Traction motor bearings and traction motor armature bearings

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Traction motor speed rail locomotive drive system in the main equipment, dedicated traction motor bearing is one of the main components for railway locomotive traction motor is the leading domestic and accuracy class P6, P5, P0. NUP417Q1/C9S0 (92417 QTU)

NU426Q1/P69S0 (E32426QTU) NJ328Q1/C4SO (4G42328QT), NU330Q1/P69SO (E32330QTU)

The traction motor armature bearings must have the smallest possible size and higher limits of speed.double bearing
A bilateral transmission of bearing when the motor power, such as still using the unilateral transmission gear side bearing load is too large, difficult to select the rated dynamic load and limit speed can meet the requirements of the bearing, so the motor design allows the conditions could be replaced by bilateral transmission mode.

Bilateral transmission advantage of a cylindrical helical gear, spiral angle of the two gears are equal spin in the opposite, in order to obtain a more stable transmission quality, and without axial load. Bearings suitable for this purpose as the inner wall of the cylindrical roller bearing NU type, if the bilateral transfer

Action is still the spur gear, you should choose can withstand a certain bearing axial force, and generally use the inner ring NJ - type of single-wall cylindrical roller bearings.china ball bearing


2 sided drive bearing armature usually double-pivot bearing, install the gear output support for swimming, the commutator end of the positioning support. Output bearings located close to the gear, the maximum force, the key bearing armature bearing. In order to reduce its load, and the general mining

Inner wall of the cylindrical roller bearing NU type. Commutator end of the general use of the inner single-wall and with the level of the retaining ring cylindrical roller bearing NUP type and abroad using the inner single-wall and with the thrust collar of cylindrical roller bearings.roller ball bearings

Thin dense chromium coatings (TDC) to provide effective anti-wear protection in mixed friction conditions of ball and roller bearings, suitable for rolling high-precision bearings and spindle bearings. The copper coating can also be used for emergency lubricant on bearing cages, and the silver coating for the same purpose aviation

Aerospace bearings and titanium nitride to provide users with a jet engine bearing wear protection.

4 to prevent the passage of rolling bearings are electrically isolated to prevent the current CD system and facing the hole and face, and then coated with alumina. SKF offers two different coating thickness thick insulation layer with high resistance to prevent the current channel, even in wet conditions

Environment; or a thin insulating layer of low resistance passage.

The drive system of electric transmission diesel locomotives in the main equipment. Armature bearing loads, and the size of the traction motor by the wheel diameter, distance o f the inside of the two wheels and motorcycle clearance for restrictions, so you must strike the right balance.