This manual has been specifically written for the SHARP 1118H precision tool room
lathe.
This manual will help you obtain the best results and accuracy from the lathe.
In order to provide the best possible product we are continuously conducting research and
development to improve our prod uct, therefore improvements in desig n and
specifications may change at any time without notice.
This manual applies only to the machine with which it is issued.
The serial number of your machine is:______________
1
INSTALLATION
1. Foundation:
In order to achieve the accuracy from the 1118H TOOLROOM LATHE, it is
essential that the machine be installed on a solid concrete base t o eliminate any
possible vibration and be properly leveled. Should the machine be used free-standing
it is important to check regularly to be sure the machine is level
2. Lifting the machine:
The gross weight of the lathe is approxim ately 830kgs. This should be taken into
consideration when choosing the equipment for lifting the lathe.
It is recommended that the machine be lifted using a rope or cable placed ar o u nd the
bedpan as shown in Fig. A. The carriage s h ould be moved towards the tailstock for
balance and padding put between the edges of the ma chine and the rope or cable.
2
3. Cleaning:
Each lathe is coated with a rust proofing grease prior to shipping. This grease should
be removed with white spirit or kerosen e before moving the cross slide, carriage or
tailstock. DO NOT USE CELLULOSE SOLVENTS FOR CLEANING AS IT WILL
DAMAGE THE PAINT.
When cleaning, pay particular attention to the slides and spindle nose. It is important
that the end guard is removed. After cleani ng, all parts should be dried with a soft
cloth and coated with a thin film of oil .
4. Leveling: Fig. 2
After the lathe is placed on its foundation it must be properly leveled. There are six
adjustable feet located under the corners of the pedestal base.
a. Place one pad under each of the feet
b. Loosen the setscrew “A” and use a pinwrench to raise or lower each foot as
appropriate for leveling.
c. Be sure all feet resting firmly on the pads.
d. When leveling is completed, tighten setscrews “A” and recheck the lathe to be
sure it is still level.
Figure 1Lifting Machine
Figure 1 Lifting Machine
Figure 2 foundation
3
A
C
5. INSPECTION:
When you take delivery of the lathe, be sure to check for any possible damage caused
by shock or vibration during tr a nsportation. Also check to be sure tha t all pa rts, tools
and accessories are with the lathe.
6. LUBRICATION:
Once the lathe is in place, leveled and ready for use, proper lubrication is critica l.
Please follow the recommended daily, weekly and monthly lu brication instructions.
a. Vertical Screw:
Lubricate the vertical screw “C” via grease fitting “A” (Fig. 4) monthly or as
needed. Add a few drops of light oil in the vertical screw “C” (Fig.4) and the
brake cor k “B” (Fig. 5).
Figure 4 Vertical Screw Figure 5 Brake Assembly
4
Q
b. Carriage Lubrication:
Fill the reservoir with Mobil Vactra Oil No. 2 or its equivalent. Maintain oil level
in sight window “P” (Fig) 6.
c. Gear Box and Clutch Lubrication:
Maintain oil level in sight window “S ” (F ig. 7). Carriage gearbox can be filled
by removing plug “R” (Fig. 7). Use automatic transmission fluid Mobil 20 0
(Esso ATF or its equivalent). Oil should be changed every 400 hrs. The oil drain
Plug “T” is located under the carriage gearbox (Fig. 7).
CAUTION: Use of any other type of oil in t he ge a r b ox may result in damage to the
Clutch surfaces.
d. Headstock Lubrication:
To absorb the radial and axial forces, the headstock spindle has precision
Preloaded angular contact ball bearings. These bearings a re packed with grease
for the life of the bearing a nd require no further lubrication.
7. ELECTRICAL CONNECT IONS;
The 1118H is shipped completely wired. To connect the power, do the following:
a. Turn the main switch “A” (Fig. 8) to “off” or “O”.
b. Check the voltage required which is indicated on the label at the rear of the
electrical panel.
c. Loosen screws “B” (Fig.8) to gain access to the electrical connections.
d. Connect the power source to the terminals identified as, R.S.T. and the ground
“G” in the electrical p anel (Fig. 9).
e. To check for proper rotation, place control lever “H” (Fig. 11) to the “LOW”
position, pull out spindle locking pin “E” (Fig. 11) and turn “C” (Fig.10) to the
forward position. The spindle rota tion is counter clockwise when view e d from the
supply and interchange any two leads of the R.S.T. connections and re-connect
the power. The rotation should now be correct.
