Ingersoll Rand 8670-8-3AM High-Thrust Pneumatic Self-Feed Drill | 3" Stroke | 5/8" Capacity | 1.25 HP | 800 RPM

Ingersoll Rand 8670-8-3AM High-Thrust Pneumatic Self-Feed Drill combines a 1.25 HP pneumatic motor with 800 RPM free speed and a 3-inch stroke length. Part of the High-Thrust 8670 Series, this model delivers 500 lbs of forward thrust at 90 PSI for drilling suitable metals, wood, and fiber-reinforced plastic. Its automatic feed mechanism advances and retracts the spindle during each drilling cycle, helping maintain consistent cutting movement without manual feed operation. The lower spindle speed provides a suitable drilling configuration for larger holes within the manufacturer's specified material capacities. A 3/4-inch capacity chuck accommodates compatible cutting tools for fixture-mounted manufacturing and machining systems.

The 8670-8-3AM features a double-acting pneumatic feed system that controls both forward and retract movements through compressed air. An adjustable hydraulic check regulates cutting advance, allowing feed speed to be matched to the workpiece material and drilling requirements. Needle valve controls provide adjustment of forward and retract strokes, while the stroke adjustment screw permits precise spindle travel settings. Ball bearing spindle support helps maintain drilling alignment during repeated operations. The A configuration identifies the 3/4-inch chuck arrangement, while the M configuration identifies the muffled exhaust option. With a 3/8-inch NPT male air inlet, 5/8-inch recommended air hose, and 90 PSI operating pressure, this self-feed drill is suited to integration into pneumatic production fixtures and automated machining equipment.

Type: High-Thrust Pneumatic Self-Feed Drill | Model: 8670-8-3AM | Series: High-Thrust 8670 Series | Power: 1.25 HP | Free Speed: 800 RPM | Stroke Length: 3 in. | Nominal Drilling Capacity in SAE 1213 Steel: 7/16 in. | Nominal Drilling Capacity in 2024-T4 Aluminum: 3/4 in. | Nominal Drilling Capacity in Medium Wood or FRP: 7/8 in. | Standard Chuck Capacity: 3/4 in. | Sound Level: 80 dBA | Spindle Thread: 5/8"-16 Male | Air Inlet: 3/8 in. NPT Male | Control Ports: 1/8 in. NPTF Female | Recommended Hose Size: 5/8 in. I.D. | Operating Pressure: 90 PSI | Exhaust: Muffled

Features:

• 1.25 HP pneumatic motor operates at 800 RPM free speed for drilling larger holes in suitable production materials.
• 3-inch automatic feed stroke provides controlled spindle movement for repeated drilling operations in fixed machining fixtures.
• 500 lbs thrust at 90 PSI supplies forward cutting force for drilling compatible metals and other machinable materials.
• Double-acting air piston provides smooth, controlled forward and retract strokes during automated drilling cycles.
• Needle valve controls allow adjustment of forward and retract movements to accommodate different operating requirements.
• Adjustable hydraulic check helps regulate cutting feed rate and control drill breakthrough.
• Stroke adjustment screw provides continuously adjustable spindle travel settings for specific drilling depths.
• Ball bearing spindle support helps maintain drilling precision, while the muffled exhaust reduces operating noise.

Applications:

• Industrial production drilling: Creating repeatable holes in workpieces using fixture-mounted automatic drilling equipment.
• Steel component manufacturing: Drilling suitable stainless steel and carbon steel parts within the specified nominal capacities.
• Aluminum fabrication: Producing holes in aluminum housings, mounting components, and machined assemblies.
• Automotive and equipment manufacturing: Integrating automatic drilling operations into production fixtures for brackets, frames, and mechanical components.
• Wood and composite machining: Drilling compatible medium-density wood and fiber-reinforced plastic components using appropriate cutting tools.

FAQs:

• Q: What is the operating speed and stroke length of the Ingersoll Rand 8670-8-3AM?
  A: The 8670-8-3AM operates at 800 RPM free speed and provides a 3-inch automatic feed stroke. Its pneumatic mechanism controls spindle advance and retraction during drilling cycles.
• Q: What materials and hole sizes can the 8670-8-3AM handle?
  A: The manufacturer specifies nominal drilling capacities of 3/8 inch in Type 304 stainless steel, 7/16 inch in SAE 1213 steel, 3/4 inch in 2024-T4 aluminum, and 7/8 inch in medium wood or fiber-reinforced plastic. Actual cutting performance depends on tooling, workpiece conditions, and feed settings.
• Q: How does the 8670-8-3AM differ from the 8670-13-3AM?
  A: The 8670-8-3AM operates at 800 RPM, while the 8670-13-3AM operates at 1,350 RPM. Both provide 500 lbs of thrust and a 3-inch stroke, but the lower-speed 8670-8-3AM has larger nominal drilling capacities in the materials listed by Ingersoll Rand.
• Q: How is the feed movement adjusted on this self-feed drill?
  A: The drill uses pneumatic feed controls and an adjustable hydraulic check to regulate spindle advance and retraction. Its stroke adjustment screw allows the travel length to be set for the required drilling operation.
• Q: What compressed-air supply is required for the 8670-8-3AM?
  A: Ingersoll Rand recommends 90 PSI operating pressure, a 3/8-inch NPT male air inlet, and a 5/8-inch inside-diameter air hose. Air consumption is specified as 5.0 cubic feet during a typical six-second cycle rather than as a continuous CFM rating.

NON RETURNABLE. MADE TO ORDER.

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