Acer Supra 818PD User manual

ACER
HIGH PRECISION
AUTOMATIC SURFACE
GRINDER
OPERATION MANUAL
MODEL：Supra 818PD～
Supra2040PD
Taiwan: Ya-Gin Machine Tool Manufacturing, Inc.
No. 101, Lane 506, Seng-Karng District, Taichung City, Taiwan
Tel: [phone] Fax: [phone]
CA: Springwood Industrial, Inc.
1062 N. Kraemer Place, Anaheim, CA 92806 USA
Tel: [phone] Fax: [phone]
NJ: Klim Industrial, Inc.
244 N. Randolphville Rd, Piscatawa, NJ 08854 USA
Tel: [phone] Fax: [phone]
Revised: 7/29/11

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CONTENTS
CHAP. 1 SAFETY RULES
1.1 GENERAL NOTICES FOR OPERATION -------------------------------------------------------- 1-1
1.2 NOTICES FOR USE OF GRINDING WHEEL--------------------------------------------------- 1-1
CHAP. 2 DESCRIPTION OF MACHINE FEATURES
2.1 MACHINE FEATURES -------------------------------------------------------------- 2-1
2.2 MACHINE SPECIFICATIONS -------------------------------------------------------------- 2-2
2.3 LEGEND OF THE MACHINE -------------------------------------------------------- 2-6
2.4 SPACE OCCUPATION OF MACHINE ---------------------------------------------------------- 2-8
2.5 GRINDING CAPACITY -------------------------------------------------------- 2-10
2.6 ACCESSORIES -------------------------------------------------------------------- 2-13
CHAP. 3 MOVING THE MACHINE
3.1 FIXING THE MACHINE -------------------------------------------------------------- 3-1
3.2 LIFTING MACHINE BY HOIST -------------------------------------------------------- 3-2
3.3 MOVING MACHINE BY FORKLIFT ------------------------------------------------------ 3-4
CHAP. 4 INSTALLING MACHINE
4.1 PLACING THE MACHINE -------------------------------------------------------------- 4-1
4.2 ADJUSTING MACHINE LEVELING ------------------------------------------------------------ 4-2
4.3 INSTALLING HYDRAULIC SYSTEM FOR LONGITUDINAL FEED ---------------------- 4-3
4.4 INSTALLING COOLANT SYSTEM -------------------------------------------------- 4-4
4.5 ELECTRIC WIRING -------------------------------------------------------- 4-6
CHAP. 5 GRINDING OPERATION
5.1 MOUNTING, DISMANTLING AND BALANCING GRINDING WHEEL ----------- 5-1
5.2 MOUNTNG WORKPIECE -------------------------------------------------------------- 5-5
5.3 SURFACE GRINDING ---------------------------------------------------------------- 5-7
5.4 WORKPIECE SIDE SURFACE GRINDING ------------------------------------------------------ 6-9
5.5 VERTICAL SURFACE GRINDING ------------------------------------------------------------ 5-12
5.6 ANGULAR SURFACE GRINDING ------------------------------------------------------------ 5-13
5.7 TROUBLE SHOOTING FOR SURFACE GRINDING ------------------------------ 5-16
5.8 RECOMMENDED GRINDING WHEEL SPECIFICATIONS FOR SURFACE GRINDING ------ 5-18
5.9 PERFORMANCE COMPARISON AMONG VARIOUS GRINDING WHEELS ---------------- 5-19
5.10 SELECTING GRINDING WHEEL ---------------------------------------------------------------- 5-19
5.11 POROUS CERAMIC BONDING GRINDING WHEEL SPECIFICATIONS --------- 5-20

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CHAP. 6 MACHINE MAINTENANCE
6.1 NOTICES ---------------------------------------------------------------- 7-1
6.2 HYDRAULIC SYSTEM ---------------------------------------------------------------- 7-1
6.3 LUBRICATION SYSTEM ---------------------------------------------------------------- 7-3
6.4 ELECTRIC CONTROL SYSTEM ---------------------------------------------------------------- 7-5
6.5 PERIODIC MAINTENANCE ---------------------------------------------------------- 7-6

