TC570 3BSE001458R1  ABB  Operator unit

Horizontal motors in frame sizes 315 to 500 have deep groove ball bearings at both ends. The HXR 560, AMI 560 to 630 and NMK 560 to 710 frame sizes have a double bearing arrangement (a deep groove ball bearing and cylindrical roller bearing) at the D-end and a cylindrical roller bearing at the N-end (only horizontal motor available).

The bearing at the D-end is axially locked in horizontal motors. Standard bearings for horizontal motors are listed in the table below and the bearing construction is shown in the figures on page 13.

The standard bearing solution is designed to carry the weight of a typical coupling half and the motor’s rotor only. Any additional radial or axial force caused by the driven equipment may require specially constructed bearings.

Most standard bearings have a rated lifetime L10h in excess of 100,000 h. The rated lifetime for frame size 500, 2-pole, may be less than 100,000 h. The lifetimes are calculated in accordance with ISO R 281-1.

The basic rated lifetime L10h is the number of hours at rated bearing load and speed that 90% of a group of identical bearings will complete or exceed before the first evidence of failure.

The motors are fitted with grease nipple(s) at both ends for lubricating the bearings. The grease nipples are located on the top of the motor. The amount of grease and the greasing interval are stamped on the relubrication plate, and the same information is shown in the table below.

The structure and details of the product：

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