BDE-Mechanical

A modular approach to PT belts is used by link belts.

In a sense, thrust bearings are 90° angular-contact bearings.

The larger gear in a pair is called the gear, the smaller is called the pinion.

Dynamic sealing applications often call for pressure-energized seals.

Some manufacturing processes increase bearing life.

At light loads an externally pressurized sleeve bearing tends to be stiffest, followed by rolling-element bearings and self-acting sleeve bearings.

Limiting speed values for instrument bearings are almost impossible to determine.

The variety of plastic chain available includes traditional designs with discrete links that connect to form almost any length, and newer designs that include one, two, and three parallel strength members.

Linear rolling-element bearings are either of the recirculating or nonrecirculating variety.

Commercial lubricants are grouped into three generic types: oils, greases, and solid films.

Linear-motion bearings deal with the problem of providing low-friction translational (rather than rotational) motion.

Seal selection is often an imprecise and time-consuming process, involving numerous compromises.

Radial lip seals, also know as oil or shaft seals, are primarily used for retaining lubricants in equipment having rotating or oscillating shafts.

Simple fittings and single-point devices up to automatic centralized systems can be considered lubricating systems.

Although split-ring seals are most often used for reciprocating motion, they are sometimes applied to hydraulic swivel joints and transmissions.