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1-1
CHAP. 1 SAFETY RULES
SAFETY FIRST！
We are pleased to give instructions of safety rules for the machine operation. Always pay
attention to your safety when operating the machine. Properly save this operation manual. It is
suggested to keep the operation manual at the side of machine for convenient reference.
1. GENERAL NOTICES FOR OPERATION
1.1 Before operating the machine, the operator must have a thorough understanding of operation
procedures and methods.
1.2 Always keep all warning labels complete. Do not tear or blacken any warning label.
1.3 If not required, do not open any guard or door.
1.4 Do not remove or move any limit switch and safety protection switch.
1.5 Use only proper tools for adjusting and maintaining the machine. It is important to perform
periodic maintenance of the machine.
1.6 When operating the machine, do not have your hands or any part of your body placed on the
running part of the machine.
1.7 Be sure to turn power off before cleaning the machine. Do not use an air gun (compressed air)
or your hand to clean off the dusts existed on the magnetic chuck or table.
1.8 When adjusting the coolant nozzle, make sure the power source has been turned off.
1.9 Periodically replace the slideways＇lubrication oil, that ensures the machine accuracy and
service life.
2. NOTICES FOR USE OF GRINDING WHEEL
2.1 The normal spindle rotating direction is clockwise.
2.2 Before using a grinding wheel, it is requested to perform balancing calibration on the grinding
wheel.
2.3 Before the grinding wheel comes to a complete stop, do not allow your hand to approach the
working area of grinding wheel.
2.4 Before opening the grinding wheel guard or replace the grinding wheel, be sure to turn power
off and press the emergency stop switch. Always prevent anyone from pressing the spindle
start switch or any other switch.
2.5 Pay attention when mounting or placing a grinding wheel. Do not bump against the grinding
wheel.
2.6 Make sure the workpiece has been clamped securely before performing grinding operations.
※In order to achieve high quality and high efficiency grinding operations, it is very important
to select a grinding wheel according to workpiece. (For details refer to the technical
information supplied by a grinding wheel manufacturer or the instructions given on page
16~19 in this operation manual). During operating the machine, if you have any question,
contact your local distributor or the machine manufacturer. Thank you！

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CHAP. 2 DESCRIPTION OF MACHINE FEATURES
2.1 MACHINE FEATURES:
1. High Precision Cartridge Type Spindle:
The spindle runs in 4 precision angular contact ball bearings in combination with roller
bearings. Before assembling, all bearings are preloaded and measured. The spindle is
driven by a V3 graded motor, making the machine ideal for heavy-duty and precision
grinding.
2. Wear-resistant Slideways:
The slideways between the saddle and base are designed with double “V＂slideways,
and one “V＂and one “flat＂slideways between the table and saddle. Both slideways
are coated with Turcite-B, and precision scraped to ensure smooth movement and high
accuracy.
3. Rigid Casting Parts:
All structural parts of the machine are manufactured from high quality cast iron, tempered
for stress relief. This combined with rib reinforcement in the casting parts to upgrade
structural rigidity.
4. Oversized Column And Base:
The oversized column and base feature increased stability and rigidity. The column interior
is reinforced by honeycomb ribs, providing heavy grinding resistance capability.
5. Automatic Lubrication System:
The lubrication system employs a pump providing circulated forced lubrication to all screws
and slideways, which achieves an outstanding lubrication effect.
6. Cross And Vertical Feed Ball Screws:
The saddle forward / backward movement (Cross feed) is driven by an AC motor in
combination with ball screw transmission, providing rapid traverse forward and backward
and automatic feed functions.

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2-2
2.2 MACHINE SPECIFICATIONS
2.2.1 818 PD SPECIFICATIONS:
MODEL
DESCRIPTIONS 818PD
Table area W x L(mm) 203x460
Max. grinding length (mm) 480
Max. grinding width (mm) 228
Max. distance from spindle center
line to table surface (mm) 460
Standard magnetic
chuck size (mm) 200x450
Max. travel-hydraulic
(mm) 480
Max. travel-manual
(mm) 510
Longitudinal travel of
table Variable table feed
speed 60HZ,5~25m/min;50HZ,5~20m/min
Automatic feed
increment (mm) 1~10
Automatic constant
feed speed 20~230mm/min
Max. automatic travel
(mm) 235
Max. manual travel
(mm) 250
Handwheel per
revolution (mm) 1.0HPx6P
Cross travel of saddle
Handwheel per
graduation (mm) 0.02
Automatic feed (mm) 0.001~0.05
Step feed (mm) 0.001
Rapid elevation speed
(Approx.) 250mm/min
Slow elevation speed
(Approx.) 6mm/min
Running speed 60HZ,3450 R.P.M;50HZ,2850 R.P.M
Vertical feed of
wheelhead
Motor (HP) 2.0
Outside diameter
(mm) 203
Width (mm) Standard 12.7mm,Max. 19mm
Standard grinding
wheel Bore (mm) 31.75
Hydraulic drive Motor horsepower 1.0HPx6P
Cross feed drive Motor horsepower 370W
Rapid elevation drive Motor horsepower 60W
Floor space Total space required 1810x1285x1680mm
Net weight (Approx.
kgs) 1205
Weight Gross weight (
A
pprox.
kgs) 1375
Total rated
horsepower (Approx.) (HP) 3.0
Packing dimensions (mm) 1890x1430x1930
The machine manufacturer reserves the right for changing machine design, sizes and specifications without prior
notice. The contents shown in this catalog are for reference only.

