craftsman six-inch metal cutting bench lathe
Contents
1. SS ae ae 2a myag MEN meas mersz SS om San SS 949 lt coma Ou AO m 1 0 8 o Bo Sp Wie 2 seam lene wean Sele oo 5 oe 9 ce Sa 505 a Tom Wn 205 22 0 Selling Selling Price Price Price PartNo Name Each PartNo Name Each PartNo Name Each BED ASSEMBLY 6 54 Carriage Bearing Plate front 85 amp 8 Change Gear Bracket 35 19 1 30 6 55 Carriage Bearing Plate rear 85 6 93 Change Gear Washer 19 150R Bench Leg right 3 80 M6 57 Carriage Gib 26 2 req each 48 19 150LA Bench Leg Left 3 00 M6 61 Ball Cronk with Handle 115 6 101 16 Compound Tumble Gear M6 328 Rack Screw 5 reqd ea 15 9 61 Spring 15 16 and 32 teeth _ 1 35 M6 62 Threading Dia 35 M 114 Lead Screw Collar left 180 HEADSTOCK ASSEMBLY 6 63 Threading Qial Body 260 M6 165 Gear Spacer 3 req 45 19 2 Headstock 11 35 M6 64A Threading Dial Pinion 185 M6 312 Wrench 185 12 14 Spindle Bushing left 50 M6 65 Threading Dial Shaft 15 12 682 lead Screw Collar right 140 19 14 Spindle Bushing right ae 6 67 Carriage Handwheel Shaft 19 22A Headstock Cover 2 CHANGE GEAR ASSEMBLY Head Spindl 13 75 moos _ Head Spindle Adjusting 75 42. OPERATING INSTRUCTIONS AND PARTS LIST FOR CRAFTSMAN SIX INCH METAL CUTTING BENCH LATHE MODEL NUMBER 101 07301 This is the Model Number of your lathe It will be found on the plate on the rear side of the bed Always mention this Model Number when communicating with us regarding your lathe or when ordering parts This list is valuable It will assure your being able to obtain proper ports service at all times We suggest you keep it with other valuable papers SEARS ROEBUCK AND nsion ASSEMBLY AND OPERATING INSTRUCTIONS FOR CRAFTSMAN SIX INCH METAL TURNING LATHE DESCRIPTION This lathe is designed to be run by a 1 1740 motor We strongly recommend motors of khanti pe shaw 60 catalogs After removing the lathe from the crate clean it thoroughly Re move the rust proof coating from the bed ways with a cloth soaked in ae legs and table boards make an ideal stand for the lathe If the lathe is to be mounted on a bench use one that is solidly built well braced and with a good dry lumber top at le amp st two inches thick The precision of any lathe regardless of size depends a great deal upon the rigidity of the base under the lathe LEVELLING THE LATHE Important See mimeographed sheets Mount the countershaft on the bench making sure the countershaft is parallel with the spindle and the pulleys are in line Have the rock
3. bed under front way About once a month apply small amount of cup grease to the rack after cleaning with kerosene and a small stiff brush 15 Piace a few drops of cit between the hendwheel and screw bearing whem ever using lathe 16 Tailstock Ram Keep the outside surface of the tailstock ram well oiled 17 Lathe Bed Ways Keep the lathe bed ways oiled at all times and free from ghips Wipe off the ways before using and cover with fresh oil Always leave a generous film of oil on the ways when the lathe is not in use The lathe should be completely covered when not in use 18 Compound Slide Screw Every time lathe is used put a few drops of oil between the graduated collar and bearing plate and on the threads 19 Cross Slide Screw Put a few drops of oil in the oil hole above the front cross slide screw bearing after removing the small screw Replace the screw This should be done every time the lathe is used Clean the cross slide screw regularly with a small stiff brush Oil the screw threads by run ning compound rest back and forth 20 Cross Slide Ways Clean regularly and apply a liberal quantity of oil te the ways whenever the lathe is used 21 Compound Slide Ways Clean regularly and apply a liberal quantity of oil to the ways whenever the lathe is used 22 Thread Dial Once a week put a few drops of oil around the rim of the thread dial 23 Back Gear Spindle Every time the back gears are used remove the
