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Japanese Seiko NSK air intake and air exhaust controls the motor to use the bearing introduction


28th January 2011 Bearing Technology 0 Comments

Japanese Seiko NSK air intake and air exhaust controls the motor to introduce with the bearing: Japanese Seiko faces throttle valve motor and EGR Exhaust Gas Re-circulation System which controls car air intake and air exhaust The motor, the grease which develops the low torsion torque seals the bearing.

Generally speaking, in order to reduce the torsion torque, rotate break-in when the motor is assembled, in order to reduce original resistance, degree of viscosity which reduces the oil composition of group of the grease. However, the question of this kind of method is: Not only break-in rotates and consumes time, but also after reducing the oil viscosity of group, the life-span will be shortened while using under the high temperature.

So, this company reduces grease resistance by adding the nanometer particle in grease. In this case, with comparing originally, not only could stabilize the torsion torque faster but also even relatively keep long life under the high temperature.

It was pottery particle that added in the grease, ” Therefore join the composition in group oil like link chain, thus make the characteristic of the grease stronger ” . Concrete material name and particle magnitude have not been announced. Because the grease in the past can enter the converyor side when shear force is weak, so there is more adhering to amount of grease on ball and orbital plane. And grease that develop newly while entering the converyor side must have stronger shear force, so the adhering to amount of grease on ball and orbital plane is just right.

In this way, can make the original torsion torque stabilize within short time, rotate break-in time ratio before is reduced by 70%. In addition, the invariable torsion torque is reduced by 30% while using at 100 ℃ compared with before . And realized more high sintering life-span the same as grease in the past.

Source: NSK.










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