Instructions

Maintenance and servicing
27
Interval
Action
Monthly
Check screw connections and retighten if necessary.
Check ball or roller bearings and relubricate if necessary, see
section "lubrication".
Damaged bearings or bearings whose service life has been
reached, must be replaced immediately.
Check cable supply line.
Every 6 month
Check proper condition of connecting cables and plugs.
Every 2 years
Replace O-rings and plastic seals .
At least every 4
years
Check proper condition of electrical systems and stationary elec-
trical equipment.
Other maintenance and repair work are to be carried out exclusively by
Netter Vibration.
NEA/NEG up to the housing size 130 have ball bearings. These are lubri-
cated for their service life (permanent lubrication).
NEA/NEG from the housing size 130 up have roller bearings. These are
lubricated with the grease of the type KLUEBER Staburags NBU 8 EP. At
speeds up to 3000 rpm the bearings are lubricated for a period of at least
5000 operating hours. After this time the grease of the bearings has to be
replaced completely.
The lubrication intervals must be considerably shortened under more diffi-
cult operating conditions.
The housing sizes can be found in the brochure of the NEA/NEG.
Type of lubrication of the bearings and bearing life of the NEA:
Type
NEA
Lubrication
Bearing
life [h]
50 Hz
Bearing
life [h]
60 Hz
504
PL*
> 100,000
> 100,000
5020
PL*
92,118
22,745
5050
PL*
8,087
2,236
5060
PL*
> 100,000
5,044
50120
PL*
18,075
18,075
50200
PL*
3,363
2,572
50300
PL*
4,003
3,588
50550
PL*
4,148
4,219
Type NEA
Lubrication
Bearing
life [h]
50 Hz
Bearing
life [h]
60 Hz
50770
PL*
7,509
6,257
2530
PL*
> 100,000
> 100,000
2570
PL*
> 100,000
> 100,000
25210
PL*
23,406
19,200
25420
PL*
15,135
12,635
25540
PL*
6,266
4,224
25700
PL*
19,477
16,231
*PL = permanent lubrication
Notes on
lubrication
Lubrication /
bearing life
NEA