4. 99 Threading Chart 65 19 42 Index Pin 6 74 6 101 20 Change Gear 21 255 9 61 Spring 19 86 Carriage Traverse Rack 2 65 M6 101 24 Change Gear 24 155 19 78 Spindle Gear Spacer 3 6 93 Handwheel Washer 15 M6 101 32 Change Gear 32 teeth 6 79 Spindle Pulley and Back Gear 3 M6 102 Carriage Traverse Geor 1 00 2 each 65 2 88 Center 77 Taper 2 40 M6 103 Ball Crank Handle 40 5 101 36 Change Gear 3s Teeth 65 S10F 91 Ball Thrust Bearing 1 20 M 155 Threading Dial Washer lS M6 101 49 Change 40 teeth 65 6 100 32 Spindle Gear 65 M6 159 Carriage Shim 25 6 101 44 Change Gear 44 teeth 80 9 205 Oiler 2 req ea 20 160 Carriage Shim front 25 M6 101 46 Change 46 teeth 85 9 210 3 16 Ball 15 6 177 Carriage Lock Screw 2 req ea 55 M6 101 48 Change Geor 48 teeth 85 1 8 Ball 15 9 210 3 16 Ball _ 15 M6 101 52 Change Gear 52 teeth 195 Spindle Back Gear larce 3 65 M6 262 Cross Feed Ball Crank Nut 40 M6 101 54 Change Gear 54 teeth 195 Back ith Bushi 3 00 M6 101 56 Change 56 teeth 195 Back Gear Bushing 2 tea aa 235 COMPOUND REST ASSEMBLY M6 101 64 Change Gear 64 teeth Back Gear Shaft 65 6 37 Carriage Feed Screw Guard 2 req each Back Gear Eccentr 40 6 48 Gratuated Collar Back Gear Eccentric left 135 6 56 Cross Feed Gib CHANGE GEAR GUARD ASSEMBLY Back Gear Set Collar 2 rea ea 55 M 104
5. each 75 amp 428 Motor Pulley 1 45 NOTICE NOTE This is NOT All Piices Are Subject to Change Without Notice a packing slip Standard parts such as bolts nuts washers etc are not listed above as such parts can be obtained locally whe The parts shown and listed include the accessories that are not necessarily part of this tool
6. 15 M6 109 Countershaft Bearings 2 req 25 M6 45 Tailstock Ram Lock Sleeve upper 120 9 122 Honger Hinge Pis 35 Tailstock Base Gib Adjustin 0 25 LEAD SCREW AND FEED GEAR ASSEMBLY Mea 12 sees 12 80 Center No 1 Morse Taper 1 95 6 16 Lead Screw Bearing right 5 ot Takes Ge emer E M6 27 Screw Bearing left M6 39 Tool Post 7 CARRIAGE AND RACK ASSEMBLY 6 33 Tumbler Gear Bushing 46 40 Tool Post Washer 145 Carriage 2 each 9 41 Tool Post Rocker 60 Carriage Traverse Gear Bearing 155 19 35 Lead Screw 136 Tool Posi Anchor 60 Split Nut 1 pr 85 58 45 Reverse Tumbler Knob 50 6 148 Too Post Set Screw 60 Split Nut Guide 140 6 47 Spindle Gear Stud 1 45 Carriage Clamp ee 6 50 Lead Screw Gear Spacer Carriage Graduated Collor 1 03 M6 58 Reverse Gear Tumbler MISCELLANEOUS Carriage Slide Nut k M6 59 Reverse Tumbler Gear 20 teeth 55 M6 115 Combination Wrench 85 Hand Wheel with handie 60 Reverse Tumbler Gear 24 teeth 55 19 125 Motor Belt 1 25 Split Nut Lever 58 63 Plunger Spring sate A 19 127A Cone Belt 1 85 Carriage Slide Screw 6 70 Compound Gear Bushing 9 144 1 Lathe Dog 1 45 as M6 36 1 80 2 req each 28 19 365A Plate 5 7 3 85 Split Nut Cam 1 140 M6 73 Change Gear Stud Sleeve 9 385A Tool Bit 1 20 Slide Screw Beoring 1 25 2 req
7. 4 Degrees of Arc 360 180 120 90 72 60 36 30 24 18 12 6 THREADING Only the operation connected with the cutting of the 60 degree thread will be described After the work has been properly prepared for threading set the com pound rest at a 29 degree angle so that the tool bit faces in the direc tion the carriage will travel Mount the tool bolder in the tool post so that the point of the tool is exactly on the lathe center line tighten the tool post screw just enough to hold the tool holder Then use a center thread gauge to set the tool point at an exact right angle to the work Tap lightly on the back of the tool holder when bringing into po sition With the tool point at an exact right angle to the work recheck center line position and tighten tool post screw Check the change gear assembly and the tumbler gear lever so that the carriage will move in the proper direction Adjust belts for a speed of 54 Set the compound rest approximately in the center of its ways ad vance the cross feed so that it is set at 0 with the tool close to the work With the point of the tool about an inch to the right of the start of the thread advance the tool with the compound rest so that the first cut will be about 003 inch Start the lathe and engage the half nut lever on the carriage Apply plenty of lubricant to the work When the tool point has traveled the desired length along the work raise the half nut lever back out the c
