There are many reasons why electric cars have only one gear.
Electric motor gearbox oil.
Oil splash lubrication is often used for helical spur and bevel gearboxes this method is also referred to as an oil bath because it uses a reservoir is filled or partially filled with oil.
It s too thin for electric motors.
Bonfiglioli c helical geared motor.
Whenever you have to lubricate an electric pump bench grinder or other electric motor don t pull just any oil off the shelf.
Good electric motor grease.
Oil is literally splashed around inside the gearbox by the rotation of the gears providing lubrication.
Top torque density product variety extremely wide speed choice great compactness and price effectiveness make the c series the unparalleled line of helical gear motors and speed reducers.
The grease consistency preferred for electric motors is normally nlgi 2 or 3 with a base oil viscosity of 100 150 cst 40 c.
Electric motor lubrication schedule.
Cbs have available a range of electric motors from 0 37kw to 630kw in 2 4 6 8 pole motors.
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As the gears rotate they dip into this oil bath and splash the oil onto the other gears and bearings.
Why do electric cars have only one gear.
Electric motors require lubricants with specific characteristics.
This will help to insure maximum protection and component life.
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Don t use automotive motor oil.
Liquid bearings superior 100 synthetic oil for table fans ceiling fans box fans portable fans to keep indoor or outdoor fans operating smoothly and.
The typical mineral oil viscosity in an electric motor grease is in the range of 500 to 600 sus.
Plus it contains detergent.
The first is that electric motors rev to a significantly higher rate than internal combustion engines.
This article explains the typical lubrication requirement for for motors found on hvac equipment in buildings such as air conditioners furnace or air handler blower fans oil burner motors well pumps and condensate return pumps.
3 in one motor oil 3 oz.
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Viscosity oil viscosity should be appropriate for the load and speed of the application at operating tempera ture.
In an electric vehicle whilst a conventional gearbox with varying ratios is not used there is still a gearbox and typically a differential to connect the motor to the wheels.
Instead pick up electric motor oil like 3 in one electric motor oil about 3 at amazon.
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