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Veléz Sarsfield 201640 Martinez

Buenos Aires

Tel.: +54 (9) 11 5993 8719

Horne Technologies cc

PO Box 536

Betty's Bay, 7141

Tel.: +27 (0)76 563 2084

Building of FAULHABER MINIMOTOR SA, Croglio, Switzerland


Zona Artigianale 8, Madonna del Piano

6980 Croglio

Tel.: +41 (0)91 611 31 00

Building of FAULHABER MICROMO LLC, Wien, Austria


14881 Evergreen Avenue

Clearwater, FL 33762-3008

Tel.: +1 (727) 572 0131

NRC Engineering & Precision Drives Co., Ltd.

17F., No. 890, Jingguo Rd., Luzhu Dist.

Taoyuan City 33858, Taiwan, R.O.C.

Tel.: +886 (0) 3-316-1838

EDEL Teknoloji Sistemleri Sanayi ve Ticaret Ltd.Şti

Folkart TowersAdalet Mah.Manas Blv. No:47B/2809

35530 Bayraklı/İzmir

Tel.: + 90 232 215 08 91

Building of FAULHABER Asia Pacific Pte Ltd., Singapore

FAULHABER Asia Pacific Pte Ltd.

Blk 67 Ubi Road 1, #06-07 Oxley Bizhub

Singapore 408730

Tel.: +65 6562 8270

Compotech Provider AP

Gustavslundsvägen 145, 4 tr

167 51 Bromma

Tel.: +46 (0) 8 441 58 00


56 (bldg. 32), Shosse Enthusiastov

111123 Moscow

Tel.: +7 495 2214 052

Building of FAULHABER Polska sp. z o.o., Poznan, Poland

FAULHABER Polska sp. z o.o.

Ul. Górki 7

60-204 Poznan

Tel.: +48 61 278 72 53

FAULHABER Malaysia Sdn Bhd

1A-2-01 & 02 · One Precinct · Lengkok Mayang Pasir

11950 Bayan Baru · Penang · Malaysia

Tel.: +60 4 619 2570

Swiss Amiet Co., Ltd.

W-903, SK V1 Center, 11 Dangsan-ro 41-g

Yeongdeungpo-gu,07217, Seoul

Tel.: +82 (0) 2 783 4774

Shinkoh Electronics Co., Ltd.

Tokyo Sales Office, Motor Sales Division8F, REID-C OMORI building, 6-20-8

Minami-oi, Shinagawa-ku, Tokyo 140-0013

Tel.: +81 (0) 3 6404 1003

Building of FAULHABER Italia S.r.l., Lomazzo, Italy

FAULHABER Italia S.r.l.

Via Cavour 2

22074 Lomazzo CO

Tel.: +39 0236714708

Inteltek Automation JV

S.No. 100/5, Ambegaon

Pune - 411046

Tel.: +91 (0) 20 39392150

Lewenstein Technologies Ltd.

1 Ha'arava St. Givat Shmuel

5400804 Israel

Tel.: +972 3 9780 800

Electro Mechanical Systems Ltd.

Eros House, Calleva Industrial Park, Aldermaston

Reading, RG7 8LN

Tel.: +44 (0) 118 9817 391

Building of FAULHABER France SAS, Montigny-le-Bretonneux, France


Parc d’activités du Pas du Lac2, Rue Michaël Faraday

78180 Montigny-le-Bretonneux

Tel.: +33 (0) 1 30 80 45 00


Passeig Ferrocarrils Catalans 178

Cornellà de Llobregat 08940 (Barcelona)

Tel.: +34 93 422 70 33


Suokalliontie 9

01740 Vantaa

Tel.: +358 (0) 9 5259 230

Routech s.r.o.

Dr. Milady Horákové 185/66

460 06 Liberec

Tel.: +420 489 202 971

Compower ApS

Marielundvej 29

2730 Herlev

Tel.: +45 (0) 44 92 66 20

Marte Científica e Instrumentação Industrial Ltda

Av Fco Andrade Ribeiro 430

37540-000 Santa Rita do Sapucai, MG

Tel.: +55 (11) 3411 4500

Building of FAULHABER Drive System Technology (Taicang) Co., Ltd.,Taicang, China

FAULHABER Drive System Technology (Taicang) Co., Ltd.

Eastern Block, Incubator Building, No. 6 Beijing Road West

Taicang 215400, Jiangsu Province

Tel.: +86 (0) 512 5337 2626

Building of FAULHABER Benelux B.V., Eindhoven, Netherlands


High Tech Campus 9

5656 AE Eindhoven

Tel.: +31 (0) 40 85155-40

Building of FAULHABER Austria GmbH, Wien, Austria


Modecenterstraße 22/C89

1030 Wien

Tel.: +43 1 7963149-0

ERNTEC Pty. Ltd.

15 Koornang Road

Scoresby, VIC 3179

Tel.: +61 3 9756 4000

Fax: +61 3 9753 4000

Building of Dr. Fritz Faulhaber GmbH & Co. KG, Schönaich, Germany



Faulhaberstraße 1

71101 Schönaich

Tel.: +49 7031 638 0

Fax: +49 7031 638 100

We are sorry

FAULHABER is currently not represented in the selected country.

Please contact us with your request at

Jan-Christopher Mohr

Area Sales Manager

Tel.: +49 (7031) 638 158

Michael Schütte

Area Sales Manager

Tel.: +49 (7031) 638 456

Daniel Brönnimann

Area Sales Manager

Tel.: +41 (0) 79 570 0814

Rolf Leitner

Regional Sales Manager

Tel.: +41 (0) 79 422 3348

Rafael Steinemann

Area Sales Manager

Tel.: +41 (0) 79 932 1645

DC-Motors for functional prosthese like myoelectric hand

Functional prostheses are known to most of us only in science fiction films which give the artificial extremities superhuman strength. By contrast, bionic hand prostheses do not make the wearer a superhero in real life. But they can make many things possible for them which are normal for most people.

