HGR 45-4000 WERBWERB HGR 45 4000 Linear Guide Rail, 45 mm Width, Full 4000 mm Length The WERB HGR 45 4000 linear guide rail is a 45 mm wide rail supplied as a single, full length 4000 mm piece for long travel CNC and automation axes. It is designed to run with WERB HGR 45 series guide blocks, providing smooth, accurate motion over a continuous 4 meter stroke. As the authorised WERB linear motion supplier in Pakistan, Abdul Traders keeps HGR 45 4000 rails ready for