ABB DODGE USN 500 Series, Manual, Page: 6 / 16

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Table 7 - Viscosity of Oil in the Grease
DN
Viscosity for Loads Up
To 18% of Dyn. Cap*
(Cst @ Oper. Temp.)
DN
Viscosity for Loads Up
To 18% of Dyn. Cap*
(Cst @ Oper. Temp.)
2500 700 35000 125
5000 650 40000 100
7500 580 45000 85
10000 500 50000 75
12500 425 75000 62
15000 390 100000 42
17500 325 125000 30
20000 280 150000 27
22500 235 175000 22
25000 200 200000 20
DN = Bore Diameter (mm) x RPM
* = For loads above 18% of dynamic capacity an EP grease with the
above viscosity oil is recommended.
Table 8 - Regreasing Intervals (Months) *
(Based on 12 Hours Per Day - 66
° Max.)
Size,
mm
RPM*
250 500 750 1000 1250 1500 2000 2500 3000 3500
35-60 8 6 4 3 2 1 .5 .5 .25 .25
65 7 5 3 2 1 1 .5 .25 .25
70-85 6 4 3 2 1 .5 .25 .25
90-100 5 3 2 1 .5 .5 .25
110-130 4 3 2 1 .5 .25
140-160 3 2 1 .5 .25
Table 9 - Maximum RPM (Adapter Mount)
Shaft Size,
mm
Basic Bearing
Description
Maximum RPM
Grease Oil
35 22308K C3 4300 5300
40 22209K C3 5600 7000
45 22210K C3 5300 6700
50 22211K C3 4500 5600
55 22212K C3 4000 5000
60 22213K C3 3600 4500
65 22215K C3 3400 4300
70 22216K C3 3200 4000
75 22217K C3 3000 3800
80 22218K C3 2600 3400
85 22219K C3 2400 3200
90 22220K C3 2200 3000
100 22222K C3 2000 2800
110 22224K C3 1800 2400
115 22226K C3 1700 2200
125 22228K C3 1600 2000
135 22230K C3 1500 1900
140 22232K C3 1400 1800
If the RPM of the application falls between 20% and 80% of
maxiumum RPM (Table 9 for adapter mount, Table 10 for direct
mount), pack the lower half of the housing one-third to one-half
full. If the RPM of the application is less than 20% of maximum
RPM, pack bearing housing cavity 100% full. If the RPM
exceeds 80% of maximum RPM, do not add grease in the lower
half of the housing nor in the cap.
At each regreasing cycle, for applications up to 80% of
maximum RPM, slowly add grease until fresh grease is
seen purging at the seals. Regreasing should be done while
running. Remote re-greasing lines should be added to avoid
endangering personnel.
If the RPM is greater than 80% of maximum RPM, add 4
strokes of a handgun at each regreasing cycle for bores up
to 50 mm. For bores greater than 50 mm up to 130 mm add 8
strokes of handgun at each regreasing cycle. For bores greater
than 130 mm add 16 strokes of a handgun at each regreasing
cycle. For units running above 80% of maximum RPM, running
temperature should be monitored. If a drastic change in running
temperature is noted, it is recommended to remove the used
grease completely and recharge with fresh grease per the
above instructions.
Select a grease with a viscosity at operating temperature
which will provide full film lubrication (See Table 7). Use a
30°C-55°C increase in bearing temperature above ambient,
depending on RPM and load. Use Table 8 as a general guide for
regreasing the bearings. A small amount of grease at frequent
intervals in preferable to a large amount of grease at infrequent
intervals. For special applications involving high speeds or high
temperatures consult your local ABB Motors and Mechanical
representative for MPT products.
Applications such as conveyor pulleys and fans are shipped
to a job site with bearings already mounted to the shafts.
Since these units may be stored for long periods of time in
unprotected areas subject to rain, dust, etc., bearings should be
packed 100% full and so tagged at bearing assembly to prevent
contamination or corrosion of the bearings.