Ingersoll Rand 8268-A46-3 Self-Feed Twin Drill | 3/8" Capacity | 0.75 HP | 4,600 RPM | Single Gear Reduction

For automated production drilling and close-center machining, the Ingersoll Rand 8268-A46-3 Self-Feed Twin Drill combines a 3/8" capacity, 0.75 HP pneumatic motor, and 4,600 RPM free speed in a twin-spindle configuration. Its single gear reduction provides the high spindle speed required for suitable production drilling applications, while the adjustable dual spindle heads allow the tool to accommodate different hole-spacing requirements.

The 8268-A46-3 features a 3.0" stroke and belongs to the Super Par-A-Matic Series. The spindle centers are adjustable from 3/4" to 3-3/4", providing flexibility for close-center machining. The twin-drill design is intended to reduce machining time and parts handling by allowing two operations to be performed during a production cycle. Performance data is specified at 90 PSI (6.2 bar).

Type: Self-Feed Twin Drill | Series: Super Par-A-Matic | Capacity: 3/8" (9.5 mm), Steel | Power: 0.75 HP (0.56 kW) | Free Speed: 4,600 RPM | Gear Reduction: Single | Stroke Length: 3.0" (76 mm) | Thrust @ 90 PSI: 250 lbs (1112 N) | Air Consumption: 2.9 ft³/cycle (82 L/cycle) | Sound Level: 77 dB(A) | Standard Chuck Capacity: 3/8" (9.5 mm)

Features:

• Twin-spindle configuration allows two drilling operations to be performed during a production cycle.
• Single gear reduction provides the specified 4,600 RPM free speed for high-speed drilling applications.
• 3/8" steel capacity supports production drilling within the specified nominal capacity.
• 3.0" stroke provides extended axial travel for the drilling cycle.
• Adjustable spindle centers from 3/4" to 3-3/4" accommodate different close-center machining requirements.
• Double-acting air piston provides controlled forward and retract strokes.
• Needle valve controls allow adjustment of forward and retract stroke characteristics.
• Adjustment screw provides infinite stroke-length settings up to 3.0" maximum.
• Muffled exhaust helps provide a more comfortable work environment during operation.

NON RETURNABLE. MADE TO ORDER.

Applications:

• Automated production drilling where two holes can be machined during the same cycle.
• Close-center machining applications requiring adjustable twin spindle positioning.
• Production drilling of steel components within the specified 3/8" capacity.
• Fixture-based manufacturing systems requiring pneumatic spindle rotation and feed.
• Production environments where reducing parts handling and machining time is beneficial.

FAQs:

• Q: What is the drilling capacity of the 8268-A46-3?
  A: The model is listed with a 3/8" (9.5 mm) nominal capacity in steel. Actual drilling capacity depends on the workpiece material and operating conditions.
• Q: What does single gear reduction mean?
  A: Single gear reduction uses one stage of gearing to reduce motor speed before the spindle, providing the specified 4,600 RPM free speed for this model.
• Q: What is the stroke length?
  A: The 8268-A46-3 has a 3.0" (76 mm) stroke length.
• Q: How far apart can the twin spindles be adjusted?
  A: The Super Par-A-Matic Series provides spindle-center adjustment from 3/4" to 3-3/4" (19 to 95 mm).
• Q: What operating pressure is used for the published performance data?
  A: The manufacturer specifies the performance data at 90 PSI (6.2 bar) operating pressure.