Lapmaster 14 Bench model Lapping Polishing Machine

LAPMASTER 14 BENCH MODEL KEY TO ILLUSTRATION SPECIFICATION

A half-gallon capacity abrasive tank.

Access to fan-cooled gear box in base.

Lapping Plate Outside Dia. 

Lapping Plate Inside Dia. 

Lapping Plate Face Width 

Operating and mains warning light.

Conditioning Inside 

Conditioning Rings Outside 

Number of Conditioning Rings 

Height of Machine .

Width of Machine 

Length of Machine

Lapping Plate Motor.

Compound Pump Motor. Electrical Supply Available: 220/380/440 volts, 3-phase, 50 cycles. Weight of Machine Nett: 2641 lbs. (119 kgs). Gross Weight approx.: 320 lbs. (145 kgs).

LAPMASTER 12 BENCH MODEL KEY TO ILLUSTRATION SPECIFICATION

The half-gallon capacity abrasive tank.

Access to new design fan-cooled gear box in base of machine incorporating friction clutch.

Lapping Plate Outside 

Lapping Plate Inside 

Lapping Plate Face Width 

Conditioning Rings Inside

Conditioning Rings Outside 

Number of Conditioning 

Height of Machine 

Width of Machine 

Length of Machine

Lapping Plate Motor.

Compound Pump Motor. Electrical Supply Available:

LAPMASTER 48 KEY TO ILLUSTRATION SPECIFICATION

10-gallon capacity abrasive tank in the base of machine with built-in electric pump and agitator.

Lapping Plate Outside 

Lapping Plate Inside 

Conditioning Ring Inside 

Conditioning Ring Outside 

Number of Conditioning Rings 4.

Lapping Plate Face 

Height of Machine 

Width of Machine 

Length of Machine 

Tank Agitator Motor.

Lapping Plate Motor.

Abrasive Pump Motor. Electrical Supply Available: 220/380/440 volts, 3-phase, 50 cycles. Shipping Weight Gross: 370 lbs. (167 kgs). Shipping Weight Net: 298 lbs. (135 kgs).

LAPMASTER 36 KEY TO ILLUSTRATION SPECIFICATION

Lapping Plate Outside 

Lapping Plate Inside

Conditioning Ring Inside 

Conditioning Ring Outside 

Number of Conditioning 

KEY TO ILLUSTRATION SPECIFICATION

Two-gallon capacity abrasive tank with 8. One of the three conditioning rings. Lapping Plate Outside Dia. 24 606 mm built-in electric pump fitted to door 9. Rubber-covered roller bar bearing Lapping Plate Inside Dia. 4 114 mm at rear of machine; thoroughly mixes during silent vibration-free operation abrasive and vehicle and feeds the and trouble-free working life. Conditioning Ring Outside Dia. 11 284 mm compound to the orifice block. The compound is fed via the orifice 10. Control handle for adjusting position Conditioning QOAST R RANGE There's a Lapmaster to Fit Your Job regardless of Size of Parts or Production requirements. In this brochure, we present six different sizes of Lapmasters. Note that the same small part lapped at high production on the smallest machine can be lapped at tremendous production rates on the largest. A careful study of these machines will reveal the size best suited to your job and production requirements LAPMASTER 12 BENCH MODEL KEY TO ILLUSTRATION SPECIFICATION giving extensive trouble-free life. THE LAPMASTER 72 FOR PARTS UP TO 27" DIA. THE LAPMASTER 84 FOR PARTS UP TO 33" DIA. The manufacture of these large-capacity machines is at present restricted to the United States. Delivery can however be arranged against specific orders. PAYNE PRODUCTS INTERNATIONAL LIMITED Buckingham Avenue, Trading Estate, Slough, Bucks., England Telephone 26741-4 Telegrams PAYNPRO, Slough Telex 84165 Printed in England - 48 10 LAPMASTER 24 KEY TO ILLUSTRATION SPECIFICATION and lap plate. pedestal of convenient height for the Number of Conditioning Rings 3 operation. 3. The compound valve switch. Lapping Plate Face Width

Rigid lap support bearing. 4. The automatic timing clock for setting Height of Machine the desired lapping cycle. 13. Special Feature: To enable compound Working Height

