BDE-Mechanical

Basic dynamic load rating is the load at which 90% of a group of bearings can survive 1 million inner-race revolutions.

All wire rope and mechanical cable are fabricated from individual wires helically twisted into a strand.

Traction drives have been around for a long time but have not made a major impact on the power-transmission industry.

The primary factors affecting seal selection are temperature, wear resistance, abrasion, sealed pressure, face materials, vibration, and expected life.

Bearings materials are classified as through-hardened materials (used largely for ball bearings) and case-hardened materials (used largely for roller bearings).

Automatic and manual vehicle transmissions have always been competitive with each other.

Some unusual machinery configurations are best served by belts able to deliver power from both top and bottom surfaces.

There are three methods of transmitting power mechanically from shaft to shaft: chain drives, gears, and flexible belts.

Single-point lubrication is similar to separate lubrication because each friction point is distinct.

Pulsating loads, such as those generated by internal combustion engines and compressors, present special problems for V-belt drives.

The most reliable means for changing shaft speed remains a mechanical variable-speed transmission.

Metal-chain drives are normally used for applications below 3,000 rpm where accuracy and reliability must be greater than that provided by rubber belts.

Type Size Range Description Typical Uses

New developments let rotational molding compete with injection or blow molding.