Sb Profile Single Lip Rotary Shaft Rubber Oil Seal
| Price: |
US $ 1-100/Piece |
| Min Order: |
10/Piece |
| Pay Type: |
T/T |
| Prod Model: |
SB series |
| Color And Dimension: |
Accept Custom Products |
| Delivery Date: |
15days |
| Work Media: |
Water, Lubricant, Greases and So on |
| Metal Shell: |
Low Carbon Steel |
| Rubber Part Material: |
NBR, Viton, FKM, EPDM or Customized |
| NBR Thermal Application: |
-30~+100 Celicus Degree |
| FKM Thermal Application: |
-20~+200 Celicus Degree |
| Pressure Data: |
0-0.05MPa |
| Reciprocation Speed: |
0-15m/S |
| Standard: |
Standard |
| Material: |
Bnr/FKM/Viton |
| Usage: |
Rotary Shaft |
Product Description
DescriptionThe standard shaft seals include the most recent profiles, standardised by ISO 6194, DIN 3760 or DIN 3761. They are generally pressure-free and come in different design shapes depending on the type of fluid, level of external pollution, qualities of the shaft and housing (hardness, surface roughness, material), speed, temperature, etc.The SB profile oil seal is a shaft seal composed of a single external metal cage with an internal rubber coating and a primary sealing lip with integrated spring.
AdvantagesGood radial rigidity, particularly for large diameters
Good stability when assembled, preventing the bounce-back effect
Sealing for low and high viscosity fluids
Modern primary sealing lip with low radial forcesApplicationsShaft sealing
Motors
Pumps
TransmissionsSpeed
The table below indicates the relationships between the linear speed, the rotation speed and the recommended material.
The shaft seals with an additional protective lip are limited to a speed of 8 m/s.Linear speed calculation:s (m/s) = [Ø shaft (mm) x speed (rpm) x π] / 60,000Pressure
The standard shaft seals are generally used in unpressurised environments, or for pressures between 0.02 and 0.05 MPa maximum.Higher pressures are acceptable, for standard NBR or FKM shaft seals used on a shaft diameter less than 30 mm. Temperature
The table below indicates the temperature limits, depending on the materials and fluids used.| Media | Maximum temperature, depending on the materials |
| ACM | AEM | EPDM | FKM | HNBR | NBR | VMQ |
| Mineral oils | Oils for motors | +130°C | +130°C | - | +170°C | +130°C | +100°C | +150°C |
| Oils for gearboxes | +120°C | +130°C | - | +150°C | +110°C | +80°C | +130°C |
| Oils 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
fluids | HFA group - Emulsion with more than 80% water | - | - | - | - | +70°C | +70°C | +60°C |
| HFB group - Opposite solution (water in oil) | - | - | - | - | +70°C | +70°C | +60°C |
| HFC group - Polymer aqueous solution | - | - | +60°C | - | +70°C | +70°C | - |
| HFD group - Water-free synthetic fluids | - | - | - | +150°C | - | - | - |
| Other fluids | EL + L heating oil | - | - | - | - | +100°C | +90°C | - |
| Air | +150°C | +150°C | +150°C | +200°C | +130°C | +90°C | +200°C |
| Water | - | - | +150°C | +100°C | +100°C | +90°C | - |
| Water for washing | - | - | +130°C | +100°C | +100°C | +100°C | - |
| Temperature range | Min. | -25°C | -40°C | -45°C | -20°C | -30°C | -30°C | -60°C |
| Max. | +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. Mineral oils
In 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 oils
- gearbox oils
- hypoid oils
- ATF oils for automatic gearboxes
- transmission oils
synthetic oils
This 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 fluids
- fluids for automatic gearboxes
- fluids for suspensions
- fluids for steering systems
- fluids for hydraulic transmissions
Hypoid oils
