Product category
Speed Switches & Encoders4B Rotech heavy-duty rotary shaft encoders are mainly used to protect equipment and personnel against dangerous under-speed and belt-slip conditions in harsh environments.
Speed Switches AccessoriesThe Speed Relay is a microprocessor controlled digital speed monitor for use with 2, 3, 4 wire NPN/PNP sensors, 4B’s WDA range of sensors or Contact sensor inputs, with a user programmable…
Speed Switches AccessoriesThe 4B Sensor Mounting Kit is able to securely mount barrel sensors in position, including 4B’s range of 18 & 30mm wide inductive sensors.Made of Stainless Steel and Nylon 66, giving corrosion…
Speed Switches & EncodersThe Encoder-Flex 1024 is a rotary shaft encoder that monitors slide gate position, shaft position, or shaft speed. Examples include position of rack and pinion gates, valves, distributors, and shaft speed on…
Speed Switches & EncodersThe Heavy Duty (HD) Whirligig is a fully guarded target for easy mounting of motion sensors. It is suitable for use with 4B's range of inductive proximity sensors including the M100 Stopswitch,…
Speed Switches & EncodersThe Milli-Speed Sensor has a 4-20 mA output proportional to calibrated speed, it is designed to allow detection of belt slip & underspeed, stop motion, low speed or zero speed on bucket…
Speed Switches & EncodersThe M1003 Stopswitch is a simple inductive shaft speed monitoring device. The self-contained unit, which signals when the shaft has stopped rotating. It can be used for process control, motion detection and…
Speed Switches & EncodersThe M300 Slipswitch is an easy-to-use inductive proximity shaft speed monitoring device with an adjustable 0 - 30 second start-up delay, all housed in a 30 mm diameter moulded body. The self-contained…
Speed Switches & EncodersThe M800 Elite Speed Switch is designed to detect belt slip, belt underspeed, stop motion, low speed or zero speed on bucket elevators, conveyors, airlocks, mixers, fans, grinders and many other rotating…
Speed Switches & EncodersThe M100 Stopswitch is a simple inductive shaft speed monitoring device. The self-contained unit has a single set point, which signals when the shaft has stopped rotating. It can be used for…
Send us the specification — we source beyond the catalogue.
Send Your RequirementShare your specifications and quantities. Our team will review your request and come back with sourcing options and a quotation.