AXEON Marathon Motor - Manual (Page 11)

Nameplate Ambient Temperature above 65°C (150°F): Dow
Corning DC44 or equivalent, a special high temperature grease is
required. Note that Dow Corning DC44 grease does not mix with
other grease types.
4.2.2 BEARING OPERATING TEMPERATURE:
CAUTION: HOT SURFACE
The external surface temperature of the end shield (bracket) bearing
hub may reach 100° C (212° F) during normal operation. Touching
this surface may cause discomfort or injury. Surface temperatures
should only be measured with suitable instruments and not estimated
by hand touch.
For RTD settings see Table 3-7.
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4.2.3 LUBRICATION INTERVALS: (For motors with regreasing provisions)
Eq. 4.2 Lubrication Interval = [(Table 4-1) hrs] x [Interval Multiplier (Table 4-2)] x [Construction Multiplier (Table 4-3)]
Table 4-1 Lubrication Intervals (Hours) These values are based on average use.
Operating Speed – RPM (See Table 3.4 for Maximum Operating Speed)
NEMA / [IEC] Frame Size <7200 <5400 <4500 <3600 <1800 <1200
56-180 [80-110] 2500 Hrs. 4000 Hrs 5000 Hrs 6000 Hrs. 17000 Hrs. 20000 Hrs.
210-250 [130-160] 2500 Hrs 4000 Hrs 5000 Hrs. 12000 Hrs. 16000 Hrs.
280 [180] 2000 Hrs 3000 Hrs 4000 Hrs. 10000 Hrs. 14000 Hrs.
320 [200] 2000 Hrs 3000 Hrs. 9000 Hrs. 12000 Hrs.
360 [225] 1500 Hrs 2000 Hrs. 8000 Hrs. 10000 Hrs.
400-440 [250 – 280] 1500 Hrs. 4000 Hrs. 7000 Hrs.
>440 [>280] 1000 Hrs. 3000 Hrs. 5000 Hrs.
Seasonal Service: If motor remains idle for more than six months, Lubricate at the beginning of the season, then follow lubrication interval.
Do not exceed maximum safe operating speed Table 3-4 without manufacturer’s approval
Table 4-2 Service Conditions
Use highest level Multiplier : Maximum Ambient Temperature and Contamination are independent factors
Severity of
Service
Maximum Ambient
Temperature
Atmospheric Contamination Multiplier
Standard Less than 40° C (104° F) Clean, Slight Corrosion, indoors, less than 16 hrs per day
1.0
Severe
Above 40° C (104° F) to 50°
C
Moderate dirt or Corrosion or outdoors or more than 16 hrs
per day 0.5
Extreme
Greater than 50° C or
Class H Insulation
Severe dirt or Abrasive dust or Corrosion 0.2
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Table 4-3 Construction Multiplier
Construction Multiplier
Angular Contact or Roller Bearing 0.5
Vertical Motor 0.5
All others 1.0
Table 4-4 Relubrication Amounts
Frame Size Volume
NEMA IEC Cu. In. Fluid oz ml
48-56 80 0.25 0.14 4.0
143-145 90 0.25 0.14 4.0
182-184 110 0.50 0.28 8.0
213-215 130 0.75 0.42 12.5
254-256 160 1.00 0.55 16.0
284-286 180 1.50 0.83 25.0
324-326 200 2.00 1.11 33.0
364-365 225 3.00 1.66 50.0
404-405 250 3.80 2.11 62.0
444-449 280 4.10 2.27 67.0
>449 >280 4.50 2.50 74.0
For regreasing while operating multiply volume by 125%.
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