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NORTHFIELD PRECISION INSTRUMENT
PRECISION AIR CHUCKS CATALOG

PRECISION AIR CHUCKS CATALOG

Product catalog summary

Ordering Information
To customize the air tube for your machine, provide the internal diameter of the spindle's rear, the overall length of the spindle, and the internal diameter at the midpoint for spindles over 25 inches. Terms are net 30 days, F.O.B. Island Park, NY. Accessories include air tube assemblies, manual operating valves, adapter plates, and more.

Custom Jaws
Northfield offers custom-designed workholding jaws tailored to customer specifications. These jaws are crafted from various materials like hardened steel, aluminum, and DELRIN® plastic, ensuring precision and suitability for intricate and fragile parts.

Special Devices
Northfield manufactures specialized tooling to enhance productivity, including devices for parts ejection, coolant direction, and robotic loading/unloading.

3" (76mm) Chucks
These chucks feature a class 80 ductile cast iron body, hardened steel master jaws, and a steel air cylinder. They offer a maximum recommended RPM of 6400 and a jaw force variable up to 316 lbs. Repeatability is guaranteed at 0.0001" T.I.R. max, with options for higher precision.

4" (100mm) Chucks
Similar to the 3" chucks, these have a maximum recommended RPM of 6300 and a jaw force variable up to 625 lbs. They are available with different opening sizes and configurations, including counterbore and through-hole options.

Warranty
Northfield provides a warranty for their precision air chucks, ensuring reliability and performance.

Overview: This document provides detailed specifications for various models of precision air chucks, highlighting their construction, capabilities, and performance metrics. Each model is designed for specific applications, offering different jaw configurations, materials, and operational parameters.

Specifications:

Materials: The body of each chuck is made from class 80 ductile cast iron, with master jaws and wedges constructed from hardened steel. Air cylinders are typically made from steel, aluminum, or stainless steel, and are o-ring sealed for durability.
Jaw Configurations: Models are available with 2 or 3 jaw configurations, with openings ranging from .100” (2.54mm) to .250” (6.35mm).
Weight: The weight varies depending on the jaw material, with aluminum jaws being lighter than steel jaws.
Force and Repeatability: The force per jaw is variable, with maximum forces ranging from 625 lbs. (284 kg) to 2500 lbs. (1136 kg). Repeatability is guaranteed within .0001” (2.5µ) T.I.R. max, with some models offering enhanced repeatability of .000025” (0.64µ).

Performance Metrics:

Maximum RPM: The maximum recommended RPM varies by model and is influenced by the mass and center of gravity of the jaw assembly, as well as the applied air pressure. RPM values range from 2300 to 6300, depending on the model and configuration.
Operational Considerations: The maximum RPM is calculated using the listed jaw at maximum chucking pressure. Variations in jaw mass, geometry, or air pressure can affect the operable RPM.

Model Highlights:

450THR516: 4-inch, 3-jaw model with a .100” opening, suitable for high-speed applications up to 6300 RPM.
470: 6-inch, 2-jaw model with a .100” opening, offering a force per jaw up to 938 lbs. (426 kg).
600: 6-inch, 3-jaw model with a .027” opening, designed for precision applications with enhanced repeatability options.
700: 7-inch, 3-jaw model with a .100” opening, capable of handling forces up to 1667 lbs. (758 kg).
770: 7-inch, 2-jaw model with a .100” opening, offering the highest force per jaw at 2500 lbs. (1136 kg).

Conclusion: These precision air chucks are engineered for high accuracy and repeatability, making them suitable for a variety of industrial applications. The choice of model depends on specific operational requirements such as jaw configuration, force capacity, and rotational speed.

Overview: This document provides technical specifications and details for various models of precision air chucks, highlighting their repeatability, materials, and operational parameters.

Specifications:

Repeatability: Concentricity and end lengths have a maximum Total Indicator Reading (T.I.R.) of .0001 inches (2.5µ), with an option for .000025 inches (.64µ) repeatability.
Materials: The body is made of class 80 ductile cast iron, master jaws and wedges are hardened steel, and air cylinders vary between steel and aluminum with o-ring seals.
Models: Various models are detailed, including 800, 870, 1000, 1025, and 1070, each with specific jaw configurations and dimensions.