CAUTION: Running the lathe in the wrong direction will result in damage to the
The 1118H has a high and low speed range, that is activated by moving lever “H”
(Fig. 11) to the high or low posit ion. To change speeds move lever “H” to high or low,
push the start button “B” (Fig. 10) and turn knob “C” (Fig. 10) to the forward or
reverse position. You can now change the speed by moving knob “D” (Fig. 10) to the
right to increase speed or left to reduce speed. The speed is indicated on the sight
window.
9. FREE SPINDLE
To free up the spindle so it can be turned by hand, move lever “H” (Fig.11) to the
stop position, turn knob “C” (Fig. 10) to the brake off position. At this point the spindle
will rotate by hand. To have the spindle rotate more freely you can run the machine
momentarily at 1200 RPM.
DC
R,S,T
B
Figure 9 Electrical Panel Figure 10 Spindle Speed
Indicator
E
F
H
Figure 11 Spindle Speed Control Levers
6
10. QUICK CHANGE GEAR BOX:
K
For conventional machining feed rate knob “I” (Fig.12) is turned to the right and to
the left for threading. Settings for threading and feed rates are located on chart “J”
(Fig.) 12. When selecting feed rate or TPI gear change arm “K” and speed change
knob “L” (Fig. 13) must be moved to the proper settings for the desired feed rate or
thread. Threads up to 250 TPI are available though the gear box ant the use of the
outside change gears. (5 change gear assembly).
CAUTION: DO NOT SHIFT GEARS WHEN THE LATHE IS RUNNING.
11. AUTO THREAD LENGTH CONTROL:
Left and right hand threads are controlled by lever “F” (Fig. 11). This lever is
connected to the control bar “M” (Fig. 14). When the carriage contacts the adjusting
screw "O” (Fig. 14) it will move the control lev er “F” (Fig.11) to the stop position.
This function when used in conjunction with the QUICK ACTING TOOL POST
COOMPOUND SLIDE ASSEMBLY described on page 11 will allow threading into
a blind hole or against a shoulder without a thread relief.
J I
L
OM P N
Figure 12 Quick Change Figure 13 Quick Change Figure 14 Thread
Gear Box I Gear Box II Length Control
7
12. SPINDLE BRAKE:
The brake has been designed to stop the spindle quickly when lever “H” (Fig. 11) is
in the “BRAKE” position. The brake is actuated when the brake cork “B” (Fig. 16) is
forced against the brake drum (Fig.16) by spring tension and is release by a solenoid.
NOTE: TO PROLONG THE LIFE OF THE BRAKE, A FEW DROPS OF
SPINDLE OIL SHOULD BE APPLIED TO THE BRAKE CORK.
13. BRAKE ADJUSTMENT:
1. Loosen hex nut and setscrew “E” (Fig. 16).
2. Run the spindle at 1500 RPM.
3. While the lathe is running, turn the adjusting screw “A” on the brake solenoid
(Fig. 16) clockwise until the brake cork contacts the drum.
4. Then turn counter clockwise until the noise disappears. The brake is now
properly adjusted. (At 1500 RPM the brake should stop the spindle in
approximately 3 seconds).
NOTE: THE CLEARANCE BETWEEN THE BRAKE CORK AND THE DRUM IS O.25mm TO 0.33mm.
14. BRAKE REPLACEMENT:
1. Disconnect wires 25 and 26 (Fig. 17) from the terminal strip and remove conduit
(C) (Fig. 15).
2. Remove bolts “S” (Fig. 16) and remove brake unit.
3. Loosen hex nut and setscrew “E” (Fig. 16).
4. Remove adjusting screw “A” (Fig. 16). Using a pin punch through the adjusting
2. Move switch “C” (Fig. 10) to the “STOP” position and let the spindle coast to a
stop. (This is done to equalize the belt tension).
3. Move lever “H” (Fig.11) to the “HIGH” or “LOW”.
4. Loosen lock nut “N” (Fig. 15) and adjust w ith adjusting screw “F” (Fig. 15).
(Clockwise tightens the belts).
5. Stop the lathe and check the belt tension. (There should be approxim a tely 1” of
play in the belts. If tension is satisfactory re-tighten lock nut “N” (Fig. 15).
16. COLLET CLOSER REMOVAL:
To avoid damage to the collet closer when using chucks, face pate s or other nose
type fixtures the unit should be removed from the machine. The unit should also be
removed periodically for clea nin g to prevent the loading of chips be twe en the collet
tube, the inside of the spindle and the collet threads.
