MITSUI MSG 250M Instructions Manual
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MITSUI MSG 250M Instructions Manual

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Mitsui MSG
250M 250MHi
200M 200MHi
SEA f ftt-Ce-
1 9 - - t IN
Instructions and a n d Parts

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Summary of Contents for MITSUI MSG 250M

  • Page 1 Mitsui MSG 250M 250MHi 200M 200MHi SEA f ftt-Ce- 1 9 - - t IN Instructions and a n d Parts...

  • Page 2: Specifications

    Mitsui Precision Surface Grinders MSG-250M/250MIll,MSG-200M/200MHi I N D E X Pages 1. SPECIFICATIONS 1. Specifications of MSG-250M/250MHi 2. Specifications of MSG-200M/200MHi 2. SELECTION AND PREPARATION 3 — OF RIGHT PLACE FOR GRINDING OPERATIONS 1.Vibrationless locality 2.No fluctuation of temperature 3.Floor space requirements 3.
  • Page 3 6. STRUCTURE, MECHANISM AND ADJUSTING OF MACHINE'S MAIN PARTS A. Grinding head (Common to all models) Adjustment of head-slideway clearance B. Vertical feed system (Common to all models) C. Cross feed system, model 250M/250MHi D. Cross feed system, model 200M/200MHi E.
  • Page 4 1. S P E C I F I C AT I O N S .MITSUI SURFACE GRINDER MODEL MSG-250M/250MHI 1) Max. longitudinal movement of the table " Max. cross movement of the table " 2) Max. height from table surface to "...
  • Page 5 2.MITSUI SURFACE GRINDER MODEL MSG-200M/200MHI 1) Max. longitudinal movement of table " Max. cross movement of table " 2) Max. height from table surface to " the grinding wheel spindle center 3) Max. grinding length and width — " 4) Dimensions of table working surface 1 4 " X 6 - 1 / 4 "...
  • Page 6 Make sure the machine will not be placed close to the quenching furnace or oil bath. Otherwise chemical gases from them can damage the electricals of the machine. The ideal place for the Mitsui Surface Grinder is ventilated room, air conditioned to the temperature of 20 degrees centigrade (68 degrees Fuhrenheit).
  • Page 7 Floor Plans (Fie.2) li 1" M S G -250HII i 22-2/5" 811 2 4 " 8" 1" — 1 4 0 " . J ..- - - - 42" HSG-200Mili Foundaiion (Fic.1) II" H- 8" 8" 24"...
  • Page 8 3. U N PA C K I N G This machine is completely assembled and perfectly adjusted before packing in the crate. Careful handling is important to assure maximum performance of the grinder. A sudden shock to or tipping over of the machine can be a serious reason to deteriorate accuracy of the machine.
  • Page 9 into the 20mm dia. cavities, 2 at both sides and 1 a t the back center of the machine, and place 3 leveling saucers at the positions specified in Fig.2 on the foundation to support the machine. 6. Lower the machine so that the 3 leveling screws will reach the center of the 3 leveling saucers, respectively and snugly.
  • Page 10 CRAMPING O F TA B L E AND S A D D L E Column aindina_h_epd sto e r Table sto e r stand Saddle d Handwhee neop-Pamq.. protection bar Table fixing bolt Saddle stopper bracket Fig .4 Fig.5 Motor Saddle stopper bracket Table stopper bracket Saddle stopper bracket...

  • Page 11: Setting Up The Machine

    4. SETTING U P THE MACHINE The table and saddle are firmly clamped for the protection of the machine during transportation. The clamping should be released for setting it up. Anti-rust oil must be removed and new oil applied. Table way protection bakelite bars must be replaced with the ball bearing retainers in the table-sliding ways.
  • Page 12 Apply same treatment to the V-ways extending out from the front end of the base. 2 Slideways to guide the grinding head With the saddle positioned closest to the operator, detach the frame for the vertical way-cover and way-cover itself. Wipe Out and wash the grease used as anti-rust agent from the slideways.
  • Page 13 c. Lift up the table from the saddle surface and put it aside. Be very careful not to hurt the sliding surface of the table bottom. d. Remove the grease from the slideways of both table and saddle. Coat them lightly with Vactra No.2. (The neoprene protection bars in the saddle slideways are replaced with the ball bearing retainers (enclosed in the same crate as the machine) in this process.)

