Sewing Machine Resources - Sewing Mall

 

Machine of the Month
August 1999


Brother DB2-DD7100-413

Single needle direct drive lockstitch sewing machine with automatic thread trimmer.

This is the most up-to-date single needle sewing machine with a built in servo motor which is integrated with the machine head.

The Brother DD7100 has everything that a sewing factory needs. Whereas previously the motor was installed underneath the work table, it is now built into the machine head, so that the sewing machine is now direct-driven, without needing a belt. Its new, sleek shape represents a new age in machine design.

Machine head with built-in motor

  • No V-belt, Less losses, save energy (approximately 25% compared to conventional models).
  • Better and cleaner working environment.
  • Easy installation (Eliminated installation of belt cover, motor and bobbin winder.

Adoption of a dry-head method

  • The adoption of a dry-head tank lubrication method means that maintenance has been greatly simplified. An oil pan is no longer used, and there is no longer any need to worry about oil staining the material.
  • The oil level can be checked easily through a sight glass.
DB2-DD7100 -XX1 -XX3 -XX5
Stitch type

Lockstitch

Lockstitch

Lockstitch

Needles

DBx1NS#9
DPx5NS#9

DBx1 #11
DPx5 #11

DBx1 #22
DPx5 #22

Max. stitch length (mm)

4.2

4.2

5

Height of presser foot (mm)

Manual 6
Knee 13

Manual 6
Knee 13

Manual 6
Knee 13

Applicable materials

Thin

Medium

Heavy

Needle bar stroke (mm)

29

31

35

Thread take-up stroke (mm)

57.4

57.4

61

Type and height of feed dog (mm)

4 rows
0.8

4 rows
0.8

4 rows (rough)
1.2

Max. Speed (spm)

4,000

5,000

3,500

 

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