Belts and pulleys, sprockets and chains, gears, and other drive components used to transmit power.
Power Transmission Categories

Adjustable Speed Drives (215 suppliers)

Adjustable speed drives alter the speed of a driven shaft to a speed selected by an operator.

ANSI Roller Chain Sprockets (247 suppliers)

Roller chain sprockets engage chain drives in power transmission and conveyor systems, though sprockets can engage any perforated material. Chain drives can be highly efficient and can produce a mechanical advantage as speed reducers/increasers. Sprockets conforming to ANSI standard B 29.1 are not meant to engage roller chains of any other parameter. ANSI conforming roller chain is smaller and somewhat weaker than its European counterpart.

Ball Screws (233 suppliers)

Ball screws convert rotary motion to linear motion, or torque to thrust, and vice versa. They are primarily a power screw with a train of ball bearings riding between the screw and the nut in a recirculating track.

Belt and Chain Tensioners (87 suppliers)

Belt and chain tensioners apply and maintain correct tension on power transmission drive systems.

Constant Velocity Joints (CV Joints) (17 suppliers)

Constant velocity (CV) joints are mechanical power transmission components that provide rotational power at various angles. They provide the same output velocity in relation to the input velocity, independent of the angle they are operated at.

Conveyor Belts (489 suppliers)

Conveyor belts are used in a wide variety of material transport applications such as manufacturing, food processing, and heavy industry. Belt construction and belt materials are often application-specific.

Conveyor Chain (179 suppliers)

Conveyor chain is used for material conveyance under harsh conditions, in specialty applications, or when material can be allowed to fall through gaps in the conveying surface.

Conveyor Sprockets (97 suppliers)

Conveyor sprockets (mill sprockets, engineering class sprockets, engineered sprockets) are used in conjunction with conveyor chains or conveyor belts.

Differentials and Axles (52 suppliers)

A differential is a mechanical connection that translates rotational motion from a source to two axles. The driveshaft generally runs the length of the vehicle, from the energy input (a motor) to the energy output (the wheels). The axle of the driving wheels is split, with the driveshaft transferring motion through gearing arrangements to maintain a uniform direction and speed of the (live) axles. This arrangement is very common in rear-wheel drive cars and trucks, but is also employed in aircraft, production machinery and equipment, trains, and ships.

Flat Belt Pulleys (81 suppliers)

Flat belt pulleys are used in transmission systems that are driven by flat belts.

Flat Belts (203 suppliers)

Flat belts are used in transmission and conveying systems. They feature transmission efficiency, cost effectiveness and ease of installation and use. Typical belt applications include conveyors, machine tools, and heavy industrial equipment.

Flexible Couplings (451 suppliers)

Flexible couplings connect rotating members while allowing some degree of angular or parallel misalignment.

Flexible Shafts (32 suppliers)

Flexible shafts provide rotary power transmission along curved or adjustable axes. They are used in a wide variety of remote control, valve actuation, and power transmission applications.

Fluid Couplings (53 suppliers)

Fluid couplings are torque-transmitting couplings that use hydraulic oil or water to transmit power. They differ from torque converters in that the input torque is equal to the output torque (no multiplication of torque).

Flywheels (24 suppliers)

Flywheels have a high mass and are connected to a rotating shaft that smoothes the delivery of torque, or turning power, from a motor or engine. The inertia of flywheels allows them to absorb and release energy with little change in speed.

Gearboxes and Gearheads (964 suppliers)

Gearboxes and gearheads, also called gear reducers or speed reducers, are power transmission devices that use a gear arrangement in an enclosed housing to transfer energy, increase torque and reduce speed from one device to another. Gearboxes may also be referred to as gear reducers or speed reducers.

Gears (2,231 suppliers)

Includes all power transmission gear types, geometry and materials, including English and metric designs.

Idler Pulleys (73 suppliers)

Idler pulleys are used to take up slack, change the direction of transmission, or provide clutching action.

Index Drives (23 suppliers)

Index drives are used to start and stop a table, conveyor or other equipment at precise intervals. Types of index drives include cam index drives, ring index drives, and roller gear index drives.

ISO Roller Chain Sprockets (189 suppliers)

Roller chain sprockets engage chain drives in power transmission and conveyor systems, though sprockets can engage any perforated material. Chain drives can produce a mechanical advantage as speed reducers/increasers. ISO sprockets are designed to engage British Standard Chain and conform to ISO standard R606. These sprockets are not interchangable with ANSI defined sprockets.

Lead Screws and ACME Screws (65 suppliers)

Lead screws and ACME screws are used to drive a nut in linear motion via direct contact between the screw and the nut. Lead screws usually incorporate proprietary screw and nut geometries and materials, and can be configured in zero-backlash arrangements.

Leaf Chain (70 suppliers)

Leaf chain is a rollerless chain that is commonly used on forklift trucks and in other material handling applications.

Linear Shafts (91 suppliers)

Linear shafts are elongated, rod-shaped devices that provide linear or rotary motion for power transmission applications.

Line-shaft Spools (5 suppliers)

Line-shaft spools are mounted to the drive shaft of a line-shaft conveyor. A belt transmits power from the spool to drive individual conveyor rollers.

