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NORTON
IHMUBHHBHD
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6" X 18"
TYPE S-3
HYDRAULIC
Surface Grinding
Machine
INSTRUCTION & PARTS MANUAL
No. 1608-8
NORTON COMPANY
MACHINE TOOL DIVISION
WORCESTER. MASSACHUSETTS. 0/606
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NORTON
r J
he Purpose of this manual is to acquaint the user with the
fundamental functions and adjustments of the NORTON 6x18
Surface Grinder Machine.
In the Parts Section, a procedure for ordering or for corre
spondence with regard to replacement parts is outlined. Ad
herence to this will avoid unnecessary delays.
machine tools
FOREWORD
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The descriptions, illustrations and specifications given in this Manual
were
correct at the time of printing. However, since the policy of Norton
Company is to constantly improve its machines, those built at later dates
may differ from these details.
6" x 18"
TYPE S-3
HYDRAULIC
Surface Grinding
Machine
NORTON
COMPANY
INSTRUCTION & PARTS MANUAL
No. 1608-8
W
orcester
, M
ass
form
. oi606
1 608 - 8 - 1 O - 6'7 - 2C
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TABLE SPEED CONTROL LEVER
\
.TABLE START-STOP LEVER
\
\ .CROSS
\
\ \
\
\ \
FEED CONTROL
TABLE
.REVERSE LEVER
DOGS
AND
FINE
DOWNFEED & HANDWHEEL.
INCREMENT
PUMP S WHEEL
VSTART-STOP
a a
:
HAND TABLE
TRAVERSE
LIFTING
HOLES/
CROSS FEED
HANDWHEEL
GREASE POINTS
COVER OIL RESERVOIR
OPTIONAL
EQUIPMENT
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AUTOMATIC CROSS FEED
INCREMENT
ADJUSTMENT
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are
TABLE LATCHES
(ON EACH END)
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UNCRATING
LIFTING
LEVELLING
TABLE OF CONTENTS
UNCRATING AND HANDLING
PREPARING MACHINE FOR OPERATION
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REASSEMBLY
Hose Connections
Hand Wheels
ELECTRICAL
MOUNTING WHEEL
GUARD
LUBRICATION
HYDRAULIC OIL
VERTICAL SLIDE
CROSS SLIDE
Cross Feed Setting
Cross Feed Direction Control
TABLE TRAVERSE
Table Speed Setting
Table Direction Control
Table Dog Setting
FAMILIARIZATION
TRUING
GRINDING THE WORK
ATTACHMENTS
Wet and Dry
Coolant through Wheel
High Speed
Radius and Tangent Angle Wheel Dresser
Power Wheelhead Positioner
OPERATING S-3
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CONSTRUCTION AND SERVICING
HYDRAULIC SYSTEM
Pressure Adjustment
Removal of Pump Motor
TABLE CONTROL VALVE
HAND TABLE TRAVERSE AND TABLE
CROSS FEED
VERTICAL SLIDE
Gib Adjustment
WHEEL SPINDLE
WHEEL DRIVE BELTS
CENTER GUIDE ROLLS
PARTS SECTION
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UNCRATING AND HANDLING
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UNCRATING
Your new NORTON 6x18"
Grinding Machine has been packed for shipment to provide the maximum
protection during transit. The machine is ruggedly designed and
carefully constructed to produce work of high quality, and therefore,
should receive the treatment of a precision tool.
For shipment, the machine has been set on a pallet and
securely blocked in place. A superstructure is built up around the
machine and pallet to provide rigidity and to contain detached components.
When unpacking the machine leave it on the pallet until it has been moved
to the location it will occupy. The pallet is strong enough to carry the
machine or to be used as a skid. Be careful when removing the crating
material that heavy blows do not strike the machine.
Many of the small components have been removed from the
machine for shipment and have been packed separately. Check the entire
shipment against the packing list. Report any discrepancies immediately.
LIFTING
Type S-3 Hydraulic Surface
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There are four two-inch diameter cored holes in the front
and back of the base through which bars may be extended for lifting the
machine. Light sheet metal covers may be clipped into these holes when
your machine arrives.
replaced when the machine has been set up in order to keep contaminating
elements from entering the hydraulic reservoir in the base. Please
exercise caution when sliding lifting rods through the holes to avoid
damage to the interior hydraulic and lubricating piping.
Slings rigged to the lifting bars should be spread, or blocks
placed between the slings and the machine so that the machine will not be
damaged during the lifting.
The machine weighs approximately 2, 600 pounds uncrated.
Lifting bars and wire or hemp ropes of sufficient capacity to handle this
weight should be selected.
These can be easily removed, and they should be
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LEVELLING
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The NORTON S-3 Surface Grinder has sufficient stability
built into it so that it may operate successfully on any substantial shop
floor.
When setting the machine in place, slide a steel plate
approximately 6 x 6 x 1/2" under eaeh corner. Now level the machine
by using a sensitive spirit level on the flat sliding table top. Level the
machine from front to back and from side to side by the four adjusting
screws in the base.
Once the level has been established it should last indefinitely,
but it is a good practice to check the level periodically. Checking
becomes more important when the machine has been set on a wooden
floor which may have a tendency to settle. If the machine is on a
concrete floor, be sure the machine is not attached to the floor.