8. Ball Crank Handle 2 req es 40 Eccentric Handle 80 10 226 Gib Screw Nut 3 req 115 6 28 Change Gear Guard 5 65 Back Gear Washer 4 req ea 15 M6 263 Compound Boll Crank Nut 40 M6 92 Change Gear Guard Hinge Pin 15 Back Gear Lock _ 155 6 301 Compound Rest Swivel lower 9 00 6 95 Change Gear Guard Bracket 1 55 Back Gear Plunger Spring 15 146 302 Compound Rest Swivel upper 4 35 6 96 Change Gear Guard Bracket Plate 65 Spindle Pulley Bushing 2 req ea 35 M6 303 Componnd Rest Tool Post Slide 5 15 6 157 Latch Spring 20 Bakelite Knob 25 M6 304 Compound Rest Tool Post 9 729 Knob 25 Slide Gib 5 TAILSTOCK ASSEMBLY 6 305 Compound Rest Feed 75 COUNTERSHAFT ASSEMBLY M6 5 Tailstock M6 306 Tool Post Slide Nut 85 x M6 307 Compound Rest Feed Screw 19 20A Countershaft Bracket 6 6 Tailstock Base 3 85 Thrust Plate 45 6 21 Countershaft Hanger M6 7 Tailstock Clamp 45 M6 308 Compound Rest Ball Cronk 51 52 Rockershaft Handle M6 8 Tailstock Ram 5 15 with handles 51 56 Rockershaft Handle Ball cng wih a 6 309 Compound Lock Plunger M6 76 Ranlstock Beating 01 15 2 each 20 M6 77 Rockershaft Hub nee a eee Weal ee M6 311 Compound Rest Feed M 80 Countershoft Pulley 6 42 on stock Thrust Collar 40 6 107 Countarshatt Spindle 6 44 Tailstock Ram Lock Sleeve lower 20 W44 2 Alien Wrench 1 4
9. Carbon Steel faster than a heavy one Fig 6 Cuts especially heavy ones should always be made toward the headstock this way most of the pressure is toward the live center which revolyes with the work Cutting toward the tailstock puts a heavy additional presstire the tailstock center and is quite likely to damage the center The type of tool holder and the way it is set into the work should always be such that it tends to swing away from the work on heavy cuts When cutting at an angle with the compound rest fhe tool shouid be s t at right angle to the surface of the cut not at a right angle to the cen ter line of the lathe Facing cuts represent different cutting relations and tool angles and tools should preferably be special ground for that purpose Smoother cut ting and a finer finish can be obtained generally by cutting foward the out side that is feeding from the center of work out If the tool is ground properly the point of the tool will not have to be set above or below the center line of the work but should be set on the center line The spindle pulley is provided with 60 indexing holes which may be en gaged by means of the knurled pin on the upper right end of the headstock These indexing holes are useful for such operations as spacing fluting reeding serrating sprocket and spoke spacing etc INDEXING TABLE Divisions Desired 2 3 4 5 6 10 12 15 20 30 60 No of Spaces 40 30 20 15 12 10 6 ip 4502
10. NTS OF THE CARRIAGE If any horizonta play develops between the carriage and the bed it can be taken up by screwing the four gib screws up tighter against the gib These screws should be tightened just enough to give a firm sliding fit be tween the carriage and bed Bearing plates on the carriage which bear on the under side of both the front and the back of the bed ways anchor the carriage firmly to the bed in a vertical direction The bearing plates have laminated shims for adjustment of possible wear 3 The gibs on the cross feed slide and the compound feed slide should be adjusted at regular intervals The cross feed gib should always fit snugly because the cross slide is in almost continual use 4 The ball and crank handles on the cross feed screw and the compound feed screw can be adjusted for play with the two nuts on the hubs of the handles To adjust tighten the inner nut and lock the outer nut An extremely tight fit is likely to result in a jerky feed the turning force keeps these slides firm against the screw and play in the handles does not affect the accuracy of the work A nice working snug fit is ideal 5 On the tailstock two gib screws are provided one on each nsion thereby allowing the belt to be essiy m end of the gib which regulates the tightness of the tailstock between the bed ways These two screws should be adjusted evenly so that both ends of the gib will bear against the way wi
