Card №10 Introduce yourself!

The head of the chair: X.Jurabekova

The Ministry of Higher and Secondary Specialized Education

of the Republic of Uzbekistan
Andijan Machine-building Institute the chair of the “Uzbek languages and literature”
Card №19
1.Introduce yourself!

2. Read the text! Find new words and translate the text into Uzbek.
A gear is a machine component with Gear teeth. Gear teeth mesh together to transmit torque. When two gears engage, they form a gearset. The driving gear is called a pinion.
The simplest type of gear is a spur gear. Its teeth may project towards or away from the center. Angled helical gears mesh more smoothly than spur gears. Some helical gears have just one continuous tooth. These are called worms. A worm pairs with a worm gear.
Sometimes, gears convert rotational motion to linear motion. Rack and pinion gears serve this purpose. In other cases, a machine transmits power at an angle. This requires bevel gears.

3.Match the words or phrases (1-8) with the definitions (A-H).
1.ball bearing 2. thrust roller bearing 3.tapered roller bearing 4.thrust roller bearing 5. Axial, 6.radial 7.journal bearing 8. Rolling contact bearing

a. Bearing that uses cone-shaped rollers

b. bearing that uses metal cylinders
c. bearing that uses a lubricated tube
d. bearing that uses rolling parts to supports and direct motion
e. bearing that uses metal spheres
f. a bearing that uses barrel-shaped rollers
g. related to movement along an axis
h. related to movement across an axis1
The head of the chair: X.Jurabekova
The Ministry of Higher and Secondary Specialized Education
of the Republic of Uzbekistan
Andijan Machine-building Institute the chair of the “Uzbek languages and literature”
Card №18
1.Introduce yourself!
2. Read the text! Find new words and translate into Uzbek.
Dear Rick,
I just bought a twelve-year-old car. Should I change the timing belt to avoid slippage?
Jamie, North Springfield
Dear Jamie,
Your timing belt already has grooves that prevent slippage. The grooves also ensure synchronous rotation. They work like the links on a chain drive. But unlike chain drives, timing belts are rubber. Eventually they wear out and break. Have a mechanic check the strength of your timing belt. On the other hand, other belt drives can experience slippage. This occurs between the belt and the sheave. V-belts with shallow wedge angles are the most likely to slip.
Check and re-tension your belt drives regularly.
Rick Wallace, Automotive Expert