Products

Profile Sb Outer Steel Shell Singe Lip Oil Seal

China Profile Sb Outer Steel Shell Singe Lip Oil Seal, Find details about China Oil Seal, Single Lip Oil Seal from Profile Sb Outer Steel Shell Singe Lip Oil Seal

Model NO.
SB SERIES
Standard
Standard
Color
Customized
Shaft Tolerance
ISO H 11
Cavity Tolerance
ISO H 7
Metal Shell
Low Carbon Steel
Rubber Part Material
NBR, Viton, FKM, EPDM or Customized
NBR Thermal Application
-25~+80 Celicus Degree
FKM Thermal Application
-20~+180 Celicus Degree
Pressure Data
0-0.05MPa
Reciprocation Speed
0-15m/S
Non-Standard
Accept Customized Products
Trademark
morgan
Transport Package
Polybag and Carton
Specification
6-1820mm
Origin
China
HS Code
4016931000
Model NO.
SB SERIES
Standard
Standard
Color
Customized
Shaft Tolerance
ISO H 11
Cavity Tolerance
ISO H 7
Metal Shell
Low Carbon Steel
Rubber Part Material
NBR, Viton, FKM, EPDM or Customized
NBR Thermal Application
-25~+80 Celicus Degree
FKM Thermal Application
-20~+180 Celicus Degree
Pressure Data
0-0.05MPa
Reciprocation Speed
0-15m/S
Non-Standard
Accept Customized Products
Trademark
morgan
Transport Package
Polybag and Carton
Specification
6-1820mm
Origin
China
HS Code
4016931000
Description
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.
Profile Sb Outer Steel Shell Singe Lip Oil Seal

Advantages
Good 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 forces
Applications
Shaft sealing
Motors
Pumps
Transmissions

Speed

The table below indicates the relationships between the linear speed, the rotation speed and the recommended material.
Profile Sb Outer Steel Shell Singe Lip Oil Seal
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] / 60,000

Pressure

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, following testing, for standard NBR or FKM shaft seals used on a shaft diameter less than 30 mm. Refer to the graph below:
Profile Sb Outer Steel Shell Singe Lip Oil Seal
For higher pressures, we recommend using high-pressure SCHP - TCHP shaft seals which, because of their specific design (shorter sealing lip, thicker rubber membrane, metal cage closer to the shaft), can support pressures of up to 1.0 MPa with speeds reduced to 0.3 m/s.

Temperature

The table below indicates the temperature limits, depending on the materials and fluids used.
MediaMaximum temperature, depending on the materials
ACMAEMEPDMFKMHNBRNBRVMQ
Mineral oilsOils 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 fluidsEL + 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 rangeMin.-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. The graph below gives an overview of the increase in temperature (in °C) at the point of contact on the sealing lip.
Profile Sb Outer Steel Shell Singe Lip Oil Seal
Profile Sb Outer Steel Shell Singe Lip Oil Seal

Fluids

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 ringRoundness tolerance
Apparent metal cageRubber coatingCoating with groovesApparent metal cageRubber coating
ØD1 ≤ 50.0+0.10 / +0.20+0.15 / +0.30+0.20 / +0.400.180.25
50.0 < ØD1 ≤ 80.0+0.13 / +0.23+0.20 / +0.35+0.25 / +0.450.250.35
80.0 < ØD1 ≤ 120.0+0.15 / +0.25+0.20 / +0.35+0.25 / +0.450.300.50
120.0 < ØD1 ≤ 180.0+0.18 / +0.28+0.25 / +0.45+0.30 / +0.550.400.65
180.0 < ØD1 ≤ 300.0+0.20 / +0.30+0.25 / +0.45+0.30 / +0.550.25% of ØD0.80
300.0 < ØD1 ≤ 500.0+0.23 / +0.35+0.30 / +0.55+0.35 / +0.650.25% of ØD1.00
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
Profile Sb Outer Steel Shell Singe Lip Oil Seal
Shaft material
Suitable 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 hardness
Shaft hardness will depend on the linear speed (in m/s) and the level of pollution.
Rotation speedHardness in HRC
s ≤ 4.0 m/s45 HRC
4.0 < s ≤ 10.0 m/s55 HRC
s > 10.0 m/s60 HRC
 
Surface roughness
The 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 tolerance
The shaft must have a tolerance of h11, in line with standard ISO 286-2
Shaft 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 radius
You 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 ≤ 10.0Ød1 - 1.502.00
10.0 < Ød1 ≤ 20.0Ød1 - 2.002.00
20.0 < Ød1 ≤ 30.0Ød1 - 2.503.00
30.0 < Ød1 ≤ 40.0Ød1 - 3.003.00
40.0 < Ød1 ≤ 50.0Ød1 - 3.504.00
50.0 < Ød1 ≤ 70.0Ød1 - 4.004.00
70.0 < Ød1 ≤ 95.0Ød1 - 4.505.00
95.0 < Ød1 ≤ 130.0Ød1 - 5.506.00
130.0 < Ød1 ≤ 240.0Ød1 - 7.008.00
240.0 < Ød1 ≤ 500.0Ød1 - 11.0012.00
 

You Might Also Like