The serrated lap plate beneath. grades to be changed without loss of Width of Machine time and material in cleaning down

Beneath this cover is the solenoid con- the machine, the agitator tank can be Length of Machine 66 1700 mm trolled compound valve. quickly detached as well as the lap Tank Agitator Motor 1/12

One of the three conditioning rings. plate and conditioning rings and re- Lapping Plate Motor 5 placed with similar units containing

Conductor track down which the com- Electrical Supply Available the required compound. pound flows from the tank onto the 220/380/440 volts sides of the conditioning ring. 14. Spider Bar. 3-phase, 50 cycles

Roller bar attachment allowing free 15. Pneumatic Lifts. Shipping Weight gross LAPMASTER 48 KEY TO ILLUSTRATION SPECIFICATION

10-gallon capacity abrasive tank in the 7. Illuminated start button for lap plate Lapping Plate Outside Dia. 48 1218 mm base of machine with built-in electric and abrasive pump. Lapping Plate Inside Dia. 13 328 mm pump and agitator which thoroughly Conditioning Ring Inside Dia. 17 429 mm 7a. Illuminated stop button for lap plate mixes abrasive and vehicle and feeds Conditioning Ring Outside Dia. 20 505 mm and abrasive pump. the compound to the orifice block. Number of Conditioning Rings 4. Click View to see them.

The polishing plate has an aluminum cast alloy base. It is surfaced with a special alloy compound which gives a very high polish and has long-wearing qualities. In order to obtain utmost reflectivity from a lapped surface for light-band interpretation, it is generally required to hand polish parts briefly on either a polishing plate or polishing paper, after work has been lapped. HAND LAPPING PLATES Lapmaster hand lapping plates are of a special alloy which has proper characteristics for low density, long surface wear and lap cutting action. A strong, reinforced cast base furnishes proper support to the alloy lapping surface. Standard serrations are 1/16 wide and are apart. They can be made in special widths for specific applications. These hand lapping plates are extremely useful as an accessory to the Lapmaster or where there are only a few parts to be lapped and the purchase of a machine cannot be justified. They are furnished in standard 6 and 12 diameter sizes, or larger when required for special purposes. BEVELLED EDGE STRAIGHT EDGES Bevelled-edge straight edges, as shown in use on the 12 hand lapping plate at the right, are available for checking flatness of lapping plates. They are available in 12, 24, and 36 lengths. COMPOUNDS AND VEHICLES Since 1937 we have been using lapping machines and lapping compounds in our plants on countless numbers and types of jobs. From these years of experience, we have found that each and every lapping job, particularly production jobs, should be studied carefully to establish the most effective lapping compound. Since a machine is as good as its tools, and lapping compounds are the tools of lap-masters, we have developed a line of standard and semi-standard lapping compounds and vehicles which will ensure the highly efficient operation you can expect from your Lapmaster. Lapmaster compounds range from the coarsest to the finest optical compounds. Granular sizes are microscopically controlled to ensure proper results as to micro-inch surface finish. In actual use, proper proportion of compounds and vehicle are mixed in the agitator tank of the Lapmaster. The powder or compound does the actual cutting of the metal and is controlled by the viscosity of the vehicle in which the compound is suspended. Basically, we have developed two kinds of compounds... hand lapping compounds and those to be used with Lapmasters. The essential difference is that hand lapping compounds are furnished suspended in the vehicle, while Lapmaster compound and vehicle are furnished separately. The hand lapping compound and vehicle mixtures are adaptable to any lapping machine where suspended compound is used... flat hand laps, internal lapping, and roll lapping machines. Compound numbers have been divided into the 1,000 series and the 2,000 series, and the same numbers refer to both Lapmaster and hand lapping compounds. The 1,000 series are all fine finish compounds, while the 2,000 series has been developed for fast stock removal. LAPMASTER COMPOUND SPECIFICATION Aluminum Oxide SYMBOL CLASS To be used with a Lapmaster compound, except 2220. Lapmaster No. 4 Vehicle To be used with Lapmaster compound No. 2220. GL. 3 Water Base Vehicle Recommended for ceramics or extremely porous materials, where the oil-based vehicle may contaminate the compound. PAYNE PRODUCTS INTERNATIONAL LIMITED Drawings Nos. 1 through 6 show light band re sample gauge block wide. Absolutely stiff spaced bands indicate true flatness. As the gau HOW to flat, the interference bands are seen with great cases, the basis of comparison is an imaginary; Read Light Bands Light band readings through an optical flat, using a monochromatic light source, represent the most accurate method of checking surface flatness. The monochromatic light on which the following diagram- LINE OF CONTACT matic interpretations of light wave readings. are based 2. Band do not a

