Marshalltown SG87SH SURFACE SHARK Floor Grinder - Manual (Page 13)

SG87Sh SuRFACE ShARK FLooR GRINDER PAGE 13
INSTALLING THE SG87SH SAFETY AND DUST
SHIELD ASSEMBLY KIT
Application: SG87SH SURFACE SHARK
The SG87Sh Floor Grinder is shipped from the
factory with the SG87Sh-1000 Safety and Dust Shield
Assembly Kit installed. because of the main frame
design configuration, normal use of the Floor Grinder
will place the rotating multi-accessory disc in close
proximity to vertical obstructions, including walls,
machinery and body parts. Normal operation of the
Floor Grinder is with the kit installed. If a specific job
application requires the removal of the safety and dust
shield, con tact the Customer Service Department for
assistance.There is no charge for this service.
D O N O T O P E R A T E T H E S G 8 7 S H
SURFACE GRINDER WITHOUT THE SG87SH-
SAFETY AND DUST SHIELD ASSEMBLY KIT
PROPERLY INSTALLED.
OPERATION
THEORY OF OPERATION
Application: SG87SH SURFACE SHARK
The SG87Sh Floor Grinder operates on the principle of
multi-accessory attachments being utilized at rotational
speeds to make direct contact with a work surface.
various types of multi-accessory attachments are
secured to recesses provided in the aluminum disc
located on the bottom of the machine. The specific
type of multi-accessory attachment utilized during the
grinding process directly affects the type of material
removed, the material removal rate and the resulting
flatness and smoothness of the surface.
The grinding process is directly controlled by these
conditions:
1) The use of a suitable mechanism (multi-accessory
attachment) of proper design and configuration to grind
the work surface and remove material while delivering
acceptable service life.
2) Sufficient static weight supporting the multi- accessory
attachment to allow it to effectively penetrate the work
surface and remove material.
3) Adequate horsepower capable of propelling the
multi-accessory attachment against the work surface
to deliver acceptable productivity rates.
Since no two materials are exactly alike, no two work
surface materials can be penetrated and removed by
the exact same method. The nature of the grinding
process, along with operator experience, skill and
common sense, would suggest that efficient and
productive material removal is a matter of trial and
error. Combinations of multi-accessory attachment
type, condition, and feed rate are direct factors that
will also determine the overall success of the job
application.
MULTI-ACCESSORY ATTACHMENTS AND
APPLICATIONS
Application: SG87SH SURFACE SHARK
While individual multi-accessory attachment design and
configuration may vary, basic operational characteristics
are identical: impact upon a work surface material and
remove a percentage of the material. This common
operational characteristic has led to the development
of the following popular multi-accessory attachments:
Grinding Stones
Grinding stones are offered in C10 coarse. All stones
incorporate silicon carbide as the abrasive medium
and employ a clay binder as the matrix material.
vitrified type stones utilize an oven baking process that
produces greater service life over other manufacturing
processes. As the clay material wears away, it
exposes new, sharp, edges of the imbedded silicon
carbide material. All stones have the identical 2" x 2" x
4" dimensions and are secured to the machine by the
use of a hardwood or plastic wedge. FIGuRE 1.
FIGuRE 1