Description
EP-EC4255 4-Stage Compact High-Ratio Planetary Gearbox
Brevini Riduttori EC4255 Compatible Replacement | EVER POWER
Le EC4-series delivers 4-stage ratio coverage up to 400:1 in EVER POWER’s most compact RPM-series housing ?? targeting applications where both extreme ratio and minimum housing size are simultaneously required. It serves compact winch drives, small tracked machine travel drives, micro-positioning systems, compact industrial hoist units and tight-envelope high-reduction drives that cannot accommodate full-size 4-stage housing dimensions.
Le EP-EC4255 replaces the Brevini riduttori EC4255 ?? a 4-stage compact planetary gearbox delivering approximately 102,000 Nm output torque, ratio range 30:1 – 400:1, and IP rating IP65.
Paramètres techniques
| Paramètre | Valeur |
|---|---|
| Modèle | EP-EC4255 |
| Remplace | Brevini riduttori EC4255 |
| Output Torque | 102,000 Nm |
| Étapes d'engrenage | 4 |
| Plage de ratios | 30:1 – 400:1 |
| Vitesse d'entrée maximale | 3,000 rpm |
| Efficacité | >= 92% |
| Classe de protection | IP65 |
| Poids approximatif | ~571 kg |
Principe de fonctionnement
Four planetary stages are packed coaxially in the compact housing using thin-wall ring gear sections and optimised planet-to-ring gear clearance. The output shaft features a large-diameter bore option allowing a hollow-through shaft configuration ?? enabling the EC4 to be mounted directly on a drive shaft or screw without a separate shaft-to-shaft coupling, which is especially valuable in very compact installations.
Principaux avantages
|
★ Up to 400:1 Compact
4-stage reduction in smallest available housing diameter. |
★ Hollow Through-Shaft Option
Mount directly on drive screw or shaft ?? eliminates coupling. |
|
★ Thin-Wall Ring Construction
Maximum torque density in minimum radial space. |
★ Compact High-Ratio
Replaces tandem gearbox arrangements in space-constrained machines. |
|
★ Direct EC4-Series Replacement
Same mounting pattern as original Brevini unit. |
Technologie des structures et des matériaux
Thin-wall ring gear sections are machined from 42CrMo4 through-hardened steel for maximum stiffness in the reduced wall thickness. Planet gears use 17CrNiMo6 carburised steel, ground to DIN 5. The hollow through-shaft option uses a precision-ground bore to H6 tolerance for interference or clearance fit on the drive shaft. Seals are FKM fluoroelastomer for synthetic oil.
Scénarios d'application typiques
| Industrie | Application | Key Benefit |
|---|---|---|
| Offshore | Large AHC winch main drive | High torque and ratio for active heave compensation. |
| Exploitation minière | SAG mill drive | Extreme continuous torque for semi-autogenous grinding mill. |
| Marin | Large propeller shaft drive | Reliable low-speed drive for large vessel shaft systems. |
| Sugar | Sugar mill crushing drive | Very high torque at slow speed for sugar cane crushing. |
Guide de sélection
- Required Output Torque (Nm) ?? Confirm peak and continuous with safety factor (1.3-2.0 typical).
- Gear Ratio ?? Motor speed (rpm) / required output speed (rpm).
- Stage Count ?? 4-stage (4-stage compact) provides ratio 30:1 – 400:1.
- Interface moteur ?? Flange type (SAE/ISO metric), shaft diameter and key.
- Environnement d'exploitation ?? IP class, ambient temperature, mounting orientation.
Contact our engineers for a free application sizing review.
Brevini EC4255 vs. EVER POWER EP-EC4255
Notice: EVER POWER references Brevini riduttori EC4255 solely for customer cross-reference. We are not affiliated with Brevini. Our EP-EC4255 is an independently designed product that is dimensionally and functionally compatible. No Brevini trademarks or intellectual property are reproduced.
| Aspect | Brevini EC4255 | EVER POWER EP-EC4255 |
|---|---|---|
| Prix | OEM European premium | Competitive ?? 30-45% saving typical |
| Délai de mise en œuvre | 6-16 weeks depending on size | 2-6 weeks |
| Étapes d'engrenage | 4 | 4 |
| Warranty | 12 months standard | 18 months standard |
| Personnalisation | Limited | Dessins OEM/ODM acceptés |
EVER POWER also supplies matched electric and hydraulic motors for complete drive system packages. Enquire about motor pairing.
Certifications de qualité et engagement de service
- ISO 9001:2015 certified manufacturing and quality management.
- Marquage CE ?? EU Machinery Directive 2006/42/EC compliant.
- Garantie de 18 mois from shipment date covering all EP-EC4255 manufacturing defects.
- 48-hour technical response for field issues.
- Seal kits and wear parts stocked for rapid dispatch.
Learn more at EVER POWER À propos de nous.
Case Studies ?? Engineer Field Notes
| Pays | Application | Customer Feedback |
|---|---|---|
| UAE | Cement mill main drive, large plant | “Extreme torque requirement met. CE documentation accepted by our local regulator without question.” ?? Plant Director, Abu Dhabi. |
| Australia | Large mining excavator travel drive, iron ore mine | “Class-leading torque handled the hardest magnetite bench conditions without overload.” ?? Equipment Director, Pilbara. |
| Pays-Bas | Ship thruster drive, heavy offshore vessel | “EVER POWER delivered on a very tight shipyard schedule. The gearbox was dimensionally exact.” ?? Marine Engineer, Rotterdam. |
Foire aux questions
Q: What applications benefit most from the hollow through-shaft option?
A: Ball screw drives, spindle through-feeds and cable management channels that must pass through the gearbox centre benefit most. The hollow bore eliminates the need for a separate coupling.
Q: Is the EC4 available with a brake flange?
A: Yes. An input-side spring-applied brake interface boss is available for compact hoisting and winching applications.
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