35mm Dia x 21mm Length BL3521 Slotless BLDC Motor

Specifications

Series No: BL3521-          –               –  P    8
No.

Testing Item

Tested Values

Unit

1

Nominal voltage

UN

12

 

 

 

 

V

2

Terminal resistance, phase to phase

R

9.09

 

 

 

 

Ω

3

Output power

P2max

3.38

 

 

 

 

W

4

Efficiency

ηmax

53

 

 

 

 

%

5

No-load speed

no

4200

 

 

 

 

rpm

6

No-load current

Io

0.1

 

 

 

 

A

7

Stall torque

MH

30.77

 

 

 

 

mNm

8

Friction torque

MF

2.52

 

 

 

 

mNm

9

Speed constant

kn

378.69

 

 

 

 

rpm/V

10

Back-EMF constant

kE

2.64

 

 

 

 

mV/rpm

11

Torque constant

kM

25.22

 

 

 

 

mNm/A

12

Current constant

kI

0.04

 

 

 

 

A/mNm

13

Slope of n-M curve

Δ n/ ΔM

136.51

 

 

 

 

rpm/mNm

14

Mechanical time constant

τ m

11.48

 

 

 

 

ms

15

Rotor inertia

J

8.03

 

 

 

 

gcm2

16

Angular acceleration

αmax

38.32

 

 

 

 

103rad/s2

17

Sensor

 

Hall Sensor

 

18

Driver

 

DR2404

 

19

Weight

 

65

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

P2opt

2.76

 

 

 

 

W

27

Efficiency

ηopt

53

 

 

 

 

%

28

Speed

nopt

2998

 

 

 

 

rpm

29

Load Current

Iopt

0.45

 

 

 

 

A

30

Operating Torque

Mopt

8.81

 

 

 

 

mNm

 

Outline Drawing – Motor Only

Outside Drawing(BL3521)

VLUU L210 / Samsung L210

 

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