Description
EP-SC4003 3-Stage Inline Planetary Gearbox
Brevini Riduttori SC4003 Compatible Replacement | EVER POWER
The EP-SC4003 is EVER POWER’s independently engineered 3-stage inline planetary gearbox, designed as a direct replacement for the Brevini riduttori SC4003. Delivering approximately 4,000 Nm output torque with IP65 sealing and a mounting interface dimensionally compatible with the original Brevini unit, this gearbox serves industrial machinery, conveyor systems, mixer drives, material handling equipment and processing plant drives where reliable torque multiplication and long service life are essential. EVER POWER’s SC series compact planetary gearbox combines competitive pricing with 18-month warranty coverage and faster delivery than typical European OEM lead times.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | EP-SC4003 |
| Replaces | Brevini riduttori SC4003 |
| Output Torque (approx.) | 4,000 Nm |
| Gear Stages | 3 |
| Ratio Range | 20:1 – 200:1 |
| Max Input Speed | 4,000 |
| Efficiency | >= 94% |
| Protection Class | IP65 |
| Approx. Weight | ~33 kg |
| Housing Material | Ductile Iron GGG50 |
| Lubrication | Synthetic ISO VG 220 (oil-bath, factory filled) |
| Operating Temp. | -25 degC to +80 degC |
| Output Interface | Hollow bore or solid shaft (specify at order) |
Working Principle
The EP-SC403 operates on the epicyclic planetary gear principle. Three sequential planetary stages are coaxially arranged within the sealed housing. The input sun gear meshes simultaneously with multiple planet gears orbiting within a fixed ring gear, distributing the load across all contact points simultaneously. This load-sharing principle is why planetary units achieve significantly greater torque density than parallel-shaft designs of equivalent housing diameter. A precision-ground output shaft or hollow bore transmits the multiplied torque to the driven machine with minimal backlash.
Core Advantages
|
● 4,000 Nm Rated Torque
Full rated output torque for demanding continuous industrial duty cycles. |
▲ 3-stage Efficiency
Balanced efficiency and ratio range for the required application. |
|
◆ Brevini SC403 Direct Fit
Identical mounting dimensions — installs in original machine pocket without modification. |
◼ Oil-Bath Lubrication
Sealed oil-bath serves all mounting orientations — horizontal, vertical and inverted. |
|
★ 18-Month Warranty
EVER POWER’s 18-month warranty exceeds the 12-month standard of most European OEM suppliers. |
Structure and Material Technology
The housing is precision-cast from GGG50 ductile iron and machined to H7 bore tolerances. Planet gears are manufactured from 20CrMnTi case-hardening steel, carburised to 0.7-1.0 mm case depth and profile-ground to DIN 5 accuracy. The output shaft is supported by back-to-back tapered roller bearings pre-loaded at the factory for zero axial play under combined radial and axial loads. All external shaft seals are FKM fluoroelastomer rated for synthetic gear oil service at up to 120 degC. External coating is two-coat epoxy primer + polyurethane topcoat, 480-hour salt spray rated.
Typical Application Scenarios
| Industry | Application | Key Benefit |
|---|---|---|
| Automation | Servo-driven conveyor indexing | Low backlash ensures accurate step-and-repeat positioning. |
| Packaging | Robotic palletiser arm joint | High-speed servo input with smooth torque output. |
| Material Handling | AGV wheel drive unit | Compact body integrates into narrow wheel hub envelope. |
| Printing | Web tension control dancer roll | Precise speed regulation for consistent tension across wide web. |
Selection Guide
- Required Output Torque (Nm) — Confirm peak and continuous torque with safety factor of 1.3-2.0.
- Gear Ratio — Motor speed (rpm) / required output speed (rpm). Range: 20:1 – 200:1.
- Stage Count — 3-stage provides ratio range 20:1 – 200:1. Higher stages = higher ratio and lower efficiency.
- Motor Interface — Flange type (SAE / IEC metric), shaft diameter and keyway.
- IP Rating — IP65 is standard. IP67/IP68 upgrade available for washdown or outdoor service.
- Mounting Orientation — Horizontal, vertical or inverted; all supported with standard oil-bath lubrication.
- Operating Temperature — Standard -25 to +80 degC; Arctic and high-temp variants available.
Not sure which configuration fits your machine? Send us your machine datasheet for a free engineering review.
Brevini SC4003 vs. EVER POWER EP-SC4003
Important Notice: EVER POWER references the Brevini riduttori SC4003 model number solely to assist customers in identifying a compatible replacement. We are not affiliated with, authorised by, or connected to Brevini. Our EP-SC4003 is an independently designed product that is dimensionally and functionally compatible with the original. No Brevini trademarks or intellectual property are reproduced or infringed.
| Aspect | Brevini SC4003 | EVER POWER EP-SC4003 |
|---|---|---|
| Price | OEM premium — Italian/European manufacturer | Competitive — typically 30-45% lower |
| Lead Time | 8-16 weeks typical | 3-6 weeks standard |
| Mounting Dimensions | Original Brevini SC4003 specification | Fully compatible — direct bolt-in |
| Stage Count | 3 | 3 |
| Gear Ratio Range | 20:1 – 200:1 | 20:1 – 200:1 |
| Warranty | 12 months standard | 18 months standard |
| Customisation | Limited aftermarket options | OEM/ODM drawings accepted |
EVER POWER also supplies matched electric motors, servo motors and hydraulic motors for complete drive system packages. Enquire about complete motor and gearbox packages.
Quality Certifications and Service Commitment
- ISO 9001:2015 certified manufacturing and quality management system.
- CE Marking — EU Machinery Directive 2006/42/EC compliant.
- 18-month warranty from shipment date on all EP-SC4003 units.
- 48-hour technical response for field installation and commissioning issues.
- Spare seal kits, planet sets and bearing kits stocked for rapid dispatch.
- Third-party inspection (DNV GL, Bureau Veritas, SGS) available on request.
Learn about our quality standards at EVER POWER About Us.
Case Studies — Engineer Field Notes
| Country | Application | Customer Feedback |
|---|---|---|
| Germany | Servo conveyor drive, automotive assembly line, 6 units | “Drop-in replacement confirmed. No re-tuning of servo controllers needed. Running 10 months without issues.” — Production Engineer, Stuttgart. |
| Japan | Robotic palletiser joint drive, FMCG warehouse | “Low backlash matched our robot controller spec from day one. Cost saving versus OEM was decisive.” — Automation Engineer, Osaka. |
| USA | AGV wheel drive replacement, automotive factory | “Compact form factor fit our wheel hub without modification. 18-month warranty accepted by our quality team.” — Fleet Manager, Detroit. |
Frequently Asked Questions
Q: Is the EP series a direct dimensional replacement for Brevini SL/SC series?
A: Yes. EVER POWER EP-SL and EP-SC series units are manufactured with mounting dimensions fully compatible with the corresponding Brevini riduttori SL and SC specifications. No machine frame modification is required for direct replacement.
Q: What motor flange types are supported?
A: SAE-B 2-bolt and 4-bolt, SAE-C 2-bolt and 4-bolt, and IEC/ISO metric flanges are standard. Custom flanges for specific motor brands are available with 2-3 week lead time.
Partner With EVER POWER
Whether you need a single emergency replacement for a failed Brevini SC4003 or a long-term supply arrangement for your equipment fleet, EVER POWER delivers reliable planetary gearbox solutions at competitive prices with faster delivery than European OEM suppliers.
Browse our full Brevini replacement range, visit planetarygearboxes.net for the complete product portfolio, or contact our engineering team today for a fast quotation.