11. en so that 32 tooth qear meshes with gear in screw position The 20 tooth gear is a spacer 3 Place 64 tooth gear and steel spacer on sleeve and mount in Position A on gear bracket with 64 tooth in front position Tighten so that 64 tooth gear meshes with 32 tooth gear in Position 4 Swing entire gear brack et upward and tighten so that the 64 tooth gear meshes TOOTH GEAR SPACER with the 16 tooth spindle Fig 3 36 threads per inch gear When setting up the gear train be sure to allow sufficient clearance be tween two meshing gears Gear clearance does notsreduce the accuracy of a thread cutting operation because all the back lash in the gears is taken up in one direction MOUNTING THE WORK Whenever practicable the work is held between centers There are two steps in mounting work between centers Locating the center points at each end of the work and countersinking and drilling the ends to accommodate the lathe centers On round work centers are usually located with either the herma phrodite caliper or the center head attachment for a steel square On the centering of square hexagon and other regular sided stock lines are scribed across the ends from corner to corner The work is then center punched at the point of intersection A little chalk rubbed over the end of the work before scribing makes the marks easily seen After the ends have been countersunk the work is mounted be tween centers Be sure that t
12. ershaft handle in off tension position when mounting the counter shaft OPERATION AND CONTROLS The following controls should be tested until the operator is thoroughly familiar with their use 1 The large handwheel on the front of the carriage propels the carriage along the bed 2 The ball crank is used for cross feeding and the two handle crank operates the compound rest Both are graduated in thousands of an inch The compound teed can be tumed in complete circle byisimply loosening the two Allen set screws and is graduated in degrees from 0 to 180 so that any angle can be cut 3 The lever on the right front side of the carriage operates the half nut mechanism When this lever is moved into the downward position it en gages the half nut with the lead screw causing the carriage to travel along the bed CAUTION Before engaging the half nut with the lead screw be sure that the square head cap screw on the right top side of the carriage is loose otherwise the carriage is locked and serious damage may result to the half nut mechanism 4 The lever with the small knob located at the headstock end of the lathe is the reverse gear tumbler lever This lever is used to reverse or stop the rotation of the lead screw Three holes are drilled in the headstock pro viding three positions for the lever The center hole is neutral and the up per and lower holes are either forward or reverse positions depending upon the gear se
13. he tail or bent portion of the lathe dog fits into the face plate slot without resting on the bottom of the face plate slot Bring the tailstock up close to the end of the stock and lock in place Turn the tailstock center into the countersunk hole and lock in such a position that the play is taken up between centers but not so tight that the work will not freely rotate PLACE PLENTY OF WHITE LEAD AT POINT OF BEARING ON TAILSTOCK CENTER Much of the work to be turned or threaded on the lathe is not of a size or shape which permits mounting between centers In such cases it is cus tomary to mount the work a face plate or hold it in chuck a devici with jaws which grips the work rigidly while it is being machined A i f only one chuck is to be purchased it should be the four jaw indepen gent chuck The four jaws are adjusted separately and are reversible so that work of any shape can be clamped from the inside or the outside Mounting work in the four jaw chuck is largely a matter of centering Determine the portion of the rough work that is to run true then clamp the work as closely centered as possible using as a guide the concentric rings on the face of the chuck dest for irueness marking the high spots with chalk rested against the tool post or a tool bit mounted in the tool post The chuck jaws should be adjusted until the chalk or tool bit con tacts the entire circumference of the work Boring operations re
