Hoyer Y2E2 - Permissible Bearing Loads

17
Motor
Manual
Frame size Grease (g) 2-pole (h) 4-pole (h) 6-pole (h) 8-pole (h)
160 20 4200 7000 8500 8500
180 20 4200 7000 8500 8500
200 25 3100 6500 8500 8500
225 25 3100 6500 8500 8500
250 35 2000 6000 7000 7000
380 35 2000 6000 7000 7000
315 50 1500 5500 6500 6500
355 60 1000 4000 5000 6000
400 80 800 3000 4000 6000
Table 6 Re-greasing interval and amount of grease
7.3 Permissible axial and radial bearing loads
This section provides information on radial and axial loads
for standard Hoyer IE3 motors. Values can vary. If specific
calculations are needed for other IE classes or environmen-
tal requirements, please contact Hoyer Motors. Specific per-
missible axial and radial loads on bearings can be provided
upon request by contacting Hoyer Motors.
The main conditions for axial and radial loads are listed be-
low. Permissible loads will vary under deviating conditions.
• 25°C ambient temperature (80°C bearing temperature)
• WT grease for closed bearings
• Pure axial or radial loads
• Normal bearing cleanliness (only for shielded bearing
calculations (see L10h and grease lifetime, especially
for vertical mounting))
• Vibration levels below limits stated in IEC 60034-14
• No or insignificant bearing current
• Wave spring forces are worst case (maximum possible
value)
Note the following:
Motors equipped with cylindrical roller bearings must only
be operated with a radial load on the motor shaft. Ensure
compliance with the minimum load and preload. Other
types of mounting may damage the bearings.
Motors equipped with angular contact bearings must only
be operated with a axial load on the motor shaft in the cor-
rect direction. The load must not change direction, as oth-
erwise the bearings may be damaged. Ensure compliance
with the minimum load and preload.
Permissible radial loads for deep groove ball bearings
X0
Permissible radial load at the start of the shaft extension
Xavg Permissible radial load at the middle of the shaft extension
Xmax
Permissible radial load at the end of the shaft extension
Table 7 Load definitions