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Operating Speed:

Spindle Power:

Maximum Torque:

Input Voltage (if applicable):

Spindle Drive:

Application:

Configuration:

English or Metric:

Tool / Wheel / Work Mounting Diameter:

Tool / Workholder Mounting:

Features:

Specialty Bearings:

Help with Machine Tool Spindles specifications:

Performance Specifications
   Operating Speed:       Maximum rated rotational speed under load. 
   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.
   Spindle Power:       Maximum rotational power the spindle can provide and still operate within specifications. 
   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.
   Maximum Torque:       Maximum continuous torque transmission for which the shaft is designed.  This does not include peak ratings. 
   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.
   Input Voltage (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.
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Spindle Type
   Spindle Drive:       
   Your choices are...         
   Belt Drive       Spindle drive end has pulley for drive via a belt. 
   Gear Drive       Gear coupling for spindle to allow for high or low-speed spindle rotation. 
   Direct / Shaft Drive       Spindle is driven directly on spindle axis; drive end has shaft for coupling to drive motor. 
   Motorized       Spindle is provided with a drive motor integrally built into the spindle. 
   Hydraulic       Hydraulic or hydrostatic spindle power. 
   Pneumatic       Spindle is driven with pressurized air. 
   Other       Other unlisted or specialized drive. 
   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.
   Application:       
   Your choices are...         
   Boring       Designed for use in boring, the machining of an internal diameter in the workpiece. 
   Drilling       Designed for use in drilling operations, typically with good thrust capacity in addition to radial load rating. 
   Grinding       Designed for use with a grinding wheel, for precision size and surface finishing. 
   Hobbing       Cutting of gear tooth profiles. 
   Milling       Designed for use with milling cutters; can include a wide variety of machining operations and tools. 
   Tapping       Designed specifically for use with taps to create internal threads. 
   Test Systems       Contains design features suitable for test setups and systems, such as computer drive testing, bearing spinning and friction tests, semiconductor testing, dynamic balancing, etc. 
   Turning       Used in horizontal or vertical lathes and turning centers. 
   Wheel Dressing       Designed for use in truing, dressing, contouring, and re-profiling abrasive grinding wheels. 
   Specialty Industry       Specialty or non-machine tool industries using precision spindles include jewelry manufacturing, optical lens processing, and many others. 
   Other       Other unlisted or specialized application. 
   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.
   Configuration       
   Your choices are...         
   Cartridge       Spindle assembly that can be inserted into a stationary housing. 
   Block       Rectangular or square solid block or box housing. 
   Foot Mounted       Spindle housing can be bolted down via flanges or feet at the bottom of the housing. 
   Spindle Speeder / Head       The spindle can be mounted into the head of a milling, drilling, turning, or other machine tool.  The mounting geometry is typically a standard Morse taper or other standardized machine tool taper.  These spindles often have gearing to multiply the machine spindle speed ("spindle speeder"). 
   Angle Head       Machine head mounted spindle configured to allow right-angle or adjustable angle tool rotation. 
   Multiple Spindle Head       Multiple spindle heads mount directly onto a machine tool and allow for simultaneous milling, drilling, tapping, etc. with multiple tool spindles.  They are used to speed machining operations and for repetitive precision work such as close-tolerance center holes. 
   Other       Other unlisted, specialized, or proprietary spindle configuration. 
   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.
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Tool Mounting
   English or Metric:      Unit designation for O.D., I.D., etc.
   Your choices are...         
   English       Units are inches or fractions of an inch. 
   Metric       Units such as millimeters or centimeters. 
   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.
   Tool / Wheel / Work Mounting Diameter:       Spindle interface size refers to the diameter of the cutting tool or the bore of the grinding wheel that can be mounted to the spindle. 
   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.
   Tool / Workholder Mounting:      Mounting interface on spindle end; includes mounting options for workpieces, cutting tools, grinding wheels, etc.
   Your choices are...         
   Arbor / Shaft       Driven end is straight shaft for tool or wheel mounting. 
   Collet       Tool mounts into a collet, which is tightened down to secure the tool for operation.  Collets frequently come in standard tooling sizes and tapers. 
   Standard Bore       Straight or standard bore for tool mounting. 
   Threaded Hole       Spindle shaft contains a threaded hole for screw or stud mounting, typically for grinding wheels. 
   Flanged Bore       Tool end has a bore for location, with flange mounting feature around the bore. 
   External Taper       Spindle shaft has external taper, typically for mounting a grinding, polishing, or buffing wheel. 
   Internal Taper       Internal taper, often for accepting standard machine tool collets. 
   Wheel Collet       Specific type of external tapered nose designed to accept grinding wheel mounting. 
   Other       Other unlisted, specialized, or proprietary tool interface. 
   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.
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Spindle Options
   Features       
   Your choices are...         
   Air Purge       Feature for automatic blow-off of contamination, dust, chips, etc., at or near spindle bearings. 
   Automatic Balancing       Spindle has dynamic balancing system, which compensates for tool or wheel unbalance without extensive operator interaction.  Automatic balancing can be achieved with a variety of fluid, hydraulic, electromechanical and magnetic mechanisms. 
   Coolant Feed       Through-the-spindle coolant feed allows for direct application of coolant to the cutting or grinding operation. 
   High Frequency Drive       High frequency drives can drive a spindle at very high speeds.  These typically require separate external frequency converter. 
   Linear / Compound Motion       Spindle can move axially in addition to its rotation.  These are common in drilling and other machining operations. 
   Liquid Cooled       Liquid cooling allows for high heat dissipation capacity, and can translate into higher speed ratings. 
   Position / Encoder Feedback       Position and/or speed feedback; most typically employing an encoder, but may include resolvers or other measurement devices. 
   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.
   Specialty Bearings       
   Your choices are...         
   Air Bearings       Air bearings employ a compressed air supply to provide clearance and allow for rotary motion with no physical contact, eliminating wear and friction, and allowing for high speeds. 
   Angular Contact Bearings       Angular contact bearings allow for greater thrust capacity than radial deep groove bearings.  They are typically specified for higher compound loading applications. 
   Ceramic Hybrid Bearings       A ceramic hybrid bearing is constructed of steel inner and outer rings with ceramic (typically Si3N4balls in place of steel.  These bearings have several advantages over all steel bearings, such as higher speed and acceleration capability, increased stiffness, higher accuracy, lower friction and heat generation, reduced lubrication requirements, low thermal expansion, extended operating life.  Bearings containing all ceramic balls are also nonconductive and are commonly used in electric motor applications. 
   Hydrostatic / Hydrodynamic       Hydrostatic bearings employ a positive pressure supply that maintains clearance between the rotating stationary elements.  Hydrodynamic bearings are typically low-clearance assemblies that rely on a film of oil (and occasionally air) that develops clearance while the spindle is rotating; high startup loads must therefore be avoided for hydrodynamic spindles.  Both types of spindles feature high stiffness and long bearing life, and are often used for fine machining and finishing. 
   Magnetic Bearings       Bearing between the rotating and stationary elements is provided by magnetic field; air gap clearance is typically low.  These bearings offer virtually no rolling friction and very long life. 
   Roller Bearings       Cylindrical roller elements provide antifriction bearing.  Lubrication can be oil or grease. 
   Tapered Roller Bearings       Tapered roller bearings consist of an inner ring (cone), an outer ring (cup), a cage and rollers, which are profiled to distribute the load evenly across the roller.  They have high radial and axial (thrust) load capacity at low to intermediate speeds.  The thrust load capacity for single row tapered bearings is about 60% of the radial capacity. 
   Other       Other unlisted, specialized, or proprietary bearing configuration. 
   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.
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