説明
EP-RPR3250 Planetary Gearbox
EVER POWER 3-Stage 42,000 Nm Planetary Gearbox with Ultra-High Ratio
The EP-RPR3250 raises output torque to 42,000 Nm and extends ratio coverage to 200:1 by adding a third stage to the RPR250 housing. Replacing the Brevini riduttori RPR3250, this unit covers the most demanding segment of the RPR250 size class ?? slow-speed heavy crane drives, large offshore mooring winch main drives, heavy mixer main drives and industrial kiln drives where very high torque and very slow output speed are simultaneously required.
技術仕様
| パラメータ | 価値 |
|---|---|
| モデル | EP-RPR3250 |
| 交換する | Brevini riduttori RPR3250 |
| Max Output Torque | 42,000 Nm |
| ギアステージ | 3 |
| 比率範囲 | 28:1 – 200:1 |
| 最大入力速度 | 2,500 rpm |
| 保護等級 | IP66 |
| おおよその重量 | ~95 kg |
動作原理
The 3-stage architecture provides a cumulative 200:1 ratio from a single housing. The 4-planet output carrier distributes final stage torque across four simultaneous contact points rather than the standard three, reducing per-tooth stress by 25% at 42,000 Nm. A dual lip seal with intermediate grease pocket at the output shaft provides redundant sealing against the high-viscosity gear oils used at this torque class.
主な利点
|
▲ 200:1 Ultra-High Ratio
Single housing replaces tandem gearbox arrangements for extreme reduction ratios. |
▲ 4-Planet Output Stage
25% lower tooth stress ?? extended fatigue life under repeated peak loads. |
|
▲ VAR Steel Output Stage
Aircraft-grade steel in output gears ?? maximum fatigue life at 42,000 Nm. |
▲ Dual Lip + Grease Pocket
Redundant output shaft sealing for long seal life with high-viscosity oils. |
|
▲ Direct RPR3250 Replacement
Same flange and port layout. |
構造と材料技術
Output stage planet gears use 18CrNiMo7-6 vacuum-arc-remelted (VAR) steel ?? the highest available grade ?? for maximum fatigue life at 42,000 Nm. Housing is GGG70 nodular iron with shot-peened bore zones for improved fatigue resistance. External coating is C5M marine epoxy (720-hour salt spray) for offshore and coastal installations.
典型的なアプリケーションシナリオ
| 業界 | 応用 | Key Requirement |
|---|---|---|
| Crane | Heavy slewing crane main travel drive | 200:1 ratio allows low-speed precise positioning with standard large hydraulic motor. |
| オフショア | Mooring winch main drive | 4-planet output stage handles repeated peak mooring loads without tooth damage. |
| Industrial | Large industrial kiln drive | Very slow rotation (1-3 rpm) of multi-tonne kiln shell requires 200:1 ratio. |
| Mixing | Large industrial agitator | 42,000 Nm handles thick material mixing without stall at startup. |
選択ガイド
- 必要出力トルク（Nm） ?? Confirm peak and continuous torque requirement with appropriate safety factor.
- ギア比 ?? Motor speed (rpm) divided by required output speed (rpm).
- Duty Cycle ?? Continuous S1 or intermittent S3/S6; affects thermal de-rating.
- モーターインターフェース ?? 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 RPR3250 vs. EVER POWER EP-RPR3250
重要なお知らせ： EVER POWER references the Brevini riduttori RPR3250 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-RPR3250 is an independently designed and manufactured product that is dimensionally and functionally compatible.
| 側面 | Brevini RPR3250 | EVER POWER EP-RPR3250 |
|---|---|---|
| 価格 | High OEM rate | Competitive |
| リードタイム | 10-18 weeks | 4-6 weeks |
| Output Stage Steel | Standard alloy | VAR steel standard |
| Max Ratio | Standard | 200:1 single unit |
| 保証 | 12 months | 18 months |
EVER POWERは供給も行っています matched electric and hydraulic motors 完全なドライブシステムパッケージ向け。 Enquire about motor pairing.
品質認証とサービスへの取り組み
- ISO 9001:2015 certified manufacturing and quality management.
- CEマーキング ?? EU Machinery Directive 2006/42/EC compliant.
- 18ヶ月保証 from shipment date on all EP-RPR3250 units.
- Technical response within 48 hours for field issues.
- Spare parts and seal kits stocked for rapid dispatch.
Learn more at エバーパワーについて.
Case Studies ?? Engineer Field Notes
| 国 | 応用 | Feedback |
|---|---|---|
| UAE | Heavy slewing crane main drive, construction port | “200:1 ratio in a single housing eliminated the two-stage gearbox arrangement we had before. Space saving on the crane deck was considerable.” ?? Project Engineer, Abu Dhabi. |
| ノルウェー | Offshore mooring winch, PSV conversion | “4-planet output stage has handled repeated peak mooring loads that destroyed our previous 3-planet unit. 14 months and counting with no failures.” ?? Chief Engineer, Bergen. |
| Germany | Large industrial kiln drive, cement plant | “VAR steel documentation was required by our process insurance auditor. EVER POWER provided the full melt certificate within 5 days.” ?? Technical Manager, Dusseldorf. |
よくある質問
Q: Can a standard 3-planet output stage be specified to reduce cost?
A: Yes. A standard 3-planet output variant is available at reduced cost ?? recommended for intermittent duty applications where peak torque is less frequent.
Q: Is the VAR steel documentation available for third-party audits?
A: Yes. Full melt traceability certificates are provided with every EP-RPR3250 as standard.
EVER POWERと提携しましょう
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.
