FAULHABER 2224U006SR 6 V DC Micromotor with Precious Metal Commutation

The FAULHABER 2224U006SR is a 22 mm diameter DC micromotor from the Series 2224 … SR with precious metal commutation. This 6 V winding develops 21.1 mNm stall torque and runs at about 8,200 rpm with no load, in a nickel-plated steel housing with a 2 mm output shaft. It is a compact drive element for instruments, actuators, positioning mechanisms and battery-powered equipment where space and efficiency matter.

Technical specifications

Reading the 2224U006SR part number

The designation follows the FAULHABER scheme: 2224 gives the motor diameter (22 mm) and length class, U marks the standard winding family, 006 is the nominal voltage in volts and SR identifies precious metal commutation. The same series is listed by the manufacturer for 3, 12, 18, 24 and 36 V (003, 012, 018, 024, 036), so the voltage digits are the quickest way to confirm that the correct winding has been requested. Options are appended to the code with a hyphen, for example 2224U012SR-277.

Options printed in the data sheet include twin leads of 150, 300 or 600 mm (codes L, 4924, X4924), twin leads with an AMP 179228-2 connector (4925, X4925, Y4925), single PTFE leads of 150 mm (F) and two preloaded ball bearings (277). Sintered bearings are the standard bearing type for the motor, while the ball bearing version carries higher shaft loads.

Mechanical and thermal data

With sintered bearings the data sheet gives a maximum dynamic radial shaft load of 1.5 N and an axial dynamic load of 0.2 N at 3,000 rpm; the preloaded ball bearing version is rated 8 N radial and 0.8 N axial. Thermal resistance from winding to housing is 8.4 K/W, and the housing to ambient value falls from 22 K/W on a plastic flange to 1.5 K/W on a metal flange, so mounting on a metal flange allows noticeably more continuous torque. The speed-torque diagram in the data sheet shows the recommended operating range for each mounting condition.

Selection and compatible products

The data sheet lists matching planetary gearheads (for example 20GPT, 22GPT, 22E, 22/5 and 22/7), the IE2-1024 and IEH series encoders and drive electronics such as the SC 1801, SC 2402, SC 2804 and MC 3001 families. A 6 V winding suits battery or low-voltage supplies; check supply voltage, required torque at the operating speed and duty cycle against the rated values above before choosing the winding. Browse related drives in Electric Motors.

How the FAULHABER 2224U006SR works

A DC micromotor turns electrical current into rotation by the force between the current in the rotor winding and a permanent magnet. In the 2224U006SR, the commutation uses precious metal brushes on a commutator, which gives low contact resistance and low noise at small currents. The motor has a 22 mm nickel-plated steel housing, an NdFeB magnet and a 2 mm shaft. At 6 V it runs at about 8,200 rpm with no load and develops a stall torque of 21.1 mNm, with a maximum efficiency of 82 percent.

Where the 2224U006SR is used

• Instruments and analysis equipment.
• Small actuators and positioning mechanisms.
• Battery-powered equipment.
• Pumps and dosing units of small size.
• Test and laboratory devices that need a compact drive.

Selection checklist for the 2224U006SR

• Nominal voltage of 6 V.
• Terminal resistance of 1.95 ohm.
• No-load speed of 8,200 rpm and a maximum speed of 9,000 rpm.
• Rated torque of 4.47 mNm at the thermal limit.
• Rated current of 0.7 A.
• Torque constant of 6.95 mNm/A.
• Speed constant of 1,370 rpm/V.
• Rotor inertia of 2.7 gcm2.
• Mass of 46 g.
• Operating temperature of -30 to +85 degrees C.

Installation, commissioning and maintenance notes

Fix the motor by its front face and keep the shaft loads below the limits in the data sheet. With sintered bearings, the dynamic radial load is 1.5 N and the axial load is 0.2 N at 3,000 rpm. Choose a drive that keeps the continuous current below the rated current, and use a short start-up ramp to protect the commutation. Keep the motor clean and dry, and check for noise and heating at maintenance rounds.

Requesting a quotation for the 2224U006SR

Send the voltage, the quantity and any option that you need on the motor. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

Reading the part number

The number 2224U006SR gives the diameter and length class, the winding family, the nominal voltage in volts and the precious metal commutation. The same series is listed for 3, 12, 18, 24 and 36 V.

Options and leads

The data sheet lists twin leads of 150, 300 or 600 mm, leads with a connector, single PTFE leads and a version with two preloaded ball bearings, added to the code with a hyphen.

Bearings

Sintered bearings are standard. The ball bearing version carries higher shaft loads, with 8 N radial and 0.8 N axial.

Motor records

Record the full code with options, the supply voltage and the application of each motor.

Choosing a drive for the 2224U006SR

A brushed DC motor needs only a DC supply and a driver that can give the starting current. Check the stall current at the supply voltage, since the motor draws it at start and when the shaft is blocked. Add a speed controller or an encoder when the speed or position must be controlled. Compare the torque you need with the rated torque, not with the stall torque, for continuous work.

Thermal data

The winding is limited to 125 degrees C, and the motor works from -30 to +85 degrees C as standard.

Documents and quotation

The FAULHABER Series 2224 … SR data sheet (edition 28 July 2026) is attached to this page. Seven Star LLC, an independent supplier in Muscat, can quote this part on request. Please confirm the exact part number, options, lead length, bearing type and operating conditions against the current manufacturer data before ordering.