EP-S Series Industrial Inline Planetary Gearbox
Covering a nominal output torque range from 34,000 Nm to 2,170,000 Nm, the EP-S Series Industrial Planetary Gearbox is engineered for operations where space constraints are critical yet power requirements remain uncompromising. Can be the replacements of the Brevini Riduttori S300, S400, S600, S1200, S1800, S2500, S3500, S5000, and S7500 gearbox series.
Every EP-S Series Industrial Inline Planetary Gearbox unit leaves our facility only after completing rigorous quality inspections aligned with ISO 9001 standards.
1. Technical Specifications of EP-S Series Industrial Inline Planetary Gearbox
| EP-Size | Torque 10.000 h [Nm] | Max Torque [Nm] |
| EP-S300 | 34.000 | 76.000 |
| EP-S400 | 40.000 | 84.000 |
| EP-S600 | 63.000 | 140.000 |
| EP-S850 | 88.000 | 195.000 |
| EP-S1.200 | 120.000 | 293.000 |
| EP-S1.800 | 168.000 | 390.000 |
| EP-S2.500 | 300.000 | 570.000 |
| EP-S3.500 | 430.000 | 810.000 |
| EP-S5.000 | 490.000 | 1.100.000 |
| EP-S7.500 | 712.000 | 1.800.000 |
| EP-S10.000 | 1.035.000 | 2.600.000 |
| EP-S15.000 | 1.500.000 | 3.750.000 |
| EP-S20.000 | 2.170.000 | 5.400.000 |
* Note: All values represent standard configurations; engineered-to-order variants may extend beyond these boundaries upon request.
| Parameter | Specification |
|---|---|
| Nominal Output Torque | 34,000 Nm — 2,170,000 Nm |
| Maximum Peak Torque | Up to 5,400,000 Nm (project-specific) |
| Transmission Ratio | 4:1 to 4,000:1 (multi-stage) |
| Number of Reduction Stages | 1 to 6 planetary stages |
| Gear Unit Version | Inline (coaxial); Right-angle option with Gleason bevel pair |
| Output Shaft Types | Solid keyed shaft, splined shaft, hollow shaft with shrink disc, splined hollow shaft |
| Mounting Configuration | Foot mount, flange mount, shaft mount |
| Input Configuration | IEC motor adaptor, solid input shaft, hydraulic motor flange |
| Brake Options | Negative multi-disc parking brake (DC / AC); Hydraulic fail-safe brake |
| Certifications | ISO 9001, DNV type approval, ABS PDA (on request) |
| Gear Design Standard | ISO 6336 (spur and helical gear load capacity) |
| Lubrication | Oil splash or forced lubrication; oil cooling coil optional |
| Max. Operating Oil Temperature | 80 °C (VG 150 mineral oil standard) |
| Replacement Compatibility | Brevini Riduttori S300, S400, S600, S1200, S1800, S2500, S3500, S5000, S7500 |
| Available Accessories | Balance valves, shuttle valves, distributor blocks, adapter flanges, shrink disc covers |
2. Five Key Advantages of the EP-S Series
01 — Extreme Torque Density
The EP-S Series Industrial Inline Planetary Gearbox achieves output torques from 34,000 Nm up to 2,170,000 Nm within a compact inline profile. This allows machinery designers to specify a high-power drivetrain without dedicating excessive structural volume or adding unnecessary mass to the overall system, a critical advantage in mobile equipment and space-limited plant installations.
02 — Modular Design Architecture
A fully modular configuration means the EP-S Series Industrial Inline Planetary Gearbox can be adapted to virtually any input or output requirement using standard, stocked components. Input options include IEC-normalized motor adaptors for electric motors, solid input shafts for direct coupling, and hydraulic motor flanges. Output configurations encompass keyed shafts, splined shafts, hollow shafts with shrink discs, and flange-mount variants.