Magnetic Couplings (19 suppliers)

Magnetic couplings are non-contact couplings which use a magnetic field to transmit torque from one rotating member to another.

Mechanical Feedthroughs (34 suppliers)

Mechanical feedthroughs transmit mechanical motion through the walls of a vacuum system. Both linear and rotary feedthroughs are included in this grouping.

Motor Flange Adapters (5 suppliers)

Motor Flange Adapters are used on motors and gearheads to convert standardized flange sizes from one size to another.

Power Take-offs (PTO) (56 suppliers)

Power take-offs (PTOs) are extensions of a vehicle's drive train that can be engaged to power auxiliary equipment such as plows, augers, winches, and many other material handling, construction, and agricultural implements.

Precision Locknuts (84 suppliers)

Precision locknuts are used to secure bearings, gears, and other power transmission products to shafts and spindles.

Precision Shafting (80 suppliers)

Precision shafting provides the highest degree of overall accuracy, concentricity, straightness and surface perfection attainable in commercial practice.

Pump Drives (13 suppliers)

Pump drives take an input rotational power source and route it to hydraulic pumps via gears or other means. The pumps are mounted on the drive housing.

Ratchets and Pawls (27 suppliers)

Ratchets and pawls are mechanical gearing used to transmit intermittent rotary motion. They permit a shaft to rotate in one direction, but not in the opposite one.

Rigid Couplings (218 suppliers)

Rigid couplings connect rotating members such as shafts. They secure onto both members and provide transmission of torque and motion.

Roller Chain (317 suppliers)

Roller chain is used in power transmission applications. Products are characterized by ANSI and BS/DIN standard sizes.

Roller Screws (26 suppliers)

Roller screws convert rotary to precise linear motion in a similar manner to ball screws or lead screws.  Due to the greater number of contact points of the rollers compared to balls or thread on thread contact, a roller screw provides higher stiffness and smooth motion.

Rotary Shafts (154 suppliers)

Rotary shafts are elongated, rod-shaped devices that rotate about a longitudinal axis and transmit torque. They are similar in shape to linear shafts, but are designed to withstand torsional forces.

Round Belt Pulleys (59 suppliers)

Round belt or pulleys are used in mechanical lifts and transmissions with o-rings, round belts, cables, ropes, or wires.

Round Belts and O-ring Belts (75 suppliers)

Round belts and o-ring belts are light-to-medium duty power transmission belts. They can be solid or hollow, and can easily be used in 3-D applications.

Shaft Collars (150 suppliers)

Shaft collars attach to shafts and are used as stop features or targets for devices such as tachometers.

Shaft-Hub Locking Devices (86 suppliers)

Shaft-hub locking devices frictionally clamp gears, pulleys, flywheels, and other components to a shaft without the need for threads or keys.

Silent Chain (24 suppliers)

Silent chain or inverted-tooth chain features teeth on its links that engage the sprocket teeth.  Silent chain can be wide and is used in a variety of power transmission and conveying applications.

Slewing Drives (20 suppliers)

Slewing drives are a type of special gearbox designed to translate axial movement, typically of a worm gear, to radial movement. Typical applications of slewing drives include wind turbines, solar tracking systems, satellite broadcasting systems aerospac

Slip Rings (110 suppliers)

Slip rings are metal rings that provide a continuous electrical connection through brushes on stationary contacts. They are generally mounted on the rotating part of a machine.

Timing Belts (inch) (234 suppliers)

English pitch timing belts mate with same-pitch timing pulleys in power transmission systems where maintenance of speed ratio is an important design consideration. English pitch is the distance between belt teeth based on inches (in).

Timing Belts (metric) (232 suppliers)

Metric pitch timing belts mate with same-pitch timing pulleys in power transmission systems where maintenance-of-speed ratio is an important design consideration. Metric pitch is the distance between belt teeth based on millimeters (mm).

Timing Pulley Flanges (25 suppliers)

Timing pulley flanges are used to maintain belt contact with a pulley in a transmission application.

Timing Pulleys (inch) (176 suppliers)

Timing pulleys mesh with same-pitch timing belts on synchronous drives where maintenance of speed ratio is important. These pulleys have an inch-based pitch designation.

Timing Pulleys (metric) (176 suppliers)

Timing pulleys mesh with same-pitch timing belts on synchronous drives where maintenance of speed ratio is important. These pulleys have a millimeter-based pitch designation.

Universal Joints (157 suppliers)

Universal joints are flexible mechanical connections used to transmit rotary motion from one shaft to another shaft that is not in line with the first, or when alignment varies during service.

Variable Transmissions (95 suppliers)

Variable transmissions are used in industrial applications to alter the speed of an output shaft.

V-Belt Pulleys (214 suppliers)

V-belt pulleys or sheaves mate with drive belts in numerous power transmission applications. They are made in many configurations such as tension idlers and variable speed/ratio pulleys.

V-Belts and V-Ribbed Belts (371 suppliers)

V-belts and V-ribbed belts are power transmission drive belts with a triangular or trapezoidal cross section. They are available in a variety of belt materials, reinforcement styles, and speed configurations.

V-ribbed Pulleys (33 suppliers)

V-ribbed pulleys or sheaves have a series of V-shaped ribs that mate with V-ribbed belts. They are used in numerous power transmission applications.
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