PREPARING THE MACHINE FOR OPERATION
REASSEMBLY
There is very little reassembling to do upon receipt of a
NORTON S-3 Surface Grinder. On export shipments to some countries,
customs requirements make it necessary to ship motors and other
electrical equipment separately. In this case, of course, these units
must be mounted after the macnine has been received. In the majority
of cases, however, the motors and magnetic chucks are shipped mounted
on the machine.
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Remove the protective slushing compound from the bright
surfaces with an organic solvent.
After the machine has been placed, remove the three hold-down bolts
which hold the pump unit solidly against the back of the base. The pump unit,
which is spring mounted, is fixed solidly to prevent it from swinging in transit
and must be released by removal of the bolts before use. Remove the cover on
the front of the base and the pump unit - hold-down bolts etc. ,are fully exposed.
Be sure to remove the tie-down rods which hold the sliding table to the base
during shipment once the machine is in place.
Hose Connections
Be sure that all interior hose and pipe connections are tight.
Each hose is equipped at one end with a simple fitting and a union at the
other end. Loosen the union before tightening the fitting, otherwise, the
hose will take a twist which may ruin it. Be sure, also, in tightening
the union, that the hose does not twist.
hose will cause it to break quickly.
Hand Wheels
The hand wheels are easily mounted; refer to the figure 1
in this manual.
Hydraulic pulsations in a twisted
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ELECTRICAL CONNECTIONS
A qualified electrician should make the electrical connection
between the plant power line and the control box on the machine.
wiring diagram is included with each machine to assist in making this
connection and also to show the electricals found on your particular machine.
MOUNTING THE GRINDING WHEEL
The equipment grinding wheels are packed separately in the
box containing small parts.
sleeve or collet, tap the wheel lightly with a mallet.
indicates the wheel is sound; a dull tone means that the wheel may be
cracked and unsafe to use. Slip one of the blotters packed with the wheels
over the sleeve and then mount the wheel. The wheel slips on easily but
without any play. Do not force the wheel onto the sleeve since internal
strains and stresses will be set up in the wheel which may cause it to fail
when grinding.
sheet metal washer which is keyed to the sleeve, and finally, the flange.
Use the spanner wrench supplied with the machine to tighten the flange.
The
flange should be brought up only tight enough to hold the wheel securely.
Tightening too much also will cause dangerous stresses in the wheel.
With the wheel in place, slip on another blotter,
Before the grinding wheel is mounted on the
A
clear tone
A
then the
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The assembled wheel and sleeve fit on the spindle nose. Slide
the sleeve firmly into place and secure with the retaining nut. A special
wrench is provided for tightening the retaining nut. The nut has left-hand
threads.
If a variety of work is to be ground, requiring several wheels
and frequent wheel changes,
so that the wheel will be permanently mounted until it is discarded.
WHEEL GUARD
The wheel guard is made in two sections.
is held on the end of the wheel spindle housing by three bolts entering
from the housing.
may be swiveled by loosening the nuts. The front section of the guard
hooks over the three studs on the back section rim.
means of a latch on the right hand side.
The back section of the guard may be adjusted to tilt the
guard in a counterclockwise direction
a wet grinding attachment is used and when form truing.
The holes for these bolts are elongated so that guard
a
separate sleeve for each wheel is desirable
The back section
It
locks into place by
in
order to reduce the spray when
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DO NOT RUN GRINDING WHEEL WITHOUT MOUNTING THE
FRONT SECTION OF THE WHEEL GUARD IN PLACE.
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LUBRICATION
The machine was thoroughly lubricated before shipment.
It is recommended, though, to check all lubrication points before
running the machine.
There are four grease fittings on the machine; one on each
of the vertical ways at the back of the machine, one at the base of the
table reverse lever, and one for the cross feed half nut below the cross
feed saddle on the front of the machine. Use a calcium soap base
grease, or equivalent, of medium consistency and smooth texture
intended for general purpose greasing. Grease once a week.
There are two oil cups on the top of the vertical feed housing
which should be filled weekly with a high quality machine oil, 275 to
375 S. U. V.
The table ways are lubricated continuously
supplied from the main control valve,
to each table way was controlled by the two tee-handled needle valves and on
later machines by needle valves adjustable
oil manifold.
when the saddle is in the forward position.
fed. Remember
ways even though you intend to grind your work using hand table traverse,
flow of oil is critical. Too much oil will make the table and saddle n float
resulting in erratic grinding actions.
on the ways.
These valves are under the cross feed saddle and are exposed
to
(Figures 1 and 2).
with the exhaust oil
On earlier models, the rate of flow
by
screw drive slots located in
The cross feed ways are gravity
run the hydraulic pump each day in order to lubricate the
Too little oil will cause excessive wear
”
an
The
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HYDRAULIC OIL
The hydraulic oil reservoir is in the base. It has a capacity
of approximately
gage on the front lower right hand corner of the base.
filled by removing the metal cover from the front of the base and pouring
the oil through this opening.
contaminating
Always replace the cover.
The recommended hydraulic
hydraulic and lubricating oil with inhibitors
foaming and with additives for oiliness.
100F is recommended.
cleaned at least every six months, or more often if conditions warrant.
