Brushless DC-Servomotors Series 1226 ... B

2 Pole Technology

Key Features

Nominal voltage:

6 ... 24 V

Rated torque up to:

2.13 mNm

No-load speed up to:

29700 min⁻¹

Stall torque up to:

10.2 mNm

Diameter:

12 mm

Length:

26 mm

Advantages

High density ironless system FAULHABER winding

Digital or analog hall sensors available

Extremely smooth speed control

Sensitive positioning control

Variants:

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance, phase-phase	R	2.2 Ω
Efficiency, max.	η_max.	71 %
No-load speed	n₀	21000 min⁻¹
No-load current	I₀	0.07 A
Stall torque	M_H	7.24 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	3563 min⁻¹/V
Back-EMF constant	k_E	0.281 mV/min⁻¹
Torque constant	k_M	2.68 mNm/A
Current constant	k_I	0.373 A/mNm
Slope of n-M curve	Δn/ΔM	2925 min⁻¹/mNm
Terminal inductance, phase-phase	L	36 µH
Mechanical time constant	τ_m	4.4 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	499 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance, phase-phase	R	5.45 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	27400 min⁻¹
No-load current	I₀	0.054 A
Stall torque	M_H	8.99 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2318 min⁻¹/V
Back-EMF constant	k_E	0.431 mV/min⁻¹
Torque constant	k_M	4.12 mNm/A
Current constant	k_I	0.243 A/mNm
Slope of n-M curve	Δn/ΔM	3066 min⁻¹/mNm
Terminal inductance, phase-phase	L	85 µH
Mechanical time constant	τ_m	4.7 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	621 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	18.1 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	29700 min⁻¹
No-load current	I₀	0.031 A
Stall torque	M_H	10.2 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	1237 min⁻¹/V
Back-EMF constant	k_E	0.808 mV/min⁻¹
Torque constant	k_M	7.72 mNm/A
Current constant	k_I	0.13 A/mNm
Slope of n-M curve	Δn/ΔM	2902 min⁻¹/mNm
Terminal inductance, phase-phase	L	307 µH
Mechanical time constant	τ_m	4.6 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	677 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance, phase-phase	R	2.2 Ω
Efficiency, max.	η_max.	71 %
No-load speed	n₀	21000 min⁻¹
No-load current	I₀	0.07 A
Stall torque	M_H	7.24 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	3563 min⁻¹/V
Back-EMF constant	k_E	0.281 mV/min⁻¹
Torque constant	k_M	2.68 mNm/A
Current constant	k_I	0.373 A/mNm
Slope of n-M curve	Δn/ΔM	2925 min⁻¹/mNm
Terminal inductance, phase-phase	L	36 µH
Mechanical time constant	τ_m	4.4 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	499 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance, phase-phase	R	5.45 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	27400 min⁻¹
No-load current	I₀	0.054 A
Stall torque	M_H	8.99 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2318 min⁻¹/V
Back-EMF constant	k_E	0.431 mV/min⁻¹
Torque constant	k_M	4.12 mNm/A
Current constant	k_I	0.243 A/mNm
Slope of n-M curve	Δn/ΔM	3066 min⁻¹/mNm
Terminal inductance, phase-phase	L	85 µH
Mechanical time constant	τ_m	4.7 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	621 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	18.1 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	29700 min⁻¹
No-load current	I₀	0.031 A
Stall torque	M_H	10.2 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	1237 min⁻¹/V
Back-EMF constant	k_E	0.808 mV/min⁻¹
Torque constant	k_M	7.72 mNm/A
Current constant	k_I	0.13 A/mNm
Slope of n-M curve	Δn/ΔM	2902 min⁻¹/mNm
Terminal inductance, phase-phase	L	307 µH
Mechanical time constant	τ_m	4.6 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	677 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance, phase-phase	R	2.2 Ω
Efficiency, max.	η_max.	71 %
No-load speed	n₀	21000 min⁻¹
No-load current	I₀	0.07 A
Stall torque	M_H	7.24 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	3563 min⁻¹/V
Back-EMF constant	k_E	0.281 mV/min⁻¹
Torque constant	k_M	2.68 mNm/A
Current constant	k_I	0.373 A/mNm
Slope of n-M curve	Δn/ΔM	2925 min⁻¹/mNm
Terminal inductance, phase-phase	L	36 µH
Mechanical time constant	τ_m	4.4 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	499 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance, phase-phase	R	5.45 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	27400 min⁻¹
No-load current	I₀	0.054 A
Stall torque	M_H	8.99 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2318 min⁻¹/V
Back-EMF constant	k_E	0.431 mV/min⁻¹
Torque constant	k_M	4.12 mNm/A
Current constant	k_I	0.243 A/mNm
Slope of n-M curve	Δn/ΔM	3066 min⁻¹/mNm
Terminal inductance, phase-phase	L	85 µH
Mechanical time constant	τ_m	4.7 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	621 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	18.1 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	29700 min⁻¹