To remove the collet closer:
1. Remove pin “P” (Fig. 18). (Pin is finger tight and no tool is required).
2. Slide unit straight out of the back of the sp indle. Do not turn the adjusting nut
“Q” (Fig. 19) or any other screws. They are set at the factory.
17. REPLACING THE COLLET CLOSER:
1. Make sure the inside of the headstock spindle and outside diameter at the rear of
the spindle is clean.
2. Apply a film of light oil on the inside of adjustin g nut “Q” (Fig. 19).
3. Clean collet tube inside and out, a p pl y a film of light oil and slide into the end of
the spindle. Do not force it.
P
4. Replace pin “P” (Fig. 18).
L Q R
Figure 18 Collet Closer Figure 19 Collet Closer
A
9
18. COLLET CLOSER ADJUSTMENT:
1. Clean inside of spindle nose and the collet.
2. Push in lock pin “E” (Fig. 11). (To engage lock pin, turn spindle until pin lines up
with the notch.
3. Disengage Adjusting Finger “L” (Fig. 19).
4. Place collet in the tube making sure the slot in the collet lines up with the pin in
the spindle.
5. Apply light pressure to collet while turn ing Shell Guard “U” (Fig. 18) making
sure the threads engage. Do not use force. If the collet does not go in smoothly,
check for burs or damaged threads.
6. Insert workpiece in the collet, move lev er “A” (Fig. 18) to the left or closed
position and turn shell guard “U” (Fig. 18) toward the operator until the collet
seats.
7. Move lever “A” (Fig. 18) to the right or release d p os i tion and turn shell guard
“U” (Fig. 18) two notches toward the operato r o n the a dj us ting finger “L”.
8. Move lever “A” (Fig. 18) to the left or closed position and test the workpiece for
correct tightness, if not correct, make any adjustments needed and lock the
adjusting finger “L”.
19. CARRIAGE INDICATING RING:
For convenience the handwheel dial “D” (Fig. 20) is graduated in both inch and
metric increments. (Increments are .001” and 0.02mm. The dial is spring loaded to
simplify moving to a desired position.
20. CARRIAGE LOCK:
To lock the carriage, turn handle “H” (fig. 20) clockwise, (Toward the operator) to
unlock turn counter clockwise (Away from the operator).
21. CARRIAGE CLUTCHES:
To prevent damage to the machine the carriage clutches are designed to slip when
the slide or carriage comes in contact with a feed stop. The clutches are a spring loaded arrangement and made of a friction type material. The clutches are set for
maximum torque and are not adjustable. Slippage during machining is usually an
indication of a dull tool, improper or excessive feed rate.
B
D
R
Figure 20 Carriage Figure 21 Carriage
H
10
22. CROSS SLIDE INDICATING RING:
For convenience the indicating ring “B” (Fig. 20) on t he cr oss slide is graduated in
both inch and metric increments. (Increments are .001” and 0.02mm). The dial is
spring loaded to simplify moving to a desired location. Type ad operation of the
clutches are the same as the carriage. To use the taper attachment (if installed) nut
“N” (Fig. 22) must be loosened.
23 QUICK ACTION TOOL POST COMPOUND SLIDE ASSEMBLY:
The compound is equipped with a quick action slide assembly, when used in
conjunction with the auto thread le n gth control described on page 7 will allow cut ting
threads into a blind hole or against a shoulder. Handle “K” (Fig. 23) is used to operate
the quick action slide assembly. When making a cut for threads the handle is in the
forward position and moved back toward the operator at the end of the thread. Feed
for the thread depth is similar to a convention al lathe. The compound dial “J” (Fig 23)
Is graduated in .001” and 0.02mm increments and is sprin g loa de d to simplify moving
to desired location.
23. POWER FEED UNIT:
The carriage power feed unit is mounted on the carriage and is powered by a direct
current motor. (See Fig. 23).
The power feed can only be operated when the machine is running. To start t he power
feed turn cam switch “A” (Fig. 24) to the desired position. (This switch has three
positions to control the direction of travel, “STOP” “LEFT” and “RIGHT”). The feed
knob “B” (Fig. 24) controls the feed rate for both the carriage and the cross slide.
N
K
J
DC Motor
Figure 22 Compound Slide Figure 23 Compound Slide
Figure 24 Power Feed Unit
11
The feed rate should be pre-selected to suit each particular job depending on the type
of material being machined, diameter of material, type of cut and tooling being used.