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2.2.2 1020 PD & 1224 PD SPECIFICATIONS:
MODEL
DESCRIPTIONS 1020PD 1224PD
Table area W x L(mm) 254x508 300x600
Max. grinding length (mm) 520 600
Max. grinding width (mm) 280 300
Max. distance from spindle center
line to table surface (mm) 500 600
Standard magnetic
chuck size (mm) 250x500 300x600
Max. travel-hydraulic
(mm) 580 650
Max. travel-manual
(mm) 620 730
Longitudinal travel of
table Variable table feed
speed 60HZ,5~25m/min;50HZ,5~20m/min
Automatic feed
increment (mm) 1~13 1~19
A
utomatic constant feed
speed 20~230mm/min
Max. automatic travel
(mm) 270 310
Max. manual travel
(mm) 300 340
Handwheel per
revolution (mm) 5
Cross travel of
saddle
Handwheel per
graduation (mm) 0.02
Automatic feed (mm) 0.001~0.05
Step feed (mm) 0.001
Rapid elevation speed
(Approx.) 150mm/min
Slow elevation speed
(Approx.) 6mm/min
Running speed 50/60HZ,2850/3450R.P.M 50/60HZ,1450/1750R.P.M
Vertical feed of
wheelhead
Motor (HP) 3.0 5.0
Outside diameter (mm) 203 305
Width (mm) Standard 12.7,Max.19 31.75
Standard grinding
wheel Bore (mm) 31.75 76.2
Hydraulic drive Motor horsepower 2.0HPx6P
Cross feed drive Motor horsepower 370W
Rapid elevation drive Motor horsepower 1/5 HP x 6P
Floor space Total space required 2450x1450x1750mm 2700x1600x1850mm
Net weight (Approx.
kgs) 1810 1990
Weight Gross weight (Approx.
kgs) 2160 2290
Total rated
horsepower
(Approx.) (HP) 5.2 8.25
Packing dimensions (mm) 2480x2060x2100 2480x2140x2100
The machine manufacturer reserves the right for changing machine design, sizes and specifications without prior
notice. The contents shown in this catalog are for reference only.

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2.2.3 14/16 PD SPECIFICATIONS:
1428PD 1436PD 1632PD 1640PD
305x712 305x915 406x813 406x1020
712 915 813 1020
330 410
Standard column: 630
300x700 300x900 400x800 400x1000
760 960 890 1060
830 1000 930 1100
60HZ,5~25m/min;50HZ,5~20m/min
1(mm)~~25(mm)
350mm 430mm
380mm 460mm
5mm
0.02mm
0.001mm~~0.05mm
0.001mm
150mm/min
6mm/min
60HZ,1750R.P.M;50HZ,1450R.P.M
Standard: 5HP; Optional: 7.5HP,10HP
355mm
50mm
127mm
3.0HPx6P
370W
1/4 HP x 6P
2950x1970x2050 3550x1970x2050 3290x2200x2050 4020x2200x2050
3020 3330 3400 4000
3520 3700 4000 4500
9HP(Spindle motor 5HP),11.5HP(Spindle motor 7.5HP),14HP(Spindle motor 10HP)
2500x2290x2220 2780x2290x2220 2780x2290x2220 3250x2290x2220
The machine manufacturer reserves the right for changing machine design, sizes and specifications without prior
notice. The contents shown in this catalog are for reference only.

