HRE-RES / ANALOGUE ANGLE FEEDBACK
Hollow Shaft Brushless Resolvers
Frameless hollow rotor and stator resolver configuration for motor feedback in demanding environments.
Ø10–120 mm target envelope
1X / 2X / 4X / 8X / 16X requests
BORE ID × HOUSING OD × OUTPUT
Match the shaft before the signal.
A resolver provides analogue sine and cosine signals under AC excitation. The external resolver-to-digital converter and its settings are part of the system design.
| Model | Hollow bore ID / mounting | Housing OD | Resolution | Output circuit / protocol | Max RPM |
|---|---|---|---|---|---|
| HRE-RES-F | Hollow Ø10–120 mm project requests | Rotor / stator OD and gap by drawing | 1X / 2X / 4X / 8X / 16X electrical speed | AC excitation; analogue sin / cos | Confirm with winding design |
Configuration request envelopes, not a released datasheet. Max RPM, exact bore, housing, resolution and protocol combinations require written confirmation. Inch and metric sizes are distinct.
Send your exact diameter and controller requirements →APPLICATION FIT / HRE-RES
Motor OEMs · thermal environments · custom drives
Bring the machine constraints into selection before ordering a prototype.
- Excitation voltage and frequency, transformation ratio, phase shift, impedance and decoder load
- Electrical speed ratio versus mechanical angle and commutation needs
- Winding insulation, rotor retention, temperature and vibration qualification
01 / CHOOSE THE MECHANICAL INTERFACE
One shaft. Three ways to read it.
Through-hollow
A continuous bore lets the shaft pass through the encoder. Check clamp access and shaft clearance.
Blind hollow bore
A closed bore fits the shaft end. Check insertion depth and avoid bottoming out the shaft.
Shaftless ring kit
A ring and readhead use the machine bearing. Check sensing gap, runout and calibration.
Original engineering concepts. Not to scale; final housing, ring and mounting dimensions require an approved drawing.
HRE-RES / ENGINEERING QUESTIONS
Resolve the fit before release.
What temperature range is available?
The initial engineering request envelope is −55 to +155°C. A 200°C requirement needs a separate winding, insulation and validation review. No blanket temperature qualification is implied.
Does a resolver remove every semiconductor from the feedback system?
The sensing rotor and stator can be passive wound components. External excitation and decoding electronics still need their own environmental qualification.
ENGINEERING HANDOFF / HRE-RES · Hollow Shaft Brushless Resolvers
Start with your shaft.
We’ll review the fit.
Send the exact bore, signal and application. Request a configuration review, quotation and matching STEP drawing in one inquiry.
[email protected] ↗Drawings and detailed specifications are confirmed for the selected configuration. Please include your original full model code for a replacement review.