Designed for precision production drilling, the Ingersoll Rand 8258-C28-1 self-feed twin drill combines a 1/4" drilling capacity, 0.50 HP pneumatic motor, 2,800 RPM free speed, and single gear reduction to deliver controlled, repeatable drilling performance in demanding manufacturing environments. Its integrated self-feed mechanism automatically advances the drill into the workpiece, helping improve hole consistency, reduce operator fatigue, and enhance productivity during repetitive drilling operations.
The twin drill configuration is designed to support simultaneous drilling operations, making it well suited for production processes where multiple holes must be drilled accurately and efficiently. Built for continuous-duty industrial service, the 8258-C28-1 provides dependable pneumatic performance for aerospace, transportation equipment, fabrication, and general manufacturing applications requiring repeatable drilling accuracy and efficient production cycles.
Type: Self-Feed Twin Drill | Drilling Capacity: 1/4 in. | Power: 0.50 HP | Free Speed: 2,800 RPM | Gear Reduction: Single Gear Reduction
Features:
- Self-feed mechanism automatically advances the drill for consistent hole quality and reduced operator effort.
- Twin drill configuration supports simultaneous drilling operations to improve production efficiency.
- 0.50 HP pneumatic motor delivers dependable performance for continuous-duty industrial drilling applications.
- 2,800 RPM free speed provides a balanced combination of drilling speed and control.
- Single gear reduction provides efficient power transmission for reliable drilling performance.
- Designed for repetitive manufacturing operations requiring accurate and repeatable hole production.
- Pneumatic operation supports dependable performance in automated and semi-automated production environments.
Applications:
- Production drilling in aerospace and aircraft manufacturing.
- Simultaneous hole drilling for fabricated and assembled components.
- Transportation equipment and vehicle component manufacturing.
- Industrial fabrication requiring controlled, repeatable drilling operations.
- General manufacturing applications where consistent multi-hole drilling improves productivity and product quality.
FAQs:
- Q: What is the advantage of a self-feed drill?
A: A self-feed drill automatically advances into the workpiece at a controlled rate, helping improve hole consistency while reducing operator fatigue during repetitive production drilling. - Q: Why choose a twin drill configuration?
A: The twin drill configuration is designed to support simultaneous drilling operations, helping improve productivity where multiple holes must be drilled accurately and efficiently. - Q: Why does this drill operate at 2,800 RPM?
A: The 2,800 RPM free speed provides an effective balance between drilling speed and control, making it suitable for precision production drilling applications. - Q: What is the purpose of the single gear reduction?
A: The single gear reduction provides efficient power transmission for smooth, dependable drilling performance while maintaining consistent operating speed.
NON RETURNABLE. MADE TO ORDER.
| 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 |
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|---|---|---|---|---|---|---|---|---|---|---|---|
| Stainless Steel Type 304 |
Steel SAE 1213 |
Aluminum 2024-T4 |
Wood Med. or FRP |
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| BANT-A-MATIC SERIES | |||||||||||
| 8248-B45-1 | 1-1/4" (32) | 4,400 | 1/32 (.78) | 1/16 (1.6) | 3/32 (2.4) | 3/32 (2.4) | Single | ||||
| 8248-B30-1 | 1-1/4" (32) | 2,700 | 1/16 (1.6) | 3/32 (2.4) | 1/8 (3.2) | 1/8 (3.2) | 90 (400) | 1.5 (42) | 77 | 5/32(4.0) | Single |
| 8248-B8-1 | 1-1/4" (32) | 900 | 1/8 (3.2) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Double | ||||
| 8248-B45-2 | 2.0" (51) | 4,400 | 1/32 (.78) | 1/16 (1.6) | 3/32 (2.4) | 3/32 (2.4) | Single | ||||
| 8248-B30-2 | 2.0" (51) | 2,700 | 1/16 (1.6) | 3/32 (2.4) | 1/8 (3.2) | 1/8 (3.2) | 90 (400) | 1.5 (42) | 77 | 5/32(4.0) | Single |
| 8248-B8-2 | 2.0" (51) | 900 | 1/8 (3.2) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Double | ||||
| 8248-B45-3 | 3.0" (76) | 4,400 | 1/32 (.78) | 1/16 (1.6) | 3/32 (2.4) | 3/32 (2.4) | Single | ||||
| 8248-B30-3 | 3.0" (76) | 2,700 | 1/16 (1.6) | 3/32 (2.4) | 1/8 (3.2) | 1/8 (3.2) | 90 (400) | 1.5 (42) | 77 | 5/32(4.0) | Single |
| 8248-B8-3 | 3.0" (76) | 900 | 1/8 (3.2) | 1/8 (3.2) | 3/16 (4.8) | 3/16 (4.8) | Double | ||||
| PAR-A-MATIC SERIES | |||||||||||
| 8258-C50-1 | 1-1/4" (32) | 5,000 | 1/16 (1.6) | 1/8 (3.2) | 1/8 (3.2) | Single | |||||
| 8258-C28-1 | 1-1/4" (32) | 2,800 | 3/64 (1.2) | 1/8 (3.2) | 3/16 (4.5) | 3/16 (4.5) | Single | ||||
| 8258-C21-1 | 1-1/4" (32) | 2,100 | 5/64 (1.9) | 5/32 (4.0) | 7/32 (5.6) | 7/32 (5.6) | 170 (756) | 2.3 (65) | 74 | 1/4 (6.4) | Single |
| 8258-C14-1 | 1-1/4" (32) | 1,450 | 7/64 (2.7) | 3/16 (4.5) | 1/4 (6.4) | 1/4 (6.4) | Double | ||||
| 8258-C8-1 | 1-1/4" (32) | 850 | 11/64 (4.3) | 1/4 (6.4) | 9/32 (7.1) | 9/32 (7.1) | Double | ||||
| 8258-C5-1 | 1-1/4" (32) | 500 | 1/4 (6.4) | 1/4 (6.4) | 5/16 (7.9) | 5/16 (7.9) | Double | ||||
| 8258-C50-2 | 2.0" (51) | 5,000 | 1/16 (1.6) | 1/8 (3.2) | 1/8 (3.2) | Single | |||||
| 8258-C28-2 | 2.0" (51) | 2,800 | 3/64 (1.2) | 1/8 (3.2) | 3/16 (4.5) | 3/16 (4.5) | Single | ||||
| 8258-C21-2 | 2.0" (51) | 2,100 | 5/64 (1.9) | 5/32 (4.0) | 7/32 (5.6) | 7/32 (5.6) | 170 (756) | 2.3 (65) | 74 | 1/4 (6.4) | Single |
| 8258-C14-2 | 2.0" (51) | 1,450 | 7/64 (2.7) | 3/16 (4.5) | 1/4 (6.4) | 1/4 (6.4) | Double | ||||
| 8258-C8-2 | 2.0" (51) | 850 | 11/64 (4.3) | 1/4 (6.4) | 9/32 (7.1) | 9/32 (7.1) | Double | ||||
| 8258-C5-2 | 2.0" (51) | 500 | 1/4 (6.4) | 1/4 (6.4) | 5/16 (7.9) | 5/16 (7.9) | Double | ||||
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