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Output Shaft Speed:

Output Torque:

Continuous Output Power:

Speed Control:

Technology:

Output Shaft Position:

Shaft Orientation:

Mounting:

Integrated Motor?

Motor Input:

Phase (AC Only):

Integrated Gears?

Continuously Variable?

C-flange Adapters?

Hollow Shaft?

Speed Feedback?

Reversible?

Motor Enclosure Options:

Special / Extreme Environments:

Help with Adjustable Speed Drives specifications:

Performance Specifications
   Output Shaft Speed       No load rotational speed of output shaft at rated terminal voltage. 
   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.
   Output Torque       Output torque capability of the drive under constant running conditions. 
   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.
   Continuous Output Power:       Mechanical power provided by the drive output. 
   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.
   Speed Control       
   Your choices are...         
   Handwheel       The manual handwheel provides simple, local speed control. 
   Lever       A simple local lever control is used for speed adjustment. 
   Screw       Screw controls give very precise control of speed change and expedite remote control attachments. 
   Electric       Electric speed controls, such as a pilot motor, with the shifting mechanism mounted at the drive and a remote operator's control point (open- or closed-loop). 
   Solid-State       Solid-state refers to any electronic circuit made of solid, singular components, such as chips and transistors. Solid-state devices function exclusively with internal electromagnetic signals, and do not use any mechanical action. 
   Other       Other unlisted, specialized, or proprietary 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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Drive Type
   Technology       
   Your choices are...         
   Traction Drives       Traction drives depend upon friction between a speed adjusting mechanism and specially shaped input and output plates to achieve adjustable speed with relatively high efficiency. In one common type of traction drive, the motor drives an input cone that transmits the power from the cone to an output ring connected to the output shaft. The speed adjusting screw moves the motor and input cone up and down changes the point of contact between the cone and ring changing, the speed ratio of the drive as much as 10:1. With another common type of traction drive, a series of balls mounted on tiltable shafts press upon the faces of the input and output cones. A speed adjusting lead screw tilts the ball shafts to increase or decrease the effective speed ratio of the drive transmission by as much as 8:1. Traction drives are best suited for applications with steady state loading. 
   Belt and Chain Drives       Belt and train drives operate with adjustable diameter sheaves or pulleys.  As the diameter of one sheave increases, the other decreases, and constant belt or chain length is maintained. 
   Gear Drives / Differentials       Gear drives are the most durable, rugged, and efficient of all adjustable-speed drives, but they are capable of providing only a specific number of fixed gear ratios. They are normally chosen for applications involving heavy loads or requiring long, trouble-free life. Generally, gear drives are more expensive than belt or chain drives.  A special type of gear drives, differentials, is a set of gears with three independent, rotating members with a speed and torque relationship to each other.  Differential efficiency is a function of the relative speed of the three elements. As relative speeds increase, the inherent losses due to basic gear efficiency, seals, and bearings also increase; thus, efficiency decreases. 
   Hydraulic Drives       There are two main methods of hydraulically varying the speed of the driven load when the driving motor is operating at a constant speed.  The fluid coupling is a torque coupling whereby the input torque is equal to the output torque. This type of coupling suffers from very high slip losses, and is used primarily as a torque limited coupling during start with a typical slip during run of 5%. The constant power law still applies, but the power in the driven load reduces with speed. The difference between the input power and the output power is loss power dissipated in the coupling.  In the case of a hydraulic pump and motor, the induction motor operates at a fixed speed, and drives a hydraulic pump, which in turn drives a hydraulic motor. In many respects, this behaves in a manner similar to a gearbox in that the hydraulic system transfers power to the load. The torque will be higher at the load than at the motor for a load running slower than the motor. 
   Eddy Current Drives       An eddy current drive is an adjustable speed drive in which a constant speed AC motor drives a drum assembly.  Torque is transmitted from the input drum to an output rotor and output shaft by varying a magnetic field between the input drum and the output rotor. 
   Magnetic Coupling       The magnetic coupling replaces the physical connection between motors and loads with a gap of air.  Motor torque is transferred to the load across this air gap. By varying the air gap between the magnets and conductor the strength of the magnetic field is changed and the output speed is controlled. 
   Other       Other unlisted, specialized, or proprietary configuration.  Other configurations may include cable drives or industrial transmissions. 
   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.
   Output Shaft Position       
   Your choices are...         
   Horizontal       The drive is mounted with the output shaft in the horizontal position. 
   Vertical Up       The drive is mounted with the output shaft in the vertical up position.  In order for a shaft to be orientated in a vertical position, considerations need to be made regarding lubrication. 
   Vertical Down       The drive is mounted with the output shaft in the vertical down position.  In order for a shaft to be orientated in a vertical position, considerations need to be made regarding lubrication. 
   Other       Other unlisted, specialized, or proprietary 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.
   Shaft Orientation       
   Your choices are...         
   In-line       The input (driving) shaft and the output (driven) shaft can be connected with an imaginary axial line through the center of each shaft at 0° angle. 
   Offset Parallel       The input (driving) shaft and the output (driven) shaft are parallel, however they reside in the gearbox at different heights above the horizon. 
