Rigaku Americas -- Products -- Vacuum products -- Inch-based models -- Solid shaft

Feedthroughs

Inch-based models

Magnetic fluid (ferrofluid) fills a small annular gap between a rotating shaft and a stationary magnetic pole piece. The gap is part of a high-energy magnetic circuit which includes the shaft and pole piece. The very large magnetic flux in the gap exerts a force on the fluid, holding it in place against pressure difference from atmosphere to vacuum, yielding a dynamic rotary seal in which there is no solid friction. Therefore, very long operating lifetimes are achieved.

Because the magnetic fluid has very low vapor pressure, it remains permanently in place for the entire lifetime of the seal, and does not contaminate the system. Some applications have special requirements (high temperature, highly reactive gases) which can be satisfied by selection of the optimum fluid from our family of fluid materials.

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FD-F1 style

FD-LSR style

FD-BS style

FD-CF style

FD (inch) series: Solid shaft rotary feedthroughs

Magnetic fluid sealing for high vacuum and other critical process applications

Ferrofluidics direct replacements

FD-F1 style: Solid, flange mount
FD-LSR style: Solid shaft, base plate (through hole)
FD-LSR style (long form): Low-profile through-hole mount (Long-form)
FD-BS style: Solid shaft, nose mount
FD-CF style: Solid shaft, CF (conflat) flange

FD-F1 style: solid shaft, flange mount

	0.500" Shaft 6.00" O-ring flange
Product No.	10C-8915-A
Model	FD-F1-0500
Max RPM Torque (lb-in)	10000 380
A (inch) B (inch) C (inch) D (inch)	1.22 0.38 3.56 6.03
E (inch, 2 places) F (inch) (hole pattern)	0.5000/0.4995 6.00 (4) x 0.750 dia on 4.750 dia BC
G (inch) H (O-ring)	2.87 2-234
J (end detail) (2 places)	0.125/.070/1.00 keyway (w/d/l)
FFC part no. FFC model no.	50A-103244 SB-500-FN-049

Other shaft and flange sizes and configurations available.
Heavy-duty versions available

FD-LSR style: Solid shaft, base plate (through hole)

Nut and washer supplied

Model	0.250" Shaft			0.375" Shaft
Model	0.75" Body	1.00" Body	1.50" Body	1.00" Body	1.50" Body
Product No. Model	10C-8909-B FD-LSR-0250-D	10C-8908-A FD-LSR-0250-A	10C-8909-A FD-LSR-0250-C	10C-8912-A FD-LSR-0375-C	10C-8911-B FD-LSR-0375-B
Max RPM Torque (lb-in)	15000 50	15000 50	15000 50	10000 160	10000 160
A (inch) B (inch) C (inch) D (inch)	0.75 0.25 1.68 3.44	0.75 0.25 1.68 3.44	0.75 0.25 2.10 3.85	0.88 0.35 1.30 3.39	0.75 0.25 2.22 3.97
E (inch, 2 places)	0.2500/0.2495	0.2500/0.2495	0.2500/0.2495	0.3750/0.3745	0.3750/0.3745
F (inch)	1.63	1.63	2.25	1.63	2.12
G (thread) H (O-ring)	0.75-16 2-026	1.00-14 2-026	1.50-12 2-132	1.00-14 2-026	1.50-12 2-132
J (end detail) 2 places	0.03 x 0.40 flat	0.03 x 0.40 flat	0.03 x 0.40 flat	0.04 x 0.88 flat	0.03 x 0.40 flat
FFC Part No. FFC Model No.	50A-103236 SB-250-GN-085	50A-103237 SB-250-AN-086	50A-103979 SB-250-CN-011	50A-108664 SB-375-AN-176	50A-103991 SB-375-CN-103

FD-LSR style: Solid shaft, base plate (through hole) Long Form

Nut and washer supplied

Model	0.250" Shaft	0.375" Shaft
Model	1.00" Body
Product No. Model	10C-8908-B FD-LSR-0250-B	10C-8911-A FD-LSR-0375-D
Max RPM Torque (lb-in)	15000 50	10000 160
A (inch) B (inch) C (inch) D (inch)	0.75 0.81 2.33 4.64	0.74 0.81 2.33 4.63
E (inch, 2 places)	0.2500/0.2495	0.3750/0.3745
F (inch)	1.62	1.62
G (thread) H (O-ring)	1.00-14 2-026	1.00-14 2-026
J (end detail) 2 places	0.03 x 0.40 flat	0.03 x 0.40 flat
K (inch)	1.50	1.62
FFC Part No. FFC Model No.	50A-104445 SB-250-AN-010	50A-103990 SB-375-AN-087

FD-BS style: Solid shaft, nose mount

Nut and washer not supplied

Style	0.188" Shaft	0.250" Shaft	0.500" Shaft	0.750" Shaft
Style	0.31" Neck	0.44" Neck	1.00" Neck
Product No. Model	10C-8917-A FD-BS-0188	10C-8917-B FD-BS-0250	10C-8913-B FD-BS-0500	10C-8916-A FD-BS-0750
Max RPM Torque (lb-in)	15000 7	15000 50	10000 380	7000 1400
A (inch) B (inch) C (inch) D (inch)	0.50 0.28 1.30 2.56	0.75 0.38 1.56 3.44	2.49 1.51 3.56 8.81	2.49 1.51 3.56 8.81
E (inch, 2 places) F (inch)	0.1875/0.1870 0.63	0.2500/0.2495 0.75	0.5000/0.4995 2.87	0.7500/0.7495 2.87
G (thread) H (O-ring)	5/16-24 2-012	7/16-20 2-015	1-14 2-128	1-14 2-128
J (shaft end) 2 places	0.03 x 0.37 flat	0.03 x 0.40 flat	0.125/0.070/1.00 keyway (w/d/l)	0.187/0.107/1.00 keyway (w/d/l)
FFC Part No. FFC Model No.	50A-103971 MB-188-LN-090	50A-103978 MB-250-KN-089	50A-103191 SB-500-AN-069	50A-103193 SB-750-AN-077

FD-CF style: Solid shaft, CF (conflat) flange

Style	0.250" Shaft		0.375" Shaft
Style	1.33" CF	2.75" CF
Product No. Model	10C-8918-A FD-CFM-0250	10C-8910-A FD-CF-0250	10C-8912-B FD-CF-0375
Max RPM Torque (lb-in)	15000 50	15000 50	10000 150
A (inch) B (inch) C (inch) D (inch)	0.75 0.28 1.75 3.25	0.75 0.50 2.56 4.06	0.75 0.50 2.56 4.06
E (inch, 2 places)	0.2500/0.2495	0.2500/0.2495	0.3750/0.3745
F (inch)	1.33	2.73	2.75
G (inch)	0.75	1.50	1.50
H (flange)	1.33" CF	2.75" CF	2.75" CF
J (shaft end) (2 places)	0.03 x 0.40 flat	0.03 x 0.40 flat	0.03 x 0.40 flat
FFC Part No. FFC Model No.	50A-103915 MB-250-BN-101	50A-103532 SB-253-BW-026	50A-103154 SB-375-BW-147

To select a feedthrough for a new application, locate the table for the appropriate shaft mounting style (through-hole, flanged, or bore mount). Dimensional and performance information is tabulated and keyed to an outline drawing.

To identify the Magnaseal direct replacement for a Ferrofluidics Corp. product, locate the FFC Part Number/Model Number at the bottom of each column of tabulated data. For FFC products not listed, or for application engineering assistance or information beyond the scope of the tabulated data, please contact Rigaku Vacuum Products.

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