No-load current	I₀	0.031 A
Stall torque	M_H	10.2 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	1237 min⁻¹/V
Back-EMF constant	k_E	0.808 mV/min⁻¹
Torque constant	k_M	7.72 mNm/A
Current constant	k_I	0.13 A/mNm
Slope of n-M curve	Δn/ΔM	2902 min⁻¹/mNm
Terminal inductance, phase-phase	L	307 µH
Mechanical time constant	τ_m	4.6 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	677 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance, phase-phase	R	2.2 Ω
Efficiency, max.	η_max.	71 %
No-load speed	n₀	21000 min⁻¹
No-load current	I₀	0.07 A
Stall torque	M_H	7.24 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	3563 min⁻¹/V
Back-EMF constant	k_E	0.281 mV/min⁻¹
Torque constant	k_M	2.68 mNm/A
Current constant	k_I	0.373 A/mNm
Slope of n-M curve	Δn/ΔM	2925 min⁻¹/mNm
Terminal inductance, phase-phase	L	36 µH
Mechanical time constant	τ_m	4.4 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	499 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance, phase-phase	R	5.45 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	27400 min⁻¹
No-load current	I₀	0.054 A
Stall torque	M_H	8.99 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2318 min⁻¹/V
Back-EMF constant	k_E	0.431 mV/min⁻¹
Torque constant	k_M	4.12 mNm/A
Current constant	k_I	0.243 A/mNm
Slope of n-M curve	Δn/ΔM	3066 min⁻¹/mNm
Terminal inductance, phase-phase	L	85 µH
Mechanical time constant	τ_m	4.7 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	621 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	18.1 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	29700 min⁻¹
No-load current	I₀	0.031 A
Stall torque	M_H	10.2 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	1237 min⁻¹/V
Back-EMF constant	k_E	0.808 mV/min⁻¹
Torque constant	k_M	7.72 mNm/A
Current constant	k_I	0.13 A/mNm
Slope of n-M curve	Δn/ΔM	2902 min⁻¹/mNm
Terminal inductance, phase-phase	L	307 µH
Mechanical time constant	τ_m	4.6 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	677 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	6 V
Terminal resistance, phase-phase	R	2.2 Ω
Efficiency, max.	η_max.	71 %
No-load speed	n₀	21000 min⁻¹
No-load current	I₀	0.07 A
Stall torque	M_H	7.24 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	3563 min⁻¹/V
Back-EMF constant	k_E	0.281 mV/min⁻¹
Torque constant	k_M	2.68 mNm/A
Current constant	k_I	0.373 A/mNm
Slope of n-M curve	Δn/ΔM	2925 min⁻¹/mNm
Terminal inductance, phase-phase	L	36 µH
Mechanical time constant	τ_m	4.4 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	499 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	12 V
Terminal resistance, phase-phase	R	5.45 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	27400 min⁻¹
No-load current	I₀	0.054 A
Stall torque	M_H	8.99 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2318 min⁻¹/V
Back-EMF constant	k_E	0.431 mV/min⁻¹
Torque constant	k_M	4.12 mNm/A
Current constant	k_I	0.243 A/mNm
Slope of n-M curve	Δn/ΔM	3066 min⁻¹/mNm
Terminal inductance, phase-phase	L	85 µH
Mechanical time constant	τ_m	4.7 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	621 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Values at 22° and nominal voltage		Value
Nominal voltage	U_N	24 V
Terminal resistance, phase-phase	R	18.1 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	29700 min⁻¹
No-load current	I₀	0.031 A
Stall torque	M_H	10.2 mNm
Friction torque, static	C₀	0.073 mNm
Friction torque, dynamic	C_V	5.3 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	1237 min⁻¹/V
Back-EMF constant	k_E	0.808 mV/min⁻¹
Torque constant	k_M	7.72 mNm/A
Current constant	k_I	0.13 A/mNm
Slope of n-M curve	Δn/ΔM	2902 min⁻¹/mNm
Terminal inductance, phase-phase	L	307 µH
Mechanical time constant	τ_m	4.6 ms
Rotor inertia	J	0.15 gcm²
Angular acceleration	α_max.	677 ·10³rad/s²
Thermal resistance	R_th1/R_th2	7.3 / 36.6 K/W
Thermal time constant	τ_w1/τ_w2	3.2 / 207 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		13 g
Direction of rotation		electronically reversible
Speed up to	n_max.	79000 min⁻¹
Number of pole pairs		1
Hall sensors		digital
Magnet material		NdFeB

Operating Area

Recommended operation areas at nominal voltage 6 V

The diagram indicates the recommended speed in relation to the available torque at the output shaft for a given ambient temperature of 22°C.

The diagram shows the motor in a completely insulated as well as thermally coupled condition (R_th2 50% reduced).

The nominal voltage (U_N) curve shows the operating point at nominal voltage in the insulated and thermally coupled condition. Any points of operation above the curve at nominal voltage will require a higher operating voltage. Any points below the nominal voltage curve will require less voltage.

Characteristic curves of motor