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Krautkramer Testing MachinesFull Body and Volumetric Inspection of Tubes and Bars

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GEIT-60018EN (03/16)

GE Krautkramer ROTA Ultrasonic Testing Machine Series

GE supplies the Krautkramer ROTA systems which, depending on the client’s requirements, can be configured for individual manual, central or motor adjustment, and are notable for highly repeatable results. A probe revolution rate of 6000-8000 rpm provides highest productivity rates.

In addition to defect detection, Krautkramer ROTA systems can also be used for geometry checking. The systems are well known for high test accuracy, repeatability of results, and test speed. Flaw-type defects throughout the material cross-section, and divergences in the dimensions for internal and external diameter, wall thickness, ovality and eccentricity can all be detected in a single inspection cycle. A manual probe fine-adjustment system is installed as standard. It enables fast and repetitive adjustment. The equipment is fitted with single or multiple probes, depending on the particular test application. Single or multi-channel, manual or computer-controlled, parallel scanned inspection electronics systems are used, depending on the equipment configuration. Many test standards require a second, independent physical test procedure. GE fulfils this specification via the integration of Eddy Current test systems.

Nonferrous tube testing

GE Krautkramer ROTA test systems have their origins in high-precision testing of tubes and heat-exchanger tubes for nuclear applications. Krautkramer ROTA 25 and Krautkramer ROTA 45 Z inspection systems are designed for this dimension range. The Krautkramer ROTA Z is a derivate from the standard Krautkramer ROTA line with central probe adjustment capabilities for fast changeover times. The Krautkramer ROTA and ROTA Z systems are conform to the extremely strict inspection requirements for nuclear specifications and permit not only defect detection but also complete geometrical checking of the tube cross-section, including internal and external diameter quality and eccentricity. These systems are in use with virtually all manufacturers of nuclear piping around the world.

Testing of hot-processed tubes and bars

Hot-processed tubes and bars necessitate special design features for test and inspection systems, in terms of surface quality, fouling, coarse manufacturing tolerances, test throughputs and test speeds. GE meets these requirements with its Krautkramer ROTA S systems, a special water routing and cleaning system reliably removes particles from the probes.The Krautkramer ROTA S series was specially developed for hot processed tube with rough surfaces, bend tolerance greater than standard API specification and including tubes with upset ends. Unlike the conventional Krautkramer ROTA systems, the Krautkramer ROTA S features a central probe distance adjustment system providing extremely fast change of material dimensions.

Krautkramer ROTA Systems Product Line

Name Version OD max TRD flaw TRD dim RPM

Conventional ROTA

25 8k8 25 4 4 8000

40 6k8 38,1 4 4 6000

65 6k8 65 4 4 4000

8k10 65 6 4 4000

90 8k10 90 8 2 3000

12k22 90 18 4 3000

130 8k10 130 6 4 2000

12k22 130 18 4 2000

ROTA Z

45 Z 8k10 45 4 2 4500

65 Z 8k22 65 6 2 3500

90 Z 8k22 90 6 2 2850

130 Z 8k22 135 6 2 2000

ROTA S

130 S 16k18 130 16 2 1600

180 S 16k20 180 18 4 1200

280 S 16k24 280 20 4 900

370 S 16k24 370 20 4 650

450 S 16k24 450 20 4 500

ROTA

25

ROTA

40

ROTA

45Z

ROTA

65

ROTA

65Z

ROTA

90

ROTA

90Z

ROTA

130

ROTA

130Z

ROTA

130

S

ROTA

180

S

ROTA

280

S

ROTA

370

S

ROTA

450

S

500

450

400

350

300

250

200

150

100

500

450

370

280

180

130

2838

56

74

90

130

28

90

18

90

18

65

13

65

13

4538

8 9

25

6

135

28

GEOil & Gas

GE Krautkramer ROTA Series

www.gemeasurement.com

Product Information Krautkramer ROTA 25 Krautkramer ROTA 40 Krautkramer ROTA 65

Design Rotary head with safety interlock and attached motor prepared for mounting on elevating sliding table

Speed 400 - 8000 revolutions per minute 300 - 6000 revolutions per minute 800 - 3500 revolutions per minute

Infinitely adjustable, frequency controlled three-phase motor with PLC control and oil/air lubrication, safety interlocks

Product outer diameter range Approx. 6 – 25 mm Approx. 8 – 38 mm Approx. 13 – 65 mm

Signal transmission Contact less and maintenance-free by means of rotating capacitors

Model 8K-8 with 8 probe holders and 8 transmission channels


Model 8K-10 with 8 probe holders and 10 transmission channels (also available with 12K-22 on request)

Probe assembly Single section crystal probes

Multi section crystal probes also available on request

Water seal Sliding ring seals, water basins for backflow of water on inlet and outlet sides

Guidance inside of Rotary head Rigid, non-rotating guide bushings in inlet and outlet of the rotary head exchangeable for each tube/rod diameter

Up to 25 mm dia. as quick-change cartridge system

Up to 40 mm dia. as quick change cartridge system

Through put direction Inlet direction

Left or right inlet depending on test line layout

Mechanical setup Replacement of guide bushings and rubber disk water wipers. Individual probe distance and angle adjustment

Incident angle setting Fine angle adjustment for each probe. Squint angle and acoustic irradiation angle adjustable separately

Water regulation Manual water control valve with water pressure indicator; water connection on inlet and outlet sides

Flaw detection e.g. according to EN 10246 / 6 / 7 / 13 / 14 / 17 or according to international specifications

Types of flaws Depending upon application, the rotary head is equipped with probes for core, longitudinal, transverse, oblique flaws and delamination and/or dimensional measurement

