Custom Collet Chucks

Northfield is continually developing custom designed collet chucks to solve problems for all metal, composite, ceramic and glass materials. Our engineers provide custom workholding solutions to exactly meet each workholding requirement to bring gage block accuracy to your production pieces.

SELF-CONTAINED AIR ACTUATED

SELF-CONTAINED AIR ACTUATED

New 16C self-contained air actuated collet chuck gripping a customer’s work piece with a serrated collet. The cone shaped end of the part is inside the chuck (not seen) and stops in a female cone locater. The locater mounts to the chucks back plate making it solid (does not move). As the collet closes, it pulls the part into the hard stop giving perfect “Z” axis location. The part is turned, bored and stamp rolled.

MANDREL COLLET CHUCK

MANDREL COLLET CHUCK

Expanding mandrel collet chuck, This chuck clamps the minor diameter of an internal spline. While clamped the customer machines the internal counter bore, the outside profile, and face of work piece.
This chuck also includes air detect sensor holes, and provides positive air blowout to keep chips and slurry away from clamping and locating surfaces.

SPECIAL INTERNAL GRIP COLLET CHUCK

SPECIAL INTERNAL GRIP COLLET CHUCK

Specialized internal grip collet chuck with pull-down action and air detect part seat sensing. Chuck is used on a vertical machining center for rough and finish milling

SPECIAL GIMBALING COLLET CHUCK

SPECIAL GIMBALING COLLET CHUCK

This chucks uses a special precision collet to grip the pitch diameter of a splined drive shaft for balancing. The collet taper is ground inside a sphere which is then installed to the mating sphere, allowing the collet to “gimbal”. When a drive shaft is placed in a balance machine, it “whips” due to the unbalance. If the chuck holds the shaft rigid (not allowing whip,the shaft is falsely balanced with poor results. This chuck cuts the balance cycle in half with superior accuracy. Chuck is push to open and spring clamp.

SPECIAL INTERNAL GRIP COLLET CHUCK

SPECIAL INTERNAL GRIP COLLET CHUCK

Special internal grip collet chuck for balancing drive shafts. The collet on this chuck is ground to grip the pitch diameter of splined C.V. joints of a driveshaft assembly. The “cone” has (3) stop pads for axial location. Tapped holes on the O.D. are used to balance the chuck assembly prior to production. Chuck repeats to less than .0002 in. T.I.R.

NEW 3J AND 16C COLLET CHUCK

NEW 3J AND 16C COLLET CHUCK

Northfield adds two more models to its collet chuck line: the 16C and 3J. Both use Northfield’s standard 6-inch mounting pattern/adapters and air-feed tubes (same as our air chucks). Chucks can be set up for hydraulics as well. Go to “Standard Collet Chucks” for specifications.

CUSTOMIZED 16C COLLET CHUCK

CUSTOMIZED 16C COLLET CHUCK

Northfield adds two more models to its collet chuck line: the 16C and 3J. Both use Northfield’s standard 6-inch mounting pattern/adapters and air-feed tubes (same as our air chucks). Chucks can be set up for hydraulics as well. Go to “Standard Collet Chucks” for specifications.

5C-400 COLLET CHUCK

5C-400 COLLET CHUCK

The 5C-400 uses Northfield’s standard 4-inch mounting pattern/adapters and air-feed tubes (same as our air chucks). This chuck can be modified to actuate with hydraulics. Go to “Standard Collet Chucks” for specifications.

5C-600 COLLET CHUCK

5C-600  COLLET CHUCK

The 5C-600 uses Northfield’s standard 6-inch mounting pattern/adapters and air-feed tubes (same as our air chucks). This chuck can be modified to actuate with hydraulics. Go to “Standard Collet Chucks” for specifications.

CUSTOMIZED 16C COLLET CHUCK

CUSTOMIZED 16C COLLET CHUCK

This is Northfield’s new 16C self-contained, air-actuated collet chuck that grips a customer’s workpiece with a serrated collet. The cone-shaped end of the part is inside the chuck (not seen) and stops in a female cone locator. The locator mounts to the chuck’s back plate, making it solid so it does not move. As the collet closes, it pulls the part into the hard stop, giving perfect “Z” axis location. The part is turned, bored and stamp rolled.

SPECIAL I.D. COLLET CHUCK

SPECIAL I.D. COLLET CHUCK

Shown on left is a Specialized Northfield Collet Chuck with custom top, tooling mounted. Our customer welds torque converter shells. They needed a totally-sealed, vertically-mounted chuck that can expand to grip the I.D. of their torque converter hubs while it rotates on their welding machine.
As the chuck’s I.D. collet expands, it also acts to pull the part down and onto the outer flange (shown in the photo) for repeatable location onto that datum surface.

HOLD ON...ANYWAY YOU WANT

HOLD ON...ANYWAY YOU WANT

Special high powered internal grip collet chuck to hold castings for milling and drilling. Chuck
is spring clamp/air release. Quick change collets and stops allow for easy, fast change over for 10 different work pieces.

SMALL COLLET CHUCK

SMALL COLLET CHUCK

Special 6-inch diameter internal-grip collet chuck to grip transmission component for milling.
Chuck has “air-detect” part seat sensing and is shown on an adapter to mount chuck to a
vertical machining center. Collet is designed to have no pull back or lift.
Chuck is air-actuated with built-in, self- contained air cylinder.

SPECIAL INTERNAL GRIP COLLET CHUCK

SPECIAL INTERNAL  GRIP COLLET CHUCK

Specialized internal grip collet chuck with pull-down action and air-detect part seat sensing.
The pull-down action and air-detect sensing ensure that the part is seated properly before the machine cycle starts. Chuck is used on a vertical machining
center for rough and finish milling.



