Description
EP-EC4155 4-Stage Compact High-Ratio Planetary Gearbox
Brevini Riduttori EC4155 Compatible Replacement | EVER POWER
The 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.
The EP-EC4155 replaces the Brevini riduttori EC4155 ?? a 4-stage compact planetary gearbox delivering approximately 51,000 Nm output torque, ratio range 30:1 – 400:1, and IP rating IP65.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-EC4155 |
| Replaces | Brevini riduttori EC4155 |
| Output Torque | 51,000 Nm |
| Gear Stages | 4 |
| Ratio Range | 30:1 – 400:1 |
| Max Input Speed | 3,000 rpm |
| Efficiency | >= 92% |
| Protection Class | IP65 |
| Approx. Weight | ~322 kg |
Working Principle
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.
Core Advantages
|
★ 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. |
Structure and Material Technology
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.
Typical Application Scenarios
| Industry | Application | Key Benefit |
|---|---|---|
| Offshore | Deck crane main drive | High torque for offshore crane main hoist and travel drives. |
| Paper | Large web tension drive | Precise torque for winding tension control on wide paper webs. |
| Mining | Large scraper conveyor | High starting torque for fully-loaded scraper chain conveyor. |
| Energy | Hydroelectric gate drive | Reliable slow-speed drive for large penstock gate actuation. |
Selection Guide
- 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.
- Motor Interface ?? Flange type (SAE/ISO metric), shaft diameter and key.
- Operating Environment ?? IP class, ambient temperature, mounting orientation.
Contact our engineers for a free application sizing review.
Brevini EC4155 vs. EVER POWER EP-EC4155
Notice: EVER POWER references Brevini riduttori EC4155 solely for customer cross-reference. We are not affiliated with Brevini. Our EP-EC4155 is an independently designed product that is dimensionally and functionally compatible. No Brevini trademarks or intellectual property are reproduced.
| Aspect | Brevini EC4155 | EVER POWER EP-EC4155 |
|---|---|---|
| Price | OEM European premium | Competitive ?? 30-45% saving typical |
| Lead Time | 6-16 weeks depending on size | 2-6 weeks |
| Gear Stages | 4 | 4 |
| Warranty | 12 months standard | 18 months standard |
| Customisation | Limited | OEM/ODM drawings accepted |
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 covering all EP-EC4155 manufacturing defects.
- 48-hour technical response for field issues.
- Seal kits and wear parts stocked for rapid dispatch.
Learn more at EVER POWER About Us.
Case Studies ?? Engineer Field Notes
| Country | Application | Customer Feedback |
|---|---|---|
| USA | Wind turbine yaw drive replacement, wind farm | “18-month warranty accepted by our turbine OEM. Zero failures across 12 units in first year.” ?? O&M Manager, Texas. |
| Germany | Large belt conveyor overland drive, mine | “Efficiency match with original spec confirmed on our test bench. Lead time was half of OEM.” ?? Technical Director, Cologne. |
| Chile | Vertical roller mill drive, cement plant | “Energy saving versus our previous inefficient gearbox was measurable on the monthly electricity bill.” ?? Plant Manager, Antofagasta. |
Frequently Asked 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.
Partner With EVER POWER
EVER POWER supports OEM machine builders and maintenance teams worldwide. Browse our full replacement range, explore our capabilities, or contact us today for a fast quotation. Visit planetary-gear-box.top.
