Magnetic feedthroughs are the ideal way to transfer rotational motion from atmosphere into a vacuum or overpressure environment. Benefits include friction-less motion, high torque transmission, high-speed capability (>10,000 rpm), low drag torque, smooth motion, and no particle generation — maintaining process cleanliness over long operating periods.
Common Uses
• Cost-effective replacement for O-ring rotary feedthroughs
• Sample handling, positioning, and robotics
• Substrate rotation in vacuum chambers
• Agitation of fluids under vacuum
• Damped, vibration-free applications
• Hermetic sealing for clean environments
Our product range includes standard and special feedthroughs. We also supply retrofits for conventional feedthroughs from other manufacturers. Custom designs are available to optimize performance at competitive pricing.
| Standard Specification |
| Leak rate |
1 × 10−9 std cc/s He |
| Vacuum range |
8 × 10−7 Torr |
| Max. operating pressure |
28 psi |
| Bearing lubrication |
Fomblin / Krytox |
| Specification for CF Flange |
| Leak rate |
1 × 10−11 std cc/s He |
| Vacuum range |
5 × 10−10 Torr |
| Ferrofluid Options |
| Standard ferrofluid |
Base oil: Hydrocarbon; 0–80 °C |
| Reactive-gas ferrofluid |
Base oil: Perfluorinated Polyether (PFPE); 0–90 °C |
| Part Number System |
| S/H |
F/B/T/C |
N/A |
Shaft |
Cooling |
Bearing |
Mounting |
| S = solid |
F = flange |
N = non-active |
025 = 0.25″ |
W = water |
N = ordinary |
C133 = CF1.33 |
| H = hollow |
B = baseplate |
A = active |
100 = 1.00″ |
N = none |
H = overload |
C275 = CF2.75 |
| |
T = thread |
|
|
|
C = cantilever |
O6 = 6″ o-ring flange |
| |
C = cartridge |
|
|
|
O = special |
O7 = 7″ o-ring flange |
| |
|
|
|
|
|
516 = 5/16-24; 716 = 7/16-20; 100 = 1″ plate |
Solid Shaft — CF Flange
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
Price |
| SFN025NN-C133 |
0.250 |
0.750 |
3.250 |
1.750 |
0.750 |
$822.00 |
| SFN025NN-C275 |
0.250 |
1.500 |
4.060 |
2.560 |
0.750 |
$822.00 |
| SFN025WN-C275 |
0.250 |
1.500 |
4.060 |
2.560 |
0.750 |
$1,554.00 |
| SFN038NN-C275 |
0.375 |
1.500 |
4.060 |
2.560 |
0.750 |
$901.00 |
| SFN038WN-C275 |
0.375 |
1.500 |
4.560 |
3.060 |
0.750 |
$950.00 |
| SFN050NN-C275 |
0.500 |
2.375 |
8.656 |
4.906 |
2.500 |
$1,084.00 |
Solid Shaft — O-Ring Flange
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
B.C. |
O-R face seal |
Price |
| SFN050NN-O6 |
0.50 |
2.87 |
6.03 |
3.56 |
1.22 |
4.75 × 4 |
V234 |
$1,307.00 |
| SFN050WN-O6 |
0.50 |
2.87 |
6.03 |
3.56 |
1.22 |
4.75 × 4 |
V234 |
$1,3495.00 |
| SFN050WN-O7 |
0.50 |
5.00 |
16.32 |
6.00 |
4.32 |
6.00 × 6 |
V351 |
$2,218.00 |
| SFN075WN-05 |
0.75 |
3.00 |
9.39 |
4.88 |
1.84 |
6.00 × 6 |
V337 |
$3,584.00 |
| SFN075NN-06 |
0.75 |
2.87 |
6.03 |
3.56 |
1.25 |
4.75 × 4 |
V234 |
$1,979.00 |
| SFN100WN-06 |
1.00 |
4.00 |
12.625 |
5.38 |
3.00 |
5.00 × 6 |
V340 |
$2,200.00 |
Solid Shaft — Thread Mount
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
B.C. |
O-R face seal |
Price |
