Model No.

Main Performance 

Rated Voltage 

No Load

At Maximum Efficiency

At Stall

Speed

Current

Speed

Current

Torque

Output

Eff.

Current

Torque

V

r/min

A

r/min

A

g.cm

W

%

A

g.cm

FT-280SA-3340

1.9 CONST

7,850

0.35

6,349

1.39

31.1

1.9

71.9

6.6

163

FT-280SA-4523

1.25 CONST

9,100

0.6

7,300

2.5

27.0

2.02

64.6

10.2

140

FT-280SA-18170

12.0 CONST

11,700

0.07

10,082

0.44

35.6

3.85

72.9

2.7

255

FT-280SAT-20156

12.0 CONST

12,000

0.135

10,244

0.615

47.0

4.99

67.5

4.2

336

FT-280SAT-18140

12.0 CONST

13,500

0.11

11,348

0.58

43.0

5.02

72.2

3.05

270

FT-280SAT-3739

2.3 CONST

13,500

0.36

7,746

1.51

30.9

2.46

71.0

6.3

160

FT-280SAT-21145

12.0 CONST

12,500

0.11

10,774

0.69

51.1

5.65

68.5

4.3

370

FT-280SAT-09445

12.0 CONST

4,000

0.046

2,984

0.14

25.4

0.78

47.7

0.4

100

Basic Structure of Chengfang Motors

• 2-pole stator
• Sr ferrite permanent magnet
• 3, 5, 7, 8, 9, 12,16 slots armature
• Silicon-steel lamination with epoxy coating
• High-carbon steel shaft
• Cu-Ag alloy commutator
• Copper-graphite brushes
• Be-Cu leaf-brush commutating system
• SECD round / flat type housing
• SECD end cap / glassfiber reinforced PA6/6 end cap
• Cylinder / self-aligning Cu-Fe alloy sintered bushes
• 155^oC (class F) magnet wire

Customerized Options

• Leadwires with connector / pins
• EMI suppression components
• PTC or thermostate protection
• Built-in AC/DC rectifier
• Built-in cooling fan
• Multiple output shaft
• diamond knurls, straight knurls, D-cut, stepped shaft
• Shaft-mounted gears, essentric gears, belt pulleys
• Stainless steel (SS304, SS420) shaft
• Ball bearing
• Cage-brush commutating system
• Precious metal brush / commutator
• Hall encoder
• Low-cogging torque design
• 180^oC (class H), 200^oC (class C) magnet wire
• -40^oC ~ 220^oC bearing lubricant
• Neodymium magnets