03 — Space & Weight Reduction
When replacing traditional spiral bevel or helical gear solutions, the EP-S Series Industrial Inline Planetary Gearbox delivers a typical space and weight saving of 40% to 60%. For OEMs designing equipment for the Colombian mining sector or port handling operations, this reduction directly translates into lower structural costs, reduced crane dead weights, and improved system energy efficiency.
04 — Multi-Certification Compliance
The EP-S Series is manufactured and designed with gears calculated to ISO 6336, the international standard for load capacity of spur and helical gears. The product range holds DNV type approval, enabling direct use on marine vessels and offshore structures. Additional certifications — such as ABS Product Design Assessment — can be obtained on a case-by-case basis to meet specific project or regional authority requirements.
05 — Broad Accessory Compatibility
All EP-S Series Industrial Inline Planetary Gearbox units can be equipped with negative multi-disc parking brakes, balance valves, shuttle valves, integrated distributor blocks, and a wide selection of adapter flanges. This accessory ecosystem makes the EP-S Series Industrial Inline Planetary Gearbox a genuinely complete drivetrain building block, reducing integration complexity for machine builders who need a tested, reliable inline planetary gearbox solution ready for immediate deployment.
3. How Does a Planetary Gearbox Work
The EP-S Series Industrial Inline Planetary Gearbox operates on the classic epicyclic gear arrangement: a central sun gear receives the input rotation from the motor or prime mover. Surrounding the sun gear are three or more planet gears that mesh simultaneously with both the sun and a fixed outer ring gear (annulus). The planet gears are carried by a rotating planet carrier, which forms the output stage of each reduction step.
Because multiple planet gears share the transmitted load at the same time, the torque is distributed across several contact points rather than concentrated at one meshing pair as in a standard parallel-shaft arrangement. This is why the inline planetary gearbox achieves its remarkable torque density — the stress per tooth is dramatically lower, which allows a much smaller housing to contain the same transmitted power. The EP-S Series Industrial Inline Planetary Gearbox can be built with one, two, three, or more planetary reduction stages in series, each stage adding a multiplication of the gear ratio.
The inline configuration means that input and output shafts share the same axis of rotation. This coaxial layout simplifies machine frame design and keeps the transmission envelope narrow — an attribute particularly valued in conveyor drives, mixer applications, and drum winches where lateral space is restricted. The sun–planet–ring load-sharing mechanism also reduces vibration and noise, contributing to longer bearing and gear life under sustained operation.
4. Materials & Construction Quality
The gear teeth are precision-cut from high-alloy case-hardening steel, typically 20MnCr5 or equivalent, then carburized and surface-hardened to achieve tooth-flank hardness in the range of 58–62 HRC. This hardened tooth surface dramatically reduces wear rate and extends service intervals, which is of particular value in continuous-duty applications such as aggregate conveyors or paper mill drives where access for maintenance is restricted. All gear geometry is verified on coordinate measuring machines to confirm compliance with DIN 3962 accuracy grades.
The planet carrier and ring gear housings are produced from nodular cast iron (GGG-50/GGG-60) or fabricated steel plate for the largest frame sizes, providing excellent vibration damping while keeping structural mass manageable. Main output shaft bearings are selected from heavy-duty spherical or tapered roller bearing series to handle both the radial loads from external sheave or sprocket drives and the axial thrust generated by helical tooth engagement. All dynamic sealing is performed using multi-lip rotary shaft seals rated for the full operating temperature range of the unit, and static joint faces are sealed with RTV silicone compounds to eliminate the chronic leakage problems sometimes encountered with older compressed-fibre gasket designs.
The external housing surfaces are shot-blasted to Sa 2.5 cleanliness and finished with a two-coat industrial epoxy primer plus topcoat system, providing resistance to the humid and saline atmospheric conditions common in Colombian Pacific coast industrial facilities and port environments.
