Question

What is the error for the true running of spindle taper for machines with taper larger than Morse No. 2?

(a) 0.03/100

(b) 0.01/100

(c) 0.04/300

(d) 0.04/100

I had been asked this question in my homework.

Enquiry is from Alignment Tests on Pillar Type Drilling Machine in portion Machine Tool Metrology of Engineering Metrology

Answer 1

Right answer is (c) 0.04/300

To elaborate: The error for the true running of spindle taper should not exceed 0.04/300 mm for machines with taper larger than Morse No. 2 and 0.03/100 mm for machines with taper upto Morse No. 2.