UnionSpecial 57700 Series Instructions For Adjusting And Operating Download Page 1 | Manualshive

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From the library of: Superior Sewing Machine & Supply LLC

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Summary of Contents for 57700 Series

Page 1: ...G No 131L CLASS 57700 ADVANCED HIGH SPEED FIFTY THOUSAND SERIES DIFFERENTIAL FEED FLAT BED MACHINES INDUSTRIAL SEWING MACHINES UNION SPECIAL CORPORATION C H I C AGO From the library of Superior Sewing Machine Supply LLC ...

Page 2: ...RATING LIST OF PARTS CLASS 57700 Style 57700 B First Edition Copyright 1971 by Union Special Corporation Rights Reserved in All Countries UNION SPECIAL CORPORATION INDUSTRIAL SEWING MACHINES CHIC A GO Printed in U S A 2 May 1979 From the library of Superior Sewing Machine Supply LLC ...

Page 3: ...ngle Reservoir Enclosed Positive Automatic Lubricating System Filtered Oil Return Pumps for Head and Base Needle Bearings and Bronze Bearings for Feed Bar and Feed Rocker Shafts Greased and Sealed Lateral Looper Travel Single Disc Take up Large Handwheel and Improved Belt Guard Prepared for use with Knee Press for Presser Foot Lifter Equipped with Rotary Thread Tensions Maximum Work Space to Right...

Page 4: ...er needle size is determined by the size of thread used Thread should pass freely through needle eye in order to produce a good stitch formation Success in the operation of UNION SPECIAL machines can be secured only by use of needles packaged under our brand name which is backed by a reputation for producing highest quality needles in materials and workmanship for more than three quarters of a cen...

Page 5: ... to operate To fill machine with oil remove plug screw in top cover and add oil until needle of oil gauge is in yellow baBd marked FULL Use a straight mineral oil of a Saybolt viscosity of 90 to 125 seconds at 100 Fahrenheit Maintain oil level in OPERATE position and add oil when needle is in yellow band marked LOW The machine is automatically lubricated and no oiling other than keeping the main r...

Page 6: ...required Run machine slowly for several minutes to distribute oil to the various parts Oil may be drained from main reservoir by removing plug screw C Fig 2 located below the cloth plate at front of the machine NOTE Looper avoid and feed lift eccentrics receive oil thru the mainshaft so when assembling be sure oil holes in the eccentric lines up with oil holes in mainshaft when spot screw is in ti...

Page 7: ...SYNCHRONIZING LOOPER AND NEEDLE MOTIONS Insert the looper in the looper rocker and turn hand wheel in operating direction until the point of the looper A Fig 5 moving to the left is even with the left side of right needle B Note the height of the eye of the needle with respect to the looper point then turn hand wheel in the reverse direction until the looper point again moves to the left and is ev...

Page 8: ...d If the looper gauge is 7 32 inch for example set the looper D Fig 6 so the distance from the center ofthe right needle E to the point of the looper is 7 32 inch when the looper is at its farthest position to the right Looper gauge No 21225 7 32 can be used advantageously in mak ing this adjustment If adjustment is required loosen nut F it has a left hand thread and nut G on connecting rod H turn...

Page 9: ...N FEED DOG The main feed dog should be set to rise the depth of a full tooth or approximately 3 64 inch above the throat plate at the highest point of travel The feed dog should be centered in the slots of the throat plate at maximum feed travel Fig 9 To raise or lower the main feed dog loosen allen screw A Fig 8 and adjust the feed dog holder B to set the feed dog at specified height Retighten sc...

Page 10: ...f feed Tighten screws securely NOTE Turn machine by hand to make sure the differential feed dog has clearance through its cycle and does not contact the main feed dog at back end of its travel or the throat plate at the forward end of its travel Fig 10 SETTING THE DIFFERENTIAL FEED RATIO The differential feed ratio is set by loosening screw A Fig 10 and moving the selector slide B to the desired p...

Page 11: ...t of the rear needle guard will necessitate a check of the main feed dog height SETTING FRONT NEEDLE GUARD Set the front needle guard so that it pushes the left needle back toward the path of the looper as it moves behind the needle The looper may brush but not pick at the left needle It should be set as low as possible yet have its vertical face push the left needle until the point of the looper ...

Page 12: ...h Fig 13 THREADING Thread machine as indicated in Fig 1 and start operating on a piece of fabric Fig 14 THREAD TENSION The needle thread is to be wrapped around the rotary tension 2 1I4 times Pull the thread through the eyelets and set the left needle thread tension at 2 ounces the right needle thread tension at 2 1I 2 ounces or sufficient tension to produce uniform stitches on the under surface o...