   Right Angle       The input (driving) shaft and the output (driven) shaft are perpendicular to one another. This is most common with worm gear speed reducers. 
   Other       Other unlisted, specialized, or proprietary shaft orientation, such as nonperpendicular angled shafts, where the input (driving) shaft and the output (driven) shaft are not perpendicular to one another, but are angled. 
   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.
   Mounting       
   Your choices are...         
   Base       The drive is mounted at the base with the use of external hardware (screws, bolts, rails, etc.).  Sometimes referred to as foot mount. 
   Flange       The drive is equipped with integral flanges so that it can be mounted with the use of external hardware (screws, bolts, rails, etc.). 
   Other       Other unlisted, specialized, or proprietary 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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Motor
   Integrated Motor       The "packaged" drive consists of the adjustable speed section and an electric motor.  The unit may also include a geared reducer. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Motor Input       
   Your choices are...         
   115 / 120V 60 Hz       115 / 120V is standard residential or commercial voltage for 60 Hz frequency (North America). 
   208-230 / 240V 60 Hz       These are for 60 Hz frequency (North America). 
   460 / 480V 60 Hz       These are for 60 Hz frequency (North America). 
   575 / 600V 60 Hz       These are for 60 Hz frequency (North America). 
   50 Hz / International Power       International voltage levels, such as those common in Asia and Europe, and includes all 50 Hz frequency. 
   400Hz / Aerospace       Motors and other components using 400 Hz frequency are primarily used for aerospace applications. 
   DC Motor       A motor using either generated or rectified DC power. 
   Hydraulic Motor       Hydraulic motors are powered by pressurized hydraulic fluid and transfer rotational kinetic energy to mechanical devices. 
   Other       Other unlisted, specialized, or proprietary voltage / frequency motor. 
   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.
   Phase (AC Only)       
   Your choices are...         
   Single Phase       Standard commercial and residential power is single phase, meaning one sinusoidal or other alternating voltage pattern. 
   Three Phase       Three-phase power contains three simultaneous sinusoidal or other alternating voltage patterns, typically 120° out of phase with each other.  Higher power efficiency and smoothness of operation is possible with three-phase operation. Three-phase power is most typically used for industrial or high power motors. 
   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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Features
   Integrated Gears       The "packaged" drive consists of the adjustable speed section and a geared reducer.  The unit may also include an electric motor. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Continuously Variable       Continuously variable drives and transmissions provide an uninterrupted range of speed ratios, unlike a normal drive or transmission that provides only a few discrete ratios. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   C-flange Adapters       C-flange adapters are supplied for connecting customer supplied motors. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Hollow Shaft       Output shaft has a hole or bore that can accept a shaft.  Outputs with collets for tool bits are one example. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Speed Feedback       The drive is equipped with speed feedback for indication of the rotational speed of the output shaft.  Feedback may be magnetic sensor, tachometer, potentiometer, encoder, or current. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Reversible       The output shaft can rotate clockwise or counter-clockwise. 
   Search Logic:      "Required" and "Must Not Have" criteria limit returned matches as specified. Products with optional attributes will be returned for either choice.
   Motor Enclosure Options       
   Your choices are...         
   Open Frame / Frameless       Motor with minimal or frame-like support but no overall casing. 
   Drip-proof       Drip-proof motors contain ventilation openings that are designed such that drops of liquid or solid particles falling on them from any angle within 15 degrees of vertical cannot enter the motor. 
   Dust-proof       Dust-proof motors protect against dust infiltration with features such as total enclosure and labyrinth seals for shafts. 
   Totally Enclosed       A totally enclosed drive has an enclosure that prevents free exchange of air between the inside and the outside of the enclosure.  Common ratings are TEFC (fan-cooled) and TENV (non-ventilated). It is not an airtight rating.  These drives are most frequently used in potentially contaminated environments. 
   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.
   Special / Extreme Environments       
   Your choices are...         
   Cleanroom Use       Cleanrooms are classified by particulate size and density in the ambient air.  One such rating method classifies rooms according to number of particles larger than 0.5 micron in one cubic foot of air; there are various governmental, metric, and international standards.  Motors rated for suitability in a cleanroom will identify the particular standard for which they are rated. 
   Cryogenic Use       Motors with a cryogenic rating are constructed for extremely low ambient temperatures such as 20 K and below. 
   Explosion-proof       Explosion-proof drives have totally enclosed housings that are constructed to withstand internal explosion of a specified gas, vapor or dust. Should such an explosion occur, the enclosure would prevent the ignition or explosion of the gas or vapor surrounding the motor enclosure. Several explosion-proof ratings are governed by Underwriter's Laboratories (UL). 
   Radiation-hardened       Radiation-hardened motors are constructed of materials designed to withstand high-energy gamma radiation.  Ratings are expressed in units such as permissible radiation absorbed doses (RADs) in total accumulated dose (TAD). 
   Vacuum Use       Vacuum-rated motors incorporate features such as lubricant vapor pressure below rated ambient vacuum and construction techniques such as degassing during manufacture to prevent motor use emissions 
   Washdown Duty       Washdown duty drives are designed to perform better in wet environments including food processing plant and dairies as well as other high humidity areas. 
   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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