6 Technical data
It is important to observe the technical data during installation, operation and maintenance.
Inform personnel about the technical data.
Table 1. Sterling NEMA motors
Motor RPM
Frame
Type of service
VS. HP
Standard
Heavy duty
8 hrs/day
24 hrs/day
143T - 286TS
1.5 - 30
*
*
3600
324TS - 455TS
40 - 150
6 Months
2 Months
143T - 256T
1 - 20
*
*
284T - 326T
25 - 50
4 Years
18 Months
1800
364T - 445T
60 - 150
9 Months
3 Months
143T - 256T
0.75 - 10
*
*
284T - 326T
15 - 30
4 Years
18 Years
1200
364T - 445T
40 - 125
1 Year
4 Months
* Motors of this size do not usually have bearings that can be re-lubricated.
These bearings should be replaced at least every 5 years for 8 hr/day service, or every 2 years for 24 hr/day service.
Warning: The bearing grease used must be Klüber NBU-15 - DO NOT SUBSTITUTE!
Table 2. Baldor NEMA motors
Motor RPM
Frame
Type of service
Standard
Severe
8 hrs/day
>16 hrs/day
- 210
5500 hrs
2750 hrs
> 210 - 280
3600 hrs
1800 hrs
> 280 - 360
2200 hrs
1100 hrs
3600
> 360 - 449
2200 hrs
1100 hrs
- 210
12000 hrs
6000 hrs
> 210 - 280
9500 hrs
4750 hrs
> 280 - 360
7400 hrs
3700 hrs
1800
> 360 - 449
3500 hrs
1750 hrs
- 210
18000 hrs
9000 hrs
> 210 - 280
15000 hrs
7500 hrs
> 280 - 360
12000 hrs
6000 hrs
1200
> 360 - 449
7400 hrs
3700 hrs
Recommended grease forgeneral applications: Polyrex EM (Exxon Mobil)
For other grease types, grease amounts and/or duty conditions please refer to the Baldor Instruction manual.
37