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GEH-5304A
11
Mounting may be either horizontal or vertical for these bearing life determinations, as long as no axial
load (i.e., suspended load) other than the weight of the armature is present if vertical.
5. Special Load Considerations
Where the load is overhung beyond the motor shaft extension or greater bearing life is desired, the
application should be referred to GE Industrial Systems.
6. Pinion Drives
While Kinamatic motors are not designed for overhung pinion drives, they may be successfully ap-
plied under suitable conditions. In addition to a radial load, some gears produce thrust load on the
bearing. Complete details of the proposed gearing should be referred to GE Industrial Systems in all
cases.
7. Thrust Loads
Due to the mounting position or type of drive arrangement, a thrust load may be applied to the motor
shaft. The Kinamatic motor is designed to permit a limited amount of thrust load. This permissible
load will vary by mounting position and direction of the load due to the weight of the armature. The
permissible load in Table 2 is tabulated by frame diameter and mounting position. These apply to
ball bearings only.
For applications combining thrust and radial loads or where thrust loads exceed the values shown in
Table 2, refer all details to GE Industrial Systems.
Table 2
Maximum Continuous Thrust Capacity, Lbs.*
Vertical Mounting
Bearing Horizontal Thrust Load Thrust Load
Frame Size Mounting Up Down
2512 Std-309 350 465 235
2512 O/S-310 400 515 285
2513 Std-309 350 485 215
2513 O/S-310 400 585 265
2812 Std-310 400 550 250
2812 O/S-311 500 650 350
2813 Std-310 400 585 215
2813 O/S-311 500 685 315
*Based on L10 life of 20,000 hours and an average speed not exceeding 2500 RPM.
IV. OPERATION
Disconnect power before touching any internal part. High voltage may be pres-
ent even when the machine is not rotating. If used with a rectified power sup-
ply, disconnect all AC line connections to power supply. With other power
supplies, disconnect all DC line and field connections. Also disconnect power
from auxiliary devices.
Ground the machine properly to avoid serious injury to personnel. Grounding
must be in accordance with the National Electrical Code and consistent with
sound local practices. One of the bolts holding the conduit box to the unit, ac-
cessible from inside the conduit box, is identified and may be used for attach-
ing a grounding cable.