Chucks Specifications

Help with Chucks specifications:

Type


	Type
	Your choices are...
	Collet Chuck		Collet chuck holders use collapsible spring collets of various types and sizes to hold workpieces of different shank sizes with one chuck. The collet is secured in the collet chuck with a collet nut, tightened to the manufacturer's specifications.
	Core Chuck / Roll Chuck		Core chucks or roll chucks have jaws which expand outward to grip the inner diameter (ID) of a roll or tube. They are used in web processing, paper roll winding, unwinding, and dispensing; label roll processing and dispensing; and other applications where webs, sheets, or fabric are rolled or unrolled. Core chucks and roll chucks often use automatic gripping that is proportional to speed or torque.
	Diaphragm Chuck		Diaphragm chucks mount the top jaws on a steel membrane or diaphragm. Typically, these top jaws are custom-fabricated for specific workholding applications. Applying hydraulic or pneumatic pressure to the inside of the diaphragm (either directly or with a cylinder) causes the membrane to bulge outward and expand the jaws. After the workpiece is loaded, the pressure is released, causing the top jaws to retract, close, and clamp the workpiece. Diaphragm chucks are often used with thin-walled or fragile workpieces that can be deformed by the pressure of power chucks or other chuck configurations. Diaphragm chucks feature a simple design for loading and unloading, and provide high repeatability.
	Draw Bar Chuck / Pull Down Chuck		With draw bar chucks and pull down chucks, the radial movement of the jaws is affected by axial actuation against a fixed, tapered surface.
	Electrostatic Chuck		Electrostatic wafer chucks are used with sophisticated semiconductor manufacturing equipment. They hold a very thin disc in a high-vacuum chamber while contacting only one side of the disc. Electrostatic chucks are made primarily of a ferroelectric alumina ceramic material.
	Gear Chuck		Gear chucks are designed to hold gears during machining operations. Chucking can be done on the major or minor diameter of the gear, but is often done on the pitch circle of the gear for feature concentricity with the gear pitch. Different chuck inserts are used to chuck different pitches. This category includes chucks for gripping straight, helical, bevel, and other gear tooth configurations.
	Grinding Chuck		Grinding chucks are used in grinding equipment. They typically have high accuracy and concentricity specifications, as well as good rigidity for tight-tolerance grinding operations.
	Safety Chuck		Safety chucks have special guards and safety features to prevent finger damage or other operator injury. They are often used with reel or roll winding and unwinding equipment. Typically, safety chucks are used in pairs. One side is motorized and the other is used as an idler. Foot and flange mounting styles are common.
	Scroll / Power Chuck		Scroll and power chucks have jaws that move together, in and out radially. Teeth on the back side engage a raised, spiral set of teeth on the face plate. Most scroll chucks require manual adjustment, often with a specialized wrench or key.
	Universal Chuck		Universal chucks have jaws that move together, toward or away from the center (i.e., self-centering, concentric). The term "universal" is sometimes used to describe chucks that can clamp both the OD and ID of a workpiece, either with a special jaw construction or by flipping the jaws around.
	Vacuum Chuck		Vacuum chucks apply a vacuum to the back of the workpiece to achieve chucking or holding action. The vacuum is supplied by an electric vacuum pump, or a Venturi vacuum generator powered by compressed air. Vacuum chucks are relatively easy to use and minimize or eliminate marking of the workpiece. Applications range from simple, traditional uses such as wood lathes to very-high-precision work such as semiconductor wafer processing. Vacuum chucks are available in a wide range of shapes and sizes.
	Other / Specialty Chuck		Other unlisted, specialized, or proprietary chuck types.
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	Application
	Your choices are...
	Drilling / Boring		Chuck is suitable for drilling or boring applications.
	EDM		Chuck is suitable for electrical discharge machining (EDM) applications.
	Grinding		Chuck is suitable for grinding applications
	Lathe / Turning		Chuck is suitable for lathes or other turning applications.
	Milling / Machining Center		Milling chucks are designed to hold machine tools for milling operations. They have high rigidity and torque ratings, and prevent the accidental removal of tools.
	Wafer Chuck		Wafer chucks are used to handle semiconductor wafer handling during wafer processing applications. Common work clamping technologies include vacuum and electrostatic.
	Other Workholding		Other, unlisted workholding application.
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	Chuck Geometry
	Your choices are...
	Rectangular / Square		The chuck holding surface is rectangular or square in shape.
	Round		The chuck holding surface is round in shape and is usually used in applications requiring the work to rotate.
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Specifications


	Number of Jaws:
	Your choices are...
	None / NA		The chuck does not have jaws, or does not have top jaws for work holding.
	2		The chuck has two jaws, typically opposite one another.
	3		The chuck has three jaws, typically 120° apart. Three-jaw chucks provide more adjustment flexibility and centering than two-jaw chucks.
	4		The chuck has four jaws that are evenly spaced.
	5		The chuck has five jaws that are evenly spaced.
	6		The chuck has six jaws that are evenly spaced.
	>6		The chuck has more than six jaws.
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	Diameter:		Chuck size is the total outside diameter (OD) or size of the chuck. This measurement may exceed the chucking diameter or size.
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	Width		The width of the chuck workholding surface (for square and rectangular chucks).
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	Length		The length of the chuck workholding surface (for square and rectangular chucks).
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Capacity / Jaw Opening:		Capacity or jaw opening is the size of the workpiece that can be chucked or clamped. For jaws that close on-center, suppliers specify minimum and maximum diameter values. For flat chucks such as magnetic chucks and electrostatic chucks, capacity refers to the size of the clamping or chucking material.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Throat / Depth:		Throat is the depth of the workpiece insertion or engagement into the chuck.
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	Rated Speed:		This is the maximum rated speed for the chuck (if applicable).
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Clamping / Holding Force		The chucking, clamping, or holding-force capacity of the chuck.
	Search Logic:		User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.

