Timken Industrial Seal Catalog
Timken Industrial Seal Catalog Timken Industrial Seal Catalog
6 Oil Seals Installation Instructions Installation Instructions Seals Equipment Inspection and Preparation Before installing any lip seal, equipment should be thoroughly inspected. Follow the specifications below for best results: Shaft Surface Finish [Roughness Average or AA (Arithmetic Average)] • With the exception of PS-1 (Model 61), all seals should have a surface finish within 10-20 µ in. (0.25-0.50 µm). • For PS-1 (Model 61), the surface finish should be within 4-8 µ in (0.10-0.20 µm). • The surface finish direction of all seals must be perpendicular to the shaft axis of rotation. Bore Surface Finish, Ra ([Roughness Average or AA (Arithmetic Average)] • The surface finish of all seals must be 100 µ in. (2.54 µm). • The surface finish direction of all seals must be perpendicular to the shaft axis of rotation. Shaft Surface Hardness, Rockwell C-Scale • With the exception of PS-1 (Model 61), all seals should have a surface hardness between 30-40 Rockwell C. • For PS-1 (Model 61), the surface hardness must be within 50-70 Rockwell C. Additional Specifications • Both the shaft and bore should include an edge relief (preferably an edge chamfer), as shown in Figures 7 and 8. See Tables 8 and 9 for specific values. • Both the shaft and bore should be clear of any defects, such as spiral-machining marks, burrs, sharp edges, nicks, scratches and corrosion. • Typically, the shaft has a wear groove created from previous seals. Make sure the new sealing lip does not seal in the same location. • When drive features such as keyways or splines are present, they must be covered using an installation tool similar to the one shown in Figure 9 below, and using “Installation Method D” shown in Figure 10 on the next page. If the use of a tool is prohibited by the size of the shaft, use one of the following options: • Polyethylene tape • Brass shim stock with smooth edges • Wooden plug with smooth edges Spring Figure 9: Seal Cross Section Seal Outside Diameter Sealing Lip • Inspect the sealing lip for any signs of damage, such as cuts, indentations and nicks. • Make sure that the spring (finger or garter type) is retained within the seal (bonded or assembled). • Inspect the seal OD, looking for any signs of damage, such as cuts (in rubber seals), indentations and nicks.
Seals Installation Instructions Installation Methods Installation Method A Thru Bore: Installation tool bottoms on machined face Installation Method C Thru Bore: Installation tool bottoms on shaft Solid Seal Installation Install the seal(s) using one of the proper installation methods shown in Figure 10. When using installation tooling, the diameter, or contact area, should not be more than 0.010" (0.254 mm) smaller than the bore diameter. If the use of an installation tool is prohibited by the size of the seal, then: • Rest a block of wood (piece of 2" x 4" or similar) on the seal and use a mallet to drive the seal into position. Do not hit the seal directly with the mallet, as it may cause damage. • When using this method, follow a star pattern (as shown in Figure 11) to avoid “cocking” of the seal. • Place the ends of the wooden block at positions 1 and 2 (as shown in Figure 11). Installation Method B Thru Bore: Seal bottoms on machined bore shoulder Installation Method D Thru Bore: Mounting thimble assists in compressing seal lip for easier installation Figure 10: Installation Methods • Hit the center of the board with the mallet. • Continue by rotating the wooden block to the appropriate positions (3 and 4, 5 and 6, 7 and 8), hitting the center of the block with the mallet each time. • Repeat the pattern until the seal is properly seated in the housing bore. The seal is fully seated when the difference between the seal surface and the housing surface is 0.010" (0.254 mm). 4 8 1 6 7 2 Figure 11: Star Pattern 5 3 Installation Instructions Oil Seals Split Seal Installation Ambient pressure/ non-flooded applications only • Apply a thin coat of lubricant to the seal lip and shaft. • Split the seal along the axis of rotation (shown in Figure 12) and place the seal around the shaft. Figure 12: Split Seal Separation • Beginning with the split ends, insert the seal into the housing bore. Make sure the splits ends of the seal are touching. • Working downwards on both sides, continue inserting the seal into the housing bore, finishing at the bottom. • Once the seal is properly seated in the housing bore, it should protrude from the housing surface by 0.015" (0.381 mm), as shown in Figure 13. The 0.015" protrusion is built into the width of the seal. The depth of the bore housing should be machined to the seal width specified on the packaging. Figure 13: Split Seal Installed Inspection After installation, inspect the sealing areas for leaks, paying special attention to the area around the sealing lip and the OD. Make sure that the sealing lip is not in the groove worn into the shaft from the previous seal. 7