This 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.Greases
Greases 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 fluids
It 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 ring | Roundness tolerance |
| Apparent metal cage | Rubber coating | Coating with grooves | Apparent metal cage | Rubber coating |
| ØD1 ≤ 50.0 | +0.10 / +0.20 | +0.15 / +0.30 | +0.20 / +0.40 | 0.18 | 0.25 |
| 50.0 < ØD1 ≤ 80.0 | +0.13 / +0.23 | +0.20 / +0.35 | +0.25 / +0.45 | 0.25 | 0.35 |
| 80.0 < ØD1 ≤ 120.0 | +0.15 / +0.25 | +0.20 / +0.35 | +0.25 / +0.45 | 0.30 | 0.50 |
| 120.0 < ØD1 ≤ 180.0 | +0.18 / +0.28 | +0.25 / +0.45 | +0.30 / +0.55 | 0.40 | 0.65 |
| 180.0 < ØD1 ≤ 300.0 | +0.20 / +0.30 | +0.25 / +0.45 | +0.30 / +0.55 | 0.25% of ØD | 0.80 |
| 300.0 < ØD1 ≤ 500.0 | +0.23 / +0.35 | +0.30 / +0.55 | +0.35 / +0.65 | 0.25% of ØD | 1.00 |
| 500.0 < 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 | - | - |
Tolerance for the inside diameter of the seal (Ød)
Free and without constraint, the inside diameter of the sealing lip is always smaller than the diameter of the shaft. The pre-tightening or interference denotes the difference between these two values. Depending on the shaft diameter, the diameter of the sealing lip is generally considered to be less, between 0.8 and 3.5 mm.SHAFT DESIGN
Shaft materialSuitable materials are:- ordinary C35 and C45 steels used in mechanical construction
- 1.4300 and 1.4112 stainless steels for sealing water
- sprayed carbide coatings
- graphite
- malleable cast iron
- materials with a CVD and PVD coating
Not appropriate:- chrome coatings solidified through non-uniform wear
- plastic materials resulting from low thermal conductivity, which can lead to a disturbance in the transport of heat, an increase in temperature in friction areas with the shaft seal, as well as a potential softening
Shaft hardnessShaft hardness will depend on the linear speed (in m/s) and the level of pollution.| Rotation speed | Hardness in HRC |
|---|
| s ≤ 4.0 m/s | 45 HRC |
| 4.0 < s ≤ 10.0 m/s | 55 HRC |
| s > 10.0 m/s | 60 HRC |
Surface roughnessThe recommendations below must be considered for the quality of the shaft surface area.Standard conditions:- Ra = 0.2 to 0.8 µm and 0.1 for demanding applications
- Rz = 1.0 to 4.0 µm
- Rmax ≤ 6.3 µm
For pressurev > 0.1 MPa:- Ra = 0.2 to 0.4 µm and 0.1 for demanding applications
- Rz = 1.0 to 3.0 µm
- Rmax ≤ 6.3 µm
Shaft toleranceThe shaft must have a tolerance of h11, in line with standard ISO 286-2Shaft diameter
Ød1 (mm) | Tolerance
h11 (mm) |
|---|
| Ød1 ≤ 3.0 | -0.060 / 0 |
| 3.0 < Ød1 ≤ 6.0 | -0.075 / 0 |
| 6.0 < Ød1 ≤ 10.0 | -0.090 / 0 |
| 10.0 < Ød1 ≤ 18.0 | -0.110 / 0 |
| 18.0 < Ød1 ≤ 30.0 | -0.130 / 0 |
| 30.0 < Ød1 ≤ 50.0 | -0.160 / 0 |
| 50.0 < Ød1 ≤ 80.0 | -0.190 / 0 |
| 80.0 < Ød1 ≤ 120.0 | -0.220 / 0 |
| 120.0 < Ød1 ≤ 180.0 | -0.250 / 0 |
| 180.0 < Ød1 ≤ 250.0 | -0.290 / 0 |
| 250.0 < Ød1 ≤ 315.0 | -0.320 / 0 |
| 315.0 < Ød1 ≤ 400.0 | -0.360 / 0 |
| 400.0 < Ød1 ≤ 500.0 | -0.400 / 0 |
Chamfer and radiusYou are strongly advised to install a chamfer on the shaft so as not to alter the primary sealing sealing lip of the shaft seal during assembly. Please refer to the table below.Shaft diameter
Ød1 (mm) | Chamfer diameter
Ød3 (mm) | Radius
R (mm) |
|---|
| Ød1 ≤ 10.0 | Ød1 - 1.50 | 2.00 |
| 10.0 < Ød1 ≤ 20.0 | Ød1 - 2.00 | 2.00 |
| 20.0 < Ød1 ≤ 30.0 | Ød1 - 2.50 | 3.00 |
| 30.0 < Ød1 ≤ 40.0 | Ød1 - 3.00 | 3.00 |
| 40.0 < Ød1 ≤ 50.0 | Ød1 - 3.50 | 4.00 |
| 50.0 < Ød1 ≤ 70.0 | Ød1 - 4.00 | 4.00 |
| 70.0 < Ød1 ≤ 95.0 | Ød1 - 4.50 | 5.00 |
| 95.0 < Ød1 ≤ 130.0 | Ød1 - 5.50 | 6.00 |
| 130.0 < Ød1 ≤ 240.0 | Ød1 - 7.00 | 8.00 |
