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Ingersoll Rand Par-A-Matic, Twin Drill PN 8258-C14-2

Ingersoll Rand Par-A-Matic, Twin Drill PN 8258-C14-2


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ARO Twin Drills perform two machining operations per cycle for holes with center distances from 3/8" to 3 3/4". They’re ideal for many closecenter machining problems. But even more important, ARO Twin Drills significantly reduce machining time and parts handling while improving quality.

Three series of standard tools are available, equipped with adjustable dual spindle heads. Like the other ARO Automatic Production Tools, each Twin Drill is a completely self-contained unit with built-in cycle, feed rate, and motor controls. They can be operated individually or in conjunction with other tools and machine components.


Additional features / benefits include—

  • Adjustable spindles allow reapplication as machining requirements change.
  • Comprehensive range of American and metric collets available to meet a wide variety of hole specifications.
  • Double-acting air piston provides smooth, controlled forward and retract strokes.
  • Needle valve controls allow adjustment of forward and retract strokes.
  • Adjustment screw provides infinite stroke length settings up to 3.0" maximum.
  • Muffled exhaust for a quieter work environment.

 

SPECIFICATIONS
MODEL NUMBER 8258-C14-2
TOOL SERIES Par-A-Matic
STROKE LENGTHS
in. 2.0"
mm 51 mm
FREE SPEED (rpm) 1,450
NOMINAL DRILLING CAPACITIES
Stnls. Steel Type 304 7/64 (2.7)
Steel SAE 1213 3/16 (4.5)
Aluminum 2024-T4 1/4 (6.4)
Wood, Med. or FRP 1/4 (6.4)
THRUST @90 PSI
lb. 170
(N) 756
AIR CONSP.‡ @Working Speed
ft 3/cycle 2.3
L/cycle 65
SOUND LEVEL dB(A) 74
STD. CHUCK CAPACITY
in. 1/4
(mm) 6.4
GEAR REDUCTION Double
SPINDLE ADJUSTMENT 1/2" to 2 1/2" centers  (12.7 to 63.5 mm)
AIR INLET 1/4" NPT male
CONTROL PORTS 1/8" NPTF female
RECOMMENDED HOSE SIZE 5/16" ID
RECOMMENDED OPERATING PRESSURE 90 PSI (6.2 bar)

 

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