Screening Services and
Training
Last Update
4/14/2006
25092 Natama
Ct
This procedure is based upon a paper written by Screening Systems, Inc.
Laguna Hills, CA 92653-5607
How to: Properly Install All-Thread on to QRSTM
Type Tables
Proper installation for
All-thread rods into QRS type vibration tabletop inserts.
The most common reason for inserts coming loose from, or pulling out
of, the table surface is the installation of all-thread without using
washers between the nut and the tabletop.
If the washer is not used, the nut tightens on the top of the insert
allowing the insert to rock during vibration. This rocking
will
very rapidly loosen the insert and allow the threads to rip out of the
table.
Nuts and washers must also be used when fixtures, clamps, or cross-bars
are fastened to the table with all-thread or bolts such that a space
exists between the tabletop and fixture/clamp bottom surfaces.
The torque for both 3/8-16 and M-10X1.5 grade 8 bolts and steel nuts
should be between 23 to 30 FT-LBS. (31 to 41 N-m)
It is not advised to use stainless steel all-thread or stainless steel
bolts with the QRSTM type table as these have been known to
jam
within the table inserts. The galling of the similar
materials
with similar molecular structure causes this jamming.
For technical assistance contact Screening Services and Training via
e-mail. scrserv@cox.net
