Career Press Supplier
Career Press Supplier

Brushless DC-Flat Motors Series 4221 ... BXT R

External rotor technology, without housing

Key Features
Nominal voltage:
18 ... 48 V
Rated torque up to:
134 mNm
No-load speed up to:
6070 min⁻¹
Diameter:
42 mm
Length:
21.2 mm
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 4221G018BXTR
UN : Nominal voltage : 18 V |MN : Rated torque up to : 122 mNm |n0 : No-load speed up to : 5670 min⁻¹ |Ø : Diameter : 42 mm |L : Length : 21.2 mm
Series 4221G024BXTR
UN : Nominal voltage : 24 V |MN : Rated torque up to : 127 mNm |n0 : No-load speed up to : 5960 min⁻¹ |Ø : Diameter : 42 mm |L : Length : 21.2 mm
Series 4221G048BXTR
UN : Nominal voltage : 48 V |MN : Rated torque up to : 134 mNm |n0 : No-load speed up to : 6070 min⁻¹ |Ø : Diameter : 42 mm |L : Length : 21.2 mm

Values at 22° and nominal voltageValue
Nominal voltageUN 18 V
Terminal resistance, phase-phaseR 0.46 Ω
Efficiency, max.ηmax. 88 %
No-load speedn0 5670 min⁻¹
No-load currentI0 0.181 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 320 min⁻¹/V
Back-EMF constantkE 3.13 mV/min⁻¹
Torque constantkM 29.8 mNm/A
Current constantkI 0.0335 A/mNm
Slope of n-M curveΔn/ΔM 4.93 min⁻¹/mNm
Terminal inductance, phase-phaseL 396 µH
Mechanical time constantτm 3.56 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 169 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 10000 min⁻¹
Number of pole pairs 7
Hall sensors digital
Magnet material NdFeB

Values at 22° and nominal voltageValue
Nominal voltageUN 24 V
Terminal resistance, phase-phaseR 0.74 Ω
Efficiency, max.ηmax. 87 %
No-load speedn0 5960 min⁻¹
No-load currentI0 0.186 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 253 min⁻¹/V
Back-EMF constantkE 3.95 mV/min⁻¹
Torque constantkM 37.7 mNm/A
Current constantkI 0.0265 A/mNm
Slope of n-M curveΔn/ΔM 4.97 min⁻¹/mNm
Terminal inductance, phase-phaseL 664 µH
Mechanical time constantτm 3.59 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 177 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 10000 min⁻¹
Number of pole pairs 7
Hall sensors digital
Magnet material NdFeB

Values at 22° and nominal voltageValue
Nominal voltageUN 48 V
Terminal resistance, phase-phaseR 2.6 Ω
Efficiency, max.ηmax. 88 %
No-load speedn0 6070 min⁻¹
No-load currentI0 0.074 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 127 min⁻¹/V
Back-EMF constantkE 7.87 mV/min⁻¹
Torque constantkM 75.2 mNm/A
Current constantkI 0.0133 A/mNm
Slope of n-M curveΔn/ΔM 4.4 min⁻¹/mNm
Terminal inductance, phase-phaseL 2550 µH
Mechanical time constantτm 3.18 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 201 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 10000 min⁻¹
Number of pole pairs 7
Hall sensors digital
Magnet material NdFeB

Values at 22° and nominal voltageValue
Nominal voltageUN 18 V
Terminal resistance, phase-phaseR 0.46 Ω
Efficiency, max.ηmax. 88 %
No-load speedn0 5670 min⁻¹
No-load currentI0 0.181 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 320 min⁻¹/V
Back-EMF constantkE 3.13 mV/min⁻¹
Torque constantkM 29.8 mNm/A
Current constantkI 0.0335 A/mNm
Slope of n-M curveΔn/ΔM 4.93 min⁻¹/mNm
Terminal inductance, phase-phaseL 396 µH
Mechanical time constantτm 3.56 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 169 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 10000 min⁻¹
Number of pole pairs 7
Hall sensors digital
Magnet material NdFeB