| 240.0 < Ød1 ≤ 500.0 | Ød1 - 11.00 | 12.00 |
Morgan Seals has the biggest vulcanizing machine(4000T) and different kinds of seal moulds. So for the non standard oil seals, please do not hesitate to contact with us. The following is the the picture of our production line and warehouse:
Our services:Guangzhou Morgan Seals Co., Ltd the expert in sealing solution field who combines the rich seals research and production experience of her parent firm with the advanced technology and administration of Morgan, Worcester. Morgan Seals Research and Development ability is based on her parent firm who has won awards as scientific research achievements for more than 1000 projects and over 200 of them won scientific and technological progress prizes of municipal, provincial, ministerial and national levels. At the same time, it also has one National Certified Laboratory, one National Engineering Research Centers and three Industry Level Inspection Centers.
Established by Guangzhou Mechanical Engineering Research Institute Co., Ltd. (51% share, hereinafter to be referred as GMERI) and Morgan Construction Co., Worcester, MA, U. S. A. (49%, hereinafter to be referred as Morgan, Worcester) in 2006, Guangzhou Morgan seals Company Ltd. Is a professional manufacturer for sealing products. Combined the rich seals research and production experience of GMERI with the advanced technology and administration of Morgan, Worcester, the joint venture is renowned for its modern production lines, persisting research & development, strict quality control, quality sales and after-sales service.
Guangzhou Mechanical Engineering Research Institute (GMERI) has been established since the year of 1959, and is a comprehensive first grade research institute directly under the former Ministry of Machinery Industry. GMERI is the expert in seals and lubrication field. It has won awards as scientific research achievements for more than 1000 projects and over 200 of them won scientific and technological progress prizes of municipal, provincial, ministerial and national levels. At the same time, GMERI also has one National Certified Laboratory, one National Engineering Research Centers and three Industry Level Inspection Centers.
Morgan Construction Co., Worcester, MA, U. S. A. Is the acknowledged world leader in rolling mill technology. Founded in 1888, by Charles Hill Morgan in Worcester, Massachusetts, Morgan continues to grow and expand with new steel technologies. Morgan has designed and installed more than 450 rod, bar, and billet mills in more than 40 countries around the world. These mills have set worldwide benchmarks for technological leadership, reliability and performance. In 2006, Morgan reported sales of 180 Million USD and employed around 1, 100 people in the U. S. A., China, India, the United Kingdom, and in Brazil.
Milestones
1959 Established as a research institute directly under the former Ministry of Machinery Industry.
1980: Established Quality Supervision Center for Rubber Seals
1999: Incorporated into China National Machinery Industry Corporation (Sinomach)
2002 Renamed as Guangzhou Mechanical Engineering Research Institute
2006 The Joint Venture Guangzhou Morgan Seals Co., Ltd. Was established by GMERI and Morgan, Worcester
At the same time, Guangzhou Morgan Seals Co., Ltd. Gets her ISO9001: 2000 certificate
2012 Established National Engineering Research Center of Rubber and Plastic Sealing
2015 SINOMACH Intelligence Technology Co., Ltd., was established
2017 Guangzhou Morgan Seals Co., Ltd. Updates her ISO9001: 2008 cetificate
