Nitto Kohki delvo DLT1173A, Руководство по эксплуатации

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(2) How to use a soft joint or a hard joint (DLT1973A)

Soft joint DLW4000 (included as standard)
According to ISO5393, a screw is defined to turn more than 720

in its seated position before it gets the
specified torque when it tightens a soft item (soft joint). Use the proper combination for the tightening
condition.
Attention: Note that some drivers may not be able to measure with a soft joint.

Combination of disc spring (DLW4010) for soft joint (separately sold)
The combination of disc springs (<><><><>) should be as the diagram below indicates. Do not change
the number (8) and the combination (direction) of disc springs in using a soft joint.
(3) Checking the measuring joints
Be sure to grease up the threaded portion of each measuring joint. Check the inside thrust bearing
regularly for damage.
Note In the measurement of ungreased threads, it may be that correct measurement is not possible,
for such reasons as accelerated thread wear. Before storage, be sure to loosen the threads.
Note It is recommended to replace the measuring joints at intervals of 2,500 operations or 1 year
as a guide.

Hard joint DLW4040 (separately sold)
According to ISO5393, a screw is defined to turn 30

in its seated position before it gets the specified
torque when it tightens a hard item (hard joint)