Page 5 - SKF-SPEEDI-SLEEVE

Test results Diagram 1
SKF SPEEDI-SLEEVE wear test
The previous and new generation of SKF Abrasive media, test stopped at 500 hours
SPEEDI-SLEEVE products were tested for
abrasion resistance under both coarse and Sleeve wear
2
-2
fine dust conditions. A 500 hour contamina- [10 mm ]
tion test († diagram 1) showed that when 100
compared to the previous generation sleeve, Variation
the new generation SKF SPEEDI-SLEEVE Average
reduced abrasion by a factor of 1,5 and was 80
still operating efficiently.
To test sealing system effectiveness, a
2 000 hour life test was performed 60
(† diagram 2) using SKF SPEEDI-SLEEVE
new and previous generation products and
SKF WAVE seals made from the SKF fluoro
rubber material SKF Duralife. The test results 40
showed that SKF SPEEDI-SLEEVE new gen-
eration reduced the sealing lip wear and the
variation in the wear rate by approximately 20
30% compared to the previous generation
sleeve and outperformed a chromium-plated
surface by a factor of 2. This reduction 0
improves the sealing system reliability as well New Previous
as the predictability of the system service life. generation generation
Both tests were carried out under the same SKF SPEEDI- SKF SPEEDI-
operating conditions: SLEEVE SLEEVE

• temperatures up to 110 °C (225 °F)
• linear shaft speeds of up to 8,6 m/s
(1 700 ft/min) Diagram 2
Sealing lip wear test
In other tests, it was found that continuous Seals made from fluoro rubber, test stopped at 2 000 hours
salt spray at 35 °C (95 °F) produced no trace
of corrosion even after 600 hours. This opti- Sealing lip wear
2
-2
mized performance is made possible through [10 mm ]
the use of the new generation of SKF 20
SPEEDI-SLEEVE.
Variation
Average
15

10

5

0
Chromium- New Previous
plated generation generation
surface SKF SPEEDI- SKF SPEEDI-
SLEEVE SLEEVE

5