| STN019NN-516 |
0.187 |
0.63 |
2.562 |
1.58 |
0.482 |
0.28 |
V012 |
$619.00 |
| STN025NN-716 |
0.25 |
0.75 |
3.437 |
1.937 |
0.75 |
0.375 |
V015 |
$703.00 |
| STN050NN-114 |
0.5 |
2.87 |
8.812 |
5.072 |
1.25 |
1.51 |
V128 |
$846.00 |
| STN050WN-114 |
0.5 |
2.87 |
8.812 |
5.072 |
1.25 |
1.51 |
V128 |
$1,287.00 |
| STN075NN-114 |
0.75 |
2.87 |
8.812 |
5.072 |
1.25 |
1.51 |
V128 |
$1,228.00 |
| STN075WN-114 |
0.75 |
2.87 |
8.812 |
5.072 |
1.25 |
1.51 |
V128 |
$1,406.00 |
Solid Shaft — Baseplate Mount
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
B.C. |
O-R face seal |
Price |
| SBN025NN-100 |
0.25 |
1.625 |
3.44 |
1.93 |
0.75 |
1.68 |
V026 |
$703.00 |
| SBN025NN-100E |
0.25 |
1.618 |
3.12 |
1.62 |
0.75 |
1.37 |
V026 |
$665.00 |
| SBN025NN-150 |
0.25 |
2.12 |
3.97 |
2.47 |
0.75 |
2.22 |
V132 |
$817.00 |
| SBN025NN-075 |
0.25 |
1.625 |
3.44 |
1.93 |
0.75 |
1.68 |
V026 |
$703.00 |
| SBN038NN-100 |
0.375 |
1.62 |
3.39 |
1.65 |
0.865 |
1.30 |
V026 |
$743.00 |
| SBN038NN-150 |
0.375 |
2.12 |
3.97 |
2.47 |
0.75 |
2.22 |
V132 |
$822.00 |
Hollow Shaft — Cartridge Mount
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
f (in) |
O-R OUTER |
O-R INNER |
Price |
| HCN050NN |
0.5025 |
1.9975 |
3.215 |
2.75 |
0.375 |
1.25 |
V032 |
V014 |
$1,218.00 |
| HCN100NN |
1.0025 |
2.6225 |
3.339 |
2.75 |
0.50 |
2.00 |
V037 |
V022 |
$1,554.00 |
| HCN150NN |
1.5025 |
3.2475 |
3.714 |
3.00 |
0.625 |
3.00 |
V041 |
V029 |
$2,242.00 |
| HCN200NN |
2.0025 |
3.7475 |
3.966 |
3.25 |
0.625 |
3.50 |
V153 |
V033 |
$2,683.00 |
| HCN300NN |
3.0025 |
5.2475 |
4.464 |
3.625 |
0.75 |
4.50 |
V159 |
V151 |
$3,708.00 |
Hollow Shaft — O-Ring Flanged
| VPC P/N |
a (in) |
b (in) |
c (in) |
d (in) |
e (in) |
f (in) |
O-R OUTER |
O-R INNER |
Price |
| HFN050NN-O6 |
0.5025 |
2.75 |
3.215 |
2.75 |
0.38 |
1.25 |
V238 |
V014 |
$1,171.00 |
| HFN050WN-O6 |
0.5025 |
2.75 |
3.215 |
2.75 |
0.38 |
1.25 |
V238 |
V014 |
$1,891.00 |
| HFN100NN-O7 |
1.0025 |
3.00 |
3.34 |
2.75 |
0.50 |
2.00 |
V244 |
V022 |
$1,861.00 |
| HFN100WN-O7 |
1.0025 |
3.00 |
3.34 |
2.75 |
0.50 |
2.00 |
V244 |
V022 |
$2,277.00 |
| HFN150NN-O7 |
1.5025 |
3.75 |
3.714 |
3.00 |
0.625 |
3.00 |
V244 |
V029 |
$2,250.00 |
| HFN150WN-O7 |
1.5025 |
3.75 |
3.714 |
3.00 |
0.625 |
3.00 |
V244 |
V029 |
$2,906.00 |
| HFN200NN-O7 |
2.0025 |
4.18 |
3.966 |
3.25 |
0.625 |
3.50 |
V244 |
V033 |
$2,980.00 |
| HFN200WN-O7 |
2.0025 |
4.18 |
3.966 |
3.25 |
0.625 |
3.50 |
V244 |
V033 |
$3,302.00 |
| HFN300NN-O10 |
3.0025 |
5.87 |
4.717 |
3.875 |
0.75 |
4.50 |
V262 |
V151 |
$4,029.00 |
| HFN300WN-O10 |
3.0025 |
5.87 |
4.717 |
3.875 |
0.75 |
4.50 |
V262 |
V151 |
$4,935.00 |
Part Number Cross Reference
Solid Shaft — CF Flange
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| SFN025NN-C133 |
KLFDCF025133 |
FE103915 |
1/4″ shaft, CF1.33 flange |
| SFN025NN-C275 |
KLFDCF025275 |
FE103532 |
1/4″ shaft, CF2.75 flange |
| SFN025WN-C275 |
KLFDCF025275W |
FE103501 |
1/4″ shaft, CF2.75 flange, water cool |
| SFN038NN-C275 |
KLFDCF037276 |
