BDE-Mechanical

Hardware costs: In high-volume lots, sleeve bearings and bushings are considerably less costly than rolling-element bearings.

Although classical V-belts can be used individually, classical belts tend to be somewhat overdesigned for drives light enough to demand only one belt.

Although many different types of plastics have properties which make them suitable for bearing applications, the most commonly used are phenolics, acetals, UHMWPE, and nylon.

Electric brakes operate according to the same principles as electric clutches.

Gear tooth geometry is determined primarily by pitch, depth, and pressure angle.

Manual lubrication requires the use of a portable pump, which is not part of the machine, and an oil cup or grease fitting.

Packings are seals that normally are packed around a shaft or rod and compressed to provide a sealing effect.

Nonmetallic materials offer self-lubricating properties, high-temperature stability, solvent resistance, or low cost.

Brakes absorb energy and convert it to heat.

Centralized lubricating systems lubricate all the friction points from a single pump source.

Tin and lead-base babbitts are among the most widely used bearing materials.

Most brakes use some type of friction lining.

Spherical roller bearings offer an unequaled combination of high load capacity, high tolerance to shock loads, and self-aligning ability, but they are speed limited.

Rolling-element instrument bearings are precision bearings that include at least one of the following characteristics.