Note: The numbers on the feed control do not represent thousandths per revolution
or inches per minute. It is recommended tha t test cuts be taken to determ ine the
proper feed rate and RPM for a particular job and the results recorded for future
reference.
25: COOLANT:
The coolant pump is controlled by Switch “C” (Fig. 25) and has three positions,
“ON” “OFF” and “AUTO” When in the on position the coolant is consta nt an d it th e
“AUTO” position the coolant is only on when the machine is running. The sump
should be cleaned on a regular basis.
26. TAILSTOCK ASSEMBLY:
Pre-loaded ball bearings have be e n i ns ta lle d t o support the load between the tai l stoc k
and the spindle. The tailstock spindle is graduated in both inches and metric. (1/8”
and 1mm increments). The total travel is 3 ¾” or 92.25mm. The dial ring “D”
(Fig.27) is spring loaded and graduated in both inch and metric. (0.001” and 0.02mm
increments).
27. TAILSTOCK SPINDLE LOCK:
To lock the tailstock spindle move lever “H” (Fig.28) toward the spindle and awa y
from the spindle to unlock.
C
28. TAILSTOCK LOCK:
The tailstock can be locked in place using lever “E” (Fig. 28). Lever “E” should be
adjusted between clamp stops “F” and “G” (Fig. 28) so that when fully clamped it
does not touch stop pin “F”.
CAUTION: DO NOT RUN THE SPINDLE IN REVERSE WHEN THREADING.
The Tool Room Lathe is designed to cut threads quickly and accurately. The quickchange gearbox permits instant selec tio n of up to 36 different English and Metric threads.
Threads can be cut to a shoulder by setting the automatic stop to a predetermined point in
either direction. Before cutting a thread, select the proper cutting speed for the size of the
thread and material to obtain the desired finish. MAXIMUM RECOOMMENDED
THREADING SPEED IS 1000 RPM.
To set the quick-change gearbox for a desired pitch, pull the spring loaded knob “A” (Fig.
29) out as far ass it will go and lower it until can be moved sideways to the desired notch
directly under the thread required. Raise the handle so the plunger can drop into the hole.
If the handle cannot be raised far enough for the plunger to drop into the hole, loosen
knob “F” (Fig.29), open the gearbox d oor and rotate gear “B” (Fig. 34) until the gears
mesh allowing the handle to be raised.
Set ENGLISH / METRIC knob “B” (Fi g. 29) so thread system to be cut is at t he top, if it
does no engage loosen knob “F” (Fig. 29) open gearbox door and rotate gear “B” (Fig.34)
until it engages. To engage gearbox turn knob “D” (Fig. 29) to the treading position. If
the sliding gear in the gearbox does n ot mesh with the headstock spindle gear it m ay be
necessary to turn the headst oc k s pindle by hand using the handwheel “ P ” (Fig. 31) until a
definite click is heard.
E G F H F C A B D E
Figure 28 Figure 29 Figure 30
Tailstock body & Headstock & gearbox Thread
Spindle Lock Length control
13
Set compound at 61º and position cutting tool in compound slide tool post. Position the
carriage so the tool is in the center of the part to be threaded.
Lever “F” (Fig. 11) is used to control direction of feed. When moved to the left carriage
travel is to the left, when moved to the right travel is to the right and when in the center
position the carriage is stoped.
NOTE: CARRIAGE POWER FEED UNIT IS NO USED FOR THE THREADING
OPERATION.
Place lever “F” (Fig.11) in the center position and engage lead screw nut “Q” (Fig.32) by
moving lever “R” (Fig. 32) clockwise. Set the two carriage stops “I” (Fig. 30) by
loosening set screw “H” (Fig.30) to appr ox imate thread length and re-tighten set screw
“H”. Final adjustment of the stops can be m ade with adjusting screw “G” (Fig. 30). Make
a trial run with th e tool away from the work to pick up the shou lder or end of the triad by
using the tool post slide. The tool should clear the right side of the thread by
approximately 6.5nn.
NOTE: LOCK CARRIAGE STOPS SECURELY BEFORE STARTING THE
THREADING OPERATION. DO NOT RELEASE CARRI AGE NUT “ Q” (Fig.32)
UNTIL THE THREADING OPERATION IS COMPLETED.
Once the stops are set, move the carriage to the right using lever “F” (Fig.11) and adjust
the tool by use of the cross-feed.
