vr MANUFACTURING COMPANY Tha Rockwell Bulldtng Pittsburgh, Pm.

P M 448-01-651-0001

DATED 1111 $1542

DELTA RADIAL DRILL PRESS DRILLS TO CENTER OF 32" CIRCLE

The new tdid drill press possesses all of the basic fea- tures of rhe popular Delta 1 I" Drill Press. Added to its advantages of flexibility and capacity, the new Delta Radial Drill Press is fat "superior" to conventional type drill presses or ro similar machines costing four or five times more.

After removing your #ll-280 R U & l Drill Press from the carton, place the base, vertical oolumn and table sssembb on a Delta NO. 50-821 sted stand or any otber suitable level surface. The base should be faakened to the stand or work bench using three 5/16 inch round head stove bolts. Remove the vertical column clamp assembly Fig. 1 from the tee bracket. Place the head, motor plate, and fee bracket assembly on the vertical column. Reglace the clamp assembly, taking care to reassemble in the same order. When the motor is in- stalled and tb motor pulley and V-Belt are assembled, it is necessary to move the b a d bo taka up belt slack. The head Fig. 8 (25) is s ~ u r e d by two set screws ( 2 ). At the same Mme, the head should be set perpendlcuIar to the table surface. Check t h b setting by means of a drlll h the chuck and a square off the table surface. This adjustment should be ~erformed&ith the plunger locator (12) engsged in the milled slot'in the horizontal column (9). This can be checked by nvticing tb scribed line .on the column opgosite the milled slot. This line w i l l correawnd with the zero mark on the scale (15) when the plunger is engaged.

SELECTING THE MOTOR We recommend a Delta No. 62-413 1/3 hp, AC, 115

volt, 60 cycle, 1725 rpm motor. When selecting a motor irom cmy other source, be

sure that 1 t is capable at taking end &.rust and that it is protected against loss .of lubricant when operated in h e vertical position, Use a constant sped 1725 rprn mator. Do not excaed

this speed, as higher rates will shorten the life of the spindle bearings.

The four wliey steps give spindle speeds of 700, 1250, 2400, and 4700 rpm when a I725 rpm motor is used.

P U U ~ E ~ AND UE~T The No. 985 motor pulley furnished with this drill

press has %-inch bore, It will fit the Delta motor recorn- mended,

MOTOR HORIZONTAL PULLEY

flu-

VERTICAL

ASSEMBLY

Figurn 1

IIYSTALUM WE MOTOR Attach the motor to the mounting bracket in the

aal position, with the shaft upwctrd, using the mniuge blts SP-808 with washers and nuts. The bracket 19 slotted to receive the &inch hrne motor recommended above; some other motors may require spedal mount h q arranqements. Do not tighten the bits permansntly until the belt has been lined up.

Slip the motor pulley No. 985, with the smallest step downward, onto the motor shalt. Make sum that the set screws SP-@I e n m e the flat of the shaft, and tight- en hem firmly. Install the drive b l t over correspond- ing steps of the motor and spindle pulleys. Ths motor should run d o ~ e when viewed from

above. If it runs the wrong woy, reverse its rotation accodinw to the manufacturer's d-ns furnished on motor name plate.

Place a straight edge across the top of the motor pulley to check the elevaiiion wfth resgsct to the spindle gulley. Raise or lower the motor Ltr the slots of the rnountIng bracket to make the pullem level. Keep the m o t a shaa vertical; :tbm is some MY In the slots, which might pemlt bhe motor to tilt slightly. Tighten

the motor bolts permanently when the alignment is cor- rect. Check with the straight edge. The belt will wear rapidly if the pulleys are out of line. The belt should b e just tight enough ko prevent slip

ping. Excessive tension wil l reduce the life of belt, pulleys and bearings. The correct tension is such that the belt can be flexed about one inch out of line midway between pulleys, using finger pressure.

POWER CONNECTIONS Before connectins the mator to the power line, be

sure that the electric current is of the same characteris- tics as stamped on the motor name plate.

Do not connect the motor to a circuit which will be overloaded. If an extension c o d is used, it must have adequate capacity. All line connections should make good contact. Running on low voltage will injure the motor.

ANGLE DMlflNC Disengage the p l u w r (12) ftom the column slot and

loosen the horizontal column clamp. Tilt the head and column sssy. right or left using the scribed line on horizontaI column (9) as a guide in selecting the angle desired on the calebrated scale (15). Tighten the horizontal column clamp securely. When the drilling operation is completed return the scribed line on the column to read zero on the scale. The plunger w i l l then engage the mlumn, resetting the head for vertical drilling.