A suction type cleaning machine is the most effective.
15
gallons. The correct oil level is shown on the sight
The reservoir is
Caution should be used to avoid allowing
elements from entering the reservoir when adding oil.
oil is a high quality combination
for rust, oxidation,
An oil with 145 to 175 S. U. V. at
The oil should be changed and the reservoir
and
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OPERATING THE S-3
VERTICAL SLIDE
F
To raise or lower the grinding wheel, turn the handwheel
extending from the top of the vertical column. The motion of turning
the handwheel is transmitted through a set of beveled gears to the
vertical feed screw. The feed screw turns in a full nut which is
attached to the base. By turning the handwheel counterclockwise, the
wheel is lowered; conversely, clockwise turning raises the wheel.
The knurled knob in the center of the handwheel is used for making
fine adjustments. The feed rate of the hub is 1/5 the rate of the
handwheel.
Each complete turn of the vertical feed handwheel will
move the vertical slide . 050".
slide .010”. The handwheel is graduated in . 0005".
the pointer is graduated in . 0001".
The maximum vertical distance, table top to bottom of
standard 8" diameter wheel, is 15". The maximum vertical movement
of the wheelhead is 16".
CROSS SLIDE
Traversing the Cross Feed Saddle may be done either
manually or hydraulically. The handwheel in the middle of the front
apron is used for manual cross-feed. The handwheel is graduated
in increments of 0. 001".
the saddle toward the grinding wheel; counter-clockwise, away from
the wheel.
One turn of inner knob moves the
The vernier on
Turning the handwheel clockwise will move
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Cross-Feed Setting
When the table is operated hydraulically, the saddle will
feed automatically at each table reversal. This automatic cross-feed
is adjustable from zero to approximately . 100" per reversal. The
spring loaded knurled knob on the right hand side of the front apron
is pulled out and turned for the desired amount of cross-feed at each
reversal, as noted on the graduated
cross-feed hand wheel.
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Cross Feed Direction Control
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A handle on top of the saddle, so marked, controls the
direction of cross-feed. There are three positions for the handle;
pushing the handle away from the operator, the saddle will cross
feed automatically at each table reversal toward the wheel; set at
mid-point, the saddle may be moved in either direction by means of
the handwheel; pulling the handle toward the operator, the saddle will
cross-feed automatically away from the grinding wheel. The direction
of the cross-feed is reversed manually.
TABLE TRAVERSE
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The table can be traversed manually or hydraulically.
For manual movement, the table traverse handwheel on the extreme
left hand end of the saddle must be engaged by pushing towards the
saddle. The table will move in the same direction as the handwheel
is turned.
wheel must be disengaged from the table rack by pulling it out away
from the saddle.
wheel from spinning as the table is traversed hydraulically. Then,
the hydraulic table traverse can be started by pulling the table Start-
Stop lever out. This lever is to the right of the table traverse handwheel.
Table Speed Setting
directly below the Start-Stop lever and may be varied up to 150
feet per minute. The table speed will be " zero" when the handle is
horizontal and will increase as the handle is moved upward. Once the
desired speed has been found, it will not be affected by starting and
stopping the table if the Start-Stop lever is used.
Table Direction Control
Before the table can be traversed hydraulically, the hand-
This safety interlock feature keeps the table hand-
The speed of the table traverse is controlled by the handle
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The direction of hydraulic table traverse is controlled by
the lever on the top of the saddle, the handle of which points toward the
operator. The table will move in the same direction to that in which
the handle is moved. Table direction can be changed either manually
by moving the lever or by means of the table dogs which will trip the
lever as they pass.
Table Dog Setting
The table dogs on this machine can be set with finger pressure.
Hammering is not necessary to keep the dogs in place.
To realize fully the maximum grinding time savings, set
the table dogs 2j
at 125 f. p. m. table speed.
n to 3" in from the ends of the workpiece when grinding
This will compensate for the " overtravel"
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of the table dogs beyond the reverse lever. The overtravel
feature permitting smooth reversals at high table speeds. The table
dogs may have to be reset when the table speed is changed.
FAMILIARIZATION
Having read the previous sections, set the machine up and
try the controls. Push the Table Traverse Handwheel in so it engages
the table rack.
table Speed Control Handle clockwise as far as it will go. Move the
Cross Feed Direction lever to the middle or "neutral" position and
turn the Cross Feed Increment Knob counter-clockwise to zero. Turn
the Wheel Feed Handwheel clockwise to raise the wheel enough to clear
any work that is on the table.
the mid-point along the ways. Clamp each table dog about four inches
on either side of the table reversing
Pump Drive Start Button.
there should be no movement of any components.
outward as far as it will go. (Did you disengage the table handwheel?)
Turn the Speed control Handle counterclockwise to bring the table up
to full speed.
lever and move the table dogs out to the end of the work table. Start
the table traversing
Feed Dial to produce desired cross-feed, as noted on the graduated
cross-feed handwheel, and move the Cross-Feed Direction lever in
the direction you want the table to move. The cross-feed will stop at
the end of the saddle traverse and must be reversed manually.
Push the Table Start-Stop lever "in
Traverse the table by hand so it is at
lever.
Now, push the Wheel Drive Start Button.