5. Application Scenarios
The EP-S inline planetary gearbox is suited to any application where high torque must be delivered within a compact, coaxial drivetrain envelope. Below are the principal industry sectors and machine types where the EP-S Series excels.
Mining & Quarrying
Large-diameter drum drives for underground conveyor systems, bucket elevator bases, and slurry pump drives are among the most demanding inline planetary gearbox applications in the mining sector. The EP-S Series Industrial Inline Planetary Gearbox handles shock loads, frequent start-stop cycles, and the abrasive dust environments typical of open-pit coal and gold mining operations common across Colombia's Andean and Caribbean regions.
Port & Marine Handling
Container crane hoisting mechanisms, RTG crane travel drives, and shipyard slipway winches require gearboxes with DNV or ABS certification and the ability to withstand constant salt-air exposure. The EP-S Series Industrial Inline Planetary Gearbox DNV type-approved range is a direct fit for these applications, meeting the stringent safety and reliability requirements imposed by port authority regulations in Cartagena, Buenaventura, and Barranquilla.
Cement & Aggregate Processing
Kiln drives, raw mill main drives, and clinker conveyor systems consume enormous torques continuously over years of operation. The EP-S multi-stage inline planetary gearbox design sustains nominal torques to 2,170,000 Nm with optimized heat dissipation, allowing cement plant operators to specify reliable, low-maintenance drivetrain solutions that minimize costly production stoppages.
Renewable Energy
Wind turbine pitch and yaw control drives rely on compact, high-reduction planetary gearboxes that must operate reliably through millions of cycles in remote locations without frequent servicing. The EP-S Series Industrial Inline Planetary Gearbox satisfies these requirements with hardened gearing, sealed lubrication, and integrated parking brakes that hold structural positions safely during maintenance windows.
Pulp & Paper
Digester agitators, stock chest mixers, and calendar roll drives in pulp and paper mills require gearboxes that operate in high-humidity, chemical-rich environments while maintaining precise output speeds. The EP-S Series Industrial Inline Planetary Gearbox sealing system and chemically resistant paint finish make it well-suited for continuous duty in these process-critical machines.
Material Recycling & Waste Processing
Industrial shredders, drum screens, and baling press main drives operate under highly variable shock-load conditions. The EP-S Series Industrial Inline Planetary Gearbox design distributes instantaneous peak torques across multiple gear meshes simultaneously, protecting internal components and extending gear life far beyond what a conventional parallel-shaft reducer could achieve in the same application.
6. Regulatory & Compliance Framework
Industrial mechanical power transmission equipment — including inline planetary gearboxes — is subject to a range of national and international regulations that govern design, manufacture, installation, and operation. Understanding these obligations is important for procurement engineers and plant managers sourcing equipment for Colombian and international projects.
Colombia: The primary regulatory framework for industrial machinery in Colombia is issued through the Ministerio de Trabajo and references NTC (Normas Técnicas Colombianas) standards coordinated by ICONTEC. For mechanical power transmission equipment installed in workplaces, compliance with NTC 2050 (Colombia's National Electrical Code equivalent for general occupational safety) and the requirements of Resolución 0312 de 2019 (which defines minimum occupational health and safety management system standards) are broadly applicable. Industrial equipment suppliers must also meet the import and product certification requirements of the Superintendencia de Industria y Comercio (SIC) for CE-marked machinery entering the Colombian market.
European Union: Any inline planetary gearbox installed in machinery sold in the EU must comply with the Machinery Directive 2006/42/EC (being progressively replaced by the Machinery Regulation EU 2023/1230, with full application from January 2027). Gear units forming part of a complete machine must contribute to the safety assessment under EN ISO 12100. The EP-S Series Industrial Inline Planetary Gearbox gearing is calculated according to ISO 6336, which facilitates CE marking of the complete machine by the OEM integrator.