Left hand threading can be done wit h the spin d le running in the “FORWARD” direct io n,
except the threading will be done from left to right.
OUTSIDE CHANGE GEARS
A set of five gears and bracket are pr o vid ed as standard equipment for cutting threads not
available in the quick-change gearbox. When set up per the chart on page 18, 10 threads
per inch or 0.25mm pitch can be cut. Three gears are shipped on the bracket and the other
two are in place of the shafts as shown at positions “O” and “F” (Fig.35).
NOTE: BEFORE SETTING UP CHANGE GEARS, PLACE KNOB “A” (Fig.29) IN
THE “OUT” POSITION.
The tumbler handle bracket within the gear box has a round safety bar “ D” (Fig.35) to
prevent installing change gears out side of the gear box until the tumbler handle “A”
(Fig.29) is in the out position. (Additional gears are availabl e for cutting threads not
available through the gearbox).
Be sure to lubricate bushings and shafts on the change gear bracke t with spind l e oil each
time a set up is made. If long run threa ding is involved, lubricate daily.
ENGLISH THREADS USING OUTSIDE CHANGE GEARS
1. Turn off power supply.
2. On the english side of the change gea r brac k et “L” (Fig.36) mount first gear on stud
“K” with spacer between gea rs . O nly snug bolt “I” (Fig.36).
3. Mount Idler Gear “G” and snug bolt “H”, but do not mesh with first gear on stud “K”.
4. Loosen knob “F”(Fig.29), open gearbox door and remove 50-tooth gear “A” and 127-
tooth gear “B”(Fig.34).
5. If the thread chart specifies the number of teeth in the first gear to be other than 22
teeth gear “C” (Fig.35) must be replaced with specified gear.
6. Remove tumbler gear “F” (Fig.35).
7. Moount change gear bracket assembly (Fig.36 on pivot post “E” (Fig.35) and snug
bracket bolt “R” (Fig.37).
8. Make certain key is in place and mount screw gear “ H” (Fig. 3 7) and replace bolts
“U” and “V”.
9. Adjust gear on stud “P” (Fig.37) with gear “H” allowing .003 to .004” backlash and
tighten bolt “Q” (Fig.37).
10. Adjust gear “M” allowing .003” to .004” between it and gear “O” (Fig.35) and tighten
bolt “N” (Fig.37).
11. Pivot bracket to obtain .003” to .004” backlash between gear “O” (Fig35) and gear
“M” (Fig. 37) and tighten bolt “ R” (F ig.37).
12. Check all gears f or proper fit and all bolts are properly tightened.
13. Close gearbox door, tighten knob “F” (Fig.29) and set knob “C” (Fig.29) to the
position specified on the chart.
14. Turn English/Metric knob “B” (Fig.29) to “English”.
15. Set Feed/Thread knob “D” (Fig.33) to the Thread position.
16. Follow the same procedures for setting carriage stops, lead screw nut and compound
slide as when cutting threads from the gear box.
NOTE:
a. the 50 tooth gear “A” and 127 tooth gear “B” (Fig.34) must be remounted
(without the bracket) to cut metric threads through the gearbox.
b. When disassembling setup, remount 22 tooth gear “O” and gear “F” (Fig.35).
METRIC THREADS USING OUTSIDE C HA NGE GEARS
1. Turn off power supply.
2. Mount Idler Gear “Y” on the metric side of the change bracket “X” (Fig.38) and snug
bolt “B”.
3. Loosen knob “F” (Fig.29), open gearbox door and remove 127-tooth gear “B” (Fig34).
4. Mount change gear bracket assembly (Fig.38) on pivot post “E” (Fig.35) and snug
Bolt “B” (Fig.39).
5. Remove First Gear “O” (Fig.35) and replace bolt. (Do not misplace key).
6. Mount First Gear on screw “D” (Fig.39).
7. If the thread chart specifies the number of teeth for the Tumbler Gear to be other than
22 teeth, replace gear “F” (Fig.35) with the specified gear.
8. Adjust Idler Gear “G” (Fig.3 9 ) allowing .003” to .004” backlash between it and
tumbler gear “F” and tighten bolt “E” (Fig.39).
9. Pivot bracket to obtain .003’ TO .004” backlash between the idler gear “G” and
Headstock I --------------------------------------------------
Headstock II -------------------------------------------------
Collet closer assembly -------------------------------------
Gear box assembly I ---------------------------------------
Show which shaft assembly on gear box assembly II ---
2nd drive shaft ---------------------------------------