If
each of the previous steps has been taken,
Start the table traversing by pulling the Start-Stop
Stop the machine, now, by "pushing in" the Start-Stop
again.
While the table is moving, set the Cross-
11 and turn the
is a
Next, push the
lever
design
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During this preliminary period, experiment with the controls
and familiarize yourself with their function.
TRUING THE GRINDING WHEEL
If a magnetic chuck is used, the diamond holder can be held
on the face of the chuck. If no chuck is used, the diamond holder can be
clamped to the table surface by means of a bolt in the tee slot of the
table.
left portion of the table.
center of the wheel spindle.
the diamond lightly.
passes beyond the edge of the wheel and then feed down about 0. 0005" and
feed the diamond back across the wheel until it clears the opposite edge.
Repeat this procedure with appropriate down feeding until, by the sound of
the wheel in contact with the diamond, it is certain that the entire face of
the wheel has been dressed to the condition required.
It is
good grinding practice to locate the diamond holder on the
Move the table until the diamond is under the
Then lower the grinding wheel until it touches
Cross feed the saddle by hand until the diamond
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If a roughing operation is to be performed, a comparatively
fast traverse of the diamond across the wheel face is used. A fine
finish requires a slower traverse. For a finer finish, the diamond
should be moved slowly across the wheel face without any downfeed
of the wheel during the last several passes.
GRINDING THE WORK
Before beginning to grind, set the table dogs for a given
table speed so that the table will reverse at least 3/4" beyond each
end of the work. Refer to Table Dog Setting on page 6.
With the cross feed Start-Stop lever in neutral and the
wheel clearing the work, move the table and allow the edge of the work
to pass beneath the revolving wheel. With one edge of the work under
the wheel, feed down until sparks show. Then move work away from
wheel. Set appropriate vertical and cross feeds. Turn on the coolant
(if the machine is arranged for wet grinding) and throw the cross feed
lever in or out to feed the work across the wheel and pull out the table
Start-Stop lever to start the operation.
After the full width of the piece has passed under and clear
of the wheel, feed the wheel down. Continue feeding the wheel in this
manner and reversing the direction of cross feed until the work has been
ground to size.
To stop the table ALWAYS allow the wheel to pass off the
work, and then push in the table Start-Stop lever.
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The table can be stopped rapidly with the table start-stop
lever. To prevent table coasting at high speeds, stop the table directly
after a reversal is initiated. Oil in the table cylinder will then cause a
quick stop.
Some operators will like to control table Start-Stopping with
the speed control lever. This is not as fast in most cases, but will not
hurt the machine.
It may be necessary to have the table dog pass beyond the
table reverse lever. This is done by firmly holding the table reverse
lever handle in the direction the table is moving and allowing the table
dog to deflect the spring actuated tip of the table reverse lever. Stop
table before it reaches end of stroke.
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ATTACHMENTS
Wet and Dry Grinding
If the S-3 is equipped for wet grinding,
grinding compound with water in the 20 gallon tank. Supplier
instructions
equipped for dry grinding, attach the dust hood to the wheel guard and
connect the hood of either the central or individual exhaust system.
Coolant through Grinding Wheel
slide.
two valves on the coolant line leading from the tank to the front cover
of the wheel guard.
to flow ONLY when the wheel motor is running; otherwise, fluid could
enter the wheel when stopped and cause a dangerous
the wheel is started. A second valve, with sight glass, is for manual
metering of the coolant by the operator.
adapter to the wheel. A WHEEL MUST BE USED WHICH DOES NOT
HAVE A METAL OR PLASTIC BUSHING.
High Speed Grinding Attachment
A
will give the correct proportions.
A special coolant tank is mounted on top of the vertical
sight glass in the tank shows the coolant level.
The electrically controlled valve permits fluid
The coolant passes through a special sleeve and special
mix a quantity of
If the machine is
There are
unbalance when
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The high speed grinding attachment
spindle carried by a supporting
spindle housing,
Changing from regular surface grinding to use of the high speed attach
ment requires only a few minutes.
and sleeve, and mount the supporting
main spindle; mount the sleeve holding the special flat belt pulley to
the spindle. Insert the quill, wheel, and put the protective
in place.
Radius and Tangent Angle Wheel Dresser
will be supplied with the dresser.
Power Wheelhead Positioning Mechanism
1/4 h. p. A. C. motor mounted on the vertical wheel slide.
turns the vertical feed screw by means of chain driven bevel gears.
This arrangement
as to new machines. The operating lever for rapid power positioning of
and is driven from the regular spindle by a flat belt.
Complete instructions
Fast, fatigue-free
may be applied easily to machines in the field as well
bracket attached to the front of the
Remove the regular grinding wheel
bracket over the housing of the
for use of this optional attachment
wheel head movement
consists of a ball bearing
belt guard
is
obtained by a
The motor
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the wheel is located on the right side of the base. The wheelhead will
move
pressed down. The speed is nine inches per minute,
power-vertical feed to bring the wheel against the work.
HYDRAULIC SYSTEM
The pump, direct driven by its own electric motor through a flexible
coupling, draws oil from the reservoir in the base, which has a
capacity of about 15 gallons. Oil is poured directly into the base
through the front. The proper oil level can be checked by referring
to the sight gage in the lower right hand corner of the base.
