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Prusa Research
Prusa Research Prusa Pro HT90
FDM filament printer. Build volume: Ø 300 × 400 mm. Delta kinematics, cylindrical build area.
Assessed from documentation Updated on October 4, 2026
Variants
How to recognize it: Check the full model name “Prusa Pro HT90” on the label or in device information. Suffixes and revisions identify different models; check the source before selecting parts.
High-flow toolhead
Technical specifications
Manufacturer specifications for the listed configuration. Notes identify accessories, measurement conditions and calculated values.
Technology and structure3
| Technology | FDM |
|---|---|
| Kinematics | Delta |
| Build area shape | Cylindrical |
Build area and volume3
| Build area Z | 400 mm |
|---|---|
| Build diameter | 300 mm |
| Build volume | 28.2743 L Calculated as nominal cylindrical volume. |
Hardware4
| Enclosed as standard | Yes |
|---|---|
| Extruder type | Direct drive |
| Filament diameter | 1.75 mm |
| Standard nozzle | 0.4 mm |
Temperatures4
| Maximum hotend temperature | 300 °C |
|---|---|
| Maximum bed temperature | 155 °C |
| Chamber heating | Active |
| Maximum chamber temperature | 90 °C |
Speed and performance4
| Advertised maximum print speed | 250 mm/s |
|---|---|
| Maximum travel speed | 600 mm/s |
| Maximum acceleration | 20,000 mm/s² |
| Maximum volumetric flow | 40 mm³/s ABS with a 0.8 mm nozzle. |
Resolution2
| Minimum layer thickness | 0.05 mm |
|---|---|
| Maximum layer thickness | 0.3 mm |
Features3
| Automatic leveling | Yes |
|---|---|
| Camera | Built in |
| Air filtration | HEPA + activated carbon |
Connectivity3
| Connectivity | Ethernet, Wi-Fi |
|---|---|
| Listed slicers | PrusaSlicer |
| Firmware | Klipper / Duet |
Dimensions and weight3
| Machine width | 530 mm |
|---|---|
| Machine depth | 530 mm |
| Machine height | 1,050 mm |
Technical sources: Prusa Pro HT90 — documentazione ufficiale
Undocumented specifications (22)
- Shared dual-nozzle area X: Not documented
- Shared dual-nozzle area Y: Not documented
- Shared dual-nozzle area Z: Not documented
- Installed toolheads / extruders: Not documented
- Available nozzle diameters: Not documented
- Nozzle material: Not documented
- Build plate: Not documented
- Advertised typical print speed: Not documented
- Multicolor system: Not documented
- Colors with documented configuration: Not documented
- Filament runout sensor: Not documented
- Power loss recovery: Not documented
- Control display diagonal: Not documented
- Control display: Not documented
- Internal storage: Not documented
- Manufacturer-listed materials: Not documented
- Net weight: Not documented
- Rated power: Not documented
- Power supply: Not documented
- Advertised noise: Not documented
- Leveling method: Not documented
- Advertised Z accuracy: Not documented
High-temperature toolhead
Technical specifications
Manufacturer specifications for the listed configuration. Notes identify accessories, measurement conditions and calculated values.
Technology and structure3
| Technology | FDM |
|---|---|
| Kinematics | Delta |
| Build area shape | Cylindrical |
Build area and volume3
| Build area Z | 400 mm |
|---|---|
| Build diameter | 300 mm |
| Build volume | 28.2743 L Calculated as nominal cylindrical volume. |
Hardware4
| Enclosed as standard | Yes |
|---|---|
| Extruder type | Direct drive |
| Filament diameter | 1.75 mm |
| Standard nozzle | 0.6 mm |
Temperatures4
| Maximum hotend temperature | 500 °C |
|---|---|
| Maximum bed temperature | 155 °C |
| Chamber heating | Active |
| Maximum chamber temperature | 90 °C |
Speed and performance4
| Advertised maximum print speed | 250 mm/s |
|---|---|
| Maximum travel speed | 600 mm/s |
| Maximum acceleration | 20,000 mm/s² |
| Maximum volumetric flow | 40 mm³/s ABS with a 0.8 mm nozzle. |
Resolution2
| Minimum layer thickness | 0.05 mm |
|---|---|
| Maximum layer thickness | 0.3 mm |
Features3
| Automatic leveling | Yes |
|---|---|
| Camera | Built in |
| Air filtration | HEPA + activated carbon |
Connectivity3
| Connectivity | Ethernet, Wi-Fi |
|---|---|
| Listed slicers | PrusaSlicer |
| Firmware | Klipper / Duet |
Dimensions and weight3
| Machine width | 530 mm |
|---|---|
| Machine depth | 530 mm |
| Machine height | 1,050 mm |
Technical sources: Prusa Pro HT90 — documentazione ufficiale
Undocumented specifications (22)
- Shared dual-nozzle area X: Not documented
- Shared dual-nozzle area Y: Not documented
- Shared dual-nozzle area Z: Not documented
- Installed toolheads / extruders: Not documented
- Available nozzle diameters: Not documented
- Nozzle material: Not documented
- Build plate: Not documented
- Advertised typical print speed: Not documented
- Multicolor system: Not documented
- Colors with documented configuration: Not documented
- Filament runout sensor: Not documented
- Power loss recovery: Not documented
- Control display diagonal: Not documented
- Control display: Not documented
- Internal storage: Not documented
- Manufacturer-listed materials: Not documented
- Net weight: Not documented
- Rated power: Not documented
- Power supply: Not documented
- Advertised noise: Not documented
- Leveling method: Not documented
- Advertised Z accuracy: Not documented
No published compatibility for this printer.
