Brother FD3-B251 User manual

FD3−B251, B252 1/23
2000.7
FD3-B251 B252
Cylinder Bed Bottom Covering Stitcher
Cylinder Bed Top And Bottom Covering
Stitcher
Specifications
FD3 - B25 2 -021-3 / / /
A B C D
DDevice
No accessories
TC1 Air-type tape cutter
TC3 Solenoid-type tape cutter
ATC1 Automatic tape cutter (Stitch number
type)
TFV Automatic tape feeder (Vertical)
TFH Automatic tape feeder (Horizontal)
PM1 Pulse motor drive top metering device
* Built in–075 specification, PM1 can not be
attached to the machine after purchase.
BSpecifications
011 Plain stitching
021 Tape attaching
033 Covering (4 rowdifferential feed dog)
035 Covering (3 row adjustable differential
feed dog)
051 Hem stitching (The guide on the front
cover)
053 Hem stitching (The guide on the needle
plate)
061 Elastic hemming (Withpuller)
071 Elastic lace attaching (With top metering
and right knife)
075 Elastic lace attaching (With pulse motor
drive top metering and right knife)
0X1 Hem stitching (With left knife)
AModel
1Bottom coveringstitcher
2Top and bottom covering
stitcher
CNo. of needles / Needle
gauge
12 needles
3.2 mm
22 needles
4.0 mm
32 needles
4.8 mm
42 needles
5.6 mm
52 needles
6.4 mm
63 needles
4.8 mm
73 needles
5.6 mm
83 needles
6.4 mm

FD3−B251, B252 2/23
2000.7
Specifications
2-Needle 3-Needle
Stitch pattern Stitch pattern
Sub-
class Application
Gauge
No. B251 B252 Gauge No. B251 B252
-011 Plain stitching
-1
-2
-3
-4
-5
-6
-7
-8
-021 Tape attaching
-1
-2
-3
-4
-5
-6
-7
-8
-033 Covering
(4 row differential feed dog)
-3
-4
-5
-6
-7
-8
-035* Covering (3 row adjustable differential feed
dog) - - - -7
-8 -
-051
-053
Hem stitching
-051: Guide front cover attaching
type
-053: Guide needle plate
attaching type
-2
-3 -7 -8
-061 Elastic hemming w / puller -1 -2
-3 - - -
-071 Elastic lace attaching w / top
metering right knife
-1
-2
-3
-4
-5
-7
-8
-075 Elastic lace attaching w/top metering with pulse motor right
knife
-1
-2
-3
-4
-5
-7
-8
-0X1 Hem stitching w/left knife -2
-3 -7 -8
* With –035 specification, the center dog of the differential feed dog can be adjusted up and down.
* The raised type table is a standard for –035 specification.

FD3−B251, B252 3/23
2000.7
Height of
presser foot
(mm)
Needle size Stitch length
(mm) Needle bar stroke (mm) Differential
feed ratio
(mm) B25
1B25 2
Max. speed
(rpm)
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 6,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 6,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 6,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 -5.0 6,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 6,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 33.4 0.6 - 1.4 7.0 6.0 4,500
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 5,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 5,000
UYX128
#70
(#65 - #90) 1.0 - 4.2 31.0 0.6 - 1.4 7.0 5.0 5,000
Gauge No.
Gauge No. No. of needles No. of threads Gauge (mm)
-1 23 or 4 3.2
-2 23 or 4 4.0
-3 23 or 4 4.8
-4 23 or 4 5.6
-5 23 or 4 6.4
-6 34 or 5 4.8
-7 34 or 5 5.6
-8 34 or 5 6.4

FD3−B251, B252 4/23
2000.7
Optional device
TC1 Air-type tape cutter Tape cutter device set airParts
Voltage Tape attaching <021> Elastic lace attaching <071, 075>
For Japan S28466-001 S28467-001
For export S28466-002 S28467-002
TC3 Solenoid-type tape cutter Tape cutter device set solenoidParts
Voltage Tape attaching <021> Elastic lace attaching <071, 075>
For Japan S28462-001 S28463-001
For Japan S28462-003 S28463-003
For export 110 V S28462-002 S28463-002
For export 220 V S28462-004 S28463-004
For export 230 V S28462-006 S28463-006
For export 240 V S28462-007 S28463-007
For export 380 V S28462-008 S28463-008
For export 415 V S28462-009 S28463-009
ATC1 Automatic tape cutter ATC device set solenoidParts
Voltage Tape attaching <021> Elastic lace attaching <071, 075>
For Japan S28464-001 S28465-001
For Japan S28464-003 S28465-003
For export 110 V S28464-002 S28465-002
For export 220 V S28464-004 S28465-004
For export 230 V S28464-006 S28465-006
For export 240 V S28464-007 S28465-007
For export 380 V S28464-008 S28465-008
For export 415 V S28464-009 S28465-009
* When ATC1, TC1, or TC3 is used, a special needle plate is necessary. Refer to page 23 “Needle plates for ATC1,
TC1, and TC3”.

