Slewing rings Schaeffler Technologies AG & Co. KG - Industrial ...
Slewing rings Schaeffler Technologies AG & Co. KG - Industrial ...
Slewing rings Schaeffler Technologies AG & Co. KG - Industrial ...
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Grease operating life<br />
If relubrication is not possible, the grease operating life<br />
becomes the decisive factor.<br />
Based on experience, the guide value for the grease operating<br />
life in the majority of applications is higher than the guide<br />
value for the relubrication interval by a factor of 2.<br />
At operating temperatures above +70 ºC, the lubrication<br />
interval and therefore the grease operating life are<br />
reduced.<br />
In order to ensure operational reliability, the grease<br />
operating life should not exceed 3 years.<br />
Relubrication procedure<br />
Table 3, page 32, shows suitable lubricants for the raceway and<br />
gear teeth.<br />
If slewing <strong>rings</strong> operate under high to very high load and at low<br />
to very low speeds, lubricants with base oils up to ISO VG 1500<br />
can be used in order to improve the lubricant film, depending<br />
on the operating temperature. In such applications, please<br />
consult INA.<br />
The maintenance of bea<strong>rings</strong> is described in detail in<br />
INA Technical Product Information TPI 13. This TPI is available<br />
upon request from INA.<br />
Raceway<br />
During the lubrication procedure, foreign matter such as<br />
contaminants, dust, spray water and condensation that have<br />
entered the slewing ring are pressed out.<br />
If possible, the grease used for relubrication should be the same<br />
as that used in initial operation.<br />
Lubrication should always be carried out on bea<strong>rings</strong> that are<br />
warm from operation:<br />
■ clean the lubrication nipples.<br />
■ grease should then be pressed into the lubrication nipples<br />
until a collar of fresh grease forms around both seals<br />
(one bearing ring should slowly rotated during this process)<br />
– the old grease must be allowed to flow out unhindered.<br />
Before initial operation, it must be ensured that all the<br />
lubricant ducts to the bearing are filled with lubricant.<br />
Gear teeth<br />
If possible, the grease used should be the same as that used in<br />
initial operation.<br />
■ The gear teeth, especially the tooth root surface, must be<br />
cleaned.<br />
■ The gear teeth must be sprayed or brushed with grease.<br />
31<br />
INDUSTRIAL TECHNOLOGIES +38 044 4982194 www.ind-techno.com.ua
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