Mechanical rotary encoders, also called shaft encoders, are electro-mechanical devices that convert the angular motions (movement around fixed points) of rotary shafts into either analogue or digital signals.
What are mechanical rotary encoders used for?
Applications that require precision shaft rotation (movement around a specific point) make use of mechanical rotary encoders.
These include industrial control machinery in factories, rotating radar platforms in satellite structures or computer input devices like trackballs and mice.
Types of mechanical rotary encoders
Absolute encoders:
have tracking functions to determine specific shaft positioning points in industrial equipment like CNC machines, lathes and bore machines.
maintain positioning data even when power is cut from the system. When the system is switched on again it begins operating from the point where it stopped previously.
Incremental (relative) encoders:
record deviations in shaft position points over certain time frames. With each new time frame after power is cut and switched on again the encoder starts recording from a predetermined reference and measures the distance between the previous point and the current point.
Description:
Surface mount ring encoder with 1.55mm height V9.23mm
contribute in space savingTypical rating 1mA@5Vdc max., 50μA@3Vdc min.Output Voltage 1V max. @ 1mA 5Vdc (Resistive load)Operating life 100,000 cyclesOperating Temperature ｰ10 to +60℃.
Description:
2-bit gray code, channel A leads channel B
by 90° with clockwise rotationPlastic bushing and end slotted shaftLong life, 200000 revolutionsContinuous mechanical rotationSeparate horizontal mounting bracket.
Description:
Output signal, channel A leads channel B by
60° ±30° with clockwise rotation15 pulse - 30 detentSnap-in PCB and panel mountableHorizontal and vertical mount optionsLong life, high reliabilityEnd slotted metal shaft and Flatted shaft typesRotational life 15000 cyclesRated at 10mA ...
Description:
Low profile with high reliability 11mm encoders, suitable
for automotive applications, image and sound devices. Incremental type 15000 operating cyclesPush switch variant (stock No.623-4293)15 pulse 30 detentsRated at max. 10mA 5Vdc min. 1mA 5VdcDetent Torque 6 +/- 4 mNm.
