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COLLET CLOSERS - AIR  - DUHNAM

AIR COLLET CLOSER
Air Collet Closers
Features and Benefits
Dunham Tool manufactures high quality 5c air collet closers, 2j air collet closers, 16c air collet closers and a 3j air collet closer as well as many other models. The precision 5c collet closer and collet actuator are used with lathes, grinders, and CNC rotary tables, and are rated for up to 6000 RPM maximum. Dunham Tool collet stops and dead length collet stops are also available as optional attachments. Dunham closer collets are frequently used on Dunham Tools family of 50m precision spindle, high speed cartridge spindle and spindle headstock products as well as Hardinge lathes and other lathes and grinders.

Dunham lathe collet closers are designed to increase production and reduce operator fatigue on any lathe by activating either 2j, 3j, 16c, and 5c collets, expanding collets, or step chucks. Closer collet models with thru-hole capacity will accept bar stock up to 1 1/16 diameter (5C), 1 3/8 (2J) & 1 5/8" (16C) and 1 3/4"(3J). Even gripping pressure compensates for stock diameter variations which a mechanical lathe collet closer cannot accommodate.

  • Standard, high speed, and high pressure
  • Operation to 6,000 rpm based on model
  • Reduced operator fatigue means increased production
  • Activates 2j, 3j, 16c & 5c collets, expanding collets, and step chucks
  • Accessories include standard and custom length draw tubes, spindle mounting adapters, and a variety of valves, gages, and regulators
  • Thru hole capacity 1 1/16" (5C) to 1 3/4" (3J)
  • Concentricity adjustability



 

Specifications and Dimensions for Air Collet Closers
Specifications
Standard
5C or 2J
Oil Mist
5C
High Pressure
5C or 2J
Oil Mist
16C
Main body diameter (A)
6"
6"
8 1/2"
7 7/8
Overall length (B)
7"
7"
6 3/4"
8 1/2
Spindle adapter length (C)
2 1/2"
2 1/2"
2 1/2"
2 1/2
Spindle adapter O.D. (D)
2 7/8"
2 7/8"
2 7/8
-
Draw tube O.D. 5C collets
1 3/8"
1 3/8"
1 3/8"
-
Draw tube O.D. 2J collets
1 3/4"
N/A
1 3/4"
-
Draw tube O.D. 16C collets
-
-
-
2 1/8"
Draw bar pull @100p.s.i.
1,600
1,990
2,700
3040
Draw bar push @100p.s.i.
600
1,620
3,100
1200
Stroke-standard (optional)
5/16" (1")
5/16" (1")
3/4in
5/16
Maximum spindle speed (rpm)
3,600
6,000
2,400
5,000
Weight
14lb., 11oz.
14lb., 11oz.
17lb., 9oz.
37 lb.

 

Model Number and Description Air Collet Closers
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Part Number
Part Description
DACC
Air collet closer without blank machinable spindle mounting adapter. Does not include draw tube; 3,600 rpm max. Pull force = 1,650 lbs at 100 P.S.I. For 5C Collets.
DACCOM
Air collet closer (oil mist cooled) without blank machinable spindle mounting adapter. Does not include draw tube; 4,500 rpm constant, 6,000 rpm intermittent. Pull force = 1,990 lbs at 100 P.S.I. For 5C Collets.
DACCHI
Includes draw tube. Pull force = 1,760 lbs at 100 P.S.I. Air collet closer (high speed 6,000 rpm) without machinable spindle mounting adapter (no through hole). For 5C Collets.
DACC27
Pull force = 2,700 lbs at 100 P.S.I. Air collet closer (high pressure) with machinable spindle mounting adapter (with 1" through hole) For 5C Collets.
DACC272J
Air collet closer (high pressure) without machinable spindle mounting adapter. Does not include draw tube. For 2J Collets.
DACC16C
Air collet closer without blank machinable spindle mounting adapter (with 1 5/8" thru hole). Does not include drawtube; 5000 RPM Max; Pull force 3040 lbs. For 16C Collets.
00602100A
Draw Tub Seal - Mounts to ID of Air Closer.
DACCDP
Air Collet Closer 5C 1 1/16" thru hole, 3,600 RPM max, Pull Force 2,700 lbs.
 
Air Collet Closer Accessories
DACCMAM
Machinable mounting adapter to customer dimensions, straight bore
DACCMAT
Machinable mounting adapter to customer dimensions, threaded bore
SEAL-OPTION
Special seal around piston to reduce contamination
HARD OPTION
Special hard coating on piston, cylinder and main bearing mount to resist wear
MB244G
Blank machinable spindle mounting adapter with 1" through hole
DT-18
18 inch drawtube 5C
DT-24
24 inch drawtube 5C
DT-30
30 inch drawtube 5C
DT-36
36 inch drawtube 5C
DT-42
42 inch drawtube 5C
 
DT-24-16C
24 inch drawtube 16C
DT-30-16C
30 inch drawtube 16C
DT-36-16C
36 inch drawtube 16C
DT-42-16C
42 inch drawtube 16C
 
DS100
Dead length collet stop
DACC-4HV-KIT
4-way hand valve, air regulator, gage and two (2) 36 long air hoses and fittings
DACC-4FV-KIT
4-way foot valve, air regulator, gage and two (2) 72 long air hoses and fittings
DUNHAM DACC AIR COLLET CLOSER
DUNHAM DCC2J AIR COLLET CLOSER WITH ADAPTER
DUNHAM AIR COLLET ACTUATOR WITH OIL MIST
DUNHAM DACCHI AIR COLLET CLOSER
DUNHAM DACDP DOUBLE PISTON COLLET CLOSER
DUNHAM DAC27 5C AIR COLLET CLOSER
DUNHAM 16C / 3J CAPACITY AIR COLLET CLOSER WITH OIL MIST

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