TWD32 NB 2" Ball Bushing Adjustable Block Linear MotionTWD32 NB Linear Slide Unit Pillow Block 2" Shaft Diameter Made in Japan High Accuracy NB Linear Bushing This TWD32 linear slide unit from Nippon Bearing (NB) is a precision pillow block unit designed for 2" shafts. Made in Japan, it features a high accuracy steel retainer and is part of the inch series line commonly used in the USA. Engineered for smooth linear motion, its ideal for machinery, automation systems, and heavy duty slide applications.