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11

ABRASIVE BELTS - THEIR SELECTION AND USE

Delta supplies a wide range of belts for use on your Finishing Machine. These belts are recommended for a wide range
of work on wood, metals, plastics and other materials. However, when a large amount of production work of one kind
is to be done, it is best to call in a coated abrasive specialist for specific recommendations.

All materials may be worked on a dry belt. But for professional quality or for production work a low melting point grease
should be used for cooler cutting, better finish, and for longer belt life. Even coarse belts will "load" when grinding
aluminum dry, and so a lubricant should always be used for this material. To a varying degree, this is true of other non-
ferrous metals like soft brass and zinc.

A grease stick is often applied to the belt to prevent "loading" of the belt on softer materials especially aluminum. When
grinding steel or some kinds of plastic, the grease stick is often used to prevent over-heating of the work piece. Many
times a single belt is used for both stock removal and for finish, just by lubricating one half of the belt with light grease
for stock removal and the other side or half of the belt with a heavy grease for polishing to bring out a good finish. This
can be done only when the parts are very small and need not be moved across the face of the belt.

When an abrasive belt smaller than 6" is desired, the 6" belt can be split. This can be done by turning the belt inside
out and with a knife or other sharp instrument cut a slot in the belt at the desired width. Then proceed to tear the belt.

CAUTION: ONLY TEAR THE BELT A FEW INCHES AT A TIME ONE WAY THEN REVERSE THE TEARING ACTION.
THIS METHOD WILL REDUCE THE TENDENCY OF THE BELT TO UNRAVEL.

For certain applications, a mist coolant attachment (not supplied by Delta) will be helpful. If the use of a mist coolant
causes the Abrasive Belt to slip on the lower drive pulley, this can be corrected by using a "tire" which can be
homemade by wrapping the pulley with a piece of coated abrasive belt. The grit is, of course, turned to the outside and
cement should be used sparingly to avoid lumps under the "tire."

ACCESSORIES

A complete line of accessories is available from your Delta Supplier, Porter-Cable 

• 

Delta Factory Service Centers,

and Delta Authorized Service Stations. Please visit our Web Site 

www.deltamachinery.com

for a catalog or

for the name of your nearest supplier.

WARNING:

Since accessories other than those offered by Delta have not been tested   

with this product, use of such accessories could be hazardous. For safest operation, only 
Delta recommended accessories should be used with this product.

PARTS, SERVICE OR WARRANTY ASSISTANCE

All Delta Machines and accessories are manufactured to high quality standards and are serviced by a network of Porter-
Cable

• 

Delta Factory Service Centers and Delta Authorized Service Stations. To obtain additional information regarding

your Delta quality product or to obtain parts, service, warranty assistance, or the location of the nearest service outlet,
please call 1-800-223-7278 (In Canada call 1-800-463-3582).

Two Year Limited Warranty

Delta will repair or replace, at its expense and at its option, any Delta machine, machine part, or machine accessory which
in normal use has proven to be defective in workmanship or material, provided that the customer returns the product
prepaid to a Delta factory service center or authorized service station with proof of purchase of the product within two
years and provides Delta with reasonable opportunity to verify the alleged defect by inspection. Delta may require that
electric motors be returned prepaid to a motor manufacturer’s authorized station for inspection and repair or replacement.
Delta will not be responsible for any asserted defect which has resulted from normal wear, misuse, abuse or repair or
alteration made or specifically authorized by anyone other than an authorized Delta service facility or representative. Under
no circumstances will Delta be liable for incidental or consequential damages resulting from defective products. This
warranty is Delta’s sole warranty and sets forth the customer’s exclusive remedy, with respect to defective products; all
other warranties, express or implied, whether of merchantability, fitness for purpose, or otherwise, are expressly
disclaimed by Delta.

Printed in U.S.A.

Summary of Contents for 31-552

Page 1: ...right 2001 Delta Machinery To learn more about DELTA MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 800 223 7278 In Canada call 1 800 463 3582 6 Abrasive Belt Finishing Machine shown with optional enclosed steel stand and electricals ...

Page 2: ...ry to get caught in moving parts Nonslip footwear is recommended Wear protective hair covering to contain long hair 12 SECURE WORK Use clamps or a vise to hold work when practical It s safer than using your hand and frees both hands to operate tool 13 DON T OVERREACH Keep proper footing and balance at all times 14 MAINTAIN TOOLS IN TOP CONDITION Keep tools sharp and clean for best and safest perfo...

