Which of the
following is a typical disadvantage of a roller contact bearing?
निम्नलिखित में से कौन सा रोलर संपर्क बीयरिंग का एक विशिष्ट नुकसान है?
High initial
cost
High initial
cost
High
precision
Requires high lubrication
High initial
cost
A typical
disadvantage of a roller contact bearing is its high initial cost.
Hence, the correct option is (A).
&Key Points:-
Some
advantages and disadvantages of rolling contact bearing over sliding contact
bearing are
Advantages :
(i) Low
starting and running friction at low speeds
(ii) Ability
to sustain momentary shock loads
(iii) Low
maintenance cost and reliability of service
(iv) Ease
and accuracy of shaft alignment, mounting and erecting
Disadvantages
:
(i) High
initial cost
(ii) Low
resistance to shock loading
(iii) Produces
noise at high speed
(iv) Designing
of bearing housing is complicated
(iv) Designing
of bearing housing is complicated
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