Advantages

External rotor motors with very high torque

Continuous output up to 100 W

Outstanding ratio of torque to weight and size

Flat design for space-critical applications. Length range of 14 to 21 mm.

Matching optical and magnetic encoders, gearheads and controls available

14-pole construction

Variants:

Series
4221G018BXTH

Series
4221G024BXTH

Series
4221G048BXTH

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 18 V |

Terminal resistance, phase-phase | R | 0.46 Ω |

Efficiency, max. | η_{max.} | 88 % |

No-load speed | n_{0} | 5710 min⁻¹ |

No-load current | I_{0} | 0.177 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 320 min⁻¹/V |

Back-EMF constant | k_{E} | 3.13 mV/min⁻¹ |

Torque constant | k_{M} | 29.8 mNm/A |

Current constant | k_{I} | 0.0335 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.93 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 396 µH |

Mechanical time constant | τ_{m} | 3.56 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 169 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 18 V |

Terminal resistance, phase-phase | R | 0.46 Ω |

Efficiency, max. | η_{max.} | 88 % |

No-load speed | n_{0} | 5710 min⁻¹ |

No-load current | I_{0} | 0.177 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 320 min⁻¹/V |

Back-EMF constant | k_{E} | 3.13 mV/min⁻¹ |

Torque constant | k_{M} | 29.8 mNm/A |

Current constant | k_{I} | 0.0335 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.93 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 396 µH |

Mechanical time constant | τ_{m} | 3.56 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 169 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 24 V |

Terminal resistance, phase-phase | R | 0.74 Ω |

Efficiency, max. | η_{max.} | 87 % |

No-load speed | n_{0} | 6040 min⁻¹ |

No-load current | I_{0} | 0.139 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 253 min⁻¹/V |

Back-EMF constant | k_{E} | 3.95 mV/min⁻¹ |

Torque constant | k_{M} | 37.7 mNm/A |

Current constant | k_{I} | 0.0265 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.97 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 664 µH |

Mechanical time constant | τ_{m} | 3.59 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 177 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 24 V |

Terminal resistance, phase-phase | R | 0.74 Ω |

Efficiency, max. | η_{max.} | 87 % |

No-load speed | n_{0} | 6040 min⁻¹ |

No-load current | I_{0} | 0.139 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 253 min⁻¹/V |

Back-EMF constant | k_{E} | 3.95 mV/min⁻¹ |

Torque constant | k_{M} | 37.7 mNm/A |

Current constant | k_{I} | 0.0265 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.97 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 664 µH |

Mechanical time constant | τ_{m} | 3.59 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 177 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 48 V |

Terminal resistance, phase-phase | R | 2.6 Ω |

Efficiency, max. | η_{max.} | 88 % |

No-load speed | n_{0} | 6070 min⁻¹ |

No-load current | I_{0} | 0.103 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 127 min⁻¹/V |

Back-EMF constant | k_{E} | 7.87 mV/min⁻¹ |

Torque constant | k_{M} | 75.2 mNm/A |

Current constant | k_{I} | 0.0133 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.4 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 2550 µH |

Mechanical time constant | τ_{m} | 3.18 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 201 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Values at 22° and nominal voltage | Value | |
---|---|---|

Nominal voltage | U_{N} | 48 V |

Terminal resistance, phase-phase | R | 2.6 Ω |

Efficiency, max. | η_{max.} | 88 % |

No-load speed | n_{0} | 6070 min⁻¹ |

No-load current | I_{0} | 0.103 A |

Friction torque, static | C_{0} | 2 mNm |

Friction torque, dynamic | C_{V} | 5.63 ·10⁻⁴ mNm/min⁻¹ |

Speed constant | k_{n} | 127 min⁻¹/V |

Back-EMF constant | k_{E} | 7.87 mV/min⁻¹ |

Torque constant | k_{M} | 75.2 mNm/A |

Current constant | k_{I} | 0.0133 A/mNm |

Slope of n-M curve | /ΔnΔM | 4.4 min⁻¹/mNm |

Terminal inductance, phase-phase | L | 2550 µH |

Mechanical time constant | τ_{m} | 3.18 ms |

Rotor inertia | J | 69 gcm² |

Angular acceleration | α_{max.} | 201 ·10³rad/s² |

Thermal resistance | R/_{th1}R_{th2} | 3 / 14.5 K/W |

Thermal time constant | τ/_{w1}τ_{w2} | 5 / 870 s |

Operating temperature range | -40 ... 100 °C | |

Winding temperature, max. | 125 °C | |

Mass | 142 g | |

Direction of rotation | electronically reversible | |

Speed up to | n_{max.} | 10000 min⁻¹ |

Number of pole pairs | 7 | |

Hall sensors | digital | |

Magnet material | NdFeB |

Operating Area

The display shows the range of possible operation points of the drives at a given ambient temperature of 22°C.

