Standard Series BSB-***-B

This is a flange-less and screw insertion type. Attaching and detaching is easy.

Key groove shaft processing is not covered by this sp, 40ecification.

Choose from the options below to see other series with the same properties:

 
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Explanation of the model designation

explanation of BSB-***-B*N* model designation

Product specification

  BSB-004-B BSB-005-B BSB-006-B BSB-008-B
Inquiry Inquiry Inquiry Inquiry Inquiry
A [mm] $4g6^{-0.004}_{-0.012}$ $5g6^{-0.004}_{-0.012}$ $6g6^{-0.004}_{-0.012}$ $8g6^{-0.005}_{-0.014}$
B [mm] 60 64 72 85
C [mm] 17 19 20 23
E [mm] 17 17 24 29
F [mm] 33 33 39 46
L [mm] 7 7 7 7
O (O-ring used) P10 P10 P14 P18
R M8×1 M8×1 M12×1 M14×1
Shaft option Flat cut (both ends) Flat cut (both ends) Flat cut (both ends) Flat cut (both ends)
S [mm] 8 10 10 12
V [mm] 0.5 0.5 0.5 1
Max. rotation rate [rpm]1,2 7600 7600 6400 4800
Rated rotation rate [rpm]1,3 4000 4000 4000 4000
Allowable axial load [N]4 12 22 35 72
Allowable radial load [N]5 12 22 35 72
Mass [kg] 0.06 0.06 0.15 0.26
Starting torque [N∙m]1,6 0.009 0.009 0.013 0.022
Allowable transmission torque [N∙m] 0.6 0.7 1.4 3.6

¹This 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.

²The allowable rotation rate when no load is applied to the shaft.

³The allowable rotation rate when the allowable radial load is applied.

⁴The 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.

⁵The 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.

⁶Starting 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 specifications for standard products

Vacuum resistance 1.0x10-6 Pa
Leakage rate (He) 9.9×10-11 Pa・m3/sec or less
Operating atmosphere¹  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 grease with rust inhibitor
Standard accessories² O-ring
Washer and nut (LSB Series)

¹For 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.

²The 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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