Transmission | McMaster-Carr

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Compliant with Exemptions

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Thread Size

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Bearing Type

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Combined Radial and Thrust

Combined Radial, Thrust, and Moment

37,539 Products

Most Likely Products

Gear Boxes

Adjust motor speed to achieve the right torque for your machine; transmit motion at a 90° angle

170 products

Oil Additives

Enhance the performance of oil and extend its life

7 products

All Results

Power Transmission

Gear Boxes

Adjust motor speed to achieve the right torque for your machine; transmit motion at a 90° angle

170 products

Gears and Gear Racks

Connect two rotary shafts to change a system's speed, torque, and angle

966 products

Gear Box Mounts

Secure gear boxes that can’t be attached directly to a machine or other surface

6 products

Gear Stock

Machine your own gears to an exact face width and shaft diameter

18 products

Sprockets

Mount directly onto a shaft to transmit rotary motion and torque

3,407 products

Roller Chain and Links

Mate with sprockets to transmit power between rotating shafts

574 products

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

721 products

Timing Belt Pulleys

Pair with a timing belt to transfer motion from a rotating shaft

934 products

V-Belt Pulleys

Pair with a V-belt to transfer motion from a rotating shaft

607 products

Inverted-Tooth Chain and Links

Smoothly transmit power between rotating shafts with minimal vibration and noise

6 products

Inverted-Tooth Chain Pins

Replace the pins in your inverted-tooth chain or link two chains together

6 products

Leaf Chain and Links

Pair with flat-belt pulleys for low-speed pulling and to counterbalance machinery

9 products

Round Belt Pulleys

Pair with a round belt to transfer motion from a rotating shaft

36 products

Timing Belt Pulley Stock

Machine your own timing belt pulleys to fit an exact width and shaft diameter

17 products

Flat Belt Pulleys

Pair with a flat belt to transfer motion from a rotating shaft

56 products

Electric Gearmotors

A motor and speed reducer in one to slow speed and increase torque in AC- or DC- power applications

304 products

Electric Motors

Keep machinery and equipment moving with AC or DC power

361 products

Stepper Gearmotors

Stepper motor and gearbox in one for high torque in areas large motors won’t fit

20 products

Stepper Motors

The motor shaft turns in small, equal increments for precise positioning

197 products

Hydraulic Motors

Power equipment where electric motors aren't safe and air-powered motors aren't strong enough

6 products

Air-Powered Gearmotors

A motor and speed reducer in one to slow speed and increase torque in air-powered applications

16 products

Air-Powered Motors

A safe alternative to electric motors for harsh areas since they won’t spark or overheat

23 products

Servomotors

Create rotary motion with accurate positioning and fine control over speed and torque

96 products

Motor Mounts

Adjust motor positions in belt-driven systems to increase efficiency and reduce wear on components

34 products

Shafts

Transmit power, motion, and speed between machine components

3,182 products

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

174 products

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

2,110 products

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

56 products

Flexible Shafts

Snake around curves and obstructions to transmit rotary motion along any path

41 products

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

54 products

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

1,067 products

Roller Bearings

Support higher loads than ball bearings, but run at lower speeds

409 products

Bearing Heaters

For correct installation on shafts, heat bearings to expand them

9 products

Ball Bearings

Create less friction than other bearings for use at high speeds

2,188 products

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

1,073 products

Pivot Bearings

Best for applications that require small, precise oscillating motion with limited twisting

20 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

3,407 products

Flanged Sleeve Bearings

A sleeve and thrust bearing in one to support both parallel and perpendicular loads

2,013 products

Electric Actuators

Push and pull loads with more precise positioning than air and hydraulic cylinders

103 products

Clutch/Brakes

Control when to transmit power with a clutch and when to hold a load in place with a brake

2 products

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

112 products

Brake and Clutch Friction Lining

Replace the lining in brakes and clutches; also known as friction material

145 products

Hydraulic Actuators

Turn heavy loads to do everything from opening tank doors to pivoting conveyors

16 products

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

1,796 products

Shaft Collars

Hold and position parts on a shaft, or limit shaft movement

2,803 products

Ball Screw/Splines

Transmit rotary power, move loads along the shaft, or do both at once

3 products

Ball Screws and Nuts

Internal ball bearings roll on screws for low friction when moving components at high speeds

200 products

Lead and Ball Screw End Supports

Brace and secure the ends of lead screws and ball screws

16 products

Positioning Slides

A lead screw drives the carriage for accurate positioning in laboratory and production equipment

50 products

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

808 products

Speed Limiters

Control the speed of movement for attached components such as doors, panels, and drill presses

137 products

Splines and Spline Bearings

Transmit rotary power or move loads along the length of splines

35 products

Roller Screws and Nuts

More contact points to move heavier loads than ball and lead screw assemblies

8 products

Lubricating

Oil Additives

Enhance the performance of oil and extend its life

7 products

Electrical

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

17 products

Sensor Switches

Detect moving objects from a distance, triggering a circuit to open or close

682 products

Photoelectric Switch Reflectors

Pair with sensor switches to reflect light back at them

38 products

Programmable Logic Controllers

Program complex automation jobs by combining the functionality of a relay, timer relay, and switch

8 products

Programmable Logic Controller Input and Output Modules

Connect switches, transmitters, and actuators to your PLC for complex automation jobs

