PAES 303:2000 Agricultural Machinery Engineering
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Questions and Answers

What is the primary purpose of roller chains in agricultural machinery?

  • To reduce noise levels
  • To transmit power at high torque and low speed without slippage (correct)
  • To decrease the weight of the machine
  • To increase the speed of the machine

What is the distance between adjacent joint members of a chain, called?

  • Outside diameter
  • Pitch diameter
  • Chain diameter
  • Chain pitch (correct)

It is the diameter of the pitch circle that passes through the centers of the link pins as the chain is wrapped on the sprocket.

  • Caliper diameter
  • Pitch diameter (correct)
  • Outside diameter
  • Bottom diameter

For a sprocket with an odd number of teeth, what is the distance from the bottom of the tooth gap to that of the nearest opposite tooth gap?

<p>Caliper diameter (A)</p> Signup and view all the answers

What is the diameter of a circle tangent to the curve at the bottom of the tooth gap?

<p>Bottom diameter (D)</p> Signup and view all the answers

It is the diameter over the tips of the teeth

<p>Outside diameter (A)</p> Signup and view all the answers

What type of chain is shown in Figure 1?

<p>Multiple-strand chain (A), Single-strand chain (B)</p> Signup and view all the answers

What is the purpose of the normative reference PAES 304:2000?

<p>To provide provisions for keys and keyways for agricultural machines (B)</p> Signup and view all the answers

Flashcards

Roller Chain Purpose

Transmit power in agricultural machinery efficiently.

Chain Pitch

The distance between adjacent links on a chain.

Pitch Diameter

Diameter of circle through the link pin centers.

Caliper Diameter (Odd Sprocket)

Distance between bottom of opposite tooth gaps on a sprocket with odd teeth.

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Bottom Diameter

Diameter of circle tangent to the bottom of the tooth gaps.

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Outside Diameter

Diameter measured over the tips of the sprocket teeth.

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Multiple-Strand Chain

Chain with multiple parallel strands.

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PAES 304:2000 Purpose

Provides standards for keys and keyways in agricultural machines.

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Study Notes

Scope and Application

  • Establishes specifications and provides technical information for the proper application of roller chains and sprockets for drives in agricultural machinery.
  • Roller chains are used to transmit power at high torque and low speed without slippage.

Definitions

  • Chain pitch: distance between adjacent joint members.
  • Pitch diameter: diameter of the pitch circle that passes through the centers of the link pins as the chain is wrapped on the sprocket.
  • Bottom diameter: diameter of a circle tangent to the curve (called the seating curve) at the bottom of the tooth gap.
  • Caliper diameter: for a sprocket with an odd number of teeth, it is the distance from the bottom of the tooth gap to that of the nearest opposite tooth gap.
  • Outside diameter: diameter over the tips of the teeth.

Chains

  • Classified into single-strand and multiple-strand chains.
  • Dimensions of chains are given in Table 1.
  • Different types of links are shown in Figure 3.

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Description

This quiz covers the specifications and technical information for roller chains and sprockets in agricultural machinery, as outlined in the PAES 303:2000 standard.

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