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Cartridge Mount Hollow Shaft - Ferrotec, Ferro-Magnetic Fluid Rotary Feedthroughs

Cartridge mounted ferrofluid rotary feedthroughs can replace existing vacuum shafts or spindles which use dynamic o-ring seals (defined as o-ring seals which press against a moving surface). Dynamic o-ring seals frequently cause leaks in processes using vacuum in a manufacturing environment. To remedy this, replace the shaft having the dynamic seal and select a cartridge feedthrough with an OD that slips inside the seal “well” in the process vacuum wall. The static o-ring seals on the cartridge’s grooved outer surface do not move, making them far less likely to leak than dynamic o-ring seals.

Ferrofluid 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

Dimensional Drawings


Product Brochure
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Manipulation and Motion FAQ
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Contact Us
To speak with someone directly, please call 1-412-387-9200 or email international@lesker.com.

Ordering Table

Bearings Shaft O.D. Mount
Flange
Outer
Oring
Inner
Oring
PartNo Price Add To
Cart
Bearings Shaft O.D. Mount
Flange
Outer
Oring
Inner
Oring
PartNo Price Add To
Cart
6906/BS
Accepts 1.000"(+0" / -0.002")
Cartridge
O-V037
O-V022
FE103319 $1,570.00
6906/BS
Accepts 1.500"(+0" / -0.002")
Cartridge
O-V041
O-V029
FE103320 $2,265.00
6911/BS
Accepts 2.000"(+0" / -0.002")
Cartridge
O-V153
O-V033
FE103321 P.O.R.
6903/BS
Accepts 0.500"(+0" / -0.002")
Cartridge
O-V032
O-V014
FE132405 $1,355.00
Radial/BS
Accepts 3.000"(+0" / -0.002")
Cartridge
O-V159
O-V151
FE133759 P.O.R.

 

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