Brushless DC-Servomotors Series 1028 ... B

2 Pole Technology

Key Features

Nominal voltage:

6 ... 12 V

Rated torque up to:

1.68 mNm

No-load speed up to:

33600 min⁻¹

Stall torque up to:

9.72 mNm

Diameter:

10 mm

Length:

28.1 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	1.08 Ω
Efficiency, max.	η_max.	73 %
No-load speed	n₀	32300 min⁻¹
No-load current	I₀	0.121 A
Stall torque	M_H	9.72 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	5426 min⁻¹/V
Back-EMF constant	k_E	0.184 mV/min⁻¹
Torque constant	k_M	1.76 mNm/A
Current constant	k_I	0.568 A/mNm
Slope of n-M curve	Δn/ΔM	3329 min⁻¹/mNm
Terminal inductance, phase-phase	L	24 µH
Mechanical time constant	τ_m	1.9 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1803 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	4.37 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	33600 min⁻¹
No-load current	I₀	0.065 A
Stall torque	M_H	9.22 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2825 min⁻¹/V
Back-EMF constant	k_E	0.354 mV/min⁻¹
Torque constant	k_M	3.38 mNm/A
Current constant	k_I	0.296 A/mNm
Slope of n-M curve	Δn/ΔM	3653 min⁻¹/mNm
Terminal inductance, phase-phase	L	87 µH
Mechanical time constant	τ_m	2.1 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1711 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	1.08 Ω
Efficiency, max.	η_max.	73 %
No-load speed	n₀	32300 min⁻¹
No-load current	I₀	0.121 A
Stall torque	M_H	9.72 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	5426 min⁻¹/V
Back-EMF constant	k_E	0.184 mV/min⁻¹
Torque constant	k_M	1.76 mNm/A
Current constant	k_I	0.568 A/mNm
Slope of n-M curve	Δn/ΔM	3329 min⁻¹/mNm
Terminal inductance, phase-phase	L	24 µH
Mechanical time constant	τ_m	1.9 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1803 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	4.37 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	33600 min⁻¹
No-load current	I₀	0.065 A
Stall torque	M_H	9.22 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2825 min⁻¹/V
Back-EMF constant	k_E	0.354 mV/min⁻¹
Torque constant	k_M	3.38 mNm/A
Current constant	k_I	0.296 A/mNm
Slope of n-M curve	Δn/ΔM	3653 min⁻¹/mNm
Terminal inductance, phase-phase	L	87 µH
Mechanical time constant	τ_m	2.1 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1711 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	1.08 Ω
Efficiency, max.	η_max.	73 %
No-load speed	n₀	32300 min⁻¹
No-load current	I₀	0.121 A
Stall torque	M_H	9.72 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	5426 min⁻¹/V
Back-EMF constant	k_E	0.184 mV/min⁻¹
Torque constant	k_M	1.76 mNm/A
Current constant	k_I	0.568 A/mNm
Slope of n-M curve	Δn/ΔM	3329 min⁻¹/mNm
Terminal inductance, phase-phase	L	24 µH
Mechanical time constant	τ_m	1.9 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1803 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	4.37 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	33600 min⁻¹
No-load current	I₀	0.065 A
Stall torque	M_H	9.22 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2825 min⁻¹/V
Back-EMF constant	k_E	0.354 mV/min⁻¹
Torque constant	k_M	3.38 mNm/A
Current constant	k_I	0.296 A/mNm
Slope of n-M curve	Δn/ΔM	3653 min⁻¹/mNm
Terminal inductance, phase-phase	L	87 µH
Mechanical time constant	τ_m	2.1 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1711 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	1.08 Ω
Efficiency, max.	η_max.	73 %
No-load speed	n₀	32300 min⁻¹
No-load current	I₀	0.121 A
Stall torque	M_H	9.72 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	5426 min⁻¹/V
Back-EMF constant	k_E	0.184 mV/min⁻¹
Torque constant	k_M	1.76 mNm/A
Current constant	k_I	0.568 A/mNm
Slope of n-M curve	Δn/ΔM	3329 min⁻¹/mNm
Terminal inductance, phase-phase	L	24 µH
Mechanical time constant	τ_m	1.9 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1803 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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	4.37 Ω
Efficiency, max.	η_max.	72 %
No-load speed	n₀	33600 min⁻¹
No-load current	I₀	0.065 A
Stall torque	M_H	9.22 mNm
Friction torque, static	C₀	0.06 mNm
Friction torque, dynamic	C_V	4.62 ·10⁻⁶ mNm/min⁻¹
Speed constant	k_n	2825 min⁻¹/V
Back-EMF constant	k_E	0.354 mV/min⁻¹
Torque constant	k_M	3.38 mNm/A
Current constant	k_I	0.296 A/mNm
Slope of n-M curve	Δn/ΔM	3653 min⁻¹/mNm
Terminal inductance, phase-phase	L	87 µH
Mechanical time constant	τ_m	2.1 ms
Rotor inertia	J	0.0622 gcm²
Angular acceleration	α_max.	1711 ·10³rad/s²
Thermal resistance	R_th1/R_th2	6.6 / 42.4 K/W
Thermal time constant	τ_w1/τ_w2	4.2 / 152 s
Operating temperature range		-20 ... 100 °C
Winding temperature, max.		125 °C
Housing material		aluminium, black anodized
Mass		9.4 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