59 products

Programmable Logic Controller Communication Modules

Connect and communicate simultaneously with multiple automation devices

12 products

Ethernet Switches

Expand your data network by connecting computers, printers, and servers

60 products

IO Link Connectors

Remotely view measurements, adjust settings, and identify errors in sensors and actuators

24 products

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

1 product

Linear Motion Position-Measuring Transmitters

Measure the position of an object moving in a straight line; also known as string pots

5 products

Motor Speed Controls

Manage the speed of AC and DC motors

35 products

Light Curtains

Immediately cut power to machinery when anything blocks the light beam

18 products

Light Switch Sensors

Automatically turn lights on and off when you enter and exit rooms

21 products

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

4 products

Rotary Encoders

Track the distance, direction, and speed of travel of motor shafts, conveyors, and wheels

8 products

Conductivity Controllers

Turn pumps, mixers, and valves on and off based on a solution’s conductivity

2 products

Multifunction Chemistry Controllers

Use pH or oxidation reduction potential (ORP) levels to turn equipment on or off

2 products

Switch Mounts

Mount sensor switches to panel cutouts, tank walls, or conveyors

2 products

IO Link Programmers

Configure your IO Link devices without a PC, outlet, or separate software

1 product

Sensor Switch Transmitters

Monitor objects, switch equipment on and off, and send data to control systems with a single device

13 products

Electrical Cords

Connect equipment and devices to a power supply

2,391 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

207 products

Patch Panels

Expand and reconfigure a data network when space inside your enclosure is limited

1 product

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

28 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

107 products

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

18 products

Wire Splices

Join wire and protect the connection

14 products

Development Board Cords

Connect your development board to components such as sensors and actuators

7 products

Electrical Cord Reels

Neatly store electrical cords for easy access

104 products

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

157 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

106 products

Electrical Connector Caps

Protect data connectors when not in use

6 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

5 products

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

57 products

Telephone Wiring Blocks

Keep telephone cable organized and accessible

1 product

Power Over Ethernet Injectors

Power devices such as routers and wireless access points in areas lacking a power outlet

5 products

Grounding Rings

Create a pathway for stray currents to prevent damage to bearing surfaces in AC motors

20 products

Building and Machinery Hardware

Garage Door Opener Receivers

Wire to automatic overhead door openers to accept signals from remote and keypad transmitters

1 product

Garage Door Opener Transmitters

Send signals to receivers to open and close automatic overhead door openers

8 products

Control Cables

Weave around obstructions to operate valves, throttles, and other machinery from a distance

84 products

Measuring and Inspecting

Inertial Measurement Units

Mount to robot arms, cranes, and vehicles to accurately track their movements

1 product

Position Indicators

Track components on rotating spindles or lead screws to help adjust machinery quickly and precisely

2 products

Weather Stations

Measure multiple weather conditions at the same time

3 products

Air Particle Counters

Monitor indoor dust levels and measure filter efficiency in HVAC systems

1 product

Load Cell Junction Boxes

Join multiple load cells to combine their weight measurements

2 products

Chemistry Meters

Take water-chemistry measurements more precisely than test strips and swabs

24 products

SPC Wireless Receivers

Connect to a computer to receive measurements from an SPC wireless transmitter

6 products

Cords for Measuring Tool Data Processors

Connect measuring tools with SPC output to a processor for uploading data

23 products

Thermometers

Monitor temperature in tanks, pipes, control panels, and other equipment

16 products

Light Meters

Measure light quality and intensity

7 products

SPC Wireless Transmitters

Send data from measuring tools with SPC output to a wireless receiver

8 products

Material Handling

Pulleys

Mount or suspend to guide wire rope for lifting and pulling loads

346 products

Jacks

Lift, hold, push, and position heavy objects

5 products

Conveyor Roller Bearings

Replace bearings on conveyor rollers, or press into tubing or pipe to create a roller

41 products

Heating, Ventilation, and Air Conditioning

Fan Motors

Replace fan motors or build your own fan

22 products

HVAC Flame Detectors

Replace flame detectors in HVAC equipment such as furnaces, ovens, water heaters, and boilers

1 product

Communication

Antennas

Mount on the outside of a vehicle for better radio reception

1 product

Telephone Connectors

Replace the plug on your phone cord, or extend your line by connecting cords together

12 products

Telephone Splitters

Connect multiple phone lines to a single telephone jack

4 products

Telephone Cords

Connect telephones to data outlets

9 products

Radios

Everything from walkie talkies to CB and AM/FM radios

14 products

Display Screens

Display text, numbers, symbols, and other information from your electronics

27 products

Computer Monitors

Display information in tough conditions such as on factory floors and outdoor jobsites

9 products

Fluid Handling

Pressure Transmitters

Send pressure readings to controllers and remote displays

370 products

RTDs

Measure and transmit liquid, gas, and surface temperature more precisely than thermocouples

40 products

Liquid-Level Transmitters

Send liquid-level data to logging and monitoring equipment

28 products

RTD Transmitters

Send temperature readings from RTD probes in containers, tanks, and pipes to switches and PLCs

10 products

Thermocouples

Measure and transmit liquid, gas, and surface temperature

719 products

Thermocouple Transmitters

Check system temperatures from your smartphone or tablet

9 products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

2 products

Noncontact Temperature Sensors

Monitor the temperature of hazardous, sensitive, and hard-to-reach materials without touching them

22 products