GE GEH-5304A User Manual
Page 11
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.