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MF-7822

MF-7823

MF-7823U10B56

MF-7823K10B56

MF-7800 series(2-needle, top and bottom coverstitch machine)

(3-needle, top and bottom coverstitch machine)

High-speed, Cylinder-bed,

Top and Bottom Coverstitch Machine

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The machine produces seams, which match materials and thread with consistency.

Soft-seam

Well-tensed seam

Optimization of the thread take-up mechanism and top covering thread path route

Simple maintenance mechanism

The optimized thread take-up mechanism and top covering thread path route contribute to an increased stability of topcovering stitches. In addition, the machine is capable of performing sewing with a low tension applied to the thread tooffer improved responsiveness to the sewing thread.

Seams can be adjusted depending on the application or material by changing the thread path or adjusting the threadtension controller, to produce soft and low-tensed seams for inner wear or to produce high-grade well-tensed seams forouter wear.

The machine is provided with a variety of mechanisms, which have been developed in consideration of production sites.The mechanisms can be easily maintained, contributing to increased production efficiency.

The looper thread cam has been

provided with a thread wrappingprevention device. In the event thatthread becomes wrapped around thecam, the bracket can be removedwith ease.

Looper thread twining

prevention mechanism

The end face of the looper cam and

the looper thread bushing overlap soas to prevent looper thread fromtangling in the looper shaft.The prevention mechanism alsoprotects the oil seal from breakage.

Looper shaft thread tangling

prevention mechanism

The needle bar stroke can be increased

by changing the position of theeccentric pin to smoothly sew heavy-weight materials. The troublesomereplacement of parts, which isconventionally associated with needle-bar-stroke changing work, is no longerrequired.

Needle bar stroke

conversion mechanism

( )standard setting at the time of delivery: 31mm,

for sewing heavy-weight materials: 33mm

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A

BC

Comfortable working space

The machine comes with a differential-feed micro-adjustment mechanism and micro-lifter mechanism.With these mechanisms, the machine is able to sewalmost all kinds of sewing products, such asfoundations, light-weight underwear and heavy-weight fleece, increasing the number of sewing items.

The machine is applicable to an

increased variety of sewing items

A forced circulation mechanism has been introducedinto the cylinder unit to prevent sewing products frombeing stained with oil. The mechanism is effective ineliminating oil stains.

Sewing products are no longer

stained with oil

Max. sewingspeedrpm

Presser liftingamount2mm

Differential-feedratio1

Stitchlength

Needlegauge

Number ofthreads

Number ofneedles

Model No.Seams

MF-7822-U10-B48

MF-7823-U10-B56

MF-7823-U10-B64

2

3

3

4

5

5

4.8

5.6

6.4

0.93.6

0.93.6

0.93.6

1:0.91:1.8(1:0.61:1.1)

1:0.91:1.8(1:0.61:1.1)

1:0.91:1.8(1:0.61:1.1)

5

5

5

6.500

6.500

6.500

-7800

SUBCLASS

MACHINES

List of gauges

Model name

MF-7822-U10-B48

MF-7823-U10-B56

MF-7823-U10-B64

MF-7823-K10-B56

Needle clamp

13350509

13350301

13350400

13350301

Presser foot asm.

13376058

13375050

13375050

13375050

Throat plate

13354709

13354808

13351200

13352307

Main feed dog

13431200

13431200

13430103

13430707

Differential-feed dog

13433503

13433503

13432109

13432901

Commercially available gauge components can be used with no additional work.

Seams

A longer distance from machinearm to needle helps reduceoperator stress during thecovering process. In addition,the cylinder, the length of whichis ideally suited to the hemmingprocess and offers goodoperability, helps create a

comfortable working space.The machine has beendeveloped to achieve low-noiseand low-vibration operation tooffer an operator-friendly workenvironment.

Knitwear

Polo shirt

T-shirt

Covering guard (R) Part No.: 13438007Covering guard (L ) Part No.: 13438106

A=mm B=mm C=mm

U10 (universal type)

The machine is a basic model, which can be used, in a broaderrange of sewing processes, such as the hemming and coveringof T-shirts and polo shirts, and the sewing of fleece.

K10 (covering)

This model is best suited to the covering process for polo shirts,trainers, sportswear, knit outers, etc.

Basic stitch(universal type)

U10

Sweat shirt

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MF-7823U10B56

Stitch type

Max. sewing speed

Stitch length

Differential-feed ratio(switchable)

Needle gauge

Needle

Lift of the presser foot

Stitch pitch adjustment

Differential feed adjustment

Lubrication

Lubricating oil

Micro-lifter

Needle bar stroke converting function

Silicon oil tank for needle tip andneedle thread

Cartridge oil filterWeight of the machine head

Model name MF-7822

2-needle top and bottomcoverstitch

4.8mm

6.500rpm

0.93.6mm (stitch length can be adjusted to 4.5mm)

1:0.91:1.8 (1:0.61:1.1)

UY128GAS #9S#14S (standard #10S)

5mm (with top and bottom coverstitch),8 (with bottom coverstitch)

By dial

By micro-adjustment mechanism

Automatic

JUKI Machine Oil 18 (equivalent to ISO VG18)

Provided as standard

Provided as standard

Provided as standard

Provided as standard42kg

SPECIFICATIONS

WHEN YOU PLACE ORDERS

ApplicationFor universal

For covering

CodeU10

K10

Tonque shape ofthroat plate Code

B type (standard) B

INTERNATIONAL SALES H.Q.

Specifications and appearance are subject to change without prior notice for improvement.Read the instruction manual before putting the machine into service to ensure safety.This catalog is printed on recycle paper.

DECEMBER, 2003 Printed in Japan(TN)

8-2-1, KOKURYO-CHO, CHOFU-SHI,TOKYO 182-8655, JAPAN

PHONE : (81)3-3480-2357, 2358

FAX : (81)3-3430-4909, 4914

http://www.juki.com

Needle gauge4.8mm

5.6mm

6.4mm

Code48

56

64

For model category (23) (3-needle),needle gauge category 48 cannot be selected.

MF-7823

3-needle top and bottomcoverstitch

5.6, 6.4mm

Please note when placing orders, that the model name should be written as follows:

Code

22

23

Stitch type2-needle, top and bottom

coverstitch

3-needle, top and bottomcoverstitch

To order, please contact your nearest JUKI distributor.