175 at 100°F. ) be used in the hydraulic system, and that this oil have
oily additives for ways lubrication and inhibitors for rust, foam, and
oxidation.
suspension frame and turns in a counter-clockwise direction. The
pressure line from the pump enters the left end of the manifold block,
located below the entrance to the reservoir. Two pressure lines go
from the back of the manifold; the left hand one to the table control valve,
the right hand one to the cross-feed control valve.
upwards when the lever is held up; down, when the lever is
NEVER use the
CONSTRUCTION AND SERVICING
A diagram of the hydraulic system is shown in figure 3.
We recommend that highly refined oil (S. U. V. 145 to
The pump and motor unit is mounted in the base on a spring
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Pressure Adjustment
Pressure adjustment is made by setting the relief valve:
Remove the cap and loosen the check nut on the bronze screw; screw "in"
the bronze screw to increase pressure, screw "out" to decrease
pressure. The proper hydraulic pressure is 125 psi. A pressure gage
may be inserted on the manifold by removing the set screw on top of the
manifold.
Each hose is fitted with a union, accessible from the front
of the machine.
unit is removed from the machine.
Removal of Pump Motor
pending springs are disengaged. On replacing the unit, extreme care
should be taken that the hoses are refastened without taking a twist. The
hose fitting should be tightened in place first, after which the union should
be tightened.
as this will either loosen the joint or cause the hose to break under the
pulsation of the hydraulic pump. Both halves of the flexible coupling between
Each union is to be disconnected when the motor-pump
The motor may then be pulled forward and out as the sus
In setting up the union, be sure that the hose does not twist,
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the pump and motor should be kept tight on their respective shafts and
pressed tightly together. Looseness of these flanges will cause rapid
destruction of the coupling disc.
TABLE CONTROL VALVE
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The table control valve consists of the table start-stop and
speed control valve and the table reversing valve.
The table start-stop and speed control valve consists of a
single spool which, when pushed inward, stops the table by blocking
the table exhaust and allowing the oil under pressure to pass directly
to the reservoir.
directed to the reversing valve and the table exhaust is unblocked.
The table speed is controlled by turning this spool, thereby changing
the size of the aperture through which the table exhaust passes.
spool which is connected to the table reversing lever and provides pilot
pressure to either end of the reversing spool (and to the spool in the
cross-feed control valve). The reversing spool directs the pressure
to and exhaust from the table cylinder, and its movement is relatively
slow to provide smooth table reversals.
HAND TABLE TRAVERSE AND TABLE
in ball bearings and on which is a pinion meshing with a rack under
the table.
wheel, allowing it to remain at rest while the table is traversed by
power.
This unit is made so an outward pull disengages the hand-
When the spool is pulled outward, pressure is
The table reversing valve has two spools. One is a pilot
The hand table traverse unit consists of a shaft mounted
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A safety interlocking pin between the handwheel shaft and
the table stop-start lever shaft makes it necessary to disengage the
handwheel before the start-stop lever can be pulled out to start the
machine.
The hand table traverse unit is removed by disconnecting
the cap directly back of the handwheel and pulling out the shaft, pinion,
and assembled ball bearings.
The table may be lifted from the machine by unclamping
the latches at either end of the table which hold the ends of the table
piston rods.
desired,
However, this is not absolutely necessary since the resistance of the
hydraulic oil, when the cross-feed handle is in the neutral position, is
very slight.
The table may be disconnected from the piston rod, if
when hand operating the machine for a long period of time.
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CROSS FEED
The impulse for the increment of cross-feed comes from
the cross-feed piston and transmitted through the rack on the piston
rod. At each table reversal, pilot pressure from the pilot spool of
the table control valve moves the cross-feed spool. As this spool moves
pressure is allowed to pass through to the cross-feed cylinder, moving
the piston against a spring. When the cross-feed spool completes its travel,
the pressure to the piston is blocked and exhaust takes place, and the
piston is allowed to reposition through the action of the spring. A one
way clutch on the gear on the pinion shaft does not allow the repositioning
of the piston and rack to move the cross-feed screw.
The direction of cross-feed is obtained by moving the cross
feed lever. The lever, in turn, moves a sliding gear keyed to the cross
feed shaft. In one position, the sliding gear engages the gear on a shaft
to which is keyed the pinion for the rack on the cross-feed piston rod. In
a second position, the sliding gear is disengaged from any gear (neutral
for hand movement). In a third position, the sliding gear engages an idler
driven by the gear, on the pinion shaft, already mentioned, thereby
turning the cross-feed screw in the opposite direction.
Amount of automatic cross-feed at table reversal is determined
by the length of stroke of the cross-feed piston. The length of stroke is
adjusted by a stop at the rear uf the piston. This stop is adjusted by the cross
feed knob on the right end of the front apron.
1
1
1
1
■
1
1
1
The cross feed saddle rests on two flat ways of the cross
slide. The movement of the saddle is guided by a hardened tool steel
rail bolted to the underside of the cross slide at the center. The guide
rail runs through antifriction bearing, hardened tool steel rollers that
are bolted to the machine base. No oil clearance is allowed between the
guide rail and rollers. The cross-feed of the saddle is controlled by the
action of a feed screw and half nut for hand and hydraulic movement.