Page 3: ...e 10 DO NOT sand pieces of material that are shorter than 7 in length or thinner than 1 32 11 PROVIDE ADDITIONAL SUPPORT at table height when sanding large work pieces 12 SUPPORT ALL SANDING WORKPIECES with a table or additional support at table height Curved work on an outer sanding drum is the only exception 13 PREVENT THE WORKPIECE FROM CONTACTING THE SANDING BELT before starting the machine 14...

Page 4: ...nding conductor These connections should be made by a qualified electrician WARNING IN ALL CASES MAKE CERTAIN THE RECEPTACLE IN QUESTION IS PROPERLY GROUNDED IF YOU ARE NOT SURE HAVE A QUALIFIED ELECTRICIAN CHECK THE RECEPTACLE SINGLE PHASE INSTALLATION If the motor on your machine is wired for 115 voIt single phase the power cord is equipped with a plug that has two flat parallel current carrying...

Page 5: ...ened with kerosene do not use acetone gasoline or lacquer thinner for this purpose After cleaning cover the unpainted surfaces with a good quality household floor paste wax Fig D Fig D MINIMUM GAUGE EXTENSION CORD RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES Ampere Total Length Gauge of Rating Volts of Cord in Feet Extension Cord 0 6 115 up to 25 18 AWG 0 6 115 25 50 16 AWG 0 6 115 ...

Page 6: ... drive belt is shipped on the arbor pulley of the machine and must be inserted down through the opening A The disc end of the machine is to be positioned on the same end of the stand that the switch B Fig 4 is located Line up the four holes on the base of the machine with the four holes C in the top of the stand Place a 3 8 flat washer on a 3 8 16x3 hex head screw D Fig 5 two are shown insert scre...

Page 7: ...y loosening four mounting nuts two of which are shown at K If necessary the motor mounting bars F can be repositioned on two mounting posts J NOTE MAKE CERTAIN BOTH PULLEYS ARE KEPT IN ALIGNMENT WHEN ADJUSTING BELT TENSION Correct belt tension is obtained when there is approximately one inch deflection in the center span of the belt using light finger pressure IMPORTANT BE CERTAIN TO TIGHTEN ALL M...

Page 8: ...t tension Correct tension is determined by two things 1 The belt should be flat on the platen 2 The belt should be sufficiently tensioned to prevent slipping on very heavy work For ordinary work a tension just sufficient to take the curl out of the belt is recommended 3 Loosen tracking lock knob D Fig 14 and while rotating the belt F by hand tighten or loosen tracking knob E until the belt is runn...

Page 9: ... Turn the adjusting screw D Fig 16 until the table is at 90 to the platen and adjust the pointer E Fig 15 to the 0 mark on the angle of tilt scale F Fig 15 5 The same procedure is followed when adjusting the table to stop at the 45 position as shown in Fig 17 Fig 15 Fig 16 Fig 17 B A E F D C ADJUSTING POSITION OF SANDING ARM DISCONNECT MACHINE FROM POWER SOURCE The sanding arm can be positioned in...

Page 10: ...ection of rotation AFTER INSTALLING A NEW BELT THE BELT MUST BE ADJUSTED FOR PROPER TENSION AND TRACKING Fig 20 Fig 21 ADJUSTING THE PLATEN The platen A Fig 24 is set at the factory 1 32 of an inch higher than the crown of the drums B This allows the belt when properly tensioned to lay flat on the platen and eliminate stretching and bulging which might occur if the platen is not at the right heigh...

Page 11: ...side and cement should be used sparingly to avoid lumps under the tire ACCESSORIES A complete line of accessories is available from your Delta Supplier Porter Cable Delta Factory Service Centers and Delta Authorized Service Stations Please visit our Web Site www deltamachinery com for a catalog or for the name of your nearest supplier WARNING Since accessories other than those offered by Delta hav...

Page 12: ... Los Angeles 3949A East Guasti Road Phone 909 390 5555 Fax 909 390 5554 San Leandro 94577 Oakland 3039 Teagarden Street Phone 510 357 9762 Fax 510 357 7939 FLORIDA Davie 33314 Miami 4343 South State Rd 7 441 Unit 107 Phone 954 321 6635 Fax 954 321 6638 Tampa 33609 4538 W Kennedy Boulevard Phone 813 877 9585 Fax 813 289 7948 GEORGIA Forest Park 30297 Atlanta 5442 Frontage Road Suite 112 Phone 404 6...

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