CONTENTS |
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ISPECIFICATIONS,........................................................ |
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IMECHANICAL DESCRIPTIONS I·.......... |
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II) Upper shaft and needle bar mechanism . . . . . . . . . |
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IZ]Lower shaft and rotary hook mechanism . . . . . . . . |
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~Upper feed mechanism . . . . . . . |
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II]Presser foot mechanism . . . . . . . |
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ISTANDARD ADJUSTMENT I·.............................................. |
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7 |
IIJAdjusting feed timing . . . . . . . . . |
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IZ]Adjusting timing between needle and rotary hook |
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~Adjusting presser foot height . |
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IIJAdjusting feed dog height . . . . |
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rn:JAdjusting feeding foot and presser foot . . . . . . . . . |
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9 |
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<Alternative up and down movement of feeding and presser foot> 9 |
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<Feeding foot and presser foot height> . 0 0 . 0 |
•••••••• 0 •• 0 . 0 0 ... |
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9 |
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<Adjusting feeding foot front and rear position> |
0 ••• 0 ••••• 0 ... |
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9 |
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<Adjusting feeding foot feed> .... 0 •••• 0 0 •••••• 0 ••• 0 |
••••• 0 • |
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9 |
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II)Synchronizer {082-8798) . . . . . . |
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[l]Replacing fixed and movable knives {082-8798) . . |
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'OTHER, ....... .- ....................................................... |
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[!]Sewing with synthetic thread . . |
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IZ1Sewing with vi nylon thread . . . . |
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~Attaching presser foot lifter set |
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IIJAttaching material end sensor . . |
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14 |
From the library of: Superior Sewing Machine & Supply LLC
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DB2-B797 |
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DB2-B798 |
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Application |
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Thick material |
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Thick material |
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Sewing speed |
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2000spm |
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2000spm |
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Sewing length |
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0-Smm |
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0-9mm |
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Height of presser foot |
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14mm |
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15mm |
(knee lifter) |
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Height of presser foot |
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7.5mm |
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Smm |
(presser bar lifter lever) |
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Rotary hook |
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Double sized |
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Double sized |
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Lubrication |
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Manual lubrication |
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Manual lubrication |
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Needle |
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DPx 17#23 (39mm) |
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DPx 17#23 |
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Weight of machine head |
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30kg |
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30kg |
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Thread take-up stroke |
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73mm |
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73mm |
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Needle bar stroke |
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34mm |
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38mm |
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Presser foot stroke |
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4.5mm |
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4.5mm |
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Feeding foot stroke |
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2-4.5mm |
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2.2-4mm |
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Height of feed dog |
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1.2mm |
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1.2mm |
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Durability |
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Thread take-up and needle |
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Thread take-up and needle |
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bar crank have bearings. |
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bar crank do not have |
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bearings. |
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Upper feed rock lever uses |
Upper feed rock lever uses |
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stud screws. |
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taper threads. |
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From the library of: Superior-Sewing2- Machine & Supply LLC
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