FE103154 |
3/8″ shaft, CF2.75 flange |
| SFN038WN-C275 |
KLFDCF037275W |
FE103912 |
3/8″ shaft, CF2.75 flange, water cool |
| SFN050NN-C275 |
KLFDCF050276 |
FE103909 |
1/2″ shaft, CF2.75 flange |
Solid Shaft — O-Ring
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| SFN050NN-O6 |
KLFDOF05060 |
FE103244 |
1/2″ shaft, 6″ o-ring flange |
| SFN050WN-O6 |
KLFDOF05060W |
FE103182 |
1/2″ shaft, 6″ o-ring flange, water cool |
| SFN050WN-O7 |
KLFDOF05070W |
FE103329 |
1/2″ shaft, 7″ o-ring flange, water cool |
| SFN075WN-O5 |
KLFDOF07550W |
FE103904 |
3/4″ shaft, 5″ o-ring flange, water cool |
| SFN075NN-O6 |
KLFDOF07560 |
FE103246 |
3/4″ shaft, 6″ o-ring flange |
| SFN100WN-O6 |
KLFDOF10060W |
FE103259 |
1″ shaft, 6″ o-ring flange, water cool |
Solid Shaft — Thread Mount
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| STN019NN-516 |
KLFDTM018516 |
FE103971 |
3/16″ shaft, 5/16-24 |
| STN025NN-716 |
KLFDTM025716 |
FE103978 |
1/4″ shaft, 7/16-20 |
| STN0505NN-114 |
KLFDTM050114 |
FE103191 |
1/2″ shaft, 1″-14 |
| STN0505WN-114 |
KLFDTM050114W |
FE103204 |
1/2″ shaft, 1″-14, water cool |
| STN075NN-114 |
KLFDTM075114 |
FE103193 |
3/4″ shaft, 1″-14 |
| STN075WN-114 |
KLFDTM075114W |
FE103206 |
3/4″ shaft, 1″-14, water cool |
Solid Shaft — Baseplate Mount
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| SBN025NN-10 |
KLFDBP02510 |
FE103237 |
1/4″ shaft, 1.0″ mounting plate |
| SBN025NN-10E |
KLFDBP02510E |
FE103519 |
1/4″ shaft, 1.0″ mounting plate |
| SBN025NN-15 |
KLFDBP02515 |
FE103979 |
1/4″ shaft, 1.5″ mounting plate |
| SBN025NN-075 |
KLFDBP02575 |
FE103236 |
1/4″ shaft, 0.75″ mounting plate |
| SBN038NN-10 |
KLFDBP03710 |
FE103664 |
3/8″ shaft, 1.0″ mounting plate |
| SBN038NN-15 |
KLFDBP03715 |
FE103991 |
3/8″ shaft, 1.5″ mounting plate |
Hollow Shaft — Cartridge Mount
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| HCN050NN |
KLFDHC050 |
FE132405 |
1/2″ hollow cartridge |
| HCN100NN |
KLFDHC100 |
FE103319 |
1″ hollow cartridge |
| HCN150NN |
KLFDHC150 |
FE103320 |
1.5″ hollow cartridge |
| HCN200NN |
KLFDHC200 |
FE103321 |
2″ hollow cartridge |
| HCN300NN |
KLFDHC300 |
FE103322 |
3″ hollow cartridge |
Hollow Shaft — O-Ring Flanged
| VPC P/N |
LESKER P/N |
FERROTEC P/N |
Description |
| HFN050NN-O6 |
KLFDHOF05060 |
FE103358 |
1/2″ hollow, 6″ flange |
| HFN050WN-O6 |
KLFDHOF05060W |
FE105395 |
1/2″ hollow, 6″ flange, water cool |
| HFN100NN-O7 |
KLFDHOF10070 |
FE103359 |
1″ hollow, 7″ flange |
| HFN100WN-O7 |
KLFDHOF10070W |
FE105396 |
1″ hollow, 7″ flange, water cool |
| HFN150NN-O7 |
KLFDHOF15070 |
FE103360 |
1.5″ hollow, 7″ flange |
| HFN150WN-O7 |
KLFDHOF15070W |
FE103354 |
1.5″ hollow, 7″ flange, water cool |
| HFN200NN-O7 |
KLFDHOF20070 |
FE103361 |
2″ hollow, 7″ flange |
| HFN200WN-O7 |
KLFDHOF20070W |
FE103921 |
2″ hollow, 7″ flange, water cool |
| HFN300NN-O10 |
KLFDHOF30010 |
FE133218 |
3″ hollow, 10″ flange |
| HFN300WN-O10 |
KLFDHOF30010W |
FE133760 |
3″ hollow, 10″ flange, water cool |