14. ould be filled once a week with 5 No 10 motor oil or equivalent Ball bearing motors have a sealed in type bearing every six months the small headless screw in these bearings should be removed and a moderate quantity of auto motive cup grease forced around the bearings 4 Left and Right Headstock Bearings Oil every time the lathe is used 5 Spindle Pulley Every time the lathe is used in back gear remove the small screw in the bottom of the second of the idler pulley and oil freely Replace screw 6 Spindle Thrust Bearing Oil every time lathe is used 7 Back Gears and Change Gears A small amount of grease preferably graphite grease applied fo the gear teeth will aid in obtaining smoother more quiet operation 8 Change Gear Bearings Put few drops of oil on the change gear bear ings each time lathe is used 9 Lead Screw Bearings left and right Put few drops of oil in the oil hole of the bearing every time the lathe is used 10 Carriage Traverse Gear Bracket Every time lathe is used put a few drops of oil in oil hole on top of gear bracket on back of carriage apron 11 Carriage Handwheel Bearing Put a few drops of oil in oil hole every time lathe is used 12 Half nut Lever Bearing Put a few drops of oil in the oil hole every time lathe is used 13 Lead Screw About once a month clean the lead screw threads with kerosene and small stiff brush and apply a small amount of oil 14 Rack
15. quire only slightly different tools and methods than those fos external turning With the round tool shank parallel to the lathe center line set the boring tool into the work with the shank below the cen ter line Then by putting the cutting edge on exact center line the correct amount of back rake is provided Tke general rules for the use of the exter nal tools apply to boring tools For maximum rigidity choose the largest s possible boring tool Take several light cuts rather than a heavy one when CUTTING TOOL BITS It is wise for the unskilled worker to purchase already formed tools for the particular_ operations he wishes Fig 4 to perform Tool bits are not ex pensive and the purchase of a set Ei f these will probably prove the cheapest and most satisfactory way in the long run ANGLE OF TOOL TO WORK The angle of the cutting tool to work varies according to hard ness of the metal being cut The ac sompanying drawings show in general the pee angles to be asadi tor the different classes of metals Refer gt to these drawings before taking a cut MUE Stoel er Sas Iron until you are sure you know the Fia 5 proper angle for each metal CUTTING SPEEDS The speed a cut is taken varies according to the kind of metal being LA cut janet the Kind of cut whether roughing or finishing Brass may be n Talar aN and a light cut Cutting
16. ross feed a turn cr two and return the carriage by hand to the starting point Advance the cross feed to its original position at 0 advance the compound rest for the desired depth of cut and engage the half nut lever for the second cut All feeding is done with the compound rest Follow the same routine on all succeeding cuts RULES FOR THE USE OF THE THREADING DIAL When cutting on even numbered thread such as 8 10 12 14 etc inch engage the half nut lever when the stattonary mark on the thread ing dial is in line with any one of two opposing marks on the rotating dial When cutting any other threads 9 11 13 and 27 per inch engage the half nut lever when the stationary mark on the threading dial is in line with the same mark on the rotating dial Precautions Never disengage the half nut lever in the middle of the thread without first backing out the tool with the cross feed LUBRICATION CHART See Fig 7 NOTE Oilless Bronze Bearings are used in the headstock of this lathe and lubrication takes place by oil seepage through the porous bushing wall thus assuring a filtered lubricant DO NOT DRILL HOLES THRU THE BUSHINGS Use No 10 motor oil or equivalent throughout unless otherwise specified 1 Place a few dreps of oil on the rockershaft bearings and cam every time ike lathe is in use 2 Countershaft Bearings Oil every time lathe is used 3 Motor Bearings Sleeve type motors have two oil cups which sh
