DU BUSHING WZB-1T CSB-50 HAVE OIL HOLE WZB - 1 high-performance oilless bearing, environmental protection is based on steel substrate, the middle bronze powder, sintered spherical surface rolling four ethylene (PTFE) and a mixture of green polymer material, rolling and sliding bearing. Product is lead-free environmental protection, wear-resisting performance is excellent, plastic layer and copper layer with high strength, fatigue resistance, impact resistant performance is good wait for an advantage. Load capacity 140N/mm² Friction Coef 0.03~0.18 Temperature -195℃~280℃ PV limit(dry) 4.3N/mm²·m/s Speed limit 10m/s PV limit(oil) 60N/mm²·m/s