Page 13: ... plate assembly to the top of the screw slots causes more thread to be pulled from the cones and moving the cast off plate assembly to the bottom of the screw slots causes less thread to be pulled The cast off plate assembly is set correctly when the looper thread just becomes taut as the looper reaches its extreme position to the left PRESSER FOOT PRESSURE Regulate the presser spring regulating s...

Page 14: ...9 26 14 I I I I I I I I I From the library of Superior Sewing Machine Supply LLC ...

Page 15: ...ell Nut 2 Screw for throat plate 2 Throat Plate 1 Screw for cloth plate 2 Cloth Plate 1 Screw for cloth plate 1 Screw for cloth plate 2 Cloth Plate Sliding Cover 1 Screw 2 Screw for cloth plate 1 Folder Support Platform 1 Screw 1 Screw 2 Folder Clamp 1 Folder Support Bracket 1 Screw 2 Washer Plate 1 Folder Support Hinged Bracket 1 Screw 1 Hinge Pin 1 Hinge Bracket Spring 1 Screw 2 Throat Plate Sup...

Page 16: ...16 From the library of Superior Sewing Machine Supply LLC ...

Page 17: ...Needle Bar Head 1 Thread Guide Wire 1 Screw thread guide wire 1 Screw needle 2 Screw spot 1 Needle Bar marked EJ 12 1 Screw 4 Presser Bar Connection Guide Plate 2 Needle Thread Take up Wire 1 Needle Thread Frame Eyelet 1 Washer 1 Screw 1 Screw 2 Cast off Plate 1 Screw 2 Cast off Plate Support 1 Looper Rocker Cone Stud Nut 1 Presser Foot 1 Presser Foot Shank 1 Screw 1 Screw 1 Screw 1 Spring 1 Yield...

Page 18: ...18 From the library of Superior Sewing Machine Supply LLC ...

Page 19: ...r Support 1 Oil VVick Retainer 1 Screw 2 Screw for main feed dog 2 Main Feed Dog marked ER 1 Feed Dog Holder 1 Screw 1 VVasher 1 Rear Needle Guard 1 Needle Guard Holder 1 Screw 1 Oil VVick 2 Differential Feed Bar 1 Oil VVick 1 Differential Feed Dog marked ES 1 Screw 1 Main Feed Bar 1 Feed Dog Height Adjusting Screw 1 Bushing 2 Bushing 2 Screw 1 Link Pin 1 Set Screw 1 Driving Link Guide 1 Screw 2 D...

Page 20: ...Torque to 19 21in lbs 22 24cm kg 20 From the library of Superior Sewing Machine Supply LLC ...

Page 21: ...her 1 Locking Stud 1 Screw for link pin 1 Feed Crank Link Assembly 1 Feed Crank Link Ferrule 1 Feed Crank Link Pin 1 Oil VVick 1 Nut left hand thread 1 VVasher 1 Screw 4 Main Shaft Head Plate 1 Screw 1 Feed Crank Stud marked 1 Stitch Regulating Screw 1 Quad Ring 1 Feed Crank Stud Insert 1 Screw for take up 1 Main Shaft 1 Gasket 1 Oil Flow Regulating Screw 1 Looper Thread Take up 1 Screw 2 Looper A...

Page 22: ... you in setting up the initial inventory of spare parts An efficient inventory can only be established according to actual usage The nature of the sewing operation will determine actual usage and the completion time This data is then transferred to the permanent Machine Repair Record kept in the office Whichever system is used management now has an invaluable tool to reduce needless maintenance co...

Page 23: ...per Bags No 263 Men s Clothing No 264 Men s Women s Children s Jackets No 265 Women s Wear No 266 Women s Wear And High Fashion No 267 Corsets Girdles Brassieres No 268 Children s Wear No 269 Mattresses Slip Covers Furniture Upholstery No 271 Awnings Canopies Tents Tarps No 273 Curtains Drapes No 610 Kiipp it No 710 MCS ForMation Unit No 730 MCS Automatic Dual Underfront Shirt Hemmer No 740 MCS Au...

Page 24: ...romptly and efficiently Whatever your loca tion there is a Union Special Representative to serve you Check with him today ATLANTA GA MONTREAL CANADA BOSTON MASS TORONTO CANADA CHICAGO ILL BRUSSELS BELGIUM DALLAS TEXAS LEICESTER ENGLAND LOS ANGELES CAL LONDON ENGLAND NEW YORK N Y PARIS FRANCE PHILADELPHIA PA STUnGART GERMANY Representatives and distributors In all Important Industrial cities throug...

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