Northfield Precision Instrument Corp.

Only One Way In.
Machinery & Machining Tools

Only One Way In.

Island Park, NY... Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. A customer came to Northfield to design a chuck that would allow their precision sprocket to be positioned in the chuck only one way in order to assure a properly timed gear part. It would have to work with a range of gear diameters. Northfield’s engineers...

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Customized Chuck to the Rescue!
Machinery & Machining Tools

Customized Chuck to the Rescue!

Island Park, NY... Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. When a good customer required a chuck to hold parts to be mounted to a Studer Grinder for contour grinding into special cutting tools, they turned to Northfield for help. Northfield’s engineers customized their Model 650 chuck to use only one jaw for...

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Singular Chuck features 2 sets of flexing jaws.
Machinery & Machining Tools

Singular Chuck features 2 sets of flexing jaws.

Customized Model 650 chuck features 2 sets of flexing jaws that are hardened and ground as well as wire cut to allow compensation for out of round parts. Hardened and ground stop locates part axially, and second set of jaws and stop gripÂ- small bore (.750 dia) and pull part onto hard stop. This ensures part is properly seated. To keep chips out, slots are filled with rubber.

Read More »
High-Accuracy, 3-Jaw Chuck has side-loading design.
Machinery & Machining Tools

High-Accuracy, 3-Jaw Chuck has side-loading design.

Balanced by 2 weights, Model 620 chuck is side loaded between jaws as necessitated by part geometry and needs to rest on small boss at end of slot. This 6 in. dia, 3-jaw chuck with 1 in. dia counterbore (hidden) also features sub-jaws and inserts. When removed and re-installed, changeable insert stop pads repeat to 1/10,000 TIR. Accuracies range from 0.001–0.00001 in.

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Northfield Model DPH-500 Diaphragm Chuck
Machinery & Machining Tools

Northfield Model DPH-500 Diaphragm Chuck

Island Park, NY –Â- Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, specializes in developing custom solutions for difficult problems.  In this particular case, Northfield designed a special version of their model DPH-500 Diaphragm Chuck (.000010 TIR) with custom top tooling attached. The center of this chuck has...

Read More »
Delicate Touch
Machinery & Machining Tools

Delicate Touch

Island Park, NYÂ- — Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. Their specialty is developing custom solutions for difficult problems. In this case, a customer who manufactures delicate ceramic rings needed a way to carefully hold the rings on the OD so they could grind the ID. The customer requested that no...

Read More »
Machinery & Machining Tools

Better Than Homemade

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their Model 450 Sliding-Jaw Air Chuck. This air chuck (0.0001” TIR) has special ID-gripping Top Jaws and an Integral Axial Locator. Northfield Precision Instrument has a customer who inspects and balances torque converters and other driveline parts....

Read More »
Expanding Collet Chuck
Machinery & Machining Tools

Expanding Collet Chuck

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their newest expanding Mandrel Collet Chuck. This chuck was custom-designed for a customer to clamp the minor diameter of an internal spline. While clamped, the customer machines the internal counter bore, the outside profile, and the face of the work...

Read More »
Special Internal Grip Collet Chuck
Machinery & Machining Tools

Special Internal Grip Collet Chuck

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their new internal grip collet chuck. This collet chuck was custom-designed for one of their customers to clamp the ID of their valve balls. The collet is a dead length collet with a removable split part stop (part stop is made into two pieces and is...

Read More »
Only One Way In.
Machinery & Machining Tools

Only One Way In.

Island Park, NY... Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. A customer came to Northfield to design a chuck that would allow their precision sprocket to be positioned in the chuck only one way in order to assure a properly timed gear part. It would have to work with a range of gear diameters. Northfield’s engineers...

Read More »
Customized Chuck to the Rescue!
Machinery & Machining Tools

Customized Chuck to the Rescue!

Island Park, NY... Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. When a good customer required a chuck to hold parts to be mounted to a Studer Grinder for contour grinding into special cutting tools, they turned to Northfield for help. Northfield’s engineers customized their Model 650 chuck to use only one jaw for...

Read More »
Singular Chuck features 2 sets of flexing jaws.
Machinery & Machining Tools

Singular Chuck features 2 sets of flexing jaws.

Customized Model 650 chuck features 2 sets of flexing jaws that are hardened and ground as well as wire cut to allow compensation for out of round parts. Hardened and ground stop locates part axially, and second set of jaws and stop gripÂ- small bore (.750 dia) and pull part onto hard stop. This ensures part is properly seated. To keep chips out, slots are filled with rubber.

Read More »
High-Accuracy, 3-Jaw Chuck has side-loading design.
Machinery & Machining Tools

High-Accuracy, 3-Jaw Chuck has side-loading design.

Balanced by 2 weights, Model 620 chuck is side loaded between jaws as necessitated by part geometry and needs to rest on small boss at end of slot. This 6 in. dia, 3-jaw chuck with 1 in. dia counterbore (hidden) also features sub-jaws and inserts. When removed and re-installed, changeable insert stop pads repeat to 1/10,000 TIR. Accuracies range from 0.001–0.00001 in.

Read More »
Northfield Model DPH-500 Diaphragm Chuck
Machinery & Machining Tools

Northfield Model DPH-500 Diaphragm Chuck

Island Park, NY –Â- Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, specializes in developing custom solutions for difficult problems.  In this particular case, Northfield designed a special version of their model DPH-500 Diaphragm Chuck (.000010 TIR) with custom top tooling attached. The center of this chuck has...

Read More »
Delicate Touch
Machinery & Machining Tools

Delicate Touch

Island Park, NYÂ- — Northfield Precision Instrument Corporation is a leader in the design and manufacture of precision workholding chucks. Their specialty is developing custom solutions for difficult problems. In this case, a customer who manufactures delicate ceramic rings needed a way to carefully hold the rings on the OD so they could grind the ID. The customer requested that no...

Read More »
Machinery & Machining Tools

Better Than Homemade

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their Model 450 Sliding-Jaw Air Chuck. This air chuck (0.0001” TIR) has special ID-gripping Top Jaws and an Integral Axial Locator. Northfield Precision Instrument has a customer who inspects and balances torque converters and other driveline parts....

Read More »
Expanding Collet Chuck
Machinery & Machining Tools

Expanding Collet Chuck

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their newest expanding Mandrel Collet Chuck. This chuck was custom-designed for a customer to clamp the minor diameter of an internal spline. While clamped, the customer machines the internal counter bore, the outside profile, and the face of the work...

Read More »
Special Internal Grip Collet Chuck
Machinery & Machining Tools

Special Internal Grip Collet Chuck

Island Park, NY… Northfield Precision Instrument Corporation, a leader in the design and manufacture of precision workholding chucks, introduces their new internal grip collet chuck. This collet chuck was custom-designed for one of their customers to clamp the ID of their valve balls. The collet is a dead length collet with a removable split part stop (part stop is made into two pieces and is...

Read More »

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