CAL Optional Design
- 9-
replace the bearing together with shaft (2100) as shaft set (2101),
for easy replacement. Ball bearing type used is “Non-contact
double rubber seal type deep groove ball bearing (Clearance C3) as
shown in Table 3-2.
Table 3-2
Shaft size
Ball bearing (JIS B1521 Designation No.)
25-360
6305 UUC3
35-470
6307 UUC3
45-470
45-470A
6309 UUC3
55-530
6311 UUC3
65-530
6313 UUC3
(Note)
1. Sealing grease shall be heat resisting grease.
2. Do not use the JIS designation Nos. given in Table 3-2 for
arrangements.
3.4.2. In the case of oil lubricated bearings
Inspection and control of bearing temperature and lubricating oils
as well as timely ball bearings (3210) replacement are necessary.
The maximum permissible temperature of each bearing
is
75 degrees C max
on the bearing housing (3300)
surface or ambient temperature plus
40 degrees C max
.
Before starting the pump operation, be sure to check the lubricating
oil level with the oil gauge (6430). To use the constant level oiler
(6380), check if lubricating oil is filled in the constant level oiler up
to one third or higher level.
When resuming the operation of the pump that has been stopped
for an extended period of time, clean the bearings and the inside of
bearing housing with cleaning oil. At this time, cleaning while
turning shaft (2100) by hand will remove dirt well.
When a new bearing is used, replace all amount of lubricating oil
after operation for the initial 300 hours. After that, the replacement
interval should be 3,000 hours of operation. The type of oil and
quantity are shown in Table 3-3.
The bearing replacement intervals vary depending on operating
conditions. During continuous operation, the bearings must be
replaced at an interval of approx. 9000 hours, as standard. In the
case of short-time operation, it is recommended that the bearings
should be replaced every two years. The ball bearing type used is
“Open type deep groove ball bearing (Clearance C3)”. The bearing
type codes in use are listed in Table 3-3.
Table 3-3 Oil lubricated bearings, and lubricating oil
Shaft
size
Bearing
JIS B1521
Lub. Oil
quantity
(liter)
Lub. Oil name
Below
1800min
-1
1800min
-1
or more
25-360
6305C3
0.25
VG46
Turbine
oil
VG32
Turbine
oil
35-470
6307C3
0.56
45-470
45-470A
6309C3
0.65
55-530
6311C3
1.08
65-530
6313C3
1.30
[In the case a round oil gauge is provided]
Check if the oil level is within the circle marked on the glass
surface of the round oil level gauge.
[In the case a constant level oiler is provided]
To replenish lubricating oil, remove the oiler cover (6386) together
with the Replenish (6382), and fill lubricating oil into the bearing
housing (3300) until it reaches the mounting (6383). Then, fill the
oiler with lubricating oil, and fit the oiler in mounting. Keep the oil
level in the constant level oiler at one third or higher level.
Fig 3.4-1