	Chuck Actuation:
	Your choices are...
	Electric		The chuck is powered with an electric motor, or chucking is achieved with electromagnetic or electrostatic force.
	Hydraulic		Chuck clamping is actuated and disengaged with hydraulic power. Hydraulic chucks are common in machine shop applications.
	Mechanical		The chuck is adjusted and tightened by hand or with hand tools.
	Pneumatic		Chuck clamping is actuated and disengaged with compressed air via pneumatic components such as cylinders or rotary actuators.
	Other		Other unlisted chuck actuation or workpiece holding method.
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Chuck Features & Materials



	Your choices are...
	OD Clamping		The chuck is designed to clamp onto the outer diameter (OD) of the workpiece or tool. OD clamping is common with machining chucks used in applications such as milling, drilling, or turning.
	ID Clamping		The chuck is designed to clamp onto the inner diameter (ID) of the workpiece or tool. ID clamping is common in applications such as machining and grinding, and is used to process workpieces such as pipes or internal gears.
	Brake		The chuck has an integral brake that can quickly slow or stop the chuck's rotation.
	Compensating Chuck		Compensating chucks maintain the workpiece position when the jaw is opened or closed.
	Independent Jaws		The chuck's jaws may be adjusted, tightened, or centered one at a time, and without affecting the position or adjustment of the other jaws.
	Interchangeable Jaws / Inserts		The chuck's design facilitates the replacement of jaws or jaw inserts. Applications for interchangeable jaws include: using different jaw sets with different chucking sizes; replacing hardened jaws or inserts with soft, non-marring inserts; and using different jaw lengths for different workpiece configurations.
	Keyless		The chuck's design permits simple, manual chuck adjustments (e.g., tightening) without the use of special tools such as a wrench or chuck key.
	Locking		The chuck's jaws can be locked or set to provide holding force, even when the actuation mechanism (e.g., hydraulic or pneumatic pressure) is removed.
	Machinable Jaws / Inserts		The chuck's jaws or inserts can be machined for custom workholding applications.
	Quick Change		The chuck or chuck jaws can be removed rapidly from the machine or test fixture, and quickly replaced with another chuck or set of jaws.
	Quick Release		The chuck permits the rapid release or disengagement of chucking force. Quick-release chucks are used for rapid, automated tool or workpiece changing.
	Rectangular / Square Workholding		Chucks are designed to hold square, rectangular, or other non-round workpieces such as rectangular tubes, angles, channels, square stock, etc.
	Retracting Jaws		The chuck's jaws can retract during operation. Chucks with retracting jaws often incorporate auxiliary drive mechanisms such as pins, vanes, or a face driver for maintenance of constant-drive torque. With lathes, retracting jaws allow for part-turning farther up the workpiece.
	Self-Centering		All of the chuck's jaws contract and expand together, so that the workpiece or tool is center-chucked automatically at any jaw diameter.
	Soft Jaws / Protective Covers		The chuck's jaws have a soft or protective surface to avoid marring the workpiece. These devices are also used to chuck or clamp soft materials or fragile shapes without deformation.
	Through-Hole		The chuck has a center through-hole for chucking or gripping long sections of stock, pipe, etc.
	Ambient		Ambient chucks, also referred to as non-thermal chucks, operate at the ambient room temperature and have no heating or cooling capabilities.
	Thermal		Thermal chucks have integral heating or cooling capabilities.
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	Materials of Construction:
	Your choices are...
	Aluminum		Chucks are made of aluminum, a relatively soft, lightweight, non-magnetic, corrosion-resistant material. Aluminum chucks are used to avoid marring workpieces made of harder metals such as iron or steel.
	Brass / Bronze		Chucks are made of or lined with brass or bronze. Brass chucks and bronze chucks avoid workpiece marring while still providing suitably rigid and precise holding and positioning.
	Cast Iron		Chucks are made of cast iron, a common, rugged machine-tool material which provides some shock and vibration absorption. Cast iron is a natural composite whose primary constituent is iron, with trace amounts of carbon and/or silicon.
	Ceramic		Chucks are made of ceramics, materials produced by the high- temperature fusion of minerals in a controlled environment that is designed to impart specific physical and electrical characteristics. Generally, ceramics are electrical insulators or semiconductors, and feature high resistance to thermal breakdown, erosion, and surface degradation (e.g., marring or pitting). Ceramic chucks are used in highly specialized applications such as semiconductor wafer-holding during processing.
	Plastic		Plastic chucks are very soft. They are used to prevent marring or damage to the workpiece, and in applications which require materials with good electrical or thermal insulation.
	Stainless Steel		Stainless steel chucks are made of specific, corrosion-resistant grades of steel. Typically, these metals are either non-magnetic or less magnetic than standard alloy steels. Stainless steel is less suited to hardening and certain types of surface finishing.
	Steel		Steel chucks are made of carbon or alloy steels, tool steels, or hardened steels. Steel is a common chuck material.
	Other		Other unlisted, specialized, or proprietary chuck materials.
	Search Logic:		All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.