And equally important, selecting the right wheel or caster will save money in the long run by heading off downtime, excessive maintenance costs, and premature replacement. Capacities shown in this catalog are based on 3 m.p.h. intermittent operation over smooth floors. Because of varying conditions and differing corporate philosophies, capacity ratings may differ from one manufacturer to the other and should never be used in place of specifications for making comparisons. And don't forget about floor protection. Special lubricants can be provided by the factory, as well as special bearings or sealed bearings.
Frequent movement demands longer-wearing components than occasional movement.
On smooth floors, the harder the tread the easier it will roll. See the Caster Specification Worksheet. Keyway machining of wheels is covered on page 69. Floor truck locks are shown on page 72. Special lubricants are available at slight extra cost for unusual operating or environmental conditions such as high heat or sub-zero temperatures, moisture or humidity, solvents or chemicals.