2" A12-150
B12-150
C12-150
18" 15" 5/8" A18-58
B18-58
C18-58
18" 15" 3/4" A18-75
B18-75
C18-75
18" 15" 7/8" A18-78
B18-78
C18-78
18" 15" 1" A18-100
B18-100
C18-100
18" 15" 1-1/8" A18-118
B18-118
C18-118
18" 15" 1-1/4" A18-125
B18-125
C18-125
18" 15" 1-1/2" A18-150
B18-150
C18-150
24" 21" 5/8" A24-58
B24-58
C24-58
24" 21" 3/4" A24-75
B24-75
C24-75
24" 21" 7/8" A24-78
B24-78
C24-78
24" 21" 1" A24-100
B24-100
C24-100
24" 21" 1-1/8" A24-118
B24-118
C24-118
24" 21" 1-1/4" A24-125
B24-125
C24-125
24" 21" 1-1/2" A24-150
B24-150
C24-150
30" 27" 5/8" A30-58
B30-58
C30-58
30" 27" 3/4" A30-75
B30-75
C30-75
30" 27" 7/8" A30-78
B30-78
C30-78
30" 27" 1" A30-100
B30-100
C30-100
30" 27" 1-1/8" A30-118
B30-118
C30-118
30" 27" 1-1/4" A30-125
B30-125
C30-125
30" 27" 1-1/2" A30-150
B30-150
C30-150
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