A conveyor is driven by a 2.5-hp high-starting-torque electric motor through a flexible coupling to a worm-gear speed reducer, whose speed ratio is 35, and then via a roller chain to the conveyor shaft that is to turn about 12 rpm; motor rpm is 1750. Operation is smooth, 8 hr./day and service factor can be taken as 1.2. Decide the chain pitch in inch.

A conveyor is driven by a 2.5-hp high-starting-torque electric motor through a flexible coupling to a worm-gear speed reducer, whose speed ratio is 35, and then via a roller chain to the conveyor shaft that is to turn about 12 rpm; motor rpm is 1750. Operation is smooth, 8 hr./day and service factor can be taken as 1.2. Decide the chain pitch in inch.

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter8: Computer Numerical Control

Section8.1: Cnc Basics

Problem 3RQ: Briefly describe a ball screw and a linear guide.

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