straight, parallel and equally spaced bands indicate to intersect one comes from a helium-filled tube source which eliminates show that surface is perfectly flat within one bands is equal to o millionths of an inch. one band to the next band, all colours except a yellowish-orange. Wave length of millionths of an inch away from the line of light from this source is millionths of an inch. convex. However, since only one half of the wave length is in the measurement procedure, the increment of measure 1 is one half of one millionth of an inch. The dark bands viewed beneath the optical flat are not light waves; they simply show where interference is pro- duced by reflections from two surfaces. These dark bands are used in measuring, as shown in the illustrations to the right. The band unit is .0000116 millionths of an inch; that is, between the center of one dark band and the center of the next dark band, the level of the work has risen or fallen millionths of an inch in relation to the LINE OF optical flat. + CONTACT Correct interpretation of interference band patterns is sim- ple to master. The illustrations at the right explain the basic - .000016 SECTIC variations from the absolute flat pattern and show how LINE OF CONTACT

Curvature of lines toward line of contact various degrees of variation indicate specific flatness of a -6. Two-way curve indicates part is convex. Tangent line in- ridge along line B-B tersecting one full band indicates part is one C-C of .0000116 in given surface. band or .0000116 millionths of an section A-A . -This inch out of flat. topographical map The line of contact or point of contact referred to in light and optical Roτ. the illustrations is the line or point at which the air wedge between the optical flat and the work is thinnest. To de- termine location of line or point of contact, the flat should be pressed down with the fingers at various above Par the edge of the work. If the bands remain the same distance This chart does not attempt to explain why these if li apart along one particular edge, that edge forms the line bands are formed, but the following rules are important The or point of contact. If the bands tend to broaden and to remember in using the monochromatic light Thus become fewer in number, the opposite edge forms the line and optical flat. vent to for point of contact. PAYNE PRODUCTS INTERNATIONAL LIMITED Duckingham i Telephone 26741-4 Telegrams Get Accurate Readings of Light Bands with Lapmaster Monochromatic Light and Optical Flats The Lapmaster Monochromatic Light offers the finest equipment obtainable for checking and inspecting lapped surfaces. In addition, time and money will be saved by using this light to check the accuracy of gauge blocks, parallel bars, or similar flat parts. With this instrument, exact dimensions and flatness of any part can be determined.