DC-Motors for functional prosthese like myoelectric hand
The Bebionic myoelectric prosthesis weighs between 400 and 600 grams and is about as heavy as a natural hand. ©Ottobock
DC-Motors for functional prosthese like myoelectric hand

Intuitive movement

The Bebionic myoelectric prosthesis weighs between 400 and 600 grams and is about as heavy as a natural hand. It is controlled by small electrical signals in the body. These are generated by muscle contractions and can be measured with electrodes on the skin – the same way as an ECG in heart diagnostics. Two electrodes, that are integrated into the prosthesis shaft, detect the myoelectric signals and forward them to the control electronics. These signals are amplified and used to activate the five small electric motors (one for each finger) that move the fingers and thumb – the hand opens or closes itself. As a result, the strength of the muscle contraction controls the speed and the gripping force: a weak signal generates a slow movement, a strong signal generates a quick movement.
The muscles which are used to open and close the hand prosthesis are actually responsible for the movement of the wrist in a natural hand. Its wearer must learn that it now has a different function. “The human brain is unbelievably adaptable. After a short amount of time, people perform the movement intuitively like how car drivers step on the brake when they want to stop,” says Ted Varley, Technical Director at Steeper.

DC-Motors for functional prosthese like myoelectric hand
DC-Motors for functional prosthese like myoelectric hand

Additional small dc motors for more control

The first myoelectric hand came onto the market at the start of the 1980s. They were driven by a single motor and only had a simple gripping mechanism: thumb, index and middle fingers could be closed for a pincer grip. Ring and small fingers were only available for cosmetic reasons and had no gripping force. This concept was fundamentally changed for the Bebionic hand about ten years ago. “We determined that people accept lower gripping force per finger if they get more flexibility,” explains Ted Varley. To control the individual fingers, each finger on the Bebionic hand is equipped with its own electric motor. The four small dc motors for the fingers are located in the palm of the hand, the fifth in the thumb itself. Encoders are integrated into the motors which precisely detect the position of the finger at any time.
Thanks to individual control, the fingers can be arranged into a total of 14 different grip patterns. With the key grip, which moves the thumb up and down with the fingers flexed, you can hold flat items such as plates, keys or bank cards. With the hook grip, heavy loads of up to 25 kilograms can be carried, the outstretched index finger permits the use of keyboards and remote controls. With the power grip, the thumb is in the opposite position and all fingers close until they encounter resistance. This is used to clasp irregularly shaped objects such as wine glasses. “This position looks much more natural than a pincer grip. The grip is also more stable if all fingers are used,” stresses Varley.

DC-Motors for functional prosthese like myoelectric hand
Each finger is moved by its own small dc motor ©Ottobock

Increased self-esteem

The bionic hand makes many everyday activities easier. “Actually, it often are the small things which become easier with the prosthesis. To sum up, it leads to a clearly improved quality of life,” explains Ted Varley. Furthermore, the artificial hand also has a psychological effect: “Many users report that their feeling of self worth has increased with the Bebionic as they encounter interest and fascination with their new high-tech prosthesis.”
In this context, the attractive design of the prosthesis also plays an important role. “Our approach was rather unusual in prosthetics with the development of the third generation of Bebionic: We first developed the housing and then searched for solutions such as how the individual components can be housed,” emphasises Varley. “Five years ago, this would not have been possible for the small hand – the technology wasn’t advanced enough.” Also, the small dc motors of series 1024 SR that were predestined for this application were still in the development phase when Steeper turned to FAULHABER with this project in 2013. The project teams on both sides then expedited the development of the dc motor series and hand prosthesis at the same time. Regular meetings of the STEEPER and FAULHABER development teams took place in Great Britain and Switzerland. The intermediary of the meetings and the exclusive sales partner of FAULHABER in Great Britain, Electro Mechanical Systems (EMS), also took part. This intensive cooperation ultimately resulted in a motor with an exceptional powervolume ratio and tailor-made drive for the thumb which has brought this intense cooperation during development to a successful conclusion.

DC-Motors for functional prosthese like myoelectric hand

Top marks for performance

The new small dc motor of the 1024 SR series is actually the best of its class and the most powerful for its size on the market. With a diameter of 10 mm and a length of 24 mm, it delivers a stall torque rating of 4.6 mNm. It offers a consistently high torque across the entire speed range as a result of the flat speed/torque curve. The strong performance, among others, is made possible by the development of a new coil design which contains 60 percent more copper than its predecessor and has been combined with a powerful rare-earth magnet. In order to make the movement as quiet as possible, the artificial hand uses tailor-made planetary gearheads of series 10/1. “A significant challenge was the development of the linear drive system which had to be integrated into the thumb”, says Tiziano Bordonzotti, Sales Engineer at FAULHABER MINIMOTOR. Thanks to high-precision 4 point bearings from FAULHABER’s subsidiary, Micro Precision Systems (MPS), it was possible to make the drive significantly shorter than the competition. The unique features of the 4 point bearing make it possible for it to withstand the high axial forces necessary for the application despite the smaller dimensions compared to alternative bearing systems. The entire thumb drive can withstand an axial force of up to 300 N with an overall length of less than 49 mm.
Ted Varley is excited by the result of the collaboration: “The Bebionic hand in size S is the most realistic myoelectric hand prosthesis on the market. It would not have been possible to realise this project without close cooperation with the committed project team of FAULHABER.”


1024 ... SR

Precious Metal Commutation

Data sheet (PDF) Product details
Planetary Gearheads


Data sheet (PDF) Product details

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