- Page 1: Timken Industrial Seal Catalog High
- Page 4 and 5: Introduction At Timken, customers t
- Page 7 and 8: Technology Overview Turn to Timken
- Page 9 and 10: Engineering Data Comparing Shaft Le
- Page 11: Engineering Data Table 7: Shaft and
- Page 15 and 16: Seal & Material Selection Seal Sele
- Page 17 and 18: Oil Seals Product Information Large
- Page 19 and 20: Oil Seals Product Information Large
- Page 21 and 22: Oil Seals Product Information Shaft
- Page 23 and 24: Oil Seals Product Information Speci
- Page 25 and 26: Bearing Isolators Configurations Bo
- Page 27 and 28: Bearing Isolators Product Informati
- Page 29 and 30: Glossary Width Assembled Seal made
- Page 31 and 32: Oil Seals Appendix A - Product Iden
- Page 33 and 34: Oil Seals Appendix A - Product Iden
- Page 35 and 36: Oil Seals Appendix A - Product Iden
- Page 37 and 38: Oil Seals Appendix B - Obsolete App
- Page 39 and 40: Oil Seals Appendix C - Compound Com
- Page 41 and 42: Oil Seals Appendix C - Compound Com
- Page 43 and 44: Oil Seals Appendix C - Compound Com
- Page 45 and 46: Oil Seals Appendix D - Failure Anal
- Page 47 and 48: Oil Seals Appendix D - Failure Anal
- Page 49: Relationship Between RPM, FPM and S
- Page 52 and 53: M-2
- Page 54 and 55: Oil Seals by Model Number Model Num
- Page 56 and 57: Product Inches MM Model Code ID OD
- Page 58 and 59: Product Inches MM Model Code ID OD
- Page 60 and 61: Product Inches MM Model Code ID OD
6<br />
Oil <strong>Seal</strong>s Installation Instructions Installation Instructions <strong>Seal</strong>s<br />
Equipment Inspection and Preparation<br />
Before installing any lip seal, equipment should be<br />
thoroughly inspected. Follow the specifications below<br />
for best results:<br />
Shaft Surface Finish [Roughness Average or AA<br />
(Arithmetic Average)]<br />
• With the exception of PS-1 (Model 61), all seals<br />
should have a surface finish within 10-20 µ in.<br />
(0.25-0.50 µm).<br />
• For PS-1 (Model 61), the surface finish should be<br />
within 4-8 µ in (0.10-0.20 µm).<br />
• The surface finish direction of all seals must be<br />
perpendicular to the shaft axis of rotation.<br />
Bore Surface Finish, Ra ([Roughness Average or AA<br />
(Arithmetic Average)]<br />
• The surface finish of all seals must be 100 µ in.<br />
(2.54 µm).<br />
• The surface finish direction of all seals must be<br />
perpendicular to the shaft axis of rotation.<br />
Shaft Surface Hardness, Rockwell C-Scale<br />
• With the exception of PS-1 (Model 61), all seals<br />
should have a surface hardness between 30-40<br />
Rockwell C.<br />
• For PS-1 (Model 61), the surface hardness must<br />
be within 50-70 Rockwell C.<br />
Additional Specifications<br />
• Both the shaft and bore should include an edge<br />
relief (preferably an edge chamfer), as shown in<br />
Figures 7 and 8. See Tables 8 and 9 for specific<br />
values.<br />
• Both the shaft and bore should be clear of any<br />
defects, such as spiral-machining marks, burrs,<br />
sharp edges, nicks, scratches and corrosion.<br />
• Typically, the shaft has a wear groove created from<br />
previous seals. Make sure the new sealing lip<br />
does not seal in the same location.<br />
• When drive features such as keyways or splines<br />
are present, they must be covered using an installation<br />
tool similar to the one shown in Figure 9<br />
below, and using “Installation Method D” shown<br />
in Figure 10 on the next page. If the use of a tool<br />
is prohibited by the size of the shaft, use one of<br />
the following options:<br />
• Polyethylene tape<br />
• Brass shim stock with smooth edges<br />
• Wooden plug with smooth edges<br />
Spring<br />
Figure 9: <strong>Seal</strong> Cross Section<br />
<strong>Seal</strong> Outside Diameter<br />
<strong>Seal</strong>ing Lip<br />
• Inspect the sealing lip for any signs of damage,<br />
such as cuts, indentations and nicks.<br />
• Make sure that the spring (finger or garter type)<br />
is retained within the seal (bonded or assembled).<br />
• Inspect the seal OD, looking for any signs of<br />
damage, such as cuts (in rubber seals), indentations<br />
and nicks.
Change language