Brother EF4-N21 User manual

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 1/31

2001.9

Overlock Sewing Machine

N series

EF4-N11

High Speed Single Needle

Overlock Sewing Machine

EF4-N21

High Speed Twin Needle

Overlock Sewing Machine

MA4-N31

High Speed Safety Stitch

Sewing Machine

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 2/31 2001.9

Overlock Sewing Machine

V series

EF4-V41A

Ultra high Speed Single Needle

Overlock Sewing Machine

EF4-V51A

Ultra high Speed Twin Needle

Overlock Sewing Machine

MA4-V61A

Ultra high Speed Safety Stitch

Sewing Machine

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 3/31

2001.9

Option parts [Models EF4-N11, N21,MA4-N31, V41A, V51A, V61A]

Model

Device N11

V41A N21

V51A N31

V61A

Stitch number control ATC1 {{{

Air suction + Thread release + Stitch number control ATC3 {{{

Automatic tape cutter Air suction + Stitch number control ATC5 {{{

Horizontal (Installed on the table) TFH {{{

Automatic tape feeder Vertical (Installed on the table) TFV {{{

For single needle SBL1 {--

Semi-auto backtack device For twin needle SBL2 - {-

Pneumatic type back suction CV1 {{ -

Pneumatictypefrontsuction CV3 {{ -

Vacuum type back suction CV4 {{ -

Vacuum type front suction CV6 {{ -

Chaincutteronlybacksuction CV7 {{ -

Verticalchaincutter

Chaincutteronlyfrontsuction CV9 {{ -

Pneumatictype CH1 {{{

Vacuum type CH2 {{{

Horizontal chain cutter Chaincutteronly CH3 {{{

Knee SW pneumatic TC1 {{{

Knee SW solenoid TC3 {{{

Tape cutter Manual SW solenoid TC5 {{{

Pneumatic foot lifter PL1 {{{

Folded edge controlling and hemming BH {--

Pneumaticaircleanerset CL1 {{{

Semi-automatic backlatch device SBL {{ -

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 4/31 2001.9

Specifications

EF4-N11- - / / /

Sub−class Stitchwidth Device

Sub-class Applications Stitchtype No.of

needles No.of

threads

(mm)

Needle

gauge

(mm)

Stitch width

(mm)

Max. stitch

length

Differential

ratio

01 -3

-4

-5

-6

-7

13-

0.9 – 3.8 0.7 – 2.0

02 -5

-6

-7 Bulky knit 13-5

70.4 – 2.4 1.1 – 3.8

03 -3

-4

-5 Blind-hemming 13-3

50.9 – 3.8 0.7 – 2.0

04 -3

-4

-5 Blind-hemming 12-3

50.9 – 3.8 0.7 – 2.0

05 -4

-5 Serging 12-4

51.4 – 5.9 0.7 – 1.3

06 -4

-5 Serging 13-4

51.4 – 5.9 0.7 – 1.3

07 -2

-3 Curing 13-2

30.9 – 3.8 0.7 – 2.0

-5 Ruffling 1 3 - 5 0.8 – 3.2 0.8 – 2.8

-5 Ruffling

with piping 1 3 - 5 0.8 – 3.2 0.8 – 2.8

10 -4

-5

-6 Taping 13-4

60.9 – 3.8 0.7 – 2.0

11 -5

-6

-7

Taping

bulkyknit 13-5

70.4 – 2.4 1.1 – 3.8

12 -3

-4

-5 Back-tacking 13-3

50.9 – 3.8 0.7 – 2.0

17 -3

-4

-5 Soft chain

stitching 13-3

50.9 – 3.8 0.7 – 2.0

··· Light-weight materials ···Heavy-Weightmaterials

··· Medium-weight materials ··· Extra heavy-weight materials

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 5/31

2001.9

EF4-V41A- - / / /

Sub−class Stitchwidth Device

(rpm)

Max. speed

(mm)

Height of

presser foot

(mm)

Pitch of feed

dog

Type of feed dog

(standard) (DC x27)

Needlesize V41A N11 Looper locus Attachment

51.63-Row11

8,500

8,000

7,000

6,700

6 2.5 3 - Row 14 8,000 6,500 H Angle knife

5 1.6 2- Row 9 8,500 7,000 S Blindhemming

ruler

5 1.6 2- Row 9 8,500 7,000 S Blindhemming

ruler

5 1.6 2- Row 14 8,500 7,000 S Serging ruler

5 1.6 2- Row 11 8,500 7,000 S

5 1.6 3- Row 11 7,500 6,500 S Ruffler

5 1.6 3 - Row 11 7,500 6,500 S Piping ruffler

51.63-Row11

8,500

8,000

7,000

6,700

HTape guide

6 2.5 3- Row 14 8,000 6,500 H Tape guide

Angle knife

5 1.6 2- Row 11 8,500 7,000 S Back-tack

5 1.6 3- Row 11 8,500 7,000 S

Over-looper locus

S ··· Standard lift

H ··· High lift

E ··· Extra high lift

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 6/31 2001.9

Specifications

EF4-N21- - / / /

Sub−class Stitchwidth Device

Sub-class Applications Stitchtype No.of

needles No.of

threads

(mm)

Needle

gauge

(mm)

Stitch width

(mm)