FD3−B251, B252 5/23
2000.7
TFH Automatic tape feeder <Horizontal>
Parts
Voltage <021> Horizontal tape feed set
For Japan S11259-200
For Japan S11259-201
For export 110 V S11259-202
For export 220 V S11259-203
For export 230 V S11259-204
For export 240 V S11259-205
For export 380 V S11259-206
For export 415 V S11259-207
TFV Automatic tape feeder <Vertical>
Parts
Voltage <071, 075> Vertical tape feed set
For Japan S11258-200
For Japan S11258-201
For export 110 V S11258-202
For export 220 V S11258-203
For export 230 V S11258-204
For export 240 V S11258-205
For export 380 V S11258-206
For export 415 V S11258-207
Push button switch set
Part name Part code Q’ty
Push button switch set S18962-001 1
* When PM1 device is used, this set can be attached and used instead of the knee switch.

FD3−B251, B252 6/23
2000.7
Joint box assy
Part name Part code Q’ty
Jointbox assy S18854-001 1
* Use this for wiring when using many devices together.
Box set plate (B) assy
Part name Part code Q’ty
Box set plate (B) assy S18852-001 1
* Use this when hanging the boxes of ATC1 and PM1 under the table.

FD3−B251, B252 7/23
2000.7
Air tube joint
Ref.
No. Part name Part code Q’ty
2-1 Elbow union S04896-000 1
2-2 T –union S28469-000 1
2-3 Triple joint (3) S28470-000 1
2-4 Triple joint (4) S28471-000 1
2-5 Triple joint (5) S28472-000 1
* Use this when using more than one air-driven device together.
Knee lifter device
Ref.
No. Part name Part code Q’ty
63 Knee lifter deviceassy 155196-409 1
64 Screw 4.1×25 032422-505 4
65 Chain assy S28357-001 1
* When used on the machine with the right knife specification (-071, -075), this enables you to stop and restart the
operation of the cloth knife at any place during sewing.

FD3−B251, B252 8/23
2000.7
Special parts to use when using spun thread or cotton thread
Ref.
No. Part name Part code Q’ty
1Guide base S28941-001 1
2Washer 105161-004 1
3Screw, pan SM3.57-40×6 062670-612 1
4Thread guide (M) holder S28942-001 1
5Screw, pan SM3.18-40×5 062660-512 2
6Thread guide (M) S28943-001 3
7Set screw, socket (CP) SM3.18 146427-001 3
8Needle guard, BH S28483-101 1
----- Instruction manual S91251-262 1
* If there is a big difference among right, center, and left needle thread loop size, this thread guide (separate type)
is effective in preventing stitch skipping.
* This needle guard, BH is effective in preventing stitch skipping caused by unwanted left needle backward
movement.
* For attaching the parts listed above, refer to the instruction manual also listed above.

FD3−B251, B252 9/23
2000.7
Synchronizer
Ref.
No. Part name Part code Q’ty
1Synchronizer #17-2 J80347-001 1
3Synchronizer guide S28963-001 1
4Set screw, socket (CP) SM4.37 014680-622 1
* When using the synchronizer, use the motor and V belt listed below.
Motor
Single-phase MD-601R
3-phase MD-611R
V-belt
Semi-submerged type table M 36
Raised type table M 40

FD3−B251, B252 10/23
2000.7
Conversion parts for installing the table
* For table dimensions and installation, refer to the instruction manual supplied with the machine.
Raised type →Semi-submerged type
Ref.
No. Part name Part code Q’ty
27 Head plateassy S28830-001 2
28 Bolt, M8×55 211964-001 4
29 Nut, 1 M8 021080-106 4
30 Washer, spring 2-8 028080-242 4
31 Washer, plain M8 025080-236 4
Semi-submerged type →Raised type
Ref.
No. Part name Part code Q’ty
37 Rubber cushion pin S28441-001 4
38 Retaining ring, U5 S28442-001 4
39 Washer, plain M6 025060-236 4
40 Washer, spring 2-6 028060-242 4
41 Nut, 1M6 021060-106 4
53 Sub belt cover S28444-001 1
54 Screw, oval M5.5×20 100666-002 3
55 Washer, plain S 5.56 025750-132 3