Description
EP-PR3065 Planetary Gearbox
EVER POWER 3-Stage Helical Planetary Gearbox ?? High Reduction for Precision Drives
The EP-PR3065 is EVER POWER’s 3-stage replacement for the Brevini riduttori PR3065. Combining a helical first and second stage with a straight-cut output stage, this unit achieves 11,000 Nm output torque with a ratio range extending to 120:1 ?? covering slow-speed servo applications that a 2-stage unit cannot reach. Targeted at precision machine tools, semiconductor handling equipment, film winding systems and medical imaging drives.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-PR3065 |
| Replaces | Brevini riduttori PR3065 |
| Max Output Torque | 11,000 Nm |
| Gear Stages | 3 |
| Ratio Range | 25:1 – 120:1 |
| Max Input Speed | 3,500 rpm |
| Protection Class | IP65 |
| Approx. Weight | ~34 kg |
Working Principle
The first two helical stages reduce speed and amplify torque with minimal audible noise. The third straight-cut stage provides maximum torque density for the output. Pre-loaded angular contact bearing pairs on the input and output shafts eliminate axial play under reversal loads, which is critical for servo-driven applications that frequently change direction at high cycle rates.
Core Advantages
|
● ISO Class 4 Gear Accuracy
Highest accuracy in EVER POWER’s RPR range ?? minimum transmission error for precision axes. |
● Pre-Loaded P4 Bearings
Zero axial play under reversal ?? critical for high-cycle servo applications. |
|
● Helical Stages 1 and 2
Two helical stages provide very low noise ?? suitable for medical and clean-room environments. |
● 120:1 High Ratio
3-stage design covers very slow speed applications without large motor. |
|
● Direct PR3065 Replacement
Matching flange pattern ?? direct bolt-in fit. |
Structure and Material Technology
All three stage housings are precision-bored from a single GGG50 ductile iron casting, ensuring perfect stage-to-stage axis alignment without separate alignment shims. Input and output shaft bearings are pre-loaded P4 accuracy angular contact pairs. Internal gear flanks are ground to ISO accuracy class 4 ?? the highest standard in EVER POWER’s RPR catalogue ?? for applications demanding minimum transmission error.
Typical Application Scenarios
| Industry | Application | Key Requirement |
|---|---|---|
| Semiconductor | Wafer handler rotation axis | ISO class 4 gear accuracy meets nanometre-level positioning requirements. |
| Medical | MRI table positioning drive | Ultra-low noise from helical stages is essential in quiet scan room environments. |
| Film / Foil | Precision winding tension control | Pre-loaded bearings prevent axial play under frequent tension reversal. |
| Optics | Telescope or antenna slew drive | 120:1 ratio provides very slow precise angular movement from standard motor. |
Selection Guide
- Required Output Torque (Nm) ?? Confirm peak and continuous torque requirement with appropriate safety factor.
- Gear Ratio ?? Motor speed (rpm) divided by required output speed (rpm).
- Duty Cycle ?? Continuous S1 or intermittent S3/S6; affects thermal de-rating.
- Motor Interface ?? Flange type (SAE/ISO), shaft diameter, keyway or spline specification.
- Environment ?? IP class, ambient temperature, corrosion zone, orientation.
Contact our engineering team for a free application sizing review.
Brevini PR3065 vs. EVER POWER EP-PR3065
Important Notice: EVER POWER references the Brevini riduttori PR3065 model number solely to assist customers in identifying a compatible replacement. We do not manufacture, sell, or claim any affiliation with Brevini. No trademarks or intellectual property of Brevini are reproduced or infringed. Our EP-PR3065 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| Aspect | Brevini PR3065 | EVER POWER EP-PR3065 |
|---|---|---|
| Price | OEM premium | Competitive |
| Lead Time | 6-12 weeks | 2-4 weeks |
| Gear Accuracy | ISO class 5 | ISO class 4 standard |
| Bearing Pre-load | Not standard | P4 pre-loaded std |
| Warranty | 12 months | 18 months |
EVER POWER also supplies matched electric and hydraulic motors for complete drive system packages. Enquire about motor pairing.
Quality Certifications and Service Commitment
- ISO 9001:2015 certified manufacturing and quality management.
- CE Marking ?? EU Machinery Directive 2006/42/EC compliant.
- 18-month warranty from shipment date on all EP-PR3065 units.
- Technical response within 48 hours for field issues.
- Spare parts and seal kits stocked for rapid dispatch.
Learn more at EVER POWER About Us.
Case Studies ?? Engineer Field Notes
| Country | Application | Feedback |
|---|---|---|
| Netherlands | Semiconductor wafer handler rotation axis | “ISO class 4 accuracy was mandatory for our wafer positioning spec. EVER POWER provided full gear inspection reports. Positioning error was within spec from day one.” ?? Mechanical Lead, Eindhoven. |
| Japan | MRI table drive, medical imaging manufacturer | “Ultra-quiet operation is non-negotiable in a scan room. The two helical stages made the drive essentially inaudible to the patient.” ?? Product Engineer, Nagoya. |
| UK | Precision foil winding machine, speciality film plant | “Pre-loaded bearings solved the axial play problem we had with our previous supplier’s unit. Winding tension consistency improved immediately.” ?? Process Engineer, Birmingham. |
Frequently Asked Questions
Q: What is the difference between EP-RPR2065 and EP-PR3065?
A: The EP-RPR2065 is a 2-stage unit providing up to 70:1 ratio and 6,500 Nm. The EP-PR3065 is a 3-stage unit with up to 120:1 ratio and 11,000 Nm ?? used when higher reduction or torque is needed in the same general size class.
Q: Are gear inspection reports available for quality-critical applications?
A: Yes. Full gear profile inspection reports to DIN/ISO standard are available for any unit on request.
Partner With EVER POWER
EVER POWER supports OEM machine builders, engineering contractors and maintenance teams worldwide. Browse our full replacement range, explore our manufacturing capabilities, or contact us today for a fast quotation. Visit planetary-gear-box.top for the complete EVER POWER portfolio.