United States & Canada: OSHA 29 CFR 1910.217 and ANSI/AGMA standards govern gear unit design quality and guarding requirements for power transmission components in US workplaces. Canadian requirements parallel these through CSA Z432 safeguarding of machinery provisions. The EP-S Series Industrial Inline Planetary Gearbox conforms to AGMA 9000 series quality designations by virtue of its ISO 6336-compliant gear design.
Marine Applications: Gearboxes installed on commercial vessels or offshore platforms must meet the applicable class society rules. DNV-ST-0378 (Offshore and Marine Wind Turbines) and DNV class rules for ship machinery are the most widely referenced. The EP-S Series Industrial Inline Planetary Gearbox range carries DNV type approval, and project-specific ABS Product Design Assessments are also available. IMO guidelines under SOLAS Chapter II-1 for essential machinery reliability also apply to propulsion and cargo-handling drive components aboard vessels.
Brazil & Latin America: Brazil's ABNT NBR standards (particularly ABNT NBR NM 272 for machinery safety) are relevant to equipment imported or manufactured for the Brazilian market. For the broader Andean Community (Colombia, Peru, Ecuador, Bolivia), the Comunidad Andina's Decisión 584 on occupational safety sets the baseline framework, supplemented by each member state's domestic regulations.
7. About Us
We are a specialized inline planetary gearbox manufacturer with deep roots in the design and production of planetary gearbox solutions for global industry. Our engineering team has accumulated extensive application experience across the mining, port handling, cement, energy, and marine sectors. We operate fully-equipped manufacturing facilities with modern CNC gear-cutting machines, heat treatment furnaces, and precision metrology equipment, allowing us to maintain tight dimensional tolerances throughout the production process.
Our quality management system is certified to ISO 9001 and underpins a structured approach to product traceability, incoming material inspection, in-process control, and final acceptance testing. All EP-S Series Industrial Inline Planetary Gearbox undergo no-load and, where specified, full-load testing before dispatch, with test certificates issued as standard. We serve customers across Colombia, the wider Latin American region, Europe, Southeast Asia, and the Middle East, delivering both standard stocked units and fully engineered special designs with competitive lead times.
Workshop
8. Related Products & One-Stop Supply
To maximize system compatibility and simplify your supply chain, we offer complementary drivetrain components that integrate seamlessly with the EP-S Series Industrial Inline Planetary Gearbox. Sourcing your gearbox, input shaft coupling, and auxiliary drive components from a single supplier eliminates interface mismatch risks and ensures warranty continuity across the complete drivetrain assembly.
Drive Motor
Frequently Asked Questions
Q1. What is the best EP-S Series Industrial Inline Planetary Gearbox for high-torque conveyor applications in a Colombian mining facility?
The EP-S Series Industrial Inline Planetary Gearbox is specifically designed for high-torque, continuous-duty conveyor drive applications in demanding environments such as open-pit mining operations. Depending on your conveyor belt width and design tension, models in the EP-S600 to EP-S3500 range typically cover most main conveyor drive requirements. Our engineering team can perform a full torque and service factor analysis based on your conveyor parameters to confirm the appropriate model size.
Q2. How does an inline planetary gearbox differ from a standard helical gearbox, and which should I choose?
An inline planetary gearbox uses an epicyclic gear arrangement where the load is shared across multiple planet gears simultaneously. This gives it a significantly higher torque-to-weight ratio and a coaxial (inline) input-output shaft arrangement. A conventional helical gearbox uses parallel offset shafts, which results in a larger, heavier unit for the same output torque. For applications where space, weight, and high torque density are priorities — such as crane drives, mill drives, and winch systems — the inline planetary design is generally the better engineering choice.
Q3. Are customized inline planetary gearbox designs available for non-standard ratios or special output shaft arrangements in the Latin American market?