  • Page 14: Final Check

    Clean it up with solvent. REPLACEMENT OF NEOPRENE BARS WITH UNEAR BALL BEARINGS The Linear ball bearings for longitudinal table feed system are removed from the table slideways for protection of the balls during transportation. When the table is lifted, remove the 6 pieces of neoprene shipping bars placed between table and saddle slideways.
  • Page 15 5. Is the lubrication complete? Above being over, the machine will be ready as soon as correctly connected electrically with the source voltage.
  • Page 16 5. PART ' S NAMES 1. NAMES OF THE MAIN PARTS-MODEL M S G - 2 5 0 M / 2 5 0 M H I 7,71 13. Table stopper lever 1. Base 14. Slideway adjusting bolts 2. Saddle 7,77 15.
  • Page 17 r -r 2. NAMES OF THE MAIN PARTS-MODEL MSG-200M/200MHI (Fig. 8) *0:-N e r r ••,13 1 _ 1 = 9 , 1 - r t ) • • = c 2 3 = b dC072=M 1±1-1 ••••.,•—,• . = = , • ••••••••.••...
  • Page 18 6. STRUCTURE, MECHANISM A N D ADJUSTING OF MACHINE' S MAIN PARTS Thorough knowledge o f the structure, mechanism and adjusting o f the machine's 777? main parts i s very much desired for the operator to make the most o f this surface grinder, f o r optimal performance and preventive maintenance a s well a s safety.
  • Page 19 a. Adjust the bolts on the backside of Head "B" (Fig.9). b. By loosening the head fastening bolt and by tightening the head adjusting bolt, the head proceeds toward the operator. c. By opposite manipulation-by tightening the head fastening bolt and by loosening the head adjusting bolt, the head recedes.
  • Page 20 IMPORTANT: This is a very sensitive manipulation and should not be practiced by unskilled personnel not experienced in this kind of adjustment. , In case no such person is available, please contact our distributor. 4. The spindle runs in super precision angular contact ball bearings, used two each in front and back, which keep it at low temperature and prevent stretching of the spindle, thus ensuring the precision for long.
  • Page 21 3. By the spiral bevel gears and ball bearings of this parts, the light driving of feed without and play and noise is completely assured. Also, the below around the male screw doubly protects the feed from the dust, and there is scarcely any damage due to the dust.
  • Page 22 3. The screw height may be adjusted similarly as per C. 3, above. (Fig. 14) Lock nut Saddle Bearing holder S c r e w E. LONGITUDINAL FEED SYSTEM (Common to MSG-250M/250MHI, MSG-200M/200M141) 1 This is composed of the drum 01 winding the wire cable and internal gear, etc. Wear-resistant, non-deforming steel, finished by hardening (to HRC 60 or more) and grinding, is used for the table slideways.
  • Page 23 (Fig. 15) Table Linear ball bearing SlidewaY Saddle Tapered end • • • • Handwheul fable stopper lever O M R Wire-winding drum Internal gear Pinion gear Handwheel clamp nut...
  • Page 24 O p t i o n a l p o w e r e l e v a t i o n M o d e l A C 4 6 0 4 / 6 0 H z D i a g r a m (Fle.19) 31 1 1 1.
  • Page 25 Optional v a r i a b l e m o t o r s p e n d c o n t r o l M o d e l AC 2 2 0 / 2 4 0 V 5 0 / 6 0 H z D i a g r a m 2 P M A C 2 2 0 / 2 A 0 v 5 0 / 0 0 M 2 la I...
  • Page 26 O p t i o n a l p o w e r e l e v a t i o n M o d e l A C 2 0 0 - 2 2 0 1 / 6 0 H z D i a g r a m ( F i g . 1 B ) SPH.
  • Page 27 W W I I F E N D — I I M E m F a n o g i o g I I M M O P " M E W I F M I P F E N N T E N N I -MEM it) I n n...