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2.2.4 2040 PD SPECIFICATIONS:
MODEL
DESCRIPTIONS 2040PD
Table area W x L (mm) 406x1020
Max. grinding length (mm) 1020
Max. grinding width (mm) 500
Max. distance from spindle center line to
table surface (mm) Standard column: 630 Optional high column: 720
Standard magnetic chuck
size (mm) 500x1000
Max. travel-hydraulic
(mm) 1060
Max. travel-manual
(mm) 1100
Longitudinal travel of
table Variable table feed
speed 60HZ,5~25m/min;50HZ,5~20m/min
Automatic feed increment
(mm) 1(mm)~~25(mm)
Automatic constant feed
speed 510mm
Max. automatic travel
(mm) 520mm
Max. manual travel (mm) 5mm
Cross travel of saddle
Handwheel per revolution
(mm) 0.02mm
Handwheel per graduation
(mm) 0.001~0.005mm
Automatic feed (mm) 150mm/min
Step feed (mm) 6mm/min
Rapid elevation speed
(Approx.) 1mm
Vertical feed of
wheelhead
Slow elevation speed
(Approx.) 0.005mm
Running speed 60HZ,1750rpm;50HZ,1450rpm
Spindle motor Motor (HP) Standard: 7.5HP
Outside diameter (mm) 355mm
Width (mm) 50mm
Standard grinding wheel
Bore (mm) 127mm
Hydraulic drive Motor horsepower 3.0HPx6P
Cross feed drive Motor horsepower 1KW
Rapid elevation drive Motor horsepower 1/4 HP x 6P
Floor space Total space required 3500x2290x2220
Net weight (Approx. kgs) 4800
Weight Gross weight (Approx.
kgs) 5200
Total rated horsepower
(Approx.) (HP) 11HP
Packing dimensions (mm) 4500x2200x2100
The machine manufacturer reserves the right for changing machine design, sizes and specifications without prior
notice. The contents shown in this catalog are for reference only.

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2.3 LEGEND OF THE MACHINE
2.3.1 MODEL 818PD
NO. DESCRIPTION NO. DESCRIPTION
1 Column 10 Saddle
2 Grinding wheel guard 11 Cross movement handwheel
(Z-axis)
3 Grinding wheel 12 Cross travel regulation knob
4 Coolant nozzle 13 Operation panel
5 Column lubrication 14 Longitudinal speed control handle
6 Splash guard (optional) 15 Electrical cabinet
7 Table 16 Base
8 Longitudinal travel adjustment 17 Hydraulic power unit
9 Longitudinal movement handwheel

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2.3.2 MODEL 1020 & 1224 & 14/16 & 2040 PD
NO. DESCRIPTION NO. DESCRIPTION
1 Saddle 10 Table
2 Hydraulic power unit 11 Longitudinal movement handwheel
3 Spindle head 12 Cross movement regulation knob
4 Grinding wheel guard 13 Base
5 Longitudinal travel speed regulation
valve 14 Column
6 Operation panel 15 Movable splash guard
7 Grinding wheel 16 Gross movement handwheel
8 Splash guard 17 Electrical cabinet
9 Longitudinal movement regulation
knob

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2-8
2.4 SPACE OCCUPATION OF MACHINE
2.4.1 MODEL 818PD
MODEL AB C D E F G H I
818PD 1730 1355 720 1960 700 1020 270 280 860

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2-9
2.4.2 MODEL 1020 & 1224 & 14/16 & 2040 PD
It is requested to leave sufficient spaces, which should be bigger than the values shown on the
table below.
MODEL AB C D E F G H I
1020PD 1700 1500 1065 2340 760 950 350 345 1037
1224PD 1800 1555 1065 2665 760 950 365 385 1087
1428PD 1940 1920 1315 2950 1050 950 410 430 1240
1436PD 1940 1920 1315 3600 1050 950 410 430 1240
1632PD 1940 2185 1500 3290 1050 950 490 535 1520
1640PD 1940 2185 1500 3980 1450 950 490 535 1520
2040PD 2120 2185 1500 4210 1580 990 435 640 1670
Unit：mm

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2.5 GRINDING CAPACITY:
2.5.1 818 PD
PD MODEL 818
(1) Max. width of grinding 228mm
(2) Max. height of grinding 358mm
(3) Max. table travel 515mm
(4) Max. table load 202Kg
(5)Magnetic chuck sizes
(mm) 200x450
(A)Outside width of table 275mm
(B)Width of table 212mm

