SAMICK THK LMFP40LUU Circular Pilot Flanged Linear Bushing T Wrench Set 157 g Specification values above 519 9628 157 g Specification values above are for model code CY1S20 500Z as published by SMC [Ue] rated operational voltage (AC 50 60 Hz) 690 V AC [Ue] rated operational voltage (DC) 500 V DC [Uimp] rated impulse withstand voltage 8 kV [Ui] rated insulation voltage 1000 V Mechanical durability 4000 cycles Electrical durability (AC) 1000 cycles Electrical durability (DC) Utilisation category Category A Suitability for isolation Yes Reference standard IEC 60947 2 [Icu] rated Ultimate short circuit breaking capacity 85 kA at 220 250 V AC 50 60 Hz Samick Pilot Flanged Type Linear Bushing When the load of moving body passed directly to the Linear Bushing the Pilot Flange can get more stable movement and being the most suitable for moment load