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Model 137 and 155 are 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 an APT valve, wet tube and swivel assembly.
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| APT 137 Rock Drill | 5225 | $1,445.00  |
| Chuck Size (in) | 7/8 x 4-1/4 | |
| Bore (in) | 2-3/8 | |
| Stroke (in) | 2-5/8 | |
| Impact Rate (bpm) | 2300 | |
| Air Consumption (cfm) | 85-90 | |
| Weight (lbs) | 38 | |
| Length (in) | 19-3/4 | |
| Air Inlet (NPT) | 1/2 Male | |
| CONSUMABLES | ||
| Whirlibits | ||
| DOCUMENTATION | ||
| Spare Parts List | ||
| Maintenance and Repair Information | ||
| COMMON REPLACEABLE PARTS | ||
| Water Valve for Wet Head | 2116 | $84.18 |
| Swivel Assembly for Wet Head (incl. swivel, o-ring, nut and ring) | 3389 | $87.61 |
| Retainer - 7/8 x 3-1/4 | 2397 | $221.11 |
| Retainer - 7/8 & 1 x 4-1/4 | 2598 | $225.13 |
| Bolt | 2398 | $117.55 |
| Plunger | 2399 | $85.52 |
| Nut | 2402 | $21.16 |