Ingersoll Rand 8245-B8-2 is a Bant-A-Matic Series Self-Feed Air Drill built for repetitive, fixture-mounted drilling where controlled spindle feed and retract movement are required. Its 0.25 HP pneumatic motor operates at a 900 RPM free speed through double gear reduction, giving this model a lower-speed configuration suited to drilling applications that benefit from controlled spindle speed. The -2 version provides a 2 in. (51 mm) stroke, while the manufacturer lists a 3/16 in. (4.8 mm) nominal capacity in SAE 1213 steel.
The Bant-A-Matic feed system uses a double-acting air piston for controlled forward and retract strokes. Needle-valve controls allow the feed and retract rates to be adjusted, while the adjustment screw provides infinite stroke-length settings. A built-in four-way valve supports manual or remote operation. Ball-bearing spindle support provides controlled spindle guidance, and the damped exhaust helps reduce operating noise. The standard configuration uses a 1/4 in. (6.4 mm) chuck, 1/8 in. NPT male air inlet, and 1/4 in. recommended hose I.D. at the manufacturer's recommended 90 PSI operating pressure.
Type: Self-Feed Air Drill | Series: Bant-A-Matic | Model: 8245-B8-2 | Capacity: 3/16 in. (4.8 mm) | Motor Power: 0.25 HP | Free Speed: 900 RPM | Gear Reduction: Double | Stroke Length: 2 in. (51 mm) | Thrust: 90 lb (400 N) at 90 PSI | Air Consumption: 1.5 ft³/cycle (42 L/cycle) at working speed | Sound Level: 77 dB(A) | Standard Chuck Capacity: 1/4 in. (6.4 mm) | Air Inlet: 1/8 in. NPT Male | Control Ports: 1/8 in. NPTF Female | Spindle Thread: 1/2"-20 Male | Recommended Hose I.D.: 1/4 in. | Recommended Operating Pressure: 90 PSI (6.2 bar)
Features:
- The self-feed arrangement provides controlled forward and retract movement for repeatable drilling cycles.
- The 0.25 HP pneumatic motor provides spindle rotation for the drilling operation.
- Double gear reduction provides the drive configuration specified for the 900 RPM model.
- The double-acting air piston provides controlled forward and retract strokes.
- Needle-valve controls allow adjustment of the forwarding and retracting strokes.
- The adjustment screw provides infinite stroke-length settings.
- The built-in four-way valve permits manual or remote operation.
- Ball-bearing spindle support provides precision spindle guidance.
- The damped exhaust helps provide a quieter work environment during operation.
- The pneumatic design requires only simple circuitry for installation.
NON-RETURNABLE. MADE TO ORDER.
Applications:
- Production drilling — carrying out repetitive holemaking where controlled pneumatic feed and retract movement are required.
- Fixture-mounted machining — integrating the drill into dedicated production fixtures for repeatable drilling cycles.
- Metal fabrication — drilling SAE 1213 steel within the manufacturer's stated nominal capacity.
- Secondary machining — automating repetitive drilling operations as part of a larger production process.
- Manufacturing assembly — using controlled spindle travel for panel, frame, and other compatible production holes.
FAQs:
- Q: What is the free speed of the 8245-B8-2?
A: The 8245-B8-2 has a 900 RPM free speed. - Q: What does the “-2” suffix indicate?
A: The -2 configuration identifies the 2 in. (51 mm) stroke version of the 8245-B8 model family. - Q: What does double gear reduction mean?
A: It identifies the double gear reduction configuration used in this 900 RPM spindle drive. - Q: What is the nominal drilling capacity?
A: The manufacturer lists a nominal 3/16 in. (4.8 mm) capacity in SAE 1213 steel. The catalog also lists 3/32 in. (2.4 mm) in Type 304 stainless steel, 1/4 in. (6.4 mm) in 2024-T4 aluminum, and 5/16 in. (7.9 mm) in wood, medium or FRP. - Q: What is the stroke length?
A: The 8245-B8-2 has a 2 in. (51 mm) stroke. - Q: What is the standard chuck capacity?
A: The standard chuck capacity is 1/4 in. (6.4 mm). - Q: What air supply does this drill require?
A: The manufacturer recommends 90 PSI (6.2 bar) operating pressure, a 1/8 in. NPT male air inlet, and a 1/4 in. I.D. hose. - Q: Can the 8245-B8-2 be operated remotely?
