Paper Polished Shaft Surface Finish for Radial Lip Seals

The purpose of this study is to investigate the effects of shaft surface roughness, speed, seal inner diameter, and lip geometry on the rotary lip seal’s performance. For this reason, a test system was developed. In this test system, a cylinder block is placed on four load cells to monitor the friction torque generated between seal and counter face. Radial lip geometry was taken as the prior criteria to group the seals for experiments. Two different profiles (with and without dust lip) and three different inner diameters (30-35-40 mm) were selected for the tests. Three shaft surface roughness values for each diameter were also tested. One shaft surface roughness value is between the limits that are recommended in standards, and two others are greater and less than that limits. At the end of the systematical experiments, variations of friction torque with respect to shaft surface roughness, lip profile and shaft diameter have been determined.

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The effect of texture on the shaft surface on the sealing performance of radial lip seals

Science China Physics Mechanics and Astronomy ◽

10.1007/s11433-014-5404-6 ◽

2014 ◽

Vol 57 (7) ◽

pp. 1343-1351 ◽

Cited By ~ 6

Author(s):

Fei Guo ◽

XiaoHong Jia ◽

Zhi Gao ◽

YuMing Wang

Keyword(s):

Sealing Performance ◽

Lip Seals ◽

Shaft Surface

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The effect of axial position of contact zone on the performance of radial lip seals with a texturing shaft surface

Tribology International ◽

10.1016/j.triboint.2016.01.031 ◽

2016 ◽

Vol 97 ◽

pp. 499-508 ◽

Cited By ~ 12

Author(s):

Fei Guo ◽

Xiaohong Jia ◽

Longke Wang ◽

Yuming Wang

Keyword(s):

Contact Zone ◽

Axial Position ◽

Lip Seals ◽

Shaft Surface

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Effect of Shaft Surface Roughness on the Performance of Radial Lip Seals

Lubricants ◽

10.3390/lubricants6040099 ◽

2018 ◽

Vol 6 (4) ◽

pp. 99 ◽

Cited By ~ 2

Author(s):

Emilia Kozuch ◽

Petros Nomikos ◽

Ramin Rahmani ◽

Nick Morris ◽

Homer Rahnejat

Keyword(s):

Surface Topography ◽

Manufacturing Processes ◽

Lubrication System ◽

Roughness Parameters ◽

Lip Seal ◽

Practical Applications ◽

Sealing Performance ◽

Lip Seals ◽

Leakage Failure ◽

Shaft Surface

Reduction of leakage from the shaft–radial lip seal conjunction is critical in ensuring enduring performance of entire lubrication system. This paper investigates leakage from three types of shaft surfaces, finished using different manufacturing processes. The measurement of surface topography is conducted in order to determine the pertinent roughness parameters which correspond to the observed sealing performance in real practical applications. It is found that the skewness of the surface topography correlates well with the anecdotal leakage failure rate. To quantify this association, a hydrodynamic model, accounting for shaft roughness in a deterministic manner is developed. The results from the numerical analyses confirm that the lubricant mass flow rate is reduced in the case of negatively skewed surface height distributions, when compared with the positively skewed profiles.

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