Transmission | McMaster-Carr

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37,651 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

Gear Box Mounts

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

6 products

Drive Sprockets

Mount directly onto a shaft to transmit rotary motion and torque

3,671 products

Pulley and Sprocket Bushings

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

721 products

Roller Chain and Links

Mate with sprockets to transmit power between rotating shafts

574 products

V-Belt Drive Pulleys

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

583 products

Inverted-Tooth Chain

Smoothly transmit power between rotating shafts with minimal vibration and noise

12 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

Timing Belt Drive Pulleys

Pair with a timing belt to keep your drive system in sync

909 products

Timing Belt Idler Pulleys

Add to your timing belt setup to minimize vibration and keep belts from wearing out

25 products

V-Belt Idler Pulleys

Spin freely on built-in bearings to reduce wear and vibration on V-belts

14 products

Round Belt Idler Pulleys

Spin freely on built-in bearings to reduce wear and vibration on round belts

21 products

Timing Belt Pulley Stock

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

17 products

Flat Belt Idler Pulleys

Spin freely on built-in bearings to reduce wear and vibration on flat belts

31 products

Idler Sprockets

Press against your chain to take up slack and reduce wear and vibration

85 products

Round Belt Drive Pulleys

Mount directly onto a shaft and pair with round belts to transmit rotary motion and torque

15 products

Flat Belt Drive Pulleys

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

25 products

Spur Gears and Racks

The simplest type of gear for transferring motion, with straight, parallel teeth

727 products

Worm Gears

Reduce speed while transferring motion at a right angle in only one direction

96 products

Miter Gears

Connect shafts at a right angle without changing speed or torque

74 products

Bevel Gears

Reduce speed while transmitting motion at a right angle

24 products

Helical Gears and Racks

Curved teeth stay in contact longer to transmit heavier loads at higher speeds than spur gears

32 products

Ratchet Gears and Pawls

Transmit motion in one direction and stop it in the other

39 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

Hydraulic Motors

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

6 products

Stepper Motors

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

197 products

Air-Powered Gearmotors

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

16 products

Servomotors

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

96 products

Air-Powered Motors

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

23 products

Motor Mounts

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

34 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

Flexible Shafts

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

41 products

Machinable Shaft Ends

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

56 products

Shaft Adapters

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

54 products

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion

1,780 products

Linear Shafts

Pair with linear bearings to reduce friction in manual and automated systems

1,318 products

Idler Shafts

Support idler sprockets and pulleys in tensioning applications

28 products

Mounted Bearings

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

1,170 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

2,162 products

Roller Bearings

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

439 products

Pivot Bearings

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

20 products

Flanged Sleeve Bearings

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

2,012 products

Thrust Bearings

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

1,170 products

Sleeve Bearings

With no moving parts, the plainest type of bearing

3,405 products

Electric Actuators

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

103 products

Hydraulic Actuators

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

16 products

Precision Lead Screws and Nuts

Pair with a motor for accurate starts and stops in automated motion and positioning applications

962 products

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

18 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

Shaft Collars

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

2,802 products

Lead Screws and Nuts

Move components in a straight line in clamping and heavy duty lifting and lowering applications

838 products

Ball Screw/Splines and Bearings

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

3 products

Positioning Slides

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

50 products

Sleeve Splines and Bearings

Transmit rotary power or move loads along the length of splines

9 products

Roller Screws and Nuts

Create more points of contact to handle much higher loads than ball screws and nuts of the same size

8 products

End Supports for Ball Screws and Precision Lead Screws

Brace and secure the ends of ball screws and precision lead screws

16 products

Ball Screws and Nuts

Provide smooth travel where high speeds, accurate positioning, and repeatable movement are required

200 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

Lubricating

Oil Additives

Enhance the performance of oil and extend its life

7 products

Electrical

Electrical Cords

Connect equipment and devices to a power supply

2,360 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

Security Cable

Connect low-current security and intercom systems

53 products

Control Cable

Send signals to control machinery and automated systems

40 products

Fiber-Optic Cable

Transmit signals between data centers and workstations in fiber-optic networks

12 products

CAN-Bus Cable

Connect devices in CAN-Bus communication networks

6 products

Fieldbus Cable

Connect devices in Fieldbus communication networks

1 product

DeviceNet Cable

Connect devices in DeviceNet communication networks

4 products

Modbus Cable

Connect devices in Modbus communication networks

2 products

Coaxial Cable

Transmit audio, data, and video signals

8 products

Ethernet Cable

Send data between computers, printers, servers, and switches

20 products

Profinet Cable

Connect devices in Profinet communication networks

2 products

Telephone Cable

Connect telephones and telephone blocks to a wall jack

6 products

Profibus Cable

Connect devices in Profibus communication networks

3 products

Electrical Cord Reels

Neatly store electrical cords for easy access

104 products

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

106 products

Electrical Receptacles

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

16 products

Wire Splices, Connectors, and Taps

Join wire and protect the connection

16 products

Development Board Cords

Connect your development board to components such as sensors and actuators

7 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

108 products

Electrical Connector Caps

Protect data connectors when not in use

6 products

Development Board Sensor Modules

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

17 products

PLCs

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

9 products

PLC Input and Output Modules

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

10 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

IO Link Connectors

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

28 products

Linear Motion Position-Measuring Transmitters

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

8 products

Light Curtains

Immediately cut power to machinery when anything blocks the light beam

11 products

Ethernet Switches

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

68 products

Magnetic Switches

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

1 product

IO Link Programmers

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

1 product

Motor Speed Controls

Manage the speed of AC and DC motors

37 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

26 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

3 products

Switch Mounts

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

2 products

Sensor Switch Transmitters

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

16 products

Grounding Rings

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

22 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

60 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

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

Light Meters

Measure light quality and intensity

9 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

23 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

SPC Wireless Transmitters

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

8 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

Mechanical Control Cables

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

97 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

371 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

Material Handling

Pulleys

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

345 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

Lighting

Light Switch Sensors

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

21 products

LED Drivers

Send electricity to LED lights and protect them from voltage and current fluctuations

2 products