A: Yes. The Bant-A-Matic configuration includes a four-way valve that permits manual or remote operation.
| SKU | STROKE LENGTHS IN (MM) |
FREE SPEED RPM |
*NOMINAL DRILLING CAPACITIES | THRUST @ 90PSI LBS (N) |
AIR CONSP.‡ AT WORKING SPEED FT³/CYCLE (L/CYCLE) |
SOUND LEVEL DBA |
STANDARD CHUCK CAPACITY IN (MM) |
GEAR REDUCTION |
|||
|---|---|---|---|---|---|---|---|---|---|---|---|
| STAINLESS STEEL TYPE 304 |
STEEL SAE 1213 |
ALUMINUM 2024-T4 |
WOOD MED. OR FRP |
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| BANT-A-MATIC SERIES | |||||||||||
| 8245-203-1* | 1-1/4” (32) | 19,000 | — | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | Single | ||||
| 8245-101-1 | 1-1/4” (32) | 10,000 | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | Double | ||||
| 8245-B45-1 | 1-1/4” (32) | 4,400 | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | 5/32 (4.0) | 90 (400) | 1.5 (42) | 77 | 1/4 (6.4) | Single |
| 8245-B30-1 | 1-1/4” (32) | 2,700 | 1/16 (1.6) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Single | ||||
| 8245-B8-1 | 1-1/4” (32) | 900 | 3/32 (2.4) | 3/16 (4.8) | 1/4 (6.4) | 5/16 (7.9) | Double | ||||
| 8245-203-2 | 2.0” (51) | 19,000 | — | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | Single | ||||
| 8245-101-2 | 2.0” (51) | 10,000 | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | Double | ||||
| 8245-B45-2 | 2.0” (51) | 4,400 | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | 5/32 (4.0) | 90 (400) | 1.5 (42) | 77 | 1/4 (6.4) | Single |
| 8245-B30-2 | 2.0” (51) | 2,700 | 1/16 (1.6) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Single | ||||
| 8245-B8-2 | 2.0” (51) | 900 | 3/32 (2.4) | 3/16 (4.8) | 1/4 (6.4) | 5/16 (7.9) | Double | ||||
| 8245-203-3 | 3.0” (76) | 19,000 | — | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | Single | ||||
| 8245-101-3 | 3.0” (76) | 10,000 | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | Double | ||||
| 8245-B45-3 | 3.0” (76) | 4,400 | 1/32 (0.8) | 1/16 (1.6) | 1/8 (3.2) | 5/32 (4.0) | 90 (400) | 1.5 (42) | 77 | 1/4 (6.4) | Single |
| 8245-B30-3 | 3.0” (76) | 2,700 | 1/16 (1.6) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Single | ||||
| 8245-B8-3 | 3.0” (76) | 900 | 3/32 (2.4) | 3/16 (4.8) | 1/4 (6.4) | 5/16 (7.9) | Double | ||||
| PAR-A-MATIC SERIES | |||||||||||
| *8255-172-1 | 1-1/4” (32) | 17,000 | — | 1/64 (0.4) | 1/32 (0.8) | 1/16 (1.6) | Single | ||||
| 8255-101-1 | 1-1/4” (32) | 10,000 | — | 1/32 (0.8) | 1/16 (1.6) | 5/32 (4.0) | Double | ||||
| 8255-A50-1 | 1-1/4” (32) | 5,000 | — | 5/64 (2.0) | 3/16 (4.8) | 3/16 (4.8) | Single | ||||
| 8255-A28-1 | 1-1/4” (32) | 2,800 | 1/16 (1.6) | 9/64 (3.6) | 1/4 (6.4) | 1/4 (6.4) | Single | ||||
| 8255-A21-1 | 1-1/4” (32) | 2,100 | 7/64 (2.8) | 7/32 (5.6) | 9/32 (7.1) | 5/16 (7.9) | 170 (756) | 2.3 (65) | 74 | 5/16 (7.9) | Single |
| 8255-A14-1 | 1-1/4” (32) | 1,450 | 5/32 (4.0) | 1/4 (6.4) | 5/16 (7.9) | 3/8 (9.5) | Double | ||||
| 8255-A8-1 | 1-1/4” (32) | 850 | 11/64 (4.4) | 9/32 (7.1) | 21/64 (8.3) | 25/64 (9.9) | Double | ||||
| 8255-A5-1 | 1-1/4” (32) | 500 | 1/4 (6.4) | 5/16 (7.9) | 11/32 (8.7) | 13/32 (10.3) | Double | ||||
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