Max. stitch

length

Differential

ratio

22 -4

-5

-6

-7

242.2

0.9 – 3.8 0.7 – 2.0

23 -4

-5

-6

-7 Mock safety

stitch 242.2

0.9 – 3.8 0.7 – 2.0

24 -5

-6

-7 2435

70.9 – 3.8 0.7 – 2.0

25 -5

-6

-7 Mock safety

Stitch 2435

70.9 – 3.8 0.7 – 2.0

27 -5

-6

-7 Bulky knit 242.2

70.4 – 2.4 1.1 – 3.8

28 -5

-6

-7

Bulky knit

Mock safety

stitch 242.2

70.4 – 2.4 1.1 – 3.8

31 -6

-7 2436

71.2 – 5.0 0.7 – 1.4

32 -6

-7 Mock safety

stitch 2436

71.2 – 5.0 0.7 – 1.4

33 -5

-6 Ruffling 242.2

60.8 – 3.2 0.8 – 2.8

-5

-6

Ruffling

Mock safety

stitch 242.2

60.8 – 3.2 0.8 – 2.8

··· Light-weight materials ···Heavy-Weightmaterials

··· Medium-weight materials ··· Extra heavy-weight materials

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 7/31

2001.9

EF4-V51A- - / / /

Sub−class Stitchwidth Device

(rpm)

Max. speed

(mm)

Height of

presser foot

(mm)

Pitch of feed

dog

Type of feed dog

(standard) (DC x27)

Needlesize V51A N21 Looper locus Attachment

5.5 1.6 3 - Row 11 8,000 6,700 H

5.5 1.6 3 - Row 11 7,000 6,700 H

5.5 1.6 3 - Row 11 8,000 6,700 H

5.5 1.6 3 - Row 11 7,000 6,700 H

5.5 2.5 3 - Row 14 8,000 6,500 H Angle knife

5.5 2.5 3 - Row 14 7,000 6,500 H Angle knife

6 2.5 3 - Row 18 6,500 6,000 E Angleknife

6 2.5 3 - Row 18 5,500 5,500 E Angleknife

5.5 1.6 3 - Row 11 7,500 6,500 H Ruffler

Over-looper locus

S ··· Standard lift

H ··· High lift

E ··· Extra high lift

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 8/31 2001.9

Specifications

EF4-N21- - / / /

Sub−class Stitchwidth Device

Sub-class Applications Stitchtype No.of

needles No.of

threads

(mm)

Needle

gauge

(mm)

Stitch width

(mm)

Max. stitch

length

Differential

ratio

37 -5

-6 Ruffling

with piping 242.2

60.8 – 3.2 0.8 – 2.8

38 -5

-6 Ruffling

with piping 242.2

60.8 – 3.2 0.8 – 2.8

41 -5

-6 Taping 242.2

60.9 – 3.8 0.7 – 2.0

42 -5

-6 Taping

Mock safety

stitch

242.2

60.9 – 3.8 0.7 – 2.0

45 -5

-6

-7

Taping

Bulky knit 242.2

70.4 – 2.4 1.1 – 3.8

46 -5

-6

-7

Taping

Bulky knit

Mock safety

stitch

242.2

70.4 – 2.4 1.1 – 3.8

49 -5

-6 Back-tacking 242.2

60.9 – 3.8 0.7 – 2.0

57 -6

-7 Bulky knit 242.5

70.4 – 2.4 1.1 – 3.8

58 -6 Bulky knit

Back-tack 2 4 2.5 6 0.4 – 2.4 1.1 – 3.8

··· Light-weight materials ··· Heavy-Weightmaterials

··· Medium-weight materials ··· Extra heavy-weight materials

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 9/31

2001.9

EF4-V51A- - / / /

Sub−class Stitchwidth Device

(rpm)

Max. speed

(mm)

Height of

presser foot

(mm)

Pitch of feed

dog

Type of feed dog

(standard) (DC x27)

Needlesize V51A N21 Looper locus Attachment

5 1.6 3 - Row 11 7,500 6,500 H Piping ruffler

5 1.6 3 - Row 11 7,000 6,500 H Piping ruffler

5.5 1.6 3 - Row 11 8,000 6,700 H Tapeguide

5.5 1.6 3 - Row 11 7,500 6,700 H Tapeguide

5.5 1.6 3 - Row 14 8,000 6,500 H Tape guide

Angle knife

5.5 1.6 3 - Row 14 7,000 6,500 H Tape guide

Angle knife

5.5 1.6 3 - Row 11 8,000 6,700 H Back-tack

7 2.5 3 - Row 14 6,500 6,000 E Angleknife

Over-looper locus

S ··· Standard lift

H ··· High lift

E ··· Extra high lift

EF4-N11, V41A, N21, V51A, MA4-N31, V61A 10/31 2001.9

Specifications

MA4-N31- - / / /

Sub−class Stitchwidth Device

Sub-class Applications Stitchtype No.of

needles No.of

threads

(mm)

Needle

gauge

(mm)

Stitch width

(mm)

Max. stitch

length

Differential

ratio

61 -2

-3

-4

-5

252

0.9 – 3.8 0.7 – 2.0

62 -2

-3

-4

-5

242

0.9 – 3.8 0.7 – 2.0

63 -3

-4

-5

-6

-7

253

0.9 – 3.8 0.7 – 2.0

64 -3

-4

-5

-6

-7

243

0.9 – 3.8 0.7 – 2.0

65 -4

-5

-6

-7

255

0.9 – 3.8 0.7 – 2.0

66 -4

-5

-6

-7

245

0.9 – 3.8 0.7 – 2.0

67 -4

-5 Ruffling 2524

50.8 – 3.2 0.8 – 2.8

68 -4

-5 Ruffling 2424

50.8 – 3.2 0.8 – 2.8

69 -4

-5 Ruffling 2534

50.8 – 3.2 0.8 – 2.8

70 -4

-5 Ruffling 2434

50.8 – 3.2 0.8 – 2.8

71 -5

-6 Ruffling 2555

60.8 – 3.2 0.8 – 2.8

72 -5

-6 Ruffling 2455

60.8 – 3.2 0.8 – 2.8

··· Light-weight materials ··· Heavy-Weightmaterials

··· Medium-weight materials ··· Extra heavy-weight materials

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