Series No: BL2640-          - IE -               -  P    2

No.

Testing Item

Tested Values

Unit

1

Nominal voltage

U_N

6

6

V

2

Terminal resistance, phase to phase

R

2.2

1

Ω

3

Output power

P_2max

3.6

8.1

W

4

Efficiency

η_max

55

60

%

5

No-load speed

n_o

6180

7700

rpm

6

No-load current

I_o

0.18

0.31

A

7

Stall torque

M_H

22.06

40.15

mNm

8

Friction torque

M_F

1.56

2.19

mNm

9

Speed constant

k_n

1102.78

1353.25

rpm/V

10

Back-EMF constant

k_E

0.91

0.74

mV/rpm

11

Torque constant

k_M

8.66

7.06

mNm/A

12

Current constant

k_I

0.12

0.14

A/mNm

13

Slope of n-M curve

Δ n/ ΔM

280.18

191.77

rpm/mNm

14

Mechanical time constant

τ _m

12.76

8.74

ms

15

Rotor inertia

J

4.35

4.35

gcm²

16

Angular acceleration

α_max

50.71

92.30

10³rad/s²

17

Sensor

Hall Sensor

18

Driver

DR3002IE

19

Weight

80

g

20

Operating temperature range

-30 ～+85

21

Commutation

Electronically commutation

22

Ball Bearing

NMB & EZO

23

Housing material

Aluminum, black anodized

24

Magnet material

Sintered Nd-Fe-B

25

Direction of rotation

Electronically reversible

The Operating Data For η max of Customer's Specifications

26

Output Power

P_2opt

2.78

5.79

W

27

Efficiency

η_opt

55

60

%

28

Speed

n_opt

4537

5903

rpm

29

Load Current

I_opt

0.86

1.64

A

30

Operating Torque

M_opt

5.86

9.37

mNm