Technical terms per letter "O"

Open gearbox (mech.) is a type of a gear transmission operating unprotected from wastes intrusion. Usually with a poor lubricant of thick consistency or even without lubrication.

Operational reliability (of a shoe break) - shoe breaks can be operated in the following conditions:
- at ambient temperatures from -40 to +40 ° C.
- at humidity level of 80% at 20 ° C.
- there must not be any metal and rubber destructing substances in environment.