EIGHT IS ENOUGH

EIGHT IS ENOUGH

Special hydraulically-actuated, internal-grip collet chucks for automotive applications.
Eight (8) chucks mount on a pallet in a vertical machining center and grip automotive parts for drilling.
Chucks are only 3-inches in diameter but deliver up to 1,200 lbs. of draw force. Collets repeat to 1/10,000 T.I.R and pull the part onto the center hard stop.

GO AHEAD… HAVE A BALL

GO AHEAD… HAVE A BALL

This is an internal-grip collet chuck Northfield made for a major manufacturer of ball valves to clamp the I.D. of their valve balls. This is a dead-length collet with a removable split-part stop (part stop is made into two pieces and hinged) to locate the back-side of the work piece. The collet is removed after clamping and prior to grinding of the work piece.
This chuck is used in a valve ball grinder. The customer needed to locate/stop the ball axially on the chuck. So Northfield provided a removable spacer (locator/stop) behind the ball (between the ball and chuck) for axial location. The locator needed to be removable to allow the grinding wheel (cup) access around the top and bottom of the ball.

SPECIAL INTERNAL GRIP COLLET CHUCK

SPECIAL INTERNAL  GRIP COLLET CHUCK

Specialized internal grip collet chuck with pull-down action and air detect part seat sensing.
The pull-down action and air detect sensing ensure that the part is seated properly before the machine cycle starts. Chuck is used on a vertical machining center for rough and finish milling.


8" I.D. GRIP COLLET CHUCK

8" I.D. GRIP COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>This is an 8-inch diameter, internal-grip collet chuck that grips on the “pitch diameter” of a spline. The collet is spring clamp/push to open. Pull-back action of the collet draws the part onto the hard stop. The collets and stops are changeable for different size workpieces

SPECIAL 6" DIAMETER I.D. COLLET CHUCK

SPECIAL 6" DIAMETER I.D. COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Special 6-inch diameter internal grip collet chuck to grip transmission component for milling. Chuck has “air detect” part seat sensing and is shown on an adapter to mount chuck to vertical machining center. Collet is designed to have no pull-back or lift. Chuck is air-actuated with built-in, self-contained air cylinder.

MODEL 650 WITH COLLET CHUCK

MODEL 650 WITH COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Photo shows Northfield’s standard model 650 air chuck (right) and standard 6in collet chuck (left). These chucks are used on a tilting rotary table which makes it difficult to remove the air feed when changing from air chuck to collet chuck. The adapter (center) has air ported through it, and the chucks have matching air ports. When changing over, there is no “air tube” to unscrew--simply unbolt one and mount the other.

SPECIAL 2 STAGE I.D. COLLET CHUCK

SPECIAL 2 STAGE I.D. COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Special “Two Stage” internal grip collet chucks. These chucks hold transmission gears for face grinding. The customer required that the chucks “first” grip the part, then pull it back 1.5mm onto an air-detect part-stop. The chucks are air-open and spring-clamped. Changeable collets and air-detect stops run over 13 different part sizes. Running 24/7 with a 45-second machine cycle, these chucks come back to Northfield once a year for cleaning and seal changes. Chuck diameter is 6.5-inches

SPECIAL I.D. COLLET CHUCK

SPECIAL I.D. COLLET CHUCK

Special internal grip collet chuck / reverse diaphragm to grip transmission components for drilling. This chuck grips the I.D. and has “pull down” action. Special changeable stops have “air detect” part sensing to insure part is seated properly before cycle start. Chuck is air actuated with built in self contained air cylinder that can deliver up to 6,000 pounds of grip force. With (16) segments, this is true “full wrap” clamping.

I.D. COLLET CHUCK

I.D. COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Two of the four chucks shown use an internal-grip collet to center the workpiece while (4) pull-down arms face-clamp the part. These chucks grip drive shafts for balancing at speeds up to 6,000 rpm. The (4) pull-back arms clamp over the bolt-holes of the
workpieces shown in photo. Chucks are draw-bar actuated and 8-inches in diameter

HYDRAULICALLY ACTUATED COLLET CHUCK

HYDRAULICALLY ACTUATED COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Special hydraulically-actuated, internal-grip collet chucks for automotive application.
(8) chucks mount on a pallet in a vertical machining center, and grip automotive parts for drilling. The chucks are only 3-inches in diameter but deliver up to 1,200 lbs, of draw force. Collets repeat to 1/10,000 T.I.R. and pull the part onto the center hard-stop.

4" DIAMETER I.D. COLLET CHUCK

4" DIAMETER I.D. COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>Special 4in. diameter internal grip collet chuck gripping a medical component for grinding. This chuck grips a .310in. I.d. .700in. deep and pulls the part against the hard stop. Repeatability is 1/10,000 T.I.R. Chuck is air actuated with built in self contain air cylinder.

7 " DIAMETER COLLET CHUCK

7 " DIAMETER COLLET CHUCK

<div style="display:none">fiogf49gjkf0d</div>These custom 7" diameter chucks use the small internal-grip collet to center the
workpiece while the outer “spit fingers” face the clamp. The collet is spring-clamp/draw-bar open. The split fingers are actuated by the draw bar. The fingers go inside the bolt-hole, expand and face clamp, mimicking how a bolt would hold the part. The chucks are used for balancing drive shafts and grip what is called a “rubber coupling” at speeds up to 6,000 rpm.

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NORTHFIELD PRECISION INSTRUMENT CORP.
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