Rubber Seal, Oil Seal, Rubber Oil Seal manufacturer / supplier in China, offering Hmsa7/Basl/32/as/Tc Type Rotary Shaft Oil Rubber Seal, 48/Crw1/B/B1/Sb Type Rotary Single Lip Oil Seal, B1SL/BS/Crwa1/Tb Metal Cage Rotating Shaft Oil Seal and so on.
Min. Order / Reference FOB Price | |
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10 60,000Pres | US $999.00/ 60,000Pres |
Local Area: | Guangzhou, Guangdong, China |
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R&D Capacity: | OEM, ODM, Other |
Payment Terms: | T/T |
Material: | NBR, Viton, FKM, EPDM or Customized |
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Usage: | Rotary Shaft |
Type: | Assembled |
MediaMaximum temperature, depending on the materialsACMAEMEPDMFKMHNBRNBRVMQMineral oilsOils for motors+130°C+130°C-+170°C+130°C+100°C+150°COils for gearboxes+120°C+130°C-+150°C+110°C+80°C+130°COils for hypoid gears+120°C+130°C-+150°C+110°C+80°C-ATF oils+120°C+130°C-+170°C+130°C+100°C-Hydraulic oils+120°C+130°C +150°C+130°C+90°C-Greases-+130°C--+100°C+90°C-Fire-resistant
fluidsHFA group - Emulsion with more than 80% water----+70°C+70°C+60°CHFB group - Opposite solution (water in oil)----+70°C+70°C+60°CHFC group - Polymer aqueous solution--+60°C-+70°C+70°C-HFD group - Water-free synthetic fluids---+150°C---Other fluidsEL + L heating oil----+100°C+90°C-Air+150°C+150°C+150°C+200°C+130°C+90°C+200°CWater--+150°C+100°C+100°C+90°C-Water for washing--+130°C+100°C+100°C+100°C-Temperature rangeMin.-25°C-40°C-45°C-20°C-30°C-30°C-60°CMax.+150°C+150°C+150°C+200°C+150°C+100°C+200°C
The sealing lip of the shaft seal endures a higher temperature due to shaft rotation, and the significant pressure and friction on the mechanical parts. Good lubrication is therefore necessary to allow for a better release of heat and thus limits the temperature rise in the parts subjected to friction.
By definition, the temperature at the edge of the seal is raised when the rotation speed (and thus the linear speed) as well as the shaft diameter increases. FluidsMineral oilsIn general, this type of oil has few additives and is therefore perfectly suitable for all of the rubbers used for the rotary shaft seals. The following oils are suitable for rotating applications:motor oilsgearbox oilshypoid oilsATF oils for automatic gearboxestransmission oilssynthetic oilsThis type of oil is used to improve different characteristics such as the resistance to ageing, resistance to high temperatures, viscosity, etc. and has a good compatibility with the majority of rubbers used for the shaft seals. Tests may need to be performed beforehand to measure the degree of compatibility of this type of oil with the materials used. Among the synthetic oils are:brake fluidsfluids for automatic gearboxesfluids for suspensionsfluids for steering systemsfluids for hydraulic transmissionsHypoid oilsThis type of oil contains special components such as EP additives. These enable lubrication and thus limit any seizing at the bearings, for example. When affected by heat, these additives have the tendency to lead to deposits on the sealing lip. That is why we recommend using shaft seals with a sealing lip comprising return pumping leads in order to limit the increase in temperature and above all, to reduce these potential carbon deposits.GreasesGreases are generally applied to bearings etc. and require specific adaptation to provide favourable operating conditions for the shaft seal. To prevent the lip of the seal from sustaining more significant pressures than planned, we recommend positioning the lip seal on one side of the bearing in such a way so that the lip is not prematurely destroyed. We also recommend reducing the rotation speed by 50% when lubricated, to ensure that less heat escapes during friction.Aggressive fluidsIt is critical to choose the correct material to better resist different aggressive fluids (acids, solvents, chemical products, etc.). For applications in a rotating environment, we recommend using materials such as FKM rather than NBR. For operations that are dry or use very little lubrication, and where the rubbers do not resist certain aggressive fluids, we advise you to use our PTFE shaft seals.
SEAL DESIGN
Tolerance for the outside diameter of the seal (ØD)The table below indicates the pre-tightening for shaft seals on the housing diameter according to standard ISO 6194-1.Bore diameter
ØD1 (mm)Tolerances on the outside diameter ØD of the ringRoundness toleranceApparent metal cageRubber coatingCoating with groovesApparent metal cageRubber coatingØD1 ≤ 50.0+0.10 / +0.20+0.15 / +0.30+0.20 / +0.400.180.2550.0 < ØD1 ≤ 80.0+0.13 / +0.23+0.20 / +0.35+0.25 / +0.450.250.3580.0 < ØD1 ≤ 120.0+0.15 / +0.25+0.20 / +0.35+0.25 / +0.450.300.50120.0 < ØD1 ≤ 180.0+0.18 / +0.28+0.25 / +0.45+0.30 / +0.550.400.65180.0 < ØD1 ≤ 300.0+0.20 / +0.30+0.25 / +0.45+0.30 / +0.550.25% of ØD0.80300.0 < ØD1 ≤ 500.0+0.23 / +0.35+0.30 / +0.55+0.35 / +0.650.25% of ØD1.00500.0 < ØD1 ≤ 630.0+0.23 / +0.35+0.35 / +0.65+0.40 / +0.75--630.0 < ØD1 ≤ 800.0+0.28 / +0.43+0.40 / +0.75+0.45 / +0.85--
SHAFT DESIGN
Shaft materialRotation speed Hardness in HRC s ≤ 4.0 m/s45 HRC4.0 < s ≤ 10.0 m/s55 HRCs > 10.0 m/s60 HRC
Shaft diameter
Ød1 (mm)Tolerance Ød1 ≤ 3.0-0.060 / 03.0 < Ød1 ≤ 6.0-0.075 / 06.0 < Ød1 ≤ 10.0-0.090 / 010.0 < Ød1 ≤ 18.0-0.110 / 018.0 < Ød1 ≤ 30.0-0.130 / 030.0 < Ød1 ≤ 50.0-0.160 / 050.0 < Ød1 ≤ 80.0-0.190 / 080.0 < Ød1 ≤ 120.0-0.220 / 0120.0 < Ød1 ≤ 180.0-0.250 / 0180.0 < Ød1 ≤ 250.0-0.290 / 0250.0 < Ød1 ≤ 315.0-0.320 / 0315.0 < Ød1 ≤ 400.0-0.360 / 0400.0 < Ød1 ≤ 500.0-0.400 / 0
h11 (mm)
Shaft diameter
Ød1 (mm)Chamfer diameter
Ød3 (mm)Radius Ød1 ≤ 10.0Ød1 - 1.502.0010.0 < Ød1 ≤ 20.0Ød1 - 2.002.0020.0 < Ød1 ≤ 30.0Ød1 - 2.503.0030.0 < Ød1 ≤ 40.0Ød1 - 3.003.0040.0 < Ød1 ≤ 50.0Ød1 - 3.504.0050.0 < Ød1 ≤ 70.0Ød1 - 4.004.0070.0 < Ød1 ≤ 95.0Ød1 - 4.505.0095.0 < Ød1 ≤ 130.0Ød1 - 5.506.00130.0 < Ød1 ≤ 240.0Ød1 - 7.008.00240.0 < Ød1 ≤ 500.0Ød1 - 11.0012.00
R (mm)