When quarry, excavation, or construction crews need sustained percussion for drilling into rock, the Ingersoll Rand JRD50-B Reversible Pawl Air Rock Drill delivers 2,300 blows per minute through a 2" piston stroke and 3" bore. This impact configuration drives compatible drill steel into hard material, while the 7/8" x 4-1/4" hex shank fits tooling made for that exact shank and collar configuration. Reversible pawls control drill-steel rotation and allow the direction to be changed when required during drilling or withdrawal.
The JRD50-B supports wet or dry drilling and is rated for holes up to 2" in diameter and 16 ft deep. An easy-access adjustable three-speed throttle lets the operator vary tool output as rock conditions change, while the integral muffler helps reduce exhaust noise at the drill. Catalog air consumption is 120 CFM at 90 PSI, making adequate compressor output, hose sizing, and air-line capacity essential for maintaining the tool’s rated percussion performance.
Type: Reversible Pawl Air Rock Drill | Model: JRD50-B | Hex Shank Size: 7/8" x 4-1/4" | Stroke: 2" (51 mm) | Bore: 3" (76 mm) | Length Without Accessory: 20.5" (521 mm) | Weight Without Accessory: 51 lb (23 kg) | Maximum Hole Diameter: 2" (51 mm) | Maximum Hole Depth: 16 ft (406 cm) | Blows Per Minute: 2,300 BPM | Air Consumption: 120 CFM | Air Inlet: 3/4" NPT | Recommended Hose Size: 3/4" (19 mm) | Rated Air Pressure: 90 PSI (6.2 bar)
Features:
- Easy-access adjustable three-speed throttle provides selectable control as drilling conditions change.
- Reversible pawls control drill-steel rotation and permit directional operation when required.
- Integral muffler helps reduce exhaust noise generated at the pneumatic tool.
- Supports wet or dry drilling to accommodate different material conditions and jobsite practices.
- 7/8-inch x 4-1/4-inch hex shank accepts matching jack rods and carbide-tipped drill steels.
- 2-inch stroke and 3-inch bore provide repeated percussion for drilling holes up to 2 inches in diameter.
- 2,300 blows per minute maintains steady impact action during rock-drilling work.
Tech Tip: To increase tool performance, extend tool life and lessen repair costs use it with a Filter-Regulator-Lubricator (FRLs)
Applications:
- Quarry and aggregate operations — drilling production, splitting, and utility holes in rock.
- Construction and excavation — penetrating rock encountered during foundation, trenching, grading, and site-preparation work.
- Mining support — completing pneumatic drilling tasks in surface or underground operations.
- Road and infrastructure projects — drilling for anchors, blasting preparation, and controlled rock removal.
- Contract drilling crews — producing wet or dry holes within the tool’s stated diameter and depth limits.
FAQs:
- Q: What shank size does the Ingersoll Rand JRD50-B accept?
A: The JRD50-B uses a 7/8" x 4-1/4" hex shank. Drill steels, jack rods, and related tooling must match both the shank diameter and collar length. - Q: How does the JRD50-B differ from the JRD50-A?
A: The primary catalog-listed difference is the shank configuration. The JRD50-B uses a 7/8" x 4-1/4" hex shank, while the JRD50-A uses a 7/8" x 3-1/4" hex shank; the remaining listed performance specifications are the same. - Q: What air supply is required for the JRD50-B?
A: Ingersoll Rand lists air consumption at 120 CFM with performance figures measured at 90 PSI. The compressor, couplings, and air line must maintain that flow and pressure while the drill is operating. - Q: What size hole can this rock drill produce?
A: The catalog lists a maximum hole diameter of 2 inches and a maximum hole depth of 16 feet. Rock conditions, drill steel, bit selection, air delivery, and operating technique can affect actual drilling results. - Q: Can the JRD50-B be used for wet drilling?
A: Yes. Ingersoll Rand specifies this rock-drill family for wet or dry drilling.
| SKU | HEX SHANK SIZE | STROKE IN (MM) | BORE IN (MM) | LENGTH WITHOUT ACCESSORY IN (MM) | WEIGHT WITHOUT ACCESSORY LB (KG) | MAX HOLE DIAMETER | MAX HOLE DEPTH | BPM | CFM | INLET SIZE NPT IN | RECOMMENDED HOSE SIZE IN (MM) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JRD30-A | 7/8” x 3-1/4” | 1.44” (37) | 2.38” (60) | 19.5” (495) | 29 (13.2) | 1.5” (38) | 10’ (254) | 2,700 | 73 | 3/4” | 3/4” (19) |
| JRD30-B | 7/8” x 4-1/4” | 1.44” (37) | 2.38” (60) | 19.5” (495) | 29 (13.2) | 1.5” (38) | 10’ (254) | 2,700 | 73 | 3/4” | 3/4” (19) |
| JH40C1 | 7/8” x 3-1/4” | 2.63” (67) | 2.5” (63.5) | 22.5” (572) | 61 (27.7) | 2” (51) | 18’ (457) | 2,000 | 115 | 3/4” | 3/4” (19) |
| JH40C2 | 7/8” x 4-1/4” | 2.63” (67) | 2.5” (63.5) | 22.5” (572) | 61 (27.7) | 2” (51) | 18’ (457) | 2,000 | 115 | 3/4” | 3/4” (19) |
| JH40C3 | 1” x 4-1/4” | 2.63” (67) | 2.5” (63.5) | 22.5” (572) | 61 (27.7) | 2” (51) | 18’ (457) | 2,000 | 115 | 3/4” | 3/4” (19) |
| JRD50-A | 7/8” x 3-1/4” | 2” (51) | 3” (76) | 20.5” (521) | 51 (23) | 2” (51) | 16’ (406) | 2,300 | 120 | 3/4” | 3/4” (19) |
| JRD50-B | 7/8” x 4-1/4” | 2” (51) | 3” (76) | 20.5” (521) | 51 (23) | 2” (51) | 16’ (406) | 2,300 | 120 | 3/4” | 3/4” (19) |
| JRD50-C | 1” x 4-1/4” | 2” (51) | 3” (76) | 20.5” (521) | 51 (23) | 2” (51) | 16’ (406) | 2,300 | 120 | 3/4” | 3/4” (19) |
Looking for more information about Ingersoll Rand Air Rock Drill? Click here to view the Catalog
For help choosing the correct Ingersoll Rand Construction Tools for your application, please call (800) 608-5210 or email info@intlairtool.com
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