The Monochromatic Light is a sturdy, completely self-contained and portable precision instrument that can handle any size part. The head may be swiveled through an arc of 200 and locked in any position. Light is of high power to show visible bands on relatively poorly polished surfaces and materials difficult to check. Power supply is an integral 6,000 volt transformer which can be operated on either 100-120 volt-50-60 cycle single phase or 200-240 volt-50-60 cycle single phase. Lapmaster Optical Flats offer the most accurate standard of measurement available. They are made of highly transparent quartz which holds its shape indefinitely, is abrasion resistant and resists thermal shock. Both surfaces of the Lapmaster Optical Flat may be used in obtaining accurate readings. This prolongs its useful life. Furthermore, it avoids the reading error that occurs when using the wrong side of a one-sided optical flat. With the Optical Flat as a standard of measurement, checking the degree of flatness is a simple operation. Lapmaster Optical Flats, used with the Lapmaster Monochromatic Light, ensure consistent accuracy in your flatness testing. They are available to a standard. In order to obtain utmost reflectivity from a lapped surface for light and interpretation, it is generally required to hand polish sample parts briefly after work has been lapped. Lapmaster Polishing Plates are made to specifications which have proved satisfactory as a result of long experience in polishing a wide variety of materials. The polishing plate has an aluminium cast alloy base. It is surfaced with a special alloy compound which gives a very high polish and has long-wearing qualities. The plate has a distinct advantage over polishing paper as it avoids rounded edges which develop due to the flexing of polishing paper under hand polishing pressure. They are available in 6 and 12 diameter sizes. Also, the drawings below show the most general flaws of poor lapping types of light band patterns occurring equipment, or incorrect- from such causes. Preparing the Work compound. The two The surface being examined must be sufficiently shiny and smooth so that light will be reflected back through the Optical Flat. On very hard materials, such as hardened alloy steel and other high-quality metals, the lapped finish will generally reflect sufficient light to give accurate readings. On softer materials, it is necessary to polish the surface by rubbing the part on a polishing medium, using a figure-eight motion similar to that used in hand lapping. It is important that the operator holds the part in such a way that no distortion occurs from the manual pressure applied. Preliminary cleaning of the part is also important since it is impossible to polish successfully when liquid or extraneous matter is present. Adjusting the Flat When the part has been polished to adequate reflectivity, it is placed on the stage under the Monochromatic Light source and the Optical Flat is positioned on the surface to be checked. Both the flat and the part must be absolutely clean and dry; clean with a lintless material such as facial tissue or camel's hairbrush. The point of contact optical flat should be placed directly on, and removed directly from the part being checked. It should never be slid across the usually spaced bands 2. Part has not been completely lapped. within one millionth Major portion of area has been lapped flat as this will scratch the flat, thereby shortening its useful life. of bands at outside indicated by straight parallel bands but the The width of the light bands is dependent upon the thickness of is rounded. Rounded falling off and.

Compact, totally self-contained unit with heavy-duty, precision thrust roller bearing. Automatically controlled lapping cycle. equipped, reduction worm gears. Easy loading and unloading. Operator requires no previous lapping experience. Abrasives distributed evenly over lapping experience. area ensuring uniform results. LAPPING ABRASIVES AND VEHICLES Lapmaster lapping abrasives and vehicles effective abrasive and vehicle. There is are the results of years of research by a Lapmaster abrasive with its appro- Payne Products International Limited, priate vehicle to suit any application. on a wide range of applications. From If you have a lapping problem, advice this experience, it has been proved that regarding the correct specification will every lapping operation should be carefully studied to establish the most PRINTED IN ENGLAND 4615 drawings Nos. 1 through 6 show light band ra sample gauge block 1 wide. Absolutely straight spaced bands indicate true flatness. As the gau flat, the interference bands are seen with great How to ease, the basis of comparison is aα agııпaı Read Light Bands Light band readings through an optical flat, using a monochromatic light source, represent the most accurate method of checking surface flatness. The monochromatic light on which the following diagram- LINE OF CONTACT LINE OF CONTACT nematic interpretations of light wave readings are based 2. Bonds do not cc comes from a helium-filled tube source which eliminates 1. Straight, parallel and equally spaced bands line to intersect one show that surface is flat within one bonds is equal to o, millionth of an inch. one band 10 the ne> all colours except a yellowish orange. Wave length of lengths of light from this source is millionths of an inch. away from line of convex.

The Lapmaster Monochromatic Light offers the best equipment obtainable for checking and inspecting lapped surfaces. In addition, time and money will be saved by using this light to check the accuracy of gauge blocks, parallel bar or similar flat parts. With this instrument, exact dimensions and flatness of any part can be determined. The Monochromatic Light is a sturdy, completely self-contained and portable precision instrument that can handle any size part. Reversible light head permits checking normal size pieces on the stage, larger parts on a table. Light is of high power to show visible bands or relatively poorly polished surfaces and materials difficult to check. Power supply is an integral 6,000-volt trans- former which can be operated on either 100-120 volt-50-60 cycle single phase or 200-240 volt-50-60 cycle single phase. Optical Flats Lapmaster Optical Flats offer the most accurate standard of measurement available. They are made of highly transparent quartz which holds its shape indefinitely, is abrasion resistant and resists thermal shock. Both surfaces of the Lapmaster Optical Flat may be used in obtaining accurate readings. This prolongs its useful life. Furthermore, if avoids the reading error that occurs when using the wrong side of a one-sided optical flat. With the Optical Flat as a standard of measurement, checking the degree of flatness is a simple operation. Lapmaster Optical Flats, used with the Lapmaster Mono- chromatic Light, ensure consistent accuracy in your flatness testing. They are available to a standard of either 1/10 or 1/5 of a light band across their diameter and may be obtained in 2, 3, 4, 6.

