Is the worm gear actuator unit suitable for high temperature operation?
The actuator is normally suitable for operation at ambient temperatures of up to 200’F using standard greases and seals. Operation above 200’F will require special lubricants. For temperatures above 300T the life of even special lubricants is limited in direct proportion to increase in temperature and duration of exposure to such temperatures. At 400’F and above, the oil in the grease will vaporize and grease will carbonize and solidify. Applications of this type should be avoided. For temperatures above 250T advise Duff-Norton of full particulars of the duration of such temperatures. In some cases, it may be necessary to furnish unlubricated units, then the customer will supply the lubricant of his own choice. We suggest that a lubricant manufacturer be consulted for type of grease and lubrication schedule. As a general rule, the actuator unit should be shielded to keep ambient temperatures to 200’F or less. Seals for temperatures above 250’F are very expensive. Instead, we would subs
