DK-20型材料是以填充四氟改性的聚甲醛塑料为表面层三层复合自润滑材料,它是一种良性的边 界润滑材料,因此特别适用与高载低速下的旋转运动,摇摆运动以及经常在载荷下启闭而不易形 成流体动力润滑的轴承,止推垫片、滑块、球座等磨擦零件oDK-20能够充分地利用微量润滑脂,在 边界润滑润滑条件下可以长期的不用加油保养。在完全无油润滑条件下,DK-20磨擦性能及允许 PV值较低,因此通常在塑料表面轧出储油坑,装配时涂上锂基润滑油脂或硅脂等。 DK-20 type material is a three-layer composite self-lubricating material filled with tetrafluoromodified polyoxymethylene plastic as the surface layer. It is a benign boundary lubrication material, so it is especially suitable for high-load low-speed rotation and swing and bearings that are often opened and closed under load, which are not easy to form hydrodynamic lubrication, friction parts such as thrust washers, sliders, ball seats, etc. DK-20 can make full use of a small amount of grease, and can be maintained without refueling for a long time under boundary lubrication conditions. Under completely oil-free lubrication conditions, DK-20 has low friction performance and low PV value.Therefore, oil storage pits are usually rolled out on the plastic surface, and lithium-based grease or silicone grease is applied during assembly.
展品说明:最大承载 Maxdoad 静承载Static 250N/mm2 低速运转Very low speed 140N/mm2 旋转、摇摆运动Roatating oscillating 70N/mm2 最大PV值(干摩擦)Max. PV (dry running) 3N/mm2-m/s 使用温度Temp, limit -40°C~+110°C 摩擦系数 Friction coefficient 0.05-0.20H 最大线速度 脂润滑Grease Lubrication 2m/s Max. speed 持续给油Oil continued to >2m/s 导热系数Thermal conductivity 50W(m-k)_1 线胀系数Coefficient of thermal expansion IIXIO^K1 最初装配时必须在油穴中涂满润滑油脂 Initial pre-lubrication at assembly is strongly recommended