Standard Series F2B-***-B*** (φ 10mm or over)

This type has a housing case arranged on the vacuum side. It is suitable for saving space. In this specification, bearings are installed in both sides.
For shaft diameter of 15mm or over, end face flat processing is not covered by this specification.

Explanation of the model designation
See the detailed explanation here
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Product Specification

F2B-010-B F2B-012-B F2B-015-B F2B-020-B F2B-025-B F2B-030-B
Inquiry Inquiry Inquiry Inquiry Inquiry Inquiry Inquiry
A [mm] 10g6-0.005
-0.014
12g6-0.006
-0.017
15g6-0.006
-0.017
20g6-0.007
-0.020
25g6-0.007
-0.020
30g6-0.007
-0.020
B [mm] 112 112 128 144 148 169
C [mm] 79 79 88 102 99 109
D [mm] 49 49 48 57 49 49
E [mm] 69 69 79 89 94 94
F [mm] 8 8 10 10 12 12
H [mm] 36f7-0.025
-0.050
36f7-0.025
-0.050
42f7-0.025
-0.050
51f7-0.030
-0.060
56f7-0.030
-0.060
56f7-0.030
-0.060
J 6-Φ6.5PCD58 6-Φ6.5PCD58 6-Φ6.5PCD66 6-Φ9PCD75 6-Φ9PCD80 6-Φ9PCD80
M [mm] 6 6 6 6 6 6
N [mm] 35 35 41 50 55 55
O G40 G40 G45 G55 G60 G60
Shaft option1 Key groove (both ends) Key groove (both ends) Key groove (both ends) Key groove (both ends) Key groove (both ends) Key groove (both ends)
S [mm] 16 19 26 31 36 46
T [mm] 2.5+0.1
0
2.5+0.1
0
3+0.1
0
3.5+0.1
0
4+0.1
0
5+0.1
0
U [mm] 4+0.040
0
4+0.040
0
5+0.040
0
6+0.040
0
8+0.040
0
10+0.040
0
Shaft option2 Flat cut (both ends) Flat cut (both ends)        
S [mm] 15 18        
V [mm] 1 1        
Max. rotation rate [rpm] (*1) (*2) 3200 3200 2200 1900 1300 1300
Rated rotation rate [rpm] (*1) (*3) 2600 3200 2200 1900 1300 1300
Allowable axial load [N] (*4) 118 137 141 213 115 140
Allowable radial load [N] (*5) 118 137 141 213 115 140
Mass [kg] 0.7 0.7 1 1.5 1.8 2.1
Starting torque [N∙m]
(*1) (*6)
0.051 0.051 0.1 0.14 0.32 0.32
Allowable transmission torque [N∙m] 9 13 30 60 140 210
  • (*1): This is the numerical value when a magnetic fluid of standard vacuum specification (A type) is used. The value is different when a magnetic fluid of anti-corrosion specification (F type) or low vapor pressure and anti-corrosion specification (U type) is used.
  • (*2): The allowable rotation rate when no load is applied to the shaft.
  • (*3): The allowable rotation rate when the allowable radial load is applied.
  • (*4): The maximum axial load that can be applied to the center of magnetic fluid seal shaft.
    If the load combined with the radial load is applied, or if the load point is off the center of the shaft, please contact us from the Inquiry Form for the magnetic fluid and describe the load conditions in the form.
  • (*5): The maximum radial load that can be applied to the shaft end of magnetic fluid seal.
    If the load combined with the axial load is applied, or if the load point is far from the shaft end, please contact us from the Inquiry Form for the magnetic fluid and describe the load conditions in the form.
  • (*6): Starting torque is the maximum load torque upon starting of rotation. This is a reference value and not a guaranteed value. Recommended load torque for selecting a motor is about three times as high as the value described above.

Common Specification for Standard Products

Vacuum resistance 1.0x10-6Pa
Leakage rate (He) 9.9×10-11Pa・m3/sec or less
Operating atmosphere (*1) In vacuum / in inert gas / in corrosive gas
Materials used Housing SUS 304
Shaft SUS 630
Pole piece SUS 630
Bearing SUJ2
O-ring FKM
Bearing lubricant Vacuum side: fluorine vacuum grease
Atmosphere side: general-purpose case with rust inhibitor
Standard accessories (*2) O-ring
Washer and nut (LSB Series)
  • (*1): For application with corrosive gases, please specify a magnetic fluid of anti-corrosion specification or low vapor pressure and anti-corrosion specification.
    Also, some gas types and operating conditions require different support. Please contact our sales personnel to inform us of your operating environment.
  • (*2): The size of O-ring supplied is described on the page for details of each model.
    Also, the LSB Series are supplied with mounting washer and nut.
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