LAPMASTER 12 BENCH MODEL KEY TO ILLUSTRATION SPECIFICATION

The half-gallon capacity abrasive tank.

Access to new design fan-cooled gear. Lapping Plate Inside Dia. 12 304 mm. Lapping Plate Face Width. The manufacture of these large-capacity machines is currently restricted to the United States. Delivery can be arranged against specific orders. PAYNE PRODUCTS INTERNATIONAL LIMITED Buckingham Avenue, Trading Estate, Slough, Bucks., England Telephone 26741-4 Telegrams PAYNPRO. Slough Telex 84165 Printed in England - 4810 Base of machine with built-in electric and abrasive pump. Lapping Plate Inside Dia. 13 328 mm. Conducting Rings Outside Dia. 17 429 mm. Conducting Rings Outside Dia. 20 505 mm. Lapping Plate Face Width 19 493 mm. Electric Supply Available.

The compound is fed via the four orifice blocks through interchangeable. Working Height 39 991 mm. Width of Machine 56 1422 mm. Length of Machine 64 1621 mm. One of the four adjustable yokes which. Tank Agitator Motor. Shipping Weight Gross 10,976 lbs. 4977 kgs. Shipping Weight Net 11,220 lbs. 4635 kgs. The above can be supplied with Pneumatic Lifts if required. THE LAPMASTER The Crane Packing Company of Morton Grove, Illinois, developed the LAPMASTER for the specific purpose of producing mechanical seals for their own use. Their requirements demanded a machine capable of producing large quantities of components made of various types of material to accuracies of better than one light band and with a surface finish from two to three microinches. All existing types of lapping machines were tested and rejected, and it was only after a prolonged and intensive research program that the prototype of the present LAPMASTER was evolved. It was not until fourteen years later that the Crane Packing Company decided to market their extremely successful development. This is where we come into the story. To handle all European manufacture and sales of the LAPMASTER range of machines, the parent Company formed Payne Products International Limited. That is our background. The following pages will tell you something of what we have achieved and what we have to offer. THE LAPMASTER WORKS First, the agitator tank is filled with Lapmaster vehicle and compound of the proper proportion. Then, the agitator switch is turned on, starting the compound agitator motor. The compound valve switch is turned on position. The timing clock is set to the desired time cycle. The work being lapped causes wear on the lapping plate. This starts the lap plate and automatically opens the compound valve, allowing compound to flow down the conductor track to the side of the conditioning ring from which it is evenly distributed across the face of the lap by the rotation of the conditioning rings. As the work is wearing the lap, the conditioning rings are continually conditioning the lapping surface. The conditioning rings rotating on the face of the lapping plate continually condition the lap surface during the entire lapping cycle. The action of the conditioning rings is greater than the wear caused by the work being lapped. At the end of the predetermined lapping time, the clock automatically stops the lapping plate and closes the compound valve. Re-starting of the machine is accomplished by merely resetting the timing clock. The conditioning rings placed in balance on the lap generate a flat lap for flat work. RANGE Here's a Lapmaster to Fit Your Job regardless of Size or Production requirements. In this brochure, we present six different sizes of Lapmasters. Note that the same small part lapped at high production on the smallest machine can be lapped at tremendous production rates on the largest. A careful study of these machines will reveal the size best suited to your job and production requirements. LAPMASTER 12 BENCH MODEL KEY TO ILLUSTRATION SPECIFICATION

The half-gallon capacity abrasive tank.