Yes. The EP-S Series Industrial Inline Planetary Gearbox modular architecture is specifically designed to accommodate semi-custom configurations built from standard components, keeping lead times and cost increases to a minimum. Non-standard gear ratios outside the catalogue range, special output shaft configurations, custom flange bolt patterns, and specific surface protection requirements for corrosive environments can all be accommodated. Fully engineered special designs requiring new housing configurations are also possible for high-volume or strategically important project requirements. Contact our engineering department with your specific requirements for a feasibility assessment.
Q4. Can the EP-S Series Industrial Inline Planetary Gearbox directly replace a Brevini S Series unit without modifying the machine frame?
Yes. The EP-S Series Industrial Inline Planetary Gearbox is dimensionally compatible with the Brevini Riduttori S300, S400, S600, S1200, S1800, S2500, S3500, S5000, and S7500 model series. Mounting flange bolt patterns, shaft dimensions, and overall envelope measurements are matched to allow direct interchangeability in most existing machine installations. Please share your existing mounting drawings with our team so we can verify dimensional compatibility before ordering.
Q5. What certifications does the EP-S inline planetary gearbox carry, and are these accepted by Colombian port authorities?
The EP-S Series Industrial Inline Planetary Gearbox holds ISO 9001 quality management certification and DNV type approval for marine and offshore applications. DNV certification is internationally recognized and accepted by the port authorities in Cartagena de Indias, Buenaventura, and Barranquilla for crane and cargo-handling equipment. ABS Product Design Assessment certificates can additionally be obtained for specific projects requiring ABS class approval. We provide full certification documentation for all delivered units.
Q6. How many reduction stages does the EP-S Series offer, and what gear ratios are available for industrial mixer drives?
The EP-S Series Industrial Inline Planetary Gearbox platform supports one to six planetary reduction stages in series, delivering overall ratios from 4:1 up to 4,000:1 and above. For industrial agitator and mixer applications, which typically require ratios in the range of 20:1 to 200:1, a two- or three-stage EP-S configuration is normally sufficient. Higher ratios for slow rotary kilns or thickener drives are achieved by adding further reduction stages. Our application engineers will calculate the exact required ratio based on your motor speed and desired output rpm.
Q7. What is the typical service interval and maintenance requirement for an EP-S Series Industrial Inline Planetary Gearbox operating in a humid tropical climate like Colombia's coastal region?
Under standard operating conditions, the EP-S Series Industrial Inline Planetary Gearbox is designed for oil-change intervals of approximately 4,000 to 8,000 operating hours depending on duty cycle severity and oil type. In humid tropical environments, we recommend VG 150 mineral oil with anti-rust additives and enhanced demulsification properties. Seal inspection and external housing coating condition checks at each oil-change interval are advisable given the salt and moisture levels common in Colombia's Pacific coast and Caribbean port environments. Full maintenance documentation including oil volumes and torque specifications for all service fasteners is supplied with each unit.
Q8. Which output shaft configuration should I request when specifying an Industrial Inline Planetary Gearbox for a drum winch in a Colombian port?
For drum winch applications, a hollow output shaft with a shrink disc is generally the preferred configuration as it provides a rigid, backlash-free connection directly onto the winch drum shaft without requiring a coupling element. This eliminates a potential misalignment source and keeps the overall machine length compact. The EP-S Series Industrial Inline Planetary Gearbox offers shrink disc hollow shafts across the full model range. If your winch drum shaft features a splined connection instead, splined hollow shaft outputs are equally available.
Q9. When should I use an inline planetary gearbox versus a bevel helical gearbox for a right-angle drive application?
For pure right-angle drives — where input and output must be at 90° — a bevel helical gearbox or a combined bevel-planetary unit is typically the right choice. The EP-S Series Industrial Inline Planetary Gearbox itself is available as a High Power version combining a Gleason-type bevel gear pair with an inline planetary output stage, offering the quiet, thermally efficient characteristics of a helical input with the torque density of the planetary output. This hybrid configuration is often the preferred solution for high-power mill drives requiring both a right-angle input and a very high output torque within a compact envelope.
Editor: PXY