LUBRKATION Apply a few drops of light machine oil to the spindle

bearings once or twice a month, The oil holes in the front of the quill near ~ t s ends are accessible when it is run down and clumped. The lower hole feeds ihe thrust bearing SP-5330 In addition to the lower spindle bear- lnq. The spindle pulley bearing is sealed and needs no lubrication.

Lubricate the surface of ihe quill occasionally, by applying a drop or two of oil inside the head casting. Also oil the quill rack, clock spring, pinion where it enters the head casting. upper end of the spindle above the pulley, flat surfaces of the stop rod and inter- ior of the chuck.

To allow free movement of the horizontal column apply e casting of white vaseline.

DEPTH COHfROL Maxrmum quill travel of thls drill press is 3% mches.

The knurled nuts DP-274 on the stop rod HDP-I 13 may be set to stop.the drlll at any lesser depth. They can be locked when a number of holes are to be dnlled tc the same depth.

OUILl CLAMP To clamp the quill in any convenient position, tight-

en the lock bolt DP-11 on the front of the head. Avoid clamping too tightly, and be sure to release the quill fully before operating it, so that the accurately ground surfaces will not be damaged.

Clamping the quill is necessary in operations such as routing; it is also convenient when oiling and in meas- 'uring to set the stop nuts for depth control, and when changing spindles. The clamp handle may be adjusted to stand in a n y

convenient posltion when tight, by shifting the hexagon nut DP-223 in its socket. The handle should hang down- ward when loose.

SPINDLE RETURN SPRING A OJUS~MEN~ The quill should operate Iree!y and return instantly

from any drillinq position, but without slamming the stop collar tqo hard against the head casting. The re- turn sprinq DP-232-S is adjusted at the factory for aver- age conditions; it may need tightening when some of the heavier spindle accessories or tools are used.

Turn the clock spring cuse counter-clockwise to wind the spring tighter, clockwise to loosen it. Adjustment may be made Y4 turn at a time, by engaging succes- sive notches of the case over the two anchor lugs on the left side of the drill press head. In adjusting the spindle return spring, proceed us follows:

Loosen the hexaqon nuts SP-1227 on the Ieft end of the.pinion shaft and back them off about Ya inch from the springr case, for clearance. Grip the case firmly, to hold the spring tension while pulling the case away from the lugs: rotate the case ?4 turn and slip the next pair of notches over the lugs. Keep the case against the head casting, so that the lugs hold the spring tension while you test the quill action and take a new grip. When the des i rd action has been obtained, push the case firmly against the head and make sure that b t h lugs are fully engaged. Turn the inner hexagon nut against the spfinq case lightly, not tight enough to cause bindinq. Lock it in this position by means of the outer nut, using two wrenches to jam them together.

To remove the clock spring, take off he hexagon nuts, release the spring tension entirely, and slip the cuse off of the pinion shaft. When installing the spring, be careful to engage the flat inner end into the slot of the shaft.

CMA NGlNG SPINDIES To remove the spindle, run the quill down until the

set collar HDP-107-S above the quill is accessible through the opening in the head. Opening is covered with name plate which has to be removed. Clamp the quill in this position. While holding the spindle to avoid dropping it, release the set screw SP-201 with Allen Wrench to loosen the set collar. Swing the table to one side and raise the quill to the top of its stroke; there will be plenty of clearance for lowering the spindle out of the bearings.

Reverse the above procedure when instolling the spindle, observing these precautions: Be sure that the spindle is passed through the flber washer DSS-77 and the set collar HDP-107-S a s the upper end comes through the quill. Rotate the spindle to enter the splines into the pulley. Tighten the set screw against the solid surface of the spindle, not into a spline groove, to avoid damage.

To eliminate all end play in the spindle, clamp the table at suitable height and lower the spindle against it with moderate pressure while clamping the quill. Push the set collar down against the quill while tightening the set screw. This method removes slack between thrust collar, thrust bearing and quill.

QUlll The quill travels in the ground seat of the hmd cast-

ing. These parts will remain accurate indefinitely if kept clean and lubricated according to instructions.

Any play which might develop between head and quill after considerable use can be taken up by part- ially tightening the lock bolt Dl?-11. If the quill needs replacement, order the item HDP-102-S.

A hog ring HDP-I05 holds the thrust M g SP-5330 into the lower end of the quill. When replacement is necessary, pry out the hog ring and install the new bearing with the narrow opening to the bttom.