Accessories with verified compatibility
| Accessory | Printer variant | Status |
|---|---|---|
| eSUN eBOX Pro filament dryer eBOX Pro | High-flow toolhead | Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the dryer does not connect to the printer. No hands-on test. |
| eSUN eBOX Pro filament dryer eBOX Pro | High-temperature toolhead | Compatibility declared by the seller Verified on October 12, 2026 1.75 mm filament documented by the printer manufacturer; the dryer does not connect to the printer. No hands-on test. |
Related guides
General guides help identify print defects. Follow the manual for your exact model and variant for disassembly, maintenance and calibration.
- First layer not sticking: causes and checks
How to recognise a first layer that is too high, too squished or uneven and fix it in order: plate cleaning, slicer profile, leveling, Z offset. Based on official guidance from Bambu Lab, Prusa, Creality, Elegoo and Anycubic.
- Warping: corners lifting off the bed with ABS, ASA, PETG and PLA
Why corners curl and how to reduce it: plate cleaning, drafts, enclosure, bed temperature, brim and ears, cooling and glue. Based on official guidance from Bambu Lab and Prusa and on user experience.
- Clogged nozzle and under-extrusion: find where the blockage is and fix it
How to tell a blockage in the PTFE tube, the extruder or the hotend apart, when to use the needle and cold pull, how to recognise heat creep, and when replacing the nozzle, PTFE tube or gears is actually justified.
- Wet filament: recognise it, dry it and store it
Symptoms of filament that has absorbed moisture, the most sensitive materials, how to dry following Bambu Lab and Prusa official tables without damaging spool or filament, and how to keep it dry.
- Stringing and oozing: how to get rid of filament strings and blobs
How to recognise stringing and oozing, the main causes (wet filament, temperature, retraction, travel moves, nozzle) and the checks to do in order, with official guidance from Prusa, Bambu Lab, Creality and Elegoo.
- Layer shifting: causes and checks in order
Why layers shift along X or Y and how to find the cause: obstructions, collisions with curled parts, belts, pulleys, speed, electronics cooling and motors, with official guidance from Prusa, Bambu Lab, Creality, Elegoo and Anycubic.
- Ringing and ghosting: getting rid of ripples on FDM print walls
What ringing (or ghosting) is, why it appears after corners and lettering, and how to fix it in order: printer surface, loose parts, belts, lubrication, vibration calibration (input shaping), speed and acceleration.
Dates and news
-
Prusa enters the industrial sector with the Prusa Pro HT90
At Rapid TCT in Los Angeles, Prusa Research announced the start of production of the Prusa Pro HT90, a delta printer with an actively heated chamber aimed at high-performance materials.
Sources: Prusa Research enters the industrial 3D printing sector with the new Prusa Pro HT90 (Prusa Research)
Official documentation
Manuals and guides published by Prusa Research. Links go to the manufacturer’s site; we consulted them on the date shown.
- Support page
-
- Support hub (Knowledge Base) — English, accessed on October 5, 2026
- User manual
-
- User manual (Handbook v1.01) — English, accessed on October 5, 2026
- Quick start guide
-
- Unboxing — English, accessed on October 5, 2026
- Maintenance
-
- Maintenance guides index — English, accessed on October 5, 2026
- Periodic maintenance — English, accessed on October 5, 2026
- External filter cleaning — English, accessed on October 5, 2026
- Magball lubrication — English, accessed on October 5, 2026
- Linear rail lubrication — English, accessed on October 5, 2026
- Belt tensioning — English, accessed on October 5, 2026
- Troubleshooting
-
- Troubleshooting — English, accessed on October 5, 2026
- Parts replacement
-
- Maintenance kit — English, accessed on October 5, 2026
- Nozzle replacement — English, accessed on October 5, 2026
- High-temperature nozzle replacement — English, accessed on October 5, 2026
- HEPA filter replacement — English, accessed on October 5, 2026
- PTFE Bowden tube replacement — English, accessed on October 5, 2026
- External input fuse replacement — English, accessed on October 5, 2026
- Firmware and software
-
- Firmware and downloads — English, accessed on October 5, 2026
- Firmware 1.3.56 safety notice (PSA-2026-001) — English, accessed on October 5, 2026
- Technical specifications
-
- High-temperature printhead (500 °C) — English, accessed on October 5, 2026
- Official documentation — English, accessed on October 5, 2026
Sources
- Prusa Pro HT90 — official documentation — Prusa Research, accessed on October 5, 2026