The diagram indicates the recommended speed in relation to the available torque at the output shaft.

It includes the assembly on a plastic- as well as on a metal flange (assembly method: IM B 5).

The nominal voltage linear slope describes the maximal achievable operating points at nominal voltage. Any points of operation above this linear slope will require a supply voltage *U*_{mot} >*U*_{N}.

Characteristic curves of motor

Operating Area

The display shows the range of possible operation points of the drives at a given ambient temperature of 22°C.

The diagram indicates the recommended speed in relation to the available torque at the output shaft.

It includes the assembly on a plastic- as well as on a metal flange (assembly method: IM B 5).

The nominal voltage linear slope describes the maximal achievable operating points at nominal voltage. Any points of operation above this linear slope will require a supply voltage *U*_{mot} >*U*_{N}.

Characteristic curves of motor

Operating Area

The display shows the range of possible operation points of the drives at a given ambient temperature of 22°C.

The diagram indicates the recommended speed in relation to the available torque at the output shaft.

It includes the assembly on a plastic- as well as on a metal flange (assembly method: IM B 5).

The nominal voltage linear slope describes the maximal achievable operating points at nominal voltage. Any points of operation above this linear slope will require a supply voltage *U*_{mot} >*U*_{N}.

Characteristic curves of motor

Precision Gearheads

Planetary Gearheads

Series
38/1

Series
38/1 S

Series
38/2

Series
38/2 S

Planetary Gearheads

FAULHABER GPT

Encoders

Incremental encoder

Series
IE3-1024

magnetic Encoder, digital outputs, 3 channels, 1 - 1024 lines per revolution

Series
IE3-1024 L

magnetic Encoder, digital outputs, 3 channels, 1 - 1024 lines per revolution, Line Driver

Series
IEF3-4096

magnetic Encoder, digital outputs, 3 channels, 16 - 4096 lines per revolution

Series
IEF3-4096 L

magnetic Encoder, digital outputs, 3 channels, 16 - 4096 lines per revolution, Line Driver

Series
IER3-10000

optical Encoder, digital outputs, 3 channels, 1000 - 10000 lines per revolution

Series
IER3-10000 L

optical Encoder, digital outputs, 3 channels, 1000 - 10000 lines per revolution, Line Driver

Series
IERS3-500

optical Encoder, digital outputs, 3 channels, 250 - 500 lines per revolution

Series
IERS3-500 L

optical Encoder, digital outputs, 3 channels, 250 - 500 lines per revolution, Line Driver

Drive Electronics

Motion Controllers

Series
MC 3603 S

V3.0, 4-Quadrant PWM, with RS232, CANopen or EtherCAT interface

Series
MC 5004 P

V3.0, 4-Quadrant PWM, with RS232, CANopen or EtherCAT interface

Series
MC 5005 S

V3.0, 4-Quadrant PWM, with RS232, CANopen or EtherCAT interface

Speed Controllers

Accessories

Brakes

Your Choice

Selected Variant

Series
4221G018BXTH

External rotor technology, with housing

Key Features

Nominal voltage:
18 V

Rated torque up to:
102 mNm

No-load speed up to:
5710 min⁻¹

Diameter:
42 mm

Length:
22 mm

Selected Variant

Series
4221G024BXTH

External rotor technology, with housing

Key Features

Nominal voltage:
24 V

Rated torque up to:
112 mNm

No-load speed up to:
6040 min⁻¹

Diameter:
42 mm

Length:
22 mm

Selected Variant

Series
4221G048BXTH

External rotor technology, with housing

Key Features

Nominal voltage:
48 V

Rated torque up to:
107 mNm

No-load speed up to:
6070 min⁻¹

Diameter:
42 mm

Length:
22 mm