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Selection of needle bearing oil

【Abstract】:The main shaft bearing lubricating oil using rolling bearings is generally considered based on the product of the inner diameter d of the bearing and the main shaft speed n, which includes the speed factor dn, the working temperature T of the bearing, and the load P borne by the bearing. The variety of lubricating oil can be selected from Japan Central Oil Chemical (COC) high-temperature resistant grease bearing oil, which can be determined based on product variety, operating conditions, and vis

The main shaft bearing lubricating oil using rolling bearings is generally considered based on the product of the inner diameter d of the bearing and the main shaft speed n, which includes the speed factor dn, the working temperature T of the bearing, and the load P borne by the bearing. The variety of lubricating oil can be selected from Japan Central Oil Chemical (COC) high-temperature resistant grease bearing oil, which can be determined based on product variety, operating conditions, and viscosity grade.

The working temperature of the bearing is -30-0 ℃, and the suitable oil viscosity for normal load (3MPa) is 18-32mm2/s (40 ℃), with viscosity grades of 22 and 32; Suitable for heavy load or impact load (3MPa-20MPa) with oil viscosity (40 ℃) of 18-50mm ²/s, viscosity grades of 32 and 46.

The working temperature of the bearing is 0-60 ℃, and the speed factor (dn value) is below 15000mm. r/min. For ordinary loads, the oil viscosity (40 ℃) is 32-70mm2/s, with viscosity grades of 32, 46, and 68. For heavy loads or impact loads (3MPa-20MPa), the oil viscosity (40 ℃) is 70-192mm2/s, with viscosity grades of 68, 100, and 150;

Speed factor (dn value) 15000-7500mmr/min, suitable for ordinary load oil viscosity (40 ℃) 32-50mm2/s, viscosity grade 32, 46, heavy load or impact load (3MPa-20MPa) oil viscosity (40 ℃) 42-90mm2/s, viscosity grade 46, 68, 100;

Speed factor (dn value) 75000-150000mmr/min, suitable for normal load oil viscosity (40 ℃) 15-32mm2/s, viscosity grade 15, 32, heavy load or impact load (3MPa-20MPa) oil viscosity (40 ℃) 32-42mm2/s, viscosity grade 32; The speed factor (dn value) is 150000-300000mm.r/min, suitable for ordinary load oil viscosity (40 ℃) 9-12mm2/s, viscosity grades 5, 7, and 10, heavy load or impact load (3MPa-20MPa) oil viscosity (40 ℃) 18-32mm2/s, viscosity grade 15.

The working temperature of the bearing is 60-100 ℃, and the speed factor (dn value) is below 15000mm. r/min. The oil viscosity is suitable for ordinary loads at 40 ℃ 110-192mm2/s (100 ℃ 9.3-12.5mm2/s), with a viscosity grade of 150. The oil viscosity is suitable for heavy loads or impact loads (3MPa-20MPa) at 40 ℃ 195-240mm2/s (100 ℃ 15-24mm2/s), with a viscosity grade of 150;

Speed factor (dn value) 15000-7500mmr/min, suitable for ordinary load oil viscosity 40 ℃ 70-120mm2/s (100 ℃ 5.6-9.3mm2/s), viscosity grade 68, 100, suitable for heavy load or impact load (3MPa-20MPa) oil viscosity (40 ℃) 110-192mm2/s, viscosity grade 150; Speed factor (dn value) 75000-150000mmr/min, suitable for normal load oil viscosity 40 ℃ 50-90mm2/s (100 ℃ 5.6-9.3mm2/s), viscosity grades 46, 68, 100, heavy load or impact load (3MPa-20MPa) oil viscosity (40 ℃) 70-120mm2/s, viscosity grade 100.


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