Innovative solutions for cooling technology

Large industrial fan drives

Cooling or capturing air?

We have your dedicated fan drive solution!

Large industrial fan drives are indispensable in a wide range of industries, serving as the backbone for efficient thermal management and air movement. These systems are designed to meet diverse operational needs, whether cooling steam, water, or other fluids for reuse, ensuring compliance with environmental regulations, or facilitating air capture for innovative applications.

Tailored Fan Drive Solutions for

Wet Cooling Towers (WCT)

Engineered for water-abundant areas, our durable and efficient drive trains power fans for effective heat exchange in extreme corrosive and humid atmospheres.

Air-Cooled Condensers (ACC)

Designed for dry regions, our robust drive trains operate large fans for efficient steam condensation, supporting water-saving and sustainable operations.

Direct Air Capturing (DAC)

Our reliable drive trains ensure precise control for fans used in CO₂ extraction, enabling advanced air-capturing systems.

Why Choose Our Solution?

Whether you require vertical or horizontal configurations, right-angle or parallel shaft gearboxes, our systems are custom-engineered to meet the demands of large fan drive applications.

Drive your system with confidence. Choose innovation, choose reliability, choose us.

Designed in accordance with Cooling Technology Institute (CTI) standards.
Optimized gear geometry in accordance with AGMA specifications.
Dedicated selection method taking starts and stops into account
Specifically developed design offers a cost-effective, robust & efficient solution
Proven reliability with over 30,000 installations worldwide.
Optional ATEX certification for hazardous environments.
High resistance in corrosive and extreme humidity environment

Vertical fan drives

INDUCED DRAFT - Right-Angle Shaft Gearboxes

Our Hansen M5CT/P4 right-angle 2-stage gearbox series is the ideal solution for vertical large fan drive applications such as wet cooling towers, air-cooled condensers, and direct air capturing systems. Designed for demanding environments, it offers exceptional performance, durability, and ease of maintenance, ensuring reliable operation even under extreme corrosive and humid conditions.

Reliable Lubrication System

Engineered for simplicity, the integrated lubrication system eliminates the need for external piping, enhancing reliability and reducing maintenance efforts.

Purpose-Built Housing Design

The robust housing design ensures smooth and efficient transmission of high axial loads from the cooling fan through the gearbox center bore. These loads are effectively directed toward the mounting feet, which are concentrically positioned with the output shaft for superior stability.

Extended Bearing Span

Featuring heavy-duty roller bearings, the gearbox provides strong shaft support, making it ideal for high-torque applications.

Effective Cooling Ribs

Strategically designed cooling ribs ensure optimal thermal power dissipation, allowing the gearbox to operate efficiently even in high-temperature conditions.

Cost-Efficient and Robust Design

With its low-maintenance design, the Hansen M5CT/P4 offers a cost-effective solution without compromising on durability or performance.

Specifications at a Glance

Right-Angle Shafts
12 Sizes Available:
Torque range of 2.6 – 108 kNm
2-Stage Gear Design:
Ratios from 3.55 to 22.4
Various Instrument & Accessory Options:
a.o condition monitoring for temperature, oil flow, and vibrations, enabling proactive maintenance.

Hansen M5CT

Hansen P4

Vertical fan drives

FORCED DRAFT - Parallel Shaft Gearboxes

The Hansen M4ACC parallel shaft gearbox is specifically designed to meet the demands of vertical fan drives in forced draft air-cooled condenser systems. With its compact and efficient design, it ensures reliable and cost-effective performance in even the harshest environments.

Vertical Fan Drive Diagram - Forced Draft

Compact and Robust Design

Engineered for durability and efficiency, reference to the optimized selection method taking the many start stops into account, the M4ACC delivers consistent performance while withstanding demanding conditions.

Alignment-Free Motor Connection

Equipped with a standard lantern housing, the gearbox allows an easy and precise motor connection directly on top of the unit, simplifying installation and enhancing system reliability.

High Efficiency and Quiet Operation

Proven gear geometry, designed for maximum load capacity, minimum losses and silent performance, the M4ACC optimizes energy usage, reducing operational costs while maintaining a quiet work environment.

Low Maintenance for Maximum Uptime

Example is the Leakage-Free Drywell as standard sealing at the low speed shaft. Built for reliability, the M4ACC requires minimal maintenance, helping you reduce downtime and operational expenses.

Tailored for Maintenance Safety

Available with an optional hydraulic brake system, the M4ACC ensures safety during maintenance activities, adding an extra layer of operational confidence.

Specifications at a Glance

Parallel Shafts
7 Sizes Available:
Torque range of 17 – 70 kNm
2-Stage Gear Design:
Ratios from 9 to 25
Various Instrument & Accessory Options:
a.o. features like a hydraulic brake system for added safety and convenience.

Hansen M4 ACC

Optional hydraulic brake system (patented)

The unique brake design for Hansen M4ACC gear units allows the user to safely slow down the gear unit and condenser fan, and keep them at standstill during maintenance activities in dry cooling towers.

Avoid the risk of personnel injury due to windmilling.

(Only available with M4ACC units)

Horizontal fan drives

VARIOUS COOLING APPLICATIONS

When it comes to horizontal fan drive systems in diverse cooling or airflow applications, the PARAMAX and Hansen P4 gearboxes deliver unmatched efficiency, durability, and versatility. Designed for challenging environments, these gearboxes are the perfect fit for cooling technologies like natural draft fan assistance, horizontal direct air capturing, and other industrial fan drive applications.

Versatile Configurations

Available in parallel and right-angle shaft designs, these gearboxes are adaptable to a wide range of applications, ensuring seamless integration into your system.

Unmatched Efficiency

Engineered for superior performance, PARAMAX and Hansen P4 gearboxes optimize energy use, delivering reliable and efficient operation in high-demand scenarios.

Durability in Harsh Environments

With robust construction and high-quality materials, these gearboxes excel under the most demanding conditions, providing long-lasting reliability.

Wide Torque and Ratio Range

Offering torque capabilities from 2.6 to 1100 kNm and a variety of single- and multