The recommended oil viscosity based on dn value/temperature is as follows:
DN value<10000mm.r/min, suitable oil viscosity 60mm2/s at bearing operating temperature 0-30 ℃, suitable oil viscosity at 30-60 ℃ 37.8 ℃ 115mm2/s, suitable oil viscosity at 60-90 ℃ 37.8 ℃ 360mm2/s, suitable oil viscosity at 90-120 ℃ 37.8 ℃ 750mm2/s;
The DN value is 10000-25000mm.r/min. When the bearing operates at a temperature of 0-30 ℃, the applicable oil viscosity is 35mm2/s, 37.8 ℃ at 30-60 ℃, 95mm2/s, 37.8 ℃ at 60-90 ℃, 270mm2/s, and 550mm2/s, respectively;
The DN value is 25000-60000 mm.r/min. When the bearing operates at a temperature of 0-30 ℃, the suitable oil viscosity is 35 mm2/s, the suitable oil viscosity is 37.8 ℃ at 30-60 ℃, 70 mm2/s, the suitable oil viscosity is 37.8 ℃ at 60-90 ℃, 270 mm2/s, and the suitable oil viscosity is 37.8 ℃ and 550 mm2/s, respectively;
The DN value is 60000-75000mm. r/min, and the suitable oil viscosity is 20mm2/s when the bearing operates at 0-30 ℃. The suitable oil viscosity is 37.8 ℃ and 60mm2/s when the bearing operates at 30-60 ℃, 220mm2/s when the bearing operates at 60-90 ℃, and 360mm2/s when the bearing operates at 90-120 ℃;
The DN value is 75000-100000 mm.r/min. When the bearing operates at a temperature of 0-30 ℃, the suitable oil viscosity is 20mm2/s, the suitable oil viscosity is 37.8 ℃ at 30-60 ℃, 60mm2/s, the suitable oil viscosity is 37.8 ℃ at 60-90 ℃, and the suitable oil viscosity is 3600mm2/s at 90-120 ℃;
The DN value is 100000-250000 mm.r/min. When the bearing operates at a temperature of 0-30 ℃, the suitable oil viscosity is 9mm2/s, the suitable oil viscosity is 37.8 ℃ at 30-60 ℃, 35mm2/s, the suitable oil viscosity is 37.8 ℃ at 60-90 ℃, 115mm2/s, and the suitable oil viscosity is 37.8 ℃ at 90-120 ℃, 270mm2/s;
The DN value is above 250000 mm.r/min, and the suitable oil viscosity is 9mm2/s when the bearing operates at 0-30 ℃. The suitable oil viscosity is 37.8 ℃ and 35mm2/s at 30-60 ℃, and the suitable oil viscosity is 95mm2/s at 60-90 ℃. The suitable oil viscosity is 270mm2/s at 90-120 ℃.