The roller alignment is critical since it affects the mating of
the feed screw and half nut. With normal grinding conditions and proper care,
however, the alignment of the rollers as set at our factory will remain
indefinitely.
VERTICAL SLIDE
The vertical slide has three gibs that can be used to compen
sate for wear, two holding gibs and one tracking gib. The adjusting
screws are along the vertical ways and are accessible when the vertical
slide is run up to its highest position.
1
T*
1
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1
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Page 18
I
13.
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Gib Adjustment
The gib is adjusted by backing off the retaining nuts and taking
up on the set screws. Frequent adjustments are not necessary.
strongly recommend that you call for an experienced Norton Serviceman
to make adjustments when they are necessary because the take-up of the
gibs must be "just right" to avoid binding.
WHEEL SPINDLE
The wheel spindle is an antifriction bearing type. It is
sealed for protection from contaminating
lubricated to last the life of the spindle.
2, 750 r. p. m.
The spindle cartridge
set screws in the underside of the housing.
established by aligning the spindle pulley with the drive motor pulley.
To remove the spindle cartridge
remove the wheel sleeve, and draw the cartridge out of the spindle
housing from the rear of the machine. Reverse the procedure
installing a new spindle. Be sure the flats in the cartridge
the bottom so the set screws will bear against them.
are in line, tighten the set screws to hold the cartridge in position.
Tighten these set screws carefully in order not to distort the spindle
housing.
straight edge before tightening the set screws. Always use a wheel
puller to remove the wheel mount and the drive from the spindle.
Hammering them off will shorten the life of the bearings.
Align the spindle drive pulley and the motor pulley by using a
is
elements. It has
It is
secured in the spindle housing by two
built to operate at
The lateral position is
loosen the two set screws,
When the pulleys
We
.been
pre
when
case are at
I
Do not attempt to repair these spindles.
to the original manufacturer or to Norton Company.
units and require specialized equipment and facilities for servicing.
not disassemble them any more than necessary to remove them from the
machine.
An antifriction, integral motor, cartridge type spindle is
also offered for this machine. This spindle operates at 3, 600 r. p. m.
with 60 cycle current and 3, 000 r. p. m. with 50 cycle current. The
instructions
integral motor type.
WHEEL DRIVE BELTS
belt or vee belt drive.
belt.
The belt pulleys should be carefully aligned since any misalignment
will cause the belt to stretch on one side, thereby reducing its life.
above for the antifriction
The Type S-3 Surface Grinder is available with either flat
Care should be exercised when installing a flat
bearing type spindle apply to the
Return them either
They are precision
Do
l
Page 19
14.
n
Special attention should be paid to belt tension.
the pulleys for a few minutes to distribute the tension evenly
run
throughout the belt. The proper tension should be just enough so the
belt will run without flapping. A belt properly aligned and under the
correct tension will last almost indefinitely. The belt is elastic and
resistant to the effects of lubricants. No belt dressing of any type
should be used. The slightly tacky surface of the belt is the source of
its driving ability.
While the installation of the vee type drive belt is not so
critical as the flat belt, improper installation will materially reduce
the life expectancy. Align the belt sheaves carefully. Always use a
straight edge. Do not tighten the spindle cartridge in the housing until
the sheaves are in line. The vee belt depends on the pinching action of
the sheave on the belt for driving.
not be tight, but should have approximately 1/2" of slack at the mid
point between the sheaves.
For this reason, the belt should
With the belt in place,
%
%
1
1
1
1
1
Should any problem with this surface grinder arise, read
this booklet carefully and in the majority of cases the remedy will be
found herein. For instance, should the table refuse to start, the
operator will first assure himself that the hydraulic pump motor is
running. If it is not, trouble should be looked for in the motor itself,
its wiring or starting switch. If the motor is running, trouble should
be sought in the hydraulic line in the shape of a broken hose or loose
connection.
Using this method of tracking down trouble, the average
mechanic can run and maintain the surface grinder with perfect
assurance. If, however, a difficulty arises that does not respond to
this treatment, a
office or one of its several branch offices will bring assistance. We
request that the machine owner or operator give us full information
such as the serial number of the machine, when it was purchased and
full particulars on the nature of the trouble. Frequently, it is found
that difficulties may be settled by correspondence or over the telephone
if the machine man is explicit in his description of his problem.
letter,
wire or phone call to the Company’s home
1
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Page 20
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15.
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CENTER GUIDE ROLLS
This machine has a center guide bar attached to the underside
of the saddle. This guide bar runs between four center guide rolls for
maintaining accuracy of saddle motion. The construction is shown by the
drawing on the drawing on the following page.
As is indicated by this drawing, one of these rolls is concentric
or "fixed. " This is the left rear roll, when facing the machine.
three rolls are mounted on an eccentric as indicated by the marking on the
drawing.
At factory assembly of the machine, the left front guide roll is
carefully lined with the "fixed" guide roll. The saddle is placed on the
machine with the guide bar firmly in contact with the left-hand rolls, then
by manipulation of their eccentric mountings, the two right-hand rolls are
brought into firm - but not binding contact - with the guide bar.
