Intra SFTI Single Flank Testing Systems of Internal Gears
Gleason's Intra SFTI series leads the industry in single flank testing technology. It is designed for inline 100% part inspection, either with supplied automation or seamlessly integrated into existing automation systems.
| Workpiece diameter, max. |
350 mm |
| Workpiece length, max. | 350 mm |
| Face width, max. | 100 mm |
If you have workpiece dimensions exceeding these standards, please contact us.
Taylored Solution for Internal Gears
The Intra SFTI is a dedicated testing platform for internal gears. Such gears are increasingly found in electric vehicle planetary transmissions, where their thin-walled design presents unique challenges for both handling and measurement. Its axis configuration enables extremely small center distances making the system ideally suited for internal gears with compact geometries. The same design can also be leveraged for the inspection of very small external gears.
TA Torsional Acceleration Testing
Torsional Acceleration supports test speeds of up to ±2,000 rpm and test torques of up to ±30 Nm in both directions of rotation. The Intra-SFT series offers high measurement accuracy, an order resolution from 0.125 to 1, and repeatability better than 1.2 dB. A synchronous order range from 256 to 4,096 is particularly suitable for demanding EV applications. Optional spindle condition monitoring is also available.
Single Flank TE Analysis
Intra SFTI evaluates rotational accuracy of each flank versus a master/mating gear with high-precision Static and Dynamic Transmission Error. Intra's "Pure Torque" drive removes motor resonance, while automatic calibration eliminates fixture/master errors and aligns to journals. Advanced order analysis (ghosts, harmonics), SPC evaluation, flexible visualization, and a "Worst TE Order" indicator enable fast, reliable quality assessment.
Real-Time Process Control
The Intra SFT single-flank-testing measures important functional gear characteristics in accordance with the ISO 1328-1 standard—including Tooth to tooth single flank composite deviation fis, Total Single Flank Composite Deviation Fis, Single Flank Composite Runout Frs, as well as surface defects such as nicks and burrs. An integrated FFT analysis enables precise frequency-domain diagnosis and rapid identification of the causes of defects.
CRITERION Analysis Software
CRITERION Analysis Software supports the complete inspection and analysis process of gears and other parts with rotationally symmetrical geometry. CRITERION puts powerful features right at your fingertips. The simple, intuitive human-machine interface improves operators' performance. Charts are easily configured to meet customer preferences or international standards such as AGMA, DIN, ISO, JIS, GOST, China GB, and others.
Automatic or Semi-Automatic Execution
Fully automatic Intra SFTI systems are ideally suited for high-volume production, offering hands-free operation and seamless integration into automated lines. In case greater flexibility for mixed or lower-volume production is required, Intra SFT systems are available with operator-assisted loading. Both solutions deliver the same high-precision single flank measurement performance — the right choice depends on your production needs.
Alignment Option for Internal Gears
A particular challenge when testing internal gears is their tendency to deform when clamped due to their thin-walled geometry. This can cause the gears to appear better than they would in an unclamped condition, resulting in inaccurate measurement results. To address this issue, Gleason has developed proprietary compensation technology that identifies and corrects the influence of clamping-induced distortion during evaluation.