Access to new design fan-cooled gear. Lapping Plate Inside Dia. 12 304 mm. Lapping Plate Face Width. The manufacture of these large-capacity machines is currently restricted to the United States. Delivery can be arranged against specific orders. PAYNE PRODUCTS INTERNATIONAL LIMITED Buckingham Avenue, Trading Estate, Slough, Bucks., England Telephone 26741-4 Telegrams PAYNPRO. Slough Telex 84165 Printed in England - 4810 Base of machine with built-in electric and abrasive pump. Lapping Plate Inside Dia. 13 328 mm. Conducting Rings Outside Dia. 17 429 mm. Conducting Rings Outside Dia. 20 505 mm. Lapping Plate Face Width 19 493 mm. Electric Supply Available.

The compound is fed via the four orifice blocks through interchangeable. Working Height 39 991 mm. Width of Machine 56 1422 mm. Length of Machine 64 1621 mm. One of the four adjustable yokes which. Tank Agitator Motor. Shipping Weight Gross 10,976 lbs. 4977 kgs. Shipping Weight Net 11,220 lbs. 4635 kgs. The above can be supplied with Pneumatic Lifts if required. THE LAPMASTER The Crane Packing Company of Morton Grove, Illinois, developed the LAPMASTER for the specific purpose of producing mechanical seals for their own use. Their requirements demanded a machine capable of producing large quantities of components made of various types of material to accuracies of better than one light band and with a surface finish from two to three microinches. All existing types of lapping machines were tested and rejected, and it was only after a prolonged and intensive research program that the prototype of the present LAPMASTER was evolved. It was not until fourteen years later that the Crane Packing Company decided to market their extremely successful development. This is where we come into the story. To handle all European manufacture and sales of the LAPMASTER range of machines, the parent Company formed Payne Products International Limited. That is our background. The following pages will tell you something of what we have achieved and what we have to offer. THE LAPMASTER WORKS First, the agitator tank is filled with Lapmaster vehicle and compound of the proper proportion. Then, the agitator switch is turned on, starting the compound agitator motor. The compound valve switch is turned on position. The timing clock is set to the desired time cycle. The work being lapped causes wear on the lapping plate. This starts the lap plate and automatically opens the compound valve, allowing compound to flow down the conductor track to the side of the conditioning ring from which it is evenly distributed across the face of the lap by the rotation of the conditioning rings. As the work is wearing the lap, the conditioning rings are continually conditioning the lapping surface. The conditioning rings rotating on the face of the lapping plate continually condition the lap surface during the entire lapping cycle. The action of the conditioning rings is greater than the wear caused by the work being lapped. At the end of the predetermined lapping time, the clock automatically stops the lapping plate and closes the compound valve. Re-starting of the machine is accomplished by merely resetting the timing clock. The conditioning rings placed in balance on the lap generate a flat lap for flat work.

Compound is then delivered by the trol gear housed in cast aluminium Wizlth u ` Machine 17i 442 mm track wire 4 onto the lap plate. flame-proof box. Length of Machine 30 762 mm S. Calibrated yokes allowing accurate I. Access to removable waste tank. Lapping Plate Motor ; positioning of conditioning rings on 12. Adjustable feet absorbing high and lap plate. Coin pziziiid Pump Motor ,; low-frequency vibration. EleN гса1 Supply Available 6. One of the three conditioning rings. 13. Completely sealed Roller Bar Bearings 220/380/440 volts giving extensive trouble-free life.

Work table closely fitting and adjust- 3-phase, 50 cycles able vertically to height of lap plate 14. New lightweight frame having clean Shipping Weight gloss 280 lbs. 127 kgs to enable difficult parts to be slid on functional lines giving ease of handling or off. and access to all working parts. Shipping Weight izefr 224 lbs. 101 kgs LAPMASTER 14 BENCH MODEL

KEY TO ILLUSTRATION SPECIFICATION . 1. A half-gallon capacity abrasive tank 9. Access to fan-cooled gear box in base Lapping Plate Outside Dia. 14 355 mm. with built-in electric pump fitted to of machine incorporating friction Lapping Plate-Inside Dia. 3 76 mm. door at side of machine; thoroughly clutch giving efficient performance and mixes abrasive and vehicle and feeds economical running. Lapping Plate Face Width 5 139 mm. the compound to the orifice block.

Operating and mains warning light Conditioning Rings Inside Dia. 5 132 mm.