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Whtm *w the r&itkk9 *at *a# rempW i b i s t t z p d m ~ - ~ ~ d ~ t h e & i % l B o ? & r i n

, b plaoe, T i a b Ih 01- nu q 6 ~ & to b$d b y & -

wahmel3i h f & sI1pfitg, but & e v e -: which &ht Wmm &ecc@i. Qbmm fhe gap, cadon whera r e m m the ahp mkr. h e i h ~ ~ 1 8 q , ~ w & e ~ E o d ~ . n ~ ~ o n h d g h t d & of ofehmd iy that *t wya@ thrfthw &a. KWP We will as as b.m*, will wf, a0

t h a t a n ~ d & W ~ b t w n ~ ~ ~ f o b 4ed casting, Thh f8 mgedalty im@dEmt w h h mhg, d i n g , hupiw, and for other opemilom-M w h w tha side @f the iaol does the wwk Do not run the qaiU. &m kr, m& tfim *&: ratb81 ruw the table to bring .the work as ciow 9 130ssMe to t h a , M .

SPHHbU PUILEY BEARlm R~laceraeirt d the pulley bearing will nat

Be necessary until thel mmErIne has had a perid of heavy me, To check 'he bah mxiicii W & M a i" so the pulley will run idle; if tf t a*&l* and nrns with nmnoiss be& the ~ W h g due to &a blt. the b d n g b ~Qi1 ln sod &l&tIbL To r Iuce the k t t h q I take off the spindle plilley

~ M ~ % P ~ Y B - s ~ w i & h tbe hexqqon hmd cup ~ D P + % ~ : B m a ~ t o f ~ h & , ~ d ~ ~ puby u p w d qut, af the ~ ~ g , Remove retaher plate DPh2?8 born tke inside of the pd+ and p s s the old MQ out of 'the plluey. hWll a ba#Mg SP-5373 and ~~~e tk garb accord- b Rg. 6. In rnc*rDbca thw~pul l~ , h t e r h e h e r mce d the bearha so that the -Bed hole m w b the hob in '&B he& -9, end ttshten it into position by xpwns d the ww DP-27B.

I ~ig, 1. 13autw Bit, Plgwood WIe. Powel a d P o ~ m tw BwtBIqb

Routing to s patWm or template Ts illustrated in Fig. 1 and 3. This is the groper method when the shupe of the work m+ the use of a fence hpcdble. Cut a full size patterm from thfn stock, usinB: the sw1l aaw. Such puttern is shown in Fig. 2. Tack the @em to the underside of the work. D f l a hole in the w d m e b , using the muter bit and drive a do@ of the m e dcfmetef M o dm hole to project slightly less than the tbichem ef the gaiten. Lay the work over the dowel and rout the face d the work to tbe desired depth, ushg thb dowel to h i t travel of the work The result will bs ,an e m copy of the pattern.

The ,wbrk muat be held steqdy while drilling; any liltingp twistins or shfifng rersu'lfii not only in a rough hole, but dm hcrmes drill' bt&cage. For fkxt work, . lay the piece on a d e n h e and hold t firmly down mainst the table, ubwin~: the hits to- p-t ,it horn W n h w . t h e w is of irremlar &apeand cam mi be kafd flnt an the table, it should be mcudy b i & w aad acmped

- ROUTING a For rouiinw, growing, carwing, and mdihq - the

No, 974 spindle wfth ,%-itrch boleh h w n Iri Fig, 2. h- s~rt the bit into he & p W e t o full Wth, ,emd clamp it

b*m hexuwn aQ&& amm@ again& #a a d. EQUW bits with IAIAlircb shank are mail&ecln five &SS, b m !4 to %-inch #&meter.

A

Use thushigh& winale epmd fw router 0i8erdb~; Wwrt ihe work a ~ a b t ' a fence whenever-possibb, go that tt fs. riot twist&d out of the handa when eauqM h$ fie deep flutm of oftlne bit.: When Bartjikg a cut, feed doyp islowly to the .&six& den& 'hm the m k , &en damp the quill to rngintdn the same de&,lover the @R@B be r d ~ t d

The work sheuld be advcm~d th&t &i push QO~U~- &<,by the ;cutting of the bit i~ mainst the a- tiori d bed Wiih the f e w h .$lie usual Wtiog hW thbwork* tbfEl ~m llxd the fwd should be ham left lo ristt,,

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IORIMG IU WOO0 Twist dds, dthcruqh intended for metal &uimg, may

also b used for boring holes h wood However, mach- ine spur bits are qeneraliy preferred,fo~ worklng in woad; they cut a square-bgttom hole and me designed for removal of wood chips. Do not use hand bits which have a screw ifp; at drill press speeds they turn Into the wood so rupidly as to lift the ~k ofi the a l e uq# whirl it. E

9

FQX throwh brim, line up W e ~o thd the bit will &ter the ~ n i m hote, to muid damage. a

MORTISIS The mortrshg attachmef~t No. $76 is a h e a-

verti-1 line on the front of the column cn! a mah& sary for acmmtely cut tin^ martism d various width mark on the tubk bracket, rsa that the tuble can be and length. It consists of a k m e w M is manaed b clamped in center pagftion at my height.