Values at 22° and nominal voltageValue
Nominal voltageUN 24 V
Terminal resistance, phase-phaseR 0.74 Ω
Efficiency, max.ηmax. 87 %
No-load speedn0 5960 min⁻¹
No-load currentI0 0.186 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 253 min⁻¹/V
Back-EMF constantkE 3.95 mV/min⁻¹
Torque constantkM 37.7 mNm/A
Current constantkI 0.0265 A/mNm
Slope of n-M curveΔn/ΔM 4.97 min⁻¹/mNm
Terminal inductance, phase-phaseL 664 µH
Mechanical time constantτm 3.59 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 177 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 10000 min⁻¹
Number of pole pairs 7
Hall sensors digital
Magnet material NdFeB

Values at 22° and nominal voltageValue
Nominal voltageUN 48 V
Terminal resistance, phase-phaseR 2.6 Ω
Efficiency, max.ηmax. 88 %
No-load speedn0 6070 min⁻¹
No-load currentI0 0.074 A
Friction torque, staticC0 2 mNm
Friction torque, dynamicCV 5.63 ·10⁻⁴ mNm/min⁻¹
Speed constantkn 127 min⁻¹/V
Back-EMF constantkE 7.87 mV/min⁻¹
Torque constantkM 75.2 mNm/A
Current constantkI 0.0133 A/mNm
Slope of n-M curveΔn/ΔM 4.4 min⁻¹/mNm
Terminal inductance, phase-phaseL 2550 µH
Mechanical time constantτm 3.18 ms
Rotor inertiaJ 69 gcm²
Angular accelerationαmax. 201 ·10³rad/s²
Thermal resistanceRth1/Rth2 3 / 14.5 K/W
Thermal time constantτw1/τw2 5 / 630 s
Operating temperature range -40 ... 100 °C
Winding temperature, max. 125 °C
Mass 127 g
Direction of rotation electronically reversible
Speed up tonmax. 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 Umot >UN.

Characteristic curves of motor
Characteristic curves of motor (4221G018BXTR)
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 Umot >UN.

Characteristic curves of motor
Characteristic curves of motor (4221G024BXTR)
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 Umot >UN.

Characteristic curves of motor
Characteristic curves of motor (4221G048BXTR)
Planetary Gearheads
FAULHABER GPT
32GPT HT Series  by FAULHABER
Series 32GPT HT
High Torque
42GPT Series  by FAULHABER
Series 42GPT
High Torque
Drive Electronics
Speed Controllers
SC 2804 S Series  by FAULHABER
Series SC 2804 S
2-Quadrant PWM configurable via PC
SC 5004 P Series  by FAULHABER
Series SC 5004 P
4-Quadrant PWM configurable via PC
SC 5008 S Series  by FAULHABER
Series SC 5008 S
4-Quadrant PWM configurable via PC

Download

pdf
Datasheet
pdf
Technical Information
zip
3D-CAD Files

Application note

pdf
AN 163 - Digital Hall Sensors
pdf
AN 183 - Equivalent DC-current in FAULHABER SC and MC
pdf
AN 190 - Selection of a third-party motor driver
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
FAULHABER BXT Series 4221 ... BXT R by FAULHABER
Your Choice
Selected Variant
Series 4221G018BXTR
External rotor technology, without housing
Key Features
Nominal voltage: 18 V
Rated torque up to: 122 mNm
No-load speed up to: 5670 min⁻¹
Diameter: 42 mm
Length: 21.2 mm
Selected Variant
Series 4221G024BXTR
External rotor technology, without housing
Key Features
Nominal voltage: 24 V
Rated torque up to: 127 mNm
No-load speed up to: 5960 min⁻¹
Diameter: 42 mm
Length: 21.2 mm
Selected Variant
Series 4221G048BXTR
External rotor technology, without housing
Key Features
Nominal voltage: 48 V
Rated torque up to: 134 mNm
No-load speed up to: 6070 min⁻¹
Diameter: 42 mm
Length: 21.2 mm

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