Jenny Science ROTAX Rxhq and Rxvp Rotary Axes Review: Specs, Price and Applications
ROTAX provides direct-drive rotary axes with absolute measurement and selected hollow-shaft or fluid-feedthrough arrangements. Rxhq 50 and Rxhq 110 are different frame classes; the current 110-50T4.0 data identify a 50 mm hollow shaft and 4.0 N·m nominal torque. The smaller 110-50T1.5 and special Rxvp have separate functions and limits.
Quick Verdict
Consider ROTAX where a compact direct drive and central routing fit the process. Select motor, encoder resolution, cable and XENAX control scope together. The source’s 4.5 N·m family statement should not replace the current 4.0 N·m nominal rating of the identifiedT4.0 configuration.
Jenny Science ROTAX Rxhq and Rxvp Rotary Axes at a Glance
Specification | Details |
Rxhq 110-50T4.0 nominal torque | 4.0 N·m under stated continuous conditions |
T4.0 peak torque | 12.0 N·m at documented 10% peak-duty scope |
T4.0 hollow shaft | 50 mm |
T4.0 feedback choices | 648000 or 2592000 increments/revolution;different repeatability/speed scope |
Current high-resolution example | ±1 arcsec bidirectional repeatability;not universal accuracy |
Rxhq 50 /110-T1.5 | Separate smaller/torque configurations;use respective data |
Rxvp | Distinct compressed-air/vacuum feedthrough axis with selected ELAX integration |
Design and Engineering Assessment
Encoder resolution and repeatability differ between the currentT4.0 options. The high-resolution option also has its own speed scope. Do not combine the highest nominal speed of another option with the finest resolution as one guaranteed operating point.
Direct drive removes gearbox backlash but not structural compliance, cogging, fixture error or load effects. Supported XENAX calibration/force functions can compensate specified disturbances; estimated torque/force behavior is not automatically an independently calibrated safety or process sensor.
A hollow shaft permits cables or optical paths to pass through, whereas the Rxvp feedthrough provides a distinct fluid-routing feature. Neither should be assumed to include an arbitrary electrical slip ring or unlimited twisting cable arrangement.
Choose Axis, Feedback and Controller
Specify torque/speed duty, inertia, bearing loads, hollow opening and the complete motor/encoder/cable configuration. Match the supported XENAX release and actual single-cable arrangement.
PreserveT1.5 versusT4.0 identity and anyM16 connector version. A family name does not establish equal torque, dimensions or a plug-compatible replacement.
Accept the Useful Rotary Result
Verify scaling, absolute reference, limits and clearance before loaded motion. Test settling and reversal at the actual workpiece radius with representative temperature and services.
Retain calibration, tuning, encoder resolution and fixture datum. Absolute feedback can identify position at startup, but controlled recovery must still account for tool and cable state.
Applications and Selection
Compact precision rotary positioning, inspection and supported pick-and-place axis combinations.
For Jenny Science ROTAX Rxhq and Rxvp Rotary Axes, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Compact direct-drive hollow-shaft configurations
Absolute measurement with selected resolution choices
Separate feedthrough and controller-integration options
Limitations
Torque/speed depend on exact variant and feedback
Source legacy maxima differ from currentT4.0 scope
Estimated force and routing features require proper boundaries
Who Should Consider Jenny Science ROTAX Rxhq and Rxvp Rotary Axes?
Consider Jenny Science ROTAX Rxhq and Rxvp Rotary Axes for compact precision rotary positioning, inspection and supported pick-and-place axis combinations. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
Jenny Science ROTAX Rxhq and Rxvp Rotary Axes FAQ
Does every ROTAX have 4.5 N·m nominal torque?
No. The inspected 110-50T4.0 page lists 4.0 N·m nominal;other variants have separate ratings.
Is 12 N·m continuous?
No. It is a peak figure with a documented 10% duty scope.
Are the two encoder options identical in speed/repeatability?
No. Use the table for the selected configuration.
Does a hollow shaft include a fluid rotary union?
Not by itself. Rxvp is a distinct feedthrough configuration.
Does direct drive eliminate all position error?
No. Feedback, structure, fixture and load remain relevant.
Is calculated motor torque an independent safety sensor?
Do not assign such a function without appropriate documented evidence.
Does absolute feedback remove collision checks?
No. Tool, fixture and service-routing state still need controlled recovery.
What should a replacement preserve?
Frame, torque variant, feedback resolution, cable/connector, controller, tuning and calibration.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.
