High Temperature Linear Actuator
High Temperature Linear Actuator
(OP)
Hi All,
I am looking for High Temperature Linear Actuator for Conveyor Oven Belt Tracking system.
The linear Actuator should withstand a temperature of 250-300 deg Centigrade or 480 deg F to 575 deg F
Can anyone help me to find suitable linear Actuator manufacturer for High Temperature Applications.
Thanks in Advance.
I am looking for High Temperature Linear Actuator for Conveyor Oven Belt Tracking system.
The linear Actuator should withstand a temperature of 250-300 deg Centigrade or 480 deg F to 575 deg F
Can anyone help me to find suitable linear Actuator manufacturer for High Temperature Applications.
Thanks in Advance.





RE: High Temperature Linear Actuator
Mike Halloran
Pembroke Pines, FL, USA
RE: High Temperature Linear Actuator
Probably have to make up your own.
As MikeHalloran said put the drive outside hot zone and feed-through. Could use similar to coveyor chain or belt and high temperature bearings or bushings. Limit sensors may have to be outside on drive like cam or encoder.
RE: High Temperature Linear Actuator
RE: High Temperature Linear Actuator
I checked with vendors, & found electric linear actuators are suitable only for 60-80(Max)deg centigrade.
RE: High Temperature Linear Actuator
RE: High Temperature Linear Actuator
As MikHalloran said: move it outside of your elevated temp area and call it a day.
RE: High Temperature Linear Actuator
rmw
RE: High Temperature Linear Actuator
Is the oven open (conveyor passes through at a steady rate) or closed (conveyor moves the parts in, door is closed, conveyor moves the parts out)?
If closed, is it vacuum, atmosphere, or overpressure?
It's unlikely you'll find an actuator that will just run at 250-300 C. But if that is the maximum temperature in the oven (heating by convection if in atmosphere, by radiation if relatively high vacuum), one could engineer a solution that uses an off-the-shelf actuator as a starting point. It would involve some combination of radiation shielding, thermal isolation, and active cooling (forced air, water).
As Mike Halloran noted, moving the actuator outside of the oven is a nice solution if possible. If the atmosphere inside the oven is controlled (some level of pressure or vacuum and/or precise mixture), there are a number of options to transmit linear or rotary motion between the two sides of the seal:
- Glyd ring or similar low friction sliding seal (linear or rotaty motion; reciprocating or continuous; least expensive by far)
- Ferrofluidic seal (linear or rotary motion; reciprocating or continuous; much more expensive than glyd rings)
- Metal bellows (reciprocating linear; cost depends on stroke; most robust from a sealing perspective)
Motion involving high temperatures, vacuum, and or high purity is a challenging but fun problem to solve. I've encountered it more than once in semiconductor manufacturing equipment, flame reactors, and furnaces.
Rob Campbell
Imagitec: Imagination - Expertise - Execution