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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


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

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

FAULHABER Polska sp. z o.o.

Ul. Górki 7

60-204 Poznan

Tel.: +48 61 278 72 53

Staubo Elektro-Maskin a.s.

Bjørnerudveien 12C

1266 Oslo

Tel.: +47 22 75 35 00

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

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


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

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


High Tech Campus 9

5656 AE Eindhoven

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


High Tech Campus 9

5656 AE Eindhoven

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


Modecenterstraße 22/C89

1030 Wien

Tel.: +43 1 7963149-0

ERNTEC Pty. Ltd.

15 Koornang Road

Scoresby, VIC 3179

Tel.: +61 (0) 3 9756 4000



Daimlerstr. 23

71101 Schönaich

Tel.: +49 7031 638 0

Fax: +49 7031 638 100

Jan-Christopher Mohr

Area Sales Manager

Tel.: +49 (7031) 638 158

Daniel Brönnimann

Area Sales Manager

Tel.: +41 (0) 79 570 0814

Michael Schütte

Area Sales Manager

Tel.: +49 (7031) 638 456

Beijing Office

East 10H3 Wu Mart Huike Mansion Building, No. 158 W. 4th Ring Road North

Haidian District, Beijing 100097

Tel.: +86 (0)10 5335 9353

Guangzhou Office

Room 1415, No. 5 Fuchang Road

Haizhu District, Guangzhou, 510240, Guangdong Province

Tel.: +86 (0) 20 3424 8332

Fax: +86 (0) 20 3424 8332

Xi‘an Office

Room A-509, No. 318 Yanta Road South

Qujiang New District, Xi’an 710061, Shaanxi Province

Tel.: +86 (0) 29 8521 2778

Fax: +86 (0) 29 8521 2778

Hong Kong Office

Unit 4, 19/F, Ricky Centre, 36 Chong Yip Street

Kwun Tong, Kowloon

Tel.: +852 3520 2078

Fax: +852 3914 7452

DC-Motors in electronic control robots steered using a cable remote control and a monitor

The large and extensive sewage networks operated by local authorities and companies, which are often quite old, require regular maintenance. In an increasing number of cases there is minor and major damage to be repaired. For such work on the pipe system PROKASRO, a sewer robot specialist, developed an extensive range of tools and equipment. From an autonomous service vehicle with auxiliary equipment such as a generator, compressor, water tank, and electronic control the robot is steered using a cable remote control and a monitor.

DC-Motors in electronic control robots steered using a cable remote control and a monitor
Service vehicle fully equipped for autonomous robot operation.

Trailing cable

Sewer robots have various sizes, tooling, and other specific features depending on the type of service. What they all have in common is supply and control via a supply cable. The supply cable, the so-called twin cable which is suitable for all laterally running remediation systems, pulls the robot behind itself through the sewage pipe. The standard length is 120 m, but lengths of up to 200 m are also possible. At this length and with the dirt that occurs again and again in the sewer, a powerful drive is, of course, the basic prerequisite for trouble-free operation.. At that length and with the amount of dirt that always occurs in the sewer a powerful drive is absolutely vital for smooth operation.

The problem was solved by using miniature DC motors incorporating a coreless rotor - made by FAULHABER.

For example, one version of the robot is equipped with nine motors of this type in order to allow flexible operation under ground. The drive used consists of four axes each comprised of one Series 3557...CR motor. The motor is coupled to a gearhead in order to be able to ensure optimal adjustment of speed and traction.

The advantage of this solution is that the same robot can work in large pipes with large wheels; appropriately stepped-down gears reduce the rotary speed in proportion to wheel size. Velocity and traction are thus kept independent of wheel diameter; the operator at the service vehicle can work as accustomed. A secure stance is provided by a pneumatic cylinder that presses the upper pairs of wheels against the inside of the pipe. Even slight damage like cracks or dents in the pipe are easily negotiated by the rubber-tired wheels. Despite their small size, the combined traction of the four drive motors is around 1,000 N (in other words 100 kg).

DC-Motors in electronic control robots steered using a cable remote control and a monitor
DC-Motors in electronic control robots steered using a cable remote control and a monitor
Different versions of robots, depending on the application.

Mobile head

In order to examine and work on each part of the pipe interior, the front of the robot is provided with a swiveling camera an electric cutter with up to 3000 W of power are integrated in the front side of the robot. DC-micromotors are used for movement here as well. Another motor mounted between the wheel drives allows the robot head to rotate around its longitudinal axis.

Inside of the head itself there is a DC motor in the tilting device of the milling machine.

Two small motors allow camera panning and control the focusing mechanism.

The chief advantage of FAULHABER drives in this case is their high power density, making the robot so small that it can be deployed from a pipe diameter of 200 mm upward. It is, however, also suited for pipe sizes of up to DN1200.

Being low-voltage motors with a voltage supply of less than 42 V, they satisfy the requirements for underwater operation. The high level of efficiency maintains the waste heat inside of the enclosed housing, which is kept at positive pressure with compressed air, within reasonable limits. An essential aspect is also the direct response to control commands. Movement on the monitor image and movement of the robot have to be virtually synchronized and delays due to motor ramps must be minimal.

DC-Motors in electronic control robots steered using a cable remote control and a monitor
Mobile camera: a panning motor and a focusing motor in the camera head ensure sharp images.
DC-Motors in electronic control robots steered using a cable remote control and a monitor

That is the only way in which the operator can move the robot reliably inside of the pipe having undergone only a short period of familiarization.

Nowadays, sewer robots with state-of-the-art camera electronics and drive components reduce the cost of inspection, maintenance, and repairs to underground sewer networks. Optimally configured, extremely small drive solutions are the key component to enable flexible activities even in narrow pipes. The reliability of miniature DC motors and their high level of efficiency permit extremely compact designs.

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