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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 |
| 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 |
"H" Thread Rock Bit |
|||||
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
| 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 |
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
|
1" Rope/R25/100 Rods 
|
"Z" Series Rock Bit |
"Z" Series Rock Bit |
|||||
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
| 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 |
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
|
Replaceable Tip Taper Rods 
|
"TC" TAPER Rock Bit |
"TB" TAPER Rock Bit |
|||||
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
| 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 |
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||||
|
1 Piece Plug Bits 
|
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| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||
| 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 |
| Longer Lengths Available for Most Tools - Call: 800‐241‐9669 | |||||
155 Series Safety Manual
Coming soon! Please call for additional pictures available for this tool.
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