17. small screw in the center of the back gear spindle and oil freely Replace screw 24 Back Gear Eccentrics right and left Oil occasionally Fig 7 NOTE For more complete information regarding the operation of metal cutting lathes refer to the Sears Manual of Lathe Operation listed in our Catalog A complete line of accessories are available for this lathe Write for informa tion Completa information for thread cutting and coil winding operations are contained in the Threading Information booklet supplied with this Lathe HOW TO ORDER PARTS FOR CRAFISMAN METAL CUTTING BENCH LATHE MODEL NO 101 07301 All parts listed here must be ordered through any Sears Retail or Mail Order store When ordering always give the following 1 Part number in this list 3 Model number 101 07301 and which will be 2 Part name and price in this list found on the plate on the rear side of the bed TS PARTS ARE SHIPPED PREPAID 2905 or me f ae Se e A 9 lt 0 3 o0 coi gt 5
18. t up The belt tansion lever cated on the countershaft regulates the ighten the belt move the lever backward ove forward changed to the different pulley steps 6 The handwheel on the tailstock operates the tailstock vance the ram turn the handwheel in clockwise direction 7 The small lever at the top of the tailstock is the tailstock ram clamp handie It locks the ram in place when tightened Note Before attempting to move the ram loosen the ram clamp ADJUSTMENTS SPINDLE BEARING ADJUSTMENT If any looseness develops in the spindle bearings it may be removed as follows Loosen fillister head machine screw in left bearing cap one half turn Then tighten right bearing cap screw until a slight drag is felt when the spindle is rotated by hand Retighten left bearing until all loose ness disappears SPINDLE END PLAY Should end play develop remove if by tightening the collar on the end of spindle after loosening set screw Turn collar to a snug fit but not so tight that the spindle turns hard by hand Retighten set screw CAUTION Do tot confuse spindle end play for loose bearings When turning wood or using speeds over 1250 R P M loosen the bearing screws between V s and 1 4 turn A tight bearing is essential for metal turning but not satisfactory for higher speeds for wood working When changing back to lower speeds do not forget to tighten the bearing cap screws again 2 ADJUSTME
19. th the same amount of pressure The tailstock can be set over 0 for turning tapers This is done by simply adjusting the two headless screws after loosening the tailstock clamp nut PROPER CUTTING SPEEDS Spindle Speed in Revolutions per Min DIRECT CONE DRIVE Motor Belt Spindle Balt Position Position 2 3 4 COUNTERSHAFT A 365 550 820 1250 B 940 1925 2125 3225 BACK GEAR DRIVE Motor Belt Spindle Belt Position Position 1 2 ae Fig 3 54 82 122 187 B 140 287 317 481 Much of the success in metal cutting depends upon the choice of the cutting speeds Too slow a speed not only wastes time but leaves rough finish too high a speed burns the tool The chart above shows the different speeds available and the set up for each READING THE GEAR CHART To simplify gear set ups the three different gear bracket positions nave been assigned letters These designations will be found in Figure on the Threading Chart Boon SASIE Back position means the position TOWARD the headstock Front position is the position AWAY FROM the headstock representative set up is given in detail below GEAR SET UP FOR 36 THREADS PER INCH See Figure 3 1 Place 36 tooth gear on Ont position S wo stub 2 Place 20 tooth gear and 32 tooth gear sleeve and mount in Position on gear bracket with 32 tooth gear in front position Tight
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