NASA-LLIS-0255

Lessons Learned - Grinding Wheel Detachment

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:02:58Z
date available	2017-09-04T16:02:58Z
date copyright	08/26/1993
date issued	1993
identifier other	ROZCQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/66147
description abstract	Description of Driving Event: The Flexovit grinding wheel, National stock number 3460-00-027-0942, abrasive, resin bound, 7" by 1/4", shape 1397, grit 24, was released from a portable air powered grinder, commonly referred to as a "Bayflex Grinder", just after the grinder was turned off. The grinding wheel was propelled across the room by its inertial force created during the grinding operation. The problem is associated with the size of the flat surface on the nut, which is torqued to the flange on the grinder. The grinding wheels were manufactured with two different flat surface sizes for the nut, 1/16" and 3/8". The 1/16" flat surface may allow the grinding wheel to unthread itself from the grinder when the air is cut off. The grinding wheel with the 3/8" flat surface is the correct one to use.
language	English
title	NASA-LLIS-0255	num
title	Lessons Learned - Grinding Wheel Detachment	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1993
contenttype	fulltext
subject keywords	Hardware
subject keywords	Industrial Operations