SWDM40 OPERATION & MAINTENANCE MANUAL
or inclined working, within 1000 hours or half a year since the day of purchase (whichever
comes first), it should be repaired without charge when it can be operated normally but with
function failures.
4. Within 1000 hours or three months since the day of purchase (whichever comes first), the
machine can be operated but with function failures. For the quick-wear parts, such as spring,
rubber shock absorber, movable disc and pin shaft, these should be replaced without charge.
The after-sale service should be cancelled for following operations.
1. The damage of Kelly caused by above forbidden operations and requirements and smashed
rod.
2. Don’t maintain, keep and transport Kelly according to above requirements.
List and Illustration about Kelly with Standard Specification
1. If the Kelly is installed to a larger machine model, it
should be regarded as non-standard Kelly. E.g. 377
Kelly original for SWDM160, but install it to
SWDM220
2. MZ is for friction, JS is for machine lock. The most
sections and largest length for friction Kelly and
inter-lock Kelly is indicated on the left. If the Kelly
exceed that, it should be regarded as non-standard
Kelly. E.g. JS377-4X12.1m ， now the Kelly of
JS377-5X12.1m or JS377-4X13m are regarded as
non-standard Kelly.
3.If equipped with lower length and less section for
friction Kelly or inter-lock Kelly of every model, that
are regarded as standard Kelly. E.g.
MZ377-5X12.1m
，
the Kelly of MZ377-4X12.1m is a
standard one.
4. If inter-lock Kelly is refit to friction one with the
same sections and length, it should not be regarded as
non-standard one. But if friction Kelly is refit to
inter-lock Kelly with same sections and length, it
should be regarded as non-standard one. E.g.
JS377-4X12.1m is changed to MZ377-4X12.1m, not
as non-standard, MZ377-5X12.1m is changed to
JS377-5X12.1m, as non-standard.
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