... Long-term free maintenance Excellent high-speed THK linear guide ,Japan linear guide, THK, HRWCA/CAM due to effective ball quantity, ... HRW35CRMTHK, HRW17CR HRW21CR HRW27CR HRW35CR THK, RSR type in cross roller guide and linear rolling unit limited stroke type, cage most prone ... rigidity. Therefore, and parallel use a pair of straight line roller liner, compared to achieve a more compact knot made., ...