All metric taper pins have a taper ratio of ______

This question was previously asked in
ISRO SHAR Technician B Fitter 29 April 2018 Official Paper
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  1. 1 in 100
  2. 1 in 50
  3. 1 in 25
  4. 1 in 20

Answer (Detailed Solution Below)

Option 2 : 1 in 50
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ISRO Technician B: Fitter Full Test 1
60 Qs. 180 Marks 90 Mins

Detailed Solution

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Explanation:

Taper pin hand reamer:

  • This reamer has tapered cutting edges for reaming taper holes to suit taper pins
  •  A taper pin reamer is made with a taper of 1 in 50, i.e. 1:50.
  • These reamers are available with straight or helical flutes.

 

Additional Information

Types of hand reamer: 

  • Parallel hand reamer with parallel shank
  • Hand reamer with pilot
  • Socket reamer with parallel shank
  • Taper pin hand reamer
  • Straight and helical fluted reamers

Helical fluted reamers are particularly suitable for remaining holes having keyway grooves or special lines cut into them.

Straight flute reamers are useful for general reaming work.

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