certific at e - NOC international
certific at e - NOC international
certific at e - NOC international
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130 KRW<br />
Lubric<strong>at</strong>ion<br />
Consider the following main lubricant characteristics when selecting greases:<br />
• type of thickener<br />
• basic oil<br />
• oper<strong>at</strong>ing temper<strong>at</strong>ures<br />
• drip point<br />
• he<strong>at</strong> resistance<br />
• compression resistance<br />
Lubric<strong>at</strong>ion intervals depend on bearing type, bearing size, and oper<strong>at</strong>ing speed.<br />
Lubric<strong>at</strong>ing the bearing area<br />
The anti-corrosion oil in the roller bearing serves only as an aid during assembly.<br />
Do not <strong>at</strong>tempt to do test runs without sufficient lubricant.<br />
The oper<strong>at</strong>ing conditions are produced to a gre<strong>at</strong> extent by the lubric<strong>at</strong>ing technique and the lubricant manufacturer’s<br />
instructions must be followed.<br />
To determine the amount of initial lubric<strong>at</strong>ion, you may use the Initial Lubricant Amount table, so far as no inform<strong>at</strong>ion<br />
is given for special assembly instructions<br />
It is extremely important th<strong>at</strong> the hub cavities of the roller bearing are always filled with grease, while in contrast the<br />
filling quantity in the housing where the roller bearing is to be installed depends on the r<strong>at</strong>io of the highest oper<strong>at</strong>ing<br />
rev speed n Grease . The minimum rev speeds for each roller bearing are contained in the KRW delivery programme.<br />
For the initial lubric<strong>at</strong>ion, the fill level in the roller bearing must only reach up to lowest rolling element. Higher fill<br />
levels would lead to increased he<strong>at</strong>ing of the roller bearing and to foaming and therefore to prem<strong>at</strong>ure oxid<strong>at</strong>ion<br />
of the lubricant.<br />
Lubricant amount <strong>at</strong> initial greasing<br />
Speed r<strong>at</strong>io n max / max 0,8 nG Fill level of the housing cavity<br />
< 0,2 full<br />
Grease quantity/bearing with first filling<br />
Bearing series Curve<br />
Deep groove ball bearings<br />
618<br />
160<br />
60<br />
62<br />
63<br />
64<br />
Angular contact ball bearings<br />
70<br />
72B<br />
73B<br />
0,2 ... 0,8 a third of the free space<br />
> 0,8 no grease<br />
For the initial lubric<strong>at</strong>ion, the fill level in the roller bearing must only reach up to lowest rolling element. Higher fill<br />
levels would lead to increased he<strong>at</strong>ing of the roller bearing and to foaming and therefore to prem<strong>at</strong>ure oxid<strong>at</strong>ion<br />
of the lubricant.<br />
Cylindrical roller bearings<br />
NU10<br />
NU2<br />
NU22<br />
NU23<br />
NU3<br />
NU4<br />
NN30K<br />
NNU40<br />
9<br />
7<br />
6<br />
4<br />
2 – 3<br />
1<br />
6<br />
4<br />
2 – 3<br />
7<br />
5<br />
4<br />
2<br />
3<br />
2<br />
5<br />
7<br />
Bearing series Curve<br />
Tapered roller bearings<br />
302<br />
303<br />
313<br />
320<br />
322<br />
323<br />
329<br />
Spherical roller bearings<br />
213<br />
222<br />
223<br />
230<br />
231<br />
232<br />
239<br />
240<br />
241<br />
3 – 4<br />
2<br />
2<br />
6<br />
3 – 4<br />
1 – 2<br />
7 – 8<br />
3<br />
4<br />
2<br />
6<br />
4<br />
3 – 4<br />
8<br />
5<br />
3
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