Saddle cross motion is then checked, and if necessary,
corrected by adjustment of the right-hand rolls. Examination of the
machine will show that the adjusting studs for the two front guide rolls
are very close to the base opening.
(eccentrically mounted) guide roll can be felt farther back.
The adjusting stud for the right rear
The other
is
a
a
a
a
a
a
a
a
It will also be evident that the adjusting studs are locked by hex
nuts.
Removing the Saddle
be sure to first back off the right-hand guide rolls. Do not touch the left
front guide roll on receipt of the machine or when removing the table.
the adjustment of the left front stud has been disturbed during shipment;
(2) if after a period of service the sliding table is known to be operating
"out of square" with the center-line of the grinding wheel spindle.
the two front guide rolls, but normally, it will be found that most required
adjustment can be made with the two right-hand guide rolls only.
The adjusting studs are turned by a socket set screw.
When it becomes necessary to remove the saddle for any reason,
The two exceptions to this might be (1) when it is suspected that
In this case it may be found necessary to make adjustment of
a
I
Page 21
16
' I
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S3-378 Center
,-53-376 Eccentric (3)
Guide Bar
O
1
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VI
SE-3433-B
CENTER
GUIDE
ROLLS
V
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1
5
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Page 22
TABLE START-STOP
6- SPEED CONTROL
VALVE
CHECK
VALVE
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TABLE START
STOP LEVER
TABLE SPEED
CONTROL HANDLE
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NEEDLE VALVE TO CONTROL
SHUTTLE SPEED. TO CONTROL
CROSS FEED INCREMENT.
SUPPLY PRESSURE
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HYDRAULIC SYSTEM
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Page 23
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19.
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Page
21
23
23
23
25
27
28
INDEX OF PARTS
Drawings for 6" S-3
Surface Grinder
Vertical
Feed
Table Reverse Lever
Table Dogs
Hand Table Traverse
Automatic Cross Feed
and Screw 1
Automatic Cross Feed
and Screw 2
Table Cylinder
Wheel
6S3 Catalogue Numbers
Code 100-127
Code 130-162
Code 165-196
Code 200-213
Code 215-222
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29
30
31
23
Please specify catalogue Part number and Name together with
the machine Serial number on every inquiry or order.
Table Control
Valve
Wheel Spindles
Antifriction
Hydraulic
Cross Feed Shuttle Valve
Reverse Lever Detent
Pump Parts &
Code 230-252
Code 255-260
Code 265-275
Code 280-284
P
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Page 24
S3-117
6S3-II8
6S3-II9
6S3-II4
6S3-II5
-6S3-II6
CO
o
SE-332I-A
SE-3322-A
6S3-I20
6S3-I2I
VERTICAL WHEEL FEED
RAND
• c •&
Page 25
SE-3321-A
SE-3322-A
Code 100-127
Vertical Wheel Feed
Code No.
6S3-100
6S3-101
6S3-102
6S3-103
6S3-104
6S3-105
6S3-106
6S3-107
6S3-108
6S3-109
6S3-110
6S3-111
Part Name
Down Feed Knob
Handwheel
Handle
Bushing
Idler Stud
Torrington
B
Ring
Idler Gear
Sun Gear Housing
Ball Bearing
Handwheel Shaft
Bearing Sleeve
Ball Bearing
Code No.
6S3-116
6S3-117
6S3-118
6S3-119
6S3-120
6S3-121
6S3-122
6S3-123
6S3-124
Part Name
Clipper Seal Type
LA Style Hl/25
Ball Bearing
Retainer
Vertical Feed Screw
Feed Screw Shield
Cap
Feed Screw Shield
(upper)
Elevating Nut
Vertical Feed
Nut Bracket
Washer
7/8 x 2j Hex.
cap. scr.
6S3-112
6S3-113
6S3-114
6S3-115
Pinion
Wheel Feed Housing
Gear
Ball Bearing
6S3-125
6S3-126
6S3-127
Housing cover
Pointer
Feed Screw Shield
(lower)
to
Page 26
6S3-I60
1
to
to
-6S3-I58
-6S3-I57
6S3-I56
6S3-I54
HAND TABLE TRAVERSE
6S3-I43
6S3-I44^>
___
6S3-283
Page 27
SE-3323-A
SE-3324-A
Code 130-162
Table Reverse Lever
Code No.
6S3-130
6S3-131
6S3-132
6S3-133
6S3-134
6S3-135
6S3-136
6S3-137
6S3-138
6S3-148
6S3-149
6S3-150
Part Name
Collar
Knob (Black)
Knob Stud
Lever
(2)
Spring (2)
Spring Pin (short)
Spring Pin (long)
Spring
Hood
Lever
(LH)
Dog (LH)
Tee Bolt (LH)
Code No.
6S3-139
6S3-140
6S3-141
6S3-142
6S3-143
6S3-144
6S3-145
6S3-146
6S3-147
Table Dogs
6S3-151
6S3-152
6S3-153
Hand Table Traverse
Part Name
Shaft
Key
Torrington
Needle Bearing
Housing
Torrington
Needle Bearing
Lever and Detent Cam
Soc. set Scr.
