Forum SDL-100/1, Operation Manual

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04-2016 PN: 651520-Y-BC-D - Revision: 10 SDL
Operating Instructions
D
R
A
WIN
G
S
Tightening torques for Nord Lock lock washers Several
Nord Lock bolt securing systems are used on the SDL
to generate safely lock bolted joints. Regarding the fact
that different sizes and metric grades are applied detailed
information from Nord Lock is given in the annex (refer
to annex „I Nord Lock Washer (excerpt from Third Party
Product information)“) to generate safe maintenance by
the user. If the tightening torque needed to fasten a screw/
nut is not explicitly written in this manual, please check the
screw/nut head an refer to the annex in order to find the
required fastening torque:
The metric grade and make of the bolt can be seen on top
of the bolt/nut.
Fig. 24: Bolt head marking
On Forum B + V Oil Tools Pipe handling Equipment
the metric grades 8.8, 10.9 and 12.9 are used and
the tightening torques can be found in the „a. Torque
Guidelines“
WARNING Please pay extra attention to the method
of tightening as the tightening torques may vary on the
methods.
INFO
As a result from tests the NORD LOCK washers
were safely secured even after reuse 30 times.
Only a limited part of the clamp load was lost
due to normal settlements between contact
surfaces. The cam edges of the washers got
rounded off but were still intact after the reuse
test.
The best thing to do is to make ocular inspection
of the washers during every maintenance.
Make sure that the cams (cam tops) look good
and that the teeth are not worn off. Lubricate
the joint and the mating surfaces if possible so
that the friction conditions do not change. When
reassembling, care should be taken that the two
washer halves are mated correctly.
If all these criteria are met, the washers can be
safely reused.
6.3 Drawing, Parts List and Spare Parts
6.3.1 Contact to Parts Department
INFO
Please contact the Forum B + V Oil Tools
Technical Support or one of the authorized
service companies specified in Chapter 1.9 to
order replacement parts or in the event of any
questions.