Do rotary joints need a rotating restraint?

Product Announcement from KADANT

Repairing steam joints at each shutdown is often the result of reactive maintenance. Over time, the distribution of remaining steam joint life becomes very broad. For example, if the average life of a particular type of rotary joint is four years, eventually 25% of the rotary joints will have to be rebuilt or replaced each year. If you are working with a paper machine with 100 dryers (200 steam joints), will have 50 joints that have to be repaired or replaced each year. This would be 5-6 steam joints every 6 weeks.

preventative maintenance program reduces the total cost of ownership by preventing unscheduled shutdowns, reducing random failures, and providing more predictable costs and scheduling.  And it avoids the need to repair steam joints at every maintenance shutdown.