ELTRA EL721A500Z5L10X Blind hollow shaft Incremental encoder with fixing holes (diam. 63,5 mm). Encoder diameter: 72 mm. With zero pulse. 500 ppr resolution. 5 V DC Power Supply. Electronic interface: line driver. Shaft size: 10mm. Enclosure class: IP 54 Series is recommended for industrial application with high mechanical resistance requiements. Specially designed for direct mounting on tachometric dynamos or motors.