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Baseplate Mount Solid Shaft - KJLC Standard, Ferro-Magnetic Fluid Rotary Feedthroughs

These Ferro-Magnetic Fluid sealed rotary feedthroughs are sealed to the baseplate by a fluorocarbon o-ring. The operator mounts these drives to the vacuum chamber by placing them in a suitable smooth-sided port in the chamber wall and using a capture nut. Some models are threaded only part way. They will accommodate various wall thicknesses when used with a sleeve or spacer over the unthreaded portion so that the nut compresses the o-ring.

In vacuum practice, the o-ring is compressed against the vacuum chamber's inner surface to limit virtual leaks. As shown in the dimensional drawings, most of these Ferro-Magnetic Fluid sealed feedthroughs are designed to be installed this way. A few, however, are intended to have the o-ring sealing against the atmosphere side surface. To reduce the virtual leaks associated with the thread, the feedthrough has a flat machined along the length of its threaded portion.

Please refer to the technical notes about loading, temperature, and other relevant information before specifying a feedthrough.

Features

  • Use a special magnetic fluid (ferrofluid) in place of an o-ring seal around dynamic parts
  • Fluid hermetically seals the shaft, making a liquid o-ring while a permanent magnet keeps the fluid in place
  • Ferrofluid magnetically held in stages formed by grooves machined into either the shaft or pole pieces
  • Unlike regular o-rings, the ferrofluid o-ring remains intact for years of operation despite the shaft's motion

Applications

  • Rotary stages
  • Barrels
  • Platens
  • Planetaries
  • Web coater rollers used in thin film deposition and etching processes

Specifications Table

Mounting Shaft O.D. Face Seal
O-Ring
Standard
1" BP
1/4"
O-V026
1" BP
1/4"
O-V026
1" BP
3/8"
O-V026
1.5" BP
1/4"
O-V132
1.5" BP
3/8"
O-V132
3/4" BP
1/4"
O-V026
Metric
32 mm BP
6 mm
P35
38 mm BP
10 mm
P41

Product Downloads
For a Manual for this product. Please click here.

For a Brochure for this product. Please click here.
Manipulation and Motion FAQ
Click here for answers to some of the most common questions we get asked.
Contact Us
To speak with someone directly, please call 1-412-387-9200 or email international@lesker.com.

Ordering Table

Model Dim
A
Dim
B
Dim
C
Dim
D
Dim
E
Dim
F
PartNo Price Add To
Cart
Model Dim
A
Dim
B
Dim
C
Dim
D
Dim
E
Dim
F
PartNo Price Add To
Cart
Standard (in.)
0.25"
1.625"
3.44"
1.93"
0.75"
1.68"
KLFDBP02510 $710.00
Standard (in.)
0.25"
1.618"
3.12"
1.62"
0.75"
1.37"
KLFDBP02510E $560.00
Standard (in.)
0.25"
1.625"
3.44"
1.93"
0.75"
1.68"
KLFDBP02575 $710.00
Standard (in.)
0.375"
1.62"
3.39"
1.65"
0.865"
1.3"
KLFDBP03710 $750.00
Standard (in.)
0.375"
2.12"
3.97"
2.47"
0.75"
2.22"
KLFDBP03715 $830.00

 

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