Model Details:

Model 800: 8-inch, 2-jaw with a .100-inch opening, weighing 36 lbs with aluminum jaws and 45 lbs with steel jaws. Max RPM is 2300.
Model 870: 10-inch, 3-jaw with a .100-inch opening, weighing 60 lbs with aluminum jaws and 70 lbs with steel jaws. Max RPM is 2000.
Model 1000: 10-inch, 3-jaw with a .250-inch opening, similar weight and RPM as Model 870.
Model 1025: 10-inch, 2-jaw with a .100-inch opening, similar weight and RPM as Model 870.
Model 1070: 12-inch, 3-jaw with a .375-inch opening, weighing 100 lbs with aluminum jaws and 123 lbs with steel jaws. Max RPM is 1600.

Operational Parameters:

Force per Jaw: Varies by model, ranging from 2500 lbs to 3990 lbs.
Max Recommended RPM: Dependent on jaw mass, center of gravity, and air pressure. Using different jaws or pressures can affect RPM.

Jaw Specifications:

Standard jaws are available in aluminum and mild steel, with various dimensions and chucking ranges for different series (300, 400, 600, 700, 800, 1000).
Full circle jaws are also available, with specific dimensions and chucking ranges.

Overview: This document provides detailed specifications and information about Northfield Precision Instrument Corp.'s full circle jaws for various series of chucks, including Series 600, 700, 800, and 1000. It also includes warranty information and additional services offered by Northfield.

Specifications:

Materials: The jaws are available in aluminum and mild steel.
Jaw Dimensions: The dimensions are provided in inches and millimeters for each series and material type.
Chucking Range: External and internal chucking ranges are specified for each jaw size.

Series Details:

Series 600: Includes jaw numbers AL-3-6-1 to AL-3-6-3 and ST-3-6-¾ to ST-3-6-3 with varying dimensions and chucking ranges.
Series 700: Includes jaw numbers AL-3-7-2 to AL-3-7-4 and ST-3-7-2 to ST-3-7-4 with specified dimensions and chucking ranges.
Series 800: Includes jaw numbers AL-3-8-2 to AL-3-8-4 and ST-3-8-2 to ST-3-8-4 with specified dimensions and chucking ranges.
Series 1000: Includes jaw numbers AL-3-10-2 to AL-3-10-4 and ST-3-10-2 to ST-3-10-4 with specified dimensions and chucking ranges.

Warranty: Northfield offers a 90-day warranty from the date of delivery, covering defects in material and workmanship, provided installation instructions are followed.

Additional Services: Northfield provides custom workholding solutions and special accessories such as automatic lubrication, air or spring ejectors, parts locators, and more. They cater to industries like automotive, aerospace, and medical.

Contact Information: Northfield Precision Instrument Corp. is located at 4400 Austin Blvd., Island Park, NY, with contact details provided for further inquiries.

Catalog excerpts

NORTHFIELD PRECISION INSTRUMENT CORPORATION 4400 Austin Blvd., P.O. Box 550, Island Park, NY 11558-0550 • (516) 431-1112 • Fax: (516) 431-1928 Call Toll Free 1-800-810-2482 www.northfield.com • e-mail: sales@northfield.

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Precision Air Chucks Guarantee Accuracy Within Millionths NORTHFIELD the world leader in precision workholding air chucks. Guaranteed accuracy from 0.0001" (2.5µ) to 0.000010" (0.25µ) Applications • Turning, grinding, boring, milling, measuring, inspection, material handling, robotics, CNC, EDM. • All machines: rotating, stationary, vertical, horizontal. • Universal workholding: internal, external, thin-wall, rigid. Productivity • Finger-tip control can triple output. • Extremely simple loading/unloading. No indicating or adjusting. Can be used by unskilled operators. • Automatic self-centering....