Link (2)
Pin
Lever (RH)
Dog (RH)
Tee Bolt (RH)
6S3-154
6S3-155
6S3-156
6S3-157
6S3-158
6S3-280
6S3-281
6S3-282
Handwheel
3QA Handle
Bearing Cap
Ball Bearing
Interlock Collar
Pin
Detent Block
Spring
6S3-159
6S3-160
6S3-161
6S3-162
Reverse Lever Detent
6S3-283
6S3-284
Rack Pinion Shaft
Ball Bearing
Table Rack
Tru-Arc
Snap Ring
Detent Plunger
Roll
to
co
Page 28
6S3-I82^
CO
6S3-I79
6S3-I67
'
SE-3 3 26-A
SE-3327-A
•T
6S3-I84
AUTOMATIC CROSS FEED 5 SCREW 1
RAND
, AT
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Page 29
SE-3326-A
SE-3327-A
Code 165-196
Code No.
6S3-165
6S3-166
6S3-167
6S3-168
6S3-169
6S3-170
6S3-171
6S3-172
6S3-173
Part Name
Handwheel
QA. Handle
Cover
Sliding Gear
Feed Screw Sleeve
Bearing Cap
Ball Bearing
Screw
Feed Screw Key
Automatic Cross Feed
and Screw (I)
Code No.
6S3-181
6S3-182
6S3-183
6S3-184
6S3-185
6S3-186
6S3-187
6S3-188
6S3-189
Part Name
Pin
Stop
Screw
Stop Button
Idler Gear
Bushing
Idler Gear Stud
Gear
Oilite Bushing
Clutch Sleeve
6S3-174
6S3-175
6S3-176
6S3-177
6S3-178
6S3-179
6S3-180
Ball Bearing
Truarc Snap
Half Nut
Ball
Knob Stud
Reverse Lever Shaft
Shift Lever
6S3-190
6S3-191
6S3-192
6S3-193
6S3-194
6S3-195
6S3-196
Spring (3)
Torrington
Roller
Rack Pinion
Oilite Bushing
Clutch Stud
Cross Slide
Pointer
(3)
to
CP
Page 30
6S3-2I2
6S3-2II
to
CD
SE-3328-A
SE-3329-A
^~6S3-203
AUTOMATIC CROSS FEED 5 SCREW 2
6S3-2IO
6S3-208
/PA NO
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Page 31
I
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SE-3328-A
SE-3329-A
Code No.
6S3-200
6S3-201
6S3-202
6S3-203
6S3-204
Part Name
Knob
Oilite Bushing
Spring
Locking Segment
Locking* Gear
Automatic
Cross Feed
and Screw (II)
6" S-3
Code No.
6S3-207
6S3-208
6S3-209
6S3-210
6S3-211
Code 200-213
Part Name
Sleeve Cap
Adjustment Rack
Adjustment Sleeve
Piston
Spring
6S3-205
6S3-206
Pinion Shaft
Oilite Bushing
6S3-212
6S3-213
Spring
Hydraulic Cylinder
to
Page 32
to
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Piston
\
\
\
and. Rod
Cyllnder
\
6S3-2I5 Cylinder
s
• '
(2) 6S3-2I9
o
6S3-217__
Head.
\
\
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"O" Ring
\
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(2I6S3-2I8^
SE-3330-A
SE-3331 -A
Oil Seal
(6! 6S3-220
Cap
(21 6S3-22I__-
Oil
I
TABLE CYLINDER
rand
Page 33
i
6S3-238 O* Ring
/
6S3-230 Cap
6S3-23I "o'Rings
6S3-232 "O' Ring.
6S3-233 Spring
Pin
6S3-234 Spring Pin.
6S3-235 Spring
6S3-236 Lever-
6S3-237 Knob
6S3-239 Body
(Upper)
6S3-240 Sleeve
-241 "o" Ring
.6S3-24 2 Pls-ton
m
. \ v
(70,
6S3-243 Cap
SE-3932-A
6E-3333-A
6S3-248 "O Ring
6S3-249 Control
6S3-244 "d Ring
6S3-245 Body
6S3-246 "O' Ring
6S3-247 Stop
Screw
6S3-250 Pilot Plstonl
Piston
TABLE CONTROL VALVE
(Lower)
6S3-25I Oil
Seal
6S3-252 Valve Link
KANO
CO
CO
Page 34
8
6S3-257 Spindle
6S3-258 Wheel
SpindLle.
6S3-255 Spindle
6S3-256 Fla-t
PuUy
__
Belt
Sheave
BELT DRIVEN
SE-333A-A
SE" 3333-
■i
6S3-260 Wheel
MOTOR DRIVEN
Spindle-Integral
Mo-tor
WHEEL SPINDLES
A
n
A
(ANTIFRICTION BEARINGS)
HAND
Page 35
■ \
6S3-265 Spring HooK CO
6S3-269 Coupling
6S3-266 Extension Hook
6S3-267 Spring
CO
CO
6S3-270 Pump
Motor
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Q-
0
Bas^
6S3-272 End
6S3-273 "o" Ring
6S3-274 Piston
i
;
Cap
(21
6S3-275 Valve
(2)
Body.
9
0
$
SE-3336-A
St-333 7-A
6S3-27I Pump
HYDRAULIC PUMP PARTS
CROSS FEED SHUTTLE
VALVE
/?A NO
CO
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