Nozzle Position
Maximum efficiency is achieved for all oil lubrication systems
when the lubrication flow reaches the bearing contact areas
with minimum turbulence.
Nozzle positioning, as indicated in the table below, is therefore
strongly recommended.
“P” and
“S” values of nozzle position
Diameter
d |
SERIES |
SEA |
SEB
- VEB |
EX |
VEX |
E
200 |
P |
S |
P |
S |
P |
S |
P |
S |
P |
S |
| 6 |
|
|
|
|
10.10 |
0.90 |
10.10 |
0.90 |
|
|
| 7 |
|
|
|
|
11.30 |
1.00 |
11.30 |
1.00 |
13.10 |
1.00 |
| 8 |
|
|
12.10 |
0.85 |
13.30 |
1.20 |
13.30 |
1.20 |
13.80 |
0.70 |
| 9 |
|
|
|
|
14.80 |
1.20 |
14.80 |
1.20 |
16.10 |
1.30 |
| 10 |
13.40 |
0.30 |
14.80 |
0.75 |
16.40 |
1.00 |
16.40 |
1.00 |
17.90 |
1.55 |
| 12 |
15.40 |
0.30 |
16.80 |
0.75 |
18.20 |
1.20 |
18.20 |
1.20 |
19.60 |
1.60 |
| 15 |
18.40 |
0.30 |
19.80 |
1.15 |
21.90 |
1.20 |
21.90 |
1.20 |
22.30 |
1.45 |
| 17 |
20.40 |
0.30 |
22.00 |
0.90 |
24.10 |
1.35 |
24.10 |
1.35 |
25.70 |
1.55 |
| 20 |
24.50 |
0.35 |
26.70 |
1.05 |
28.70 |
1.50 |
28.70 |
1.50 |
30.80 |
1.75 |
| 25 |
29.50 |
0.35 |
31.80 |
1.05 |
33.50 |
1.75 |
33.80 |
1.65 |
35.50 |
1.65 |
| 30 |
34.50 |
0.35 |
36.80 |
1.00 |
39.70 |
1.90 |
40.30 |
1.65 |
42.40 |
2.05 |
| 35 |
39.50 |
0.35 |
43.00 |
1.25 |
45.70 |
1.90 |
46.10 |
1.90 |
49.90 |
2.05 |
| 40 |
44.50 |
0.35 |
48.70 |
1.45 |
51.10 |
1.90 |
51.60 |
1.85 |
55.80 |
2.50 |
| 45 |
50.00 |
0.35 |
54.20 |
1.45 |
56.60 |
2.30 |
57.60 |
1.85 |
60.90 |
2.10 |
| 50 |
55.60 |
0.45 |
58.40 |
1.65 |
61.60 |
2.30 |
62.30 |
2.10 |
65.20 |
2.75 |
| 55 |
61.30 |
0.55 |
64.60 |
1.85 |
68.10 |
2.30 |
69.60 |
1.90 |
72.20 |
3.15 |
| 60 |
66.40 |
0.65 |
69.60 |
1.85 |
73.10 |
2.30 |
74.60 |
1.85 |
80.20 |
2.80 |
| 65 |
72.40 |
0.65 |
74.50 |
1.75 |
78.10 |
2.30 |
79.30 |
2.05 |
86.00 |
3.00 |
| 70 |
77.40 |
0.65 |
81.50 |
2.20 |
85.20 |
2.80 |
56.50 |
2.15 |
91.00 |
3.00 |
| 75 |
82.40 |
0.65 |
86.50 |
2.15 |
90.20 |
2.80 |
91.50 |
2.25 |
95.80 |
2.75 |
| 80 |
87.40 |
0.65 |
91.50 |
2.15 |
97.00 |
3.00 |
98.50 |
2.70 |
102.70 |
3.30 |
| 85 |
94.10 |
0.90 |
98.60 |
2.55 |
102.00 |
3.00 |
103.50 |
2.70 |
110.00 |
4.00 |
| 90 |
99.10 |
0.90 |
103.50 |
2.50 |
109.50 |
3.10 |
111.00 |
2.65 |
116.00 |
2.05 |
| 95 |
104.10 |
0.90 |
108.50 |
2.50 |
113.60 |
3.10 |
115.40 |
3.05 |
123.80 |
3.70 |
| 100 |
109.10 |
0.90 |
115.40 |
3.00 |
118.80 |
3.25 |
120.40 |
3.05 |
130.30 |
3.75 |
| 105 |
114.60 |
1.40 |
|
|
126.00 |
4.00 |
|
|
137.20 |
4.85 |
| 110 |
120.90 |
1.10 |
125.40 |
2.95 |
132.80 |
4.25 |
135.40 |
3.05 |
144.40 |
4.65 |
| 120 |
130.90 |
2.20 |
137.40 |
3.40 |
142.80 |
4.25 |
144.90 |
3.50 |
157.20 |
4.85 |
| 130 |
144.00 |
1.85 |
149.80 |
3.40 |
157.10 |
5.40 |
|
|
168.60 |
5.70 |
| 140 |
153.20 |
2.20 |
159.80 |
3.35 |
167.10 |
5.40 |
|
|
182.50 |
5.50 |
| 150 |
165.60 |
|
173.30 |
4.65 |
178.90 |
5.65 |
|
|
|
|
| 160 |
|
|
183.30 |
4.65 |
190.80 |
5.75 |
|
|
|
|
| 170 |
|
|
193.30 |
4.65 |
204.50 |
5.50 |
|
|
|
|
| 180 |
|
|
207.40 |
5.65 |
219.50 |
6.55 |
|
|
|
|
| 190 |
|
|
217.30 |
5.60 |
229.00 |
6.05 |
|
|
|
|
| 200 |
|
|
231.10 |
6.30 |
240.30 |
6.20 |
|
|
|
|
| 220 |
|
|
251.10 |
6.30 |
264.10 |
6.90 |
|
|
|
|
| 240 |
|
|
271.00 |
6.20 |
283.60 |
6.40 |
|
|
|
|
| 260 |
|
|
298.90 |
7.95 |
|
|
|
|
|
|
| 280 |
|
|
318.30 |
7.30 |
|
|
|
|
|
|
Lubricant Contamination Effect on Bearing
Life and Behavior
Cleanliness affects bearing life and efficiency. It is necessary
to achieve an application where bearings operated in free
of external contamination.
It is important, therefore, to keep bearings clean during
greasing and to provide good sealing during operation.
Addition precautions must be taken for oil lubricated bearing
to monitor lubrication contamination levels. In the case of
oil re-circulation systems in particular, this depends on
the rate of contamination, the filtration standard and the
size of the filter.
Contamination by the ingress of coolants, cutting oils, etc.,
alter lubricant properties thereby effecting bearing life.
This should be eliminated at the design stage by providing
adequate sealing.
Contaminating particle classifications are available, which
specify limit sizes and amounts per unit volume of 100 cm3.
With reference to ISO standard 4406 (Figure 6) for high precision
applications as, for instance, high performance electrospindles,
contamination should be restricted to level 10/7, for new
spindles and to level 13/10, after long use. In any case,
the maximum particle size should not exceed 5 micrometers.
Figure 6 shows the area with acceptable pollution levels.
|
GRW
Product Desc.