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NORTHFIELD U.S. AND METRIC All dimensions and weights listed in this catalog are in U.S. and metric equivalents. ORDERING INFORMATION To fit the custom-made air tube to your machine, we need: (1) I.D. of the spindle's rear. Within .002" (.051 mm). (2) Overall length of the spindle. (3) I.D. of the spindle's bore at midpoint for spindles over 25 inches (635mm) in length. TERMS: Net 30 days, F.O.B. lsland Park, NY Accessories Available • • • • • • • • Air tube assemblies. Manual operating valve. Adapter plate - machined to your spindle nose configuration. Stationary fixture plates. Air pressure...

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Precision Air Chucks Guarantee Accuracy Within Millionths Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 2 lbs. (.91 kg) with steel jaws: 21/2 lbs. (1.14 kg) Max. Recommended RPM* 6400 with AL-1-3-3/4 Max. Opening of Jaws .020” (0.51mm) on diameter Force per Jaw variable to 316 lbs. (144 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end lengths — .0001 (2.5µ) T.I.R. max Also available with .000010”...

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350THS 3 Inch • 3 Jaw (.060” opening) (76mm) (1.52mm opening) 1 /4” (6.35mm) Through Hole Stationary Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 2 1/2 lbs. (1.14 kg) with steel jaws: 2 7/8 lbs. (1.31 kg) Max. Opening of Jaws .060” (1.5mm) on diameter Force per Jaw variable to 316 lbs. (144 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end lengths — .0001 (2.5µ) T.I.R. max Also available with .000010”...

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Precision Air Chucks Guarantee Accuracy Within Millionths Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder aluminum and stainless steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 71/2 lbs. (3.41 kg) with steel jaws: 8 lbs. (3.64 kg) Max. Recommended RPM* 5400 with AL-1-4-3/4 Max. Opening of Jaws .250” (6.35mm) on diameter Force per Jaw variable to 645 lbs. (293 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end lengths — .0001 (2.5µ) T.I.R. max Also...

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450CB 4 Inch • 3 Jaw (.100” opening) (100mm) (2.54mm opening) 5 /16” (8.00mm) counterbore 11/2” (38.1mm) deep Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 53/4 lbs. (2.61 kg) with steel jaws: 61/4 lbs. (2.84 kg) Max. Recommended RPM* 6300 with AL-1-4-3/4 Max. Opening of Jaws .100” (2.54mm) on diameter Force per Jaw variable to 625 lbs. (284 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end lengths...

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Precision Air Chucks Guarantee Accuracy Within Millionths Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder aluminum and stainless steel, o-ring sealed, incorporated into the chuck body Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 61/3 lbs. (2.88 kg) with steel jaws: 71/2 lbs. (3.41 kg) Max. Recommended RPM* 6300 with AL-1-4-3/4 Max. Opening of Jaws .100” (2.54mm) on diameter Force per Jaw variable to 938 lbs. (426 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end lengths...

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(150mm) (2.54mm opening) 1” (25.48mm) Through Hole Rotating (150mm) (2.54mm opening) 1” (25.48mm) Through Hole Stationary Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 161/4 lbs. (7.39 kg) with steel jaws: 17 lbs. (7.73 kg) Max. Recommended RPM* 5500 with AL-1-6-1 Max. Opening of Jaws .100” (2.54mm) on diameter Force per Jaw variable to 1200 lbs. (545 kg) Repeatability concentricity — .0001 (2.5µ) T.I.R. max end...

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Precision Air Chucks Guarantee Accuracy Within Millionths (150mm) (6.35mm opening) 1” (25.48mm) Through Hole Rotating (150mm) (6.35mm opening) 1” (25.48mm) Through Hole Stationary Body class 80 ductile cast iron Master Jaws hardened steel Wedge hardened steel Air Cylinder steel, o-ring sealed Top Jaws located on hardened steel pins in master jaws & secured by socket head cap screws Weight with aluminum jaws: 161/4 lbs. (7.39 kg) with steel jaws: 17 lbs. (7.73 kg) Max. Recommended RPM* 4200 with AL-1-6-1 Max. Opening of Jaws .250” (6.35mm) on diameter Force per Jaw variable to 1200 lbs. (545 kg)...

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PRECISION AIR CHUCKS CATALOG

PRECISION AIR CHUCKS CATALOG

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