Feed slowly when he -bit 1s @ b u t b cut thrprlgh the weed, 'b p r m l splintwing the botom face. Use a scrap p5ece of wood for a haw Mock under the work; this helps to mduce splfntertng atld protects the point of the bi4.

SANDIN6 Qna- ni the special uses d thb d d i p m 4~ in scsndhq

the ~uifa#es of -8n M meid W S , Uu8bdd h Fig, 4 %ding dmms of various shes I 1 fl6-inch diameter by 2% inches Ions to 3 by 3 bches me m i l - able. T h b drums have a patented rubber cyshiond cote feature which permits we af interahomgerable abrasive deevas of vadous ma&.@. We offer garnet s k v e s for sanding wood md alumhum oxide for niiatgls.

U s e the No. 974 spindle for them sanding cahlms. The smallest has a 1/2 inch shank to fit directly ~ I O the

mount on the drill press tuble, n fence, holddowns ad chisel holder. The spindle Wh %-inch hole, No. 974 k used h hold the mortising bib. Tha ,btfmhment is ad- justable for size of s& cmd location of cut.

Hdow Wels a d bits are wail* in four S W s , from !4 16 % inch Any dcW~d width d length of mortise can be made by owrlapping cuts.

C o n v d n of fhe &dl prw for mortisins Is made by instding No. 974 spindle and attaching the chid holder on the in phce of ihe r e d m stop ~011ar DP-270. w i n g s me used to hold the mortising bits in fhe aplndle. Complete instructions for rnortIshg opem tipmi are given h the handbook, and are also included In the instruction sheet which is funbhed with the attMmmt.

. +- w. S. sa d 3 . b %am? O u ~ s n . caw ard *tam

spinde; the larger drums have a % In& hoje and se @CT%-VS ' 3 ~ -attaching them by mecms of a short piece >o SHAPING Y2 inch steel rod, Cat. No, 11-834. ahaper. The rngximum spindle speed of 47m rgm is suf-

Threeinch sanding drums sho.dd be at 1,250 ficient for smooth cuts. A wide selection ,of 3hp s h w rpm, smaller dmms at higher speda. To utilize the full attern, such as shown h Fig, 5, -&lab1 Therse face ~f the d m , mount a Qfi drill PmS cutters h m a 5./l&inch hole to mount on the special

Cut a hole the board, s1ighfl~ 1-a than the ,pin+ No. 977, They mcry also b carried by the Na. drum, Run the drum down into the hde as shown in g q spspdle when the d Q p h NO. 978 is . the photopraph, and clamp the a l l . Ths abrasive Do not aterngt to use ' l ager shaper cutters on this sleeve d l fhen a h d blow the work tQ cut W ~ ~ I Y dt.U1 pmsa; ohly he small 3-lip m ~ e m with 5116-inch ~ C F Q S S &e enfirs face. hole muy be m d e l y on thh rnbrehhe.*

The fence may be uosd as a guide when sandlnp flat The mead tpbl. plow a fwflaers for surfaces. Bolts, pivot pins (br tom~lutm batend to the

shpa rork *amp*d wfth the ahpa tabla w e usehl for w e d work. S M f4xW help to ~mduce acmmte msults and prded the operalor. AI- *02 tm attaehme* ways fwd iha work a d n s t the rotation of her drum, to lMO* g83.11 T- -%: prevent jaramins. The plywodi table

A d d use QL exmsim pmsure ~~~ bble, with the edge of t& ~m~lood mle .s side h s t the sphdle and m s . Abrdve 8ww imd ,th. oolnmn as pouibh TMs wsitIOn sleeves mmove material by the cuytlnq actfon of the grit ~ffective operation dwends upon the con& tyge *lOwa ior s U ~ o ~ m and ske of grit for the materid and the prugec Q.um Cutt~rs must be m~unted on the spindle with lips fa0 sped. When the sleeve becornea wbm or huded, dis- fag to be left when the regalcrr drilling gosition is used. qpd it and ndinsttrll 'a ew me. C Feed of the wmk must be from left to right in this case.

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