  • Page 28: Operation

    0711 8. OPERATION A. MOUNTING GRINDING WHEEL TO THE SPINDLE [ Never depress the push button to turn on the spindle motor before the flange fastening screw is removed from spindle head to confirm the rotation direction. 1. Remove the flange fastening screw by clockwise rotation of it. This screw is threaded opposite the regular thread so that ii will fasten when spindle is correctly rotating clockwise.
  • Page 29 b. The head will keep moving u p or down while the selector switch i s kept set at either right or left position a t the speed of about 5" per minute. c. Releasing the grip of the selector switch, it automatically returns to the neutral position (center).

  • Page 30: Safety Precautions

    '771 9. SAFETY PRECAUTIONS Bear in mind that the grinding wheel running at a very high speed can hurt the careless operator anytime. This danger, however, may be avoided by observing necessary precautions as follows: 1. L i m i t t o t h e g r i n d i n g w h e e l s i z e Always use a wheel less than 8"...
  • Page 31 b. When loading the work on the magnetic chuck: (1) Make sure that the chuck controller works properly. (2) Confirm the work is firmly gripped by the magnetic chuck before grinding it. i f the work is very small or high, fasten them with auxiliary magnetic or blocks.
  • Page 32 O P T I O N A L F . E A T U R E , P i t . N o . M O A 2 - 2 2 0 4 - 0 1 A U T O M A T I C L U B R I C A T I O N P O A L O N O I T U D I N A L S L I O E w A Y •...

  • Page 33: Maintenance Of The Machine

    Attention should be paid to keep the machine clean all the time. Mitsui will not take a responsibility for the problem, caused by wrong brand lubricants and wrong lubrication cycle. A. L U B R I C AT I O N S The proper choice of lubricating oil and grease assures the high precision and efficiency of the machine.
  • Page 34 (Fie. 22) Au I t = I. i t: Imbr icatur A,B.0 and D are automatically lubricated by Model- M U Automatic Lubricator located right-hand side back of machine base. Pump motor for lubricator starts when spindle switch starter is ON. Every 120 minutes pump motor for Automatic lubricator kicks Oil-cylinder, then feeds oil to the sliding parts, above described.
  • Page 35 Refer to and follow the same procedures as shown in par. 3. a-f. pages 9 and 10. Clean both the ways and balls and coat them with fresh grease. C. M a i n t e n a n c e f o r t h e s t e e l c a b l e f o r Ta b l e driving Saddle Drum U t .
  • Page 36 11. I N S T R U C T I O N M A N U A L F O R A U T O M AT I C LUBRICATOR MODEL MLZ Specifications Synchronous Motor 100V AC. 50/60 HZ, 3W, 1 phase Discharge Volume 1.5 —...
  • Page 37 Oil fillers, metering units were adjusted to suitable for Mobil Vactra No.2 Oil or other same grade oils. Mitsui Precision Machinery Corp. (Importer of Mitsui Grinder) 76 N.Lively blvd., Elk Grove Village. ILL 60007 (312) 593-1634 Handles Vactra No.2 way oil, so please contact service agent on the above address.
  • Page 38 Caution 2 ; Motor terminal wiring diagram is slown as follows : Motor rower Input The suction filter of the pump should be replaced with a new one once a year or more often. Manual _Wig e OVtie • 04 PINK Oilsupplying 0 C a p corn port, / /...

This manual is also suitable for:

Msg 200mMsg 250mhiMsg 200mhi

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