Water path Adjustable to application requirements

Testing speed The UT electronics pulse repetition rate of up to 20 KHz accomodates the high RPM-rate of the rotary head, still permitting statistical noise reduction for high probability of detection

Product Information Krautkramer ROTA 45Z Krautkramer ROTA 65Z Krautkramer ROTA 90Z

Design Rotary head with safety interlock and attached motor prepared for mounting on elevating sliding table

Speed 300 - 4500 revolutions per minute 800 - 3500 revolutions per minute 500 - 2850 revolutions per minute


Product outer diameter range approx. 9 – 45 mm approx. 13 – 65 mm approx. 18 – 90 mm


Model 8 K-10 with 8 probe holders and 10 transmission channels

Model 8K-22 with 8 probe holders and 22 transmission channels (8K-10 also available on request)


Probe assembly Single section crystal probes only. Up to 4 channels per probe holder location standard, more possible on request


Guidance inside of Rotary head Rigid, non-rotating guide bushings in inlet and outlet of the rotary head exchangeable for each tube/rod diameter


Up to 40 mm diameter as quick change cartridge system


Through put directionInlet direction

Left or right inlet depending on test line layout

Mechanical setup Replacement of guide bushings and rubber disk water wipers. Separate probe distance and angle adjustment

With central manual ratchet for all installed probes, distance display with aid of adjustment gauge

Incident angle setting Fixed angle (separate fine angle adjustment of each probe), common adaptation of adjustment angle for all probes with central distance adjustment

Water regulation Manual water control valve with water pressure indicator; water connection on inlet and outlet sides

Flaw detection e.g. according to EN 10246 / 6 / 7 / 13 / 14 / 17 or according to international specifications


Water path Adjustable to application requirements


Product Information Krautkramer ROTA 130S Krautkramer ROTA 180S Krautkramer ROTA 280S Krautkramer ROTA 370S Krautkramer ROTA 450S

Design Rotary head with safety interlock and attached motor prepared for mounting on elevating sliding table particularly designed for testing black, hot produced material

Rotary head with safety interlock and attached motor prepared for mounting on elevating sliding table particularly designed for testing black, hot produced material. AP tubes with upset ends can also be tested

API tubes with upset ends can also be tested

Equipped with protecting flap with safety locking and with flap for easily cleaning the testing drum and probes. API tubes with upset ends can also be tested. For reduction of the accumulat-ing dirt inside the testing drum, the Rota can be equipped with an external tube cleaning device

Speed 500 - 1600 revolu-tions per minute

400 - 1200 revolu-tions per minute

400 - 900 revolutions per minute 250 - 650 revolutions per minute

200 - 500 revolutions per minute


Product outer diameter range

Approx. 28 – 130 mm Approx. 38 – 180 mm Approx. 56 – 280 mm Approx. 74 – 370 mm Approx. 90 – 450 mm



Model 16K20 with 16 probe holders and 20 transmission channels

Model 16K-24 with 16 transducer manipulators and 24 transmission channels available plus 1 channel (outside) for temperature compensation of dimensional measurement

Model 16K20 with 16 probe holders and 20 transmission channels


Probe assembly Variable, single section crystal probes only. Up to 4 channels per probe holder location standard, more possible on request

Single and/or multi element crystal probes possible up to 4 channels per probe location 14 channels available all in all. Standard assembly: 2 x 4 or 4 x 2 - element transducer for LF, 8 single element transducer for TF, 4 single element transducer for WT and lamination for combined LF/TF testing. For pure LF testing 4 x 4 element transducer can be used allowing to increase the testing speed

Variable, single and multi section crystal probes possible (up to 4 channels per probe location standard, more possible on request)


The rotating head is internally equipped with sliding ring seals. Soft rubber disks are used to seal the test drum with the moving tube against leaking water

Sliding ring seals, water basins for backflow of water on inlet and outlet sides

Guidance inside of Rotary head

Rigid, non-rotating guide bushings in inlet and outlet of the rotary head exchangeable for each tube/rod diameter


(approx. 110 to 180 mm) exchangeable for each diameter, soft rubber disks for the upper range of tube/rod diameter 180 to 275 mm) exchangeable for each diameter

Through put direc-tion / Inlet direction

Left or right inlet depending on test line layout and customer’s requirements

Mechanical setup Replacement of guide bushings and rubber disk water wipers; probe distance adjustment with central manual ratchet for all installed probes, distance display with aid of adjustment gauge

Incident angle setting

Fixed angle, common adaptation of adjustment angle for all probes with central distance adjustment; separate fine angle adjustment of each probe

Fixed angle for W.T. measurement; optional transducer holder with fixed angle or transducer manipulators (individually adjustable ± 20°) for transverse flaw testing; adjustable trans-ducer manipulators capable to be individually adjustable ± 20° for longitudinal testing. This allows a specific adjustment of the transducers to most critical applications

Fixed angle, common adaptation of adjust-ment angle for all probes with central distance adjustment; separate fine angle adjustment of each probe

Water connection On inlet and outlet sides; PLC flow control with display

Water circulation with water basins on inlet and outlet side with filter, flow meter, pump with frequency converter and PLC flow control by with display

On inlet and outlet sides; PLC flow control with display

Water purification Rapid drainage of dirty and contaminated coupling water

2- or 3-chamber underground tank allows rough purification, water backflow via band filter to the upper 2-chamber tank made from stainless steel, coupling water supply to the Rota from clean water chamber. Water substitution only due to loss of spraying water. Water exchange one or two times a year (depending on the tube surface)

Rapid drainage of dirty and contaminated coupling water

Flaw detection Depending on individual appication


Water path The water path is limited to 40 mm at the maximum test diameter


Tube transportation The original test bench supplied by GE S&I is equipped with at least 4 triple centering units. They guarantee an optimal tube guidance and satisfactory test results

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