B1220N2B

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Description

1 Voltage V 7.4 6.0 5.0
2 Terminal resistance Ω 3.8 3.4 2
3 No-load speed rpm 23000 17200 17500
4 No-load current A 0.1 0.15 0.18
5 Stall torque mNm 5.3 4.9 5.8
6 Stall current A 2 1.8 2.5
7 Nominal torque mNm 1.3 1.3 1.4
8 Nominal speed rpm 15300 10800 11600
9 Nominal current A 0.57 0.6 0.78
10 Max. output power W 3.3 2.2 2.5
11 Max. efficiency % 62 50 51
12 Back-EMF constant mV/rpm 0.3 0.3 0.3
13 Torque constant mNm/A 2.9 3.0 2.5
14 KV Value rpm/V 3100 2900 3500
15 Speed/torque gradient rpm/mNm 3800 3700 3030
16 Rotor inertia gcm² 0.17 0.17 0.17
17 Weight g 9.5 9.5 9.5
18 Thermal resistance housing-ambient K/W 32
19 Thermal resistance winding-housing K/W 5.5
20 Thermal time constant motor s 190
21 Thermal time constant winding s 1.5
22 Operating temperature range °C -40~+100
23 Thermal class of winding °C 155
24 Axial play mm 0.012
25 Radial play mm 0.008
26 Axial load dynamic N 1
27 Axial load static N 25
28 Radial load at 3 mm from mounting face N 6.3
29 No. of pole pairs 1
30 Bearings 2 ball bearings
31 Commutation Sensorless
32 Protection class IP 20

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