Orifice block through which compound grouped with timer and push-buttons Conditioning Rings Outside Dia. 6-¾; 166 mm. is fed by means of an interchangeable for quick visual check. jet 3 allowing a wide range of feeds Number of Conditioning Rings 3 to be selected to suit all requirements. 11. Conveniently placed mains disconnect switch associated with electrical con- Height of Machine 20 527 mm. track wire 4 to the lap plate. trol gear housed in cast aluminium Width of Machine 18 454 mm. flame-proof box.

Calibrated yokes allowing accurate Length of Machine 30 762 mm. positioning of conditioning rings on 12. Lightweight frame having clean func- lap plate. tional lines giving ease of handling and Lapping Plate Motor 

Completely sealed Roller Bar Bearings access to all working parts. Compound Pump Motor ,; giving extensive trouble-free life. 13. Adjustable vibration absorption feet. Electrical Supply Available

One of the three conditioning rings. 220/380/440 volts

Work table closely fitting and adjust- 3-phase, 50 cycles able vertically to height of lap plate For capacity of this size Lapmaster Weight of Machine Nett 264 lbs. 119 kgs. to enable difficult parts to be slid on use 12 columns in capacity chart and or off. increase by 40 Gross Weight approx. 320 lbs. 145 kgs. LAPMASTER 48 KEY TO ILLUSTRATION SPECIFICATION

10-gallon capacity abrasive tank in the 7. Illuminated start button for lap plate Lapping Plate Outside Dia. 48 1218 mm base of machine with built-in electric and abrasive pump. Lapping Plate Inside Dia. 13 328 mm pump and agitator which thoroughly Conditioning Ring Inside Dia. 17 429 mm 7a.Illuminated stop button for lap plate mixes abrasive and vehicle and feeds Conditioning Ring Outside Dia. 20 505 mm and abrasive pump. the compound to the orifice block. Number of Conditioning Rings 4 Lapping Plate Face Width 19? 493 mm

Lockable main switch on electrical

The compound is fed via the four Height of Machine 46 1168 mm control box door. orifice blocks through interchangeable Working Height 39 991 mm jets 3 allowing a wide range of feeds 9. One of the four conditioning rings. Width of Machine 56 1422 mm to be selected to suit all requirements. Length of Machine 64 1621 mm

One of the four adjustable yokes which The compound is then delivered by the Tank Agitator Motor ? allow the position of the conditioning track wires 4 onto the lap plate. ring to be altered to control flatness. Lapping Plate Motor 7i Abrasive Pump Motor 1/16

Automatic time clock for setting de- 11. Access to main motor and gear box. Electrical Supply Available sired length of lapping cycle. Gear box equipped with special large 220/380/440 volts taper roller bearings to ensure a rigid 3-phase, 50 cycles

Illuminated start button for abrasive support of the lap plate and vibration- Shipping Weight gross 10,976 lbs. 4977 kgs tank agitator. free running. Shipping Weight net 10,220 lbs. 4635 kgs The above can be supplied with Pneumatic Lifts if required.

KEY TO ILLUSTRATION SPECIFICATION

Electric agitator motor which thorough- she lap plate at any predetermined Lapping Plate Outside Dia. 36 914 mm ly mixes the abrasive and vehicle position beneath this plate. Lapping Plate-Inside Dia. 7 177 mm contained in the tank below. 10. Access to oiling points to main bearings. Conditioning Ring-Inside Dia. 14 367 mm

Switch controlling the agitator motor. 11. Machine is supported on a cast-iron Conditioning Ring Outside Dia. 16 418 mm and lap plate. pedestal of cone-shaped height for the Number of Conditioning Rings 3 operation. Lapping Plate Face Width 16 418 mm

Rigid lap support bearing.

The automatic timing clock for setting Height of Machine 62 1578 mm the desired lapping cycle. ; F. nпιг, : To enable compound Working Height 36 914 mm grades to be changed without loss of 5. The separated lap plate beneath. Width of Machine 44 1111 mm time and material in cleaning down

Beneath this cover is the solenoid con- the machine, the agitator tank can be Length of Machine 66 1700 mm