Hollow Shaft Type Devices 28mm Size Encoder Type EC28A Series A low-profile unit with 4mm height with good operation feel. Typical Specifications Hollow Shaft Type Devices Items Specifications Rating 10mA 5V DC Without load 50,000cycles With load 50,000cycles Operating life Product Line Actuator length （mm） Detent torque （mN・m） Number of detent Number of pulse Operating direction Push-on switch Minimum order unit（pcs.） Product No. EC28A1520401 7±5 15 30 12±7 Vertical 15 400 Without EC28A1550401 EC28A1560401 20±10 Dimensions Unit:mm Encoder Type PC board mounting hole dimensions Style Potentiometer Type ¿18 15 1.5 4 120$ 28.9 2-ø1.5 holes 3-4 5 2. 41.6 5 3-R 10 A C B 10.75 12 .2 0$ 16 3-3.05 15 456 23 120$ ¿21.6 3-3 2.5 ¿17 7.5 3.5 2.6 ¿28 A C B 3-ø1 holes Hollow Shaft Type Devices List of Varieties Encoder Type Series Hollow Shaft Type Devices 21mm size 28mm size EC21A EC28A 35mm size EC35AH EC35B ABC Incremental/ Self-returen switch Hollow shaft 40mm size 45mm size 60mm size EC40A EC45A EC60A Photo Output Incremental Shaft types Outline specifications Operating direction 9/18 15/30 6GABC／18 10GABC／30 15/30 31 Position 15/30 15／30 Without Push switch（Travel mm） Optional functions 12° Dimensions Soldering mm W ︵ 28 40.4 44.5 37 41.6 45 61.8 29 H 12° 35 35 21.6 D ︶ 21.35 15 4 Manual soldering 9 11.5 350℃ max. 3s max. Dip soldering 260℃ max. 5s max. 260±5℃, 5±1s Reflow soldering Operating temperature range –40℃ to ＋85℃ Electrical performance 2.5V max. 2.5V max. at 5V DC,0.5mA at 5V DC,1mA （resistive load）（resistive load） 2.5V max. at 5V DC,1mA （resistive load） Output voltage Potentiometer Type Absolute Incremental Vertical Number of pulse/ Number of detent Changeover angle Encoder Type Incremental 2.5V max.at 5V DC,0.5mA （resistive load） Insulation resistance 100MΩmin. 250V DC 10MΩ min. 50V DC 10MΩ min. 500V DC Voltage proof 300V AC for 1minute 50V AC for 1minute 500V AC for 1minute Rotational torque 12±7mN･m 16±7mN･m 20±10mN･m Mechanical performance Terminal strength Actuator strength 20±10mN･m 20±11mN･m 18±7mN･m 5N for 1minute 3N for 10s. Rotational direction 100N Push direction Vibration Shall be in accordance with individual 40±20mN･m specifications. 100N 50N 10 to 55 to 10Hz/min., the amplitude is 1.5mm for all the frequencies, in the 3 direction of X, Y and Z for 2 hours respectively Environmental performance Cold –40±2℃ for 240h –40±3℃ for 240h Dry heat 85±2℃ for 240h 85±3℃ for 240h Damp heat Page 40±2℃, 90 to 95％RH for 240h 60±2℃, 90 to 95%RH for 240h 455 456 457 458 459 460 462 Self-return Switch Specifications Items EC35B Circuit・number of contacts Single pole and double throw（Self-return） Travel （mm） 2.8±0.5 Push operating force （N） 3.8±1.5 Switch ON position 15±5° Ratational torgue 40±25mN・m Rating 10mA 5V DC Contact resistance 200mΩ max. Operating life 15,000cycles ● Hollow Shaft Type Device Cautions ……………………………………………………………………………465, 466, 467 Note F 448 The operating temperature range for automotive applications can be raised upon request. Please contact us for requirements of this kind.