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2.5.1 1020 PD & 1224 PD
PD MODEL 1020 1224
(A) Grinding wheel size 205mm(8”) 305mm(12”)
(1) Max. width of grinding 281mm 308mm
(2) Max. height of grinding 397mm 427.5mm
(3) Max. manual travel of table 620mm 730mm
(4) Max. table load 280Kg 310Kg
(5) Magnetic chuck sizes (mm) 250mm X 500mm 300mm X 600mm
(B) Grinding wheel thickness 19mm 34mm
(C) Width of table surface 250mm 300mm
(D) Outside width of table 345mm 385mm
NOTE: The maximum table load does not include the magnetic chuck weight.

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2.5.2 14/16 PD & 2040 PD
PD MODEL 1428 1436 1632 1640 2040
(1) Max. width of grinding 330mm 330mm 410mm 410mm 530mm
(2) Max. height of grinding 450mm 450mm 450mm 450mm 552.5mm
(3) Max. table travel 830mm 1000mm 930mm 1100mm 1100mm
(4) Max. table load 346Kg 379Kg 420Kg 428Kg 465Kg
(5)Magnetic chuck sizes
(mm) 300x700 300x900 400x800 400x1000 500x1000
(A)Outside width of table 430mm 430mm 535mm 535mm 640mm
(B)Width of table surface 305mm 305mm 406mm 406mm 508mm
NOTE: The maximum table load does not include the magnetic chuck weight.
Table 2-7

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2-13
2.6 ACCESSORIES:
STANDARD ACCESSORIES:
1. Tool box with tools -------------------------------------- 1set
2. Wheel extracting nut -------------------------------------- 1set
3. Balancing bar -------------------------------------------- 1pc
4. Grinding wheel ---------------------------------------------- 1pc
5. Wheel flange --------------------------------------------- 1set
6. Small paint can ---------------------------------------- One can each
7. Diamond dresser -------------------------------------------- 1pc
8. Automatic lubrication system -------------------------------------- 1set
9. Coolant wiper -------------------------------------------- 1pc

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3-1
CHAP. 3 MOVING THE MACHINE
3.1 FIXING THE MACHINE:
Before shipping or moving the machine, all moving parts of the machine are completely
fixed.
1. The “L” shaped pieces are applied for fixing between the table and saddle. The saddle
is also fixed to base by using the fixing pieces. Fixing method is illustrated on the
below figure.
2. Once the machine is moved to a proper location, you need to remove all fixing blocks.
Store these fixing pieces at a proper location for use in the future.
MODEL 818PD

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3-2
MODEL 1020~2040PD
3.2 LIFTING MACHINE BY HOIST:
3.2.1 MACHINE PACKED BY CRATE:
1. The packed machine weight (gross weight) is marked on the crate. Below table also
shows the weight of machine for reference:
MODEL 818 SERIES 1020 SERIES 1224 SERIES 1428 SERIES
WEIGHT (kgs) 3520 3600 3700 3520
MODEL 1436 SERIES 1632 SERIES 1640 SERIES 2040 SERIES
WEIGHT (kgs) 3700 4000 4500 5200
2. When applying a hoist for lifting the machine, make sure its loading capacity must exceed
the weight shown on above table.
3. The loading capacity of the steel wires to be used for lifting must exceed the weight shown
on above table. Also, checking if the steel wires are damaged or not.

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3-3
4. Shown as figure below, you need to wrap the steel wires under the bottom of crate, and fit
another ends the steel wires in the hook of hoist.
5. When lifting the packed machine, pay attention to machine leveling and balance.
6. ※During lifting, please always take care of safety！※
3.2.2 LIFTING UNPACKED MACHINE:
1. When applying a hoist for lifting the machine, make sure its loading capacity must exceed
the weight shown on above table.
2. The loading capacity of the steel wires to be used for lifting must exceed the weight shown
on above table. Also, checking if the steel wires are damaged or not.
3. Below table also shows the weight of the machines for reference:
MODEL 818 SERIES 1020 SERIES 1224 SERIES 1428 SERIES
WEIGHT (kgs) 1205 1810 1990 3020
MODEL 1436 SERIES 1632 SERIES 1640 SERIES 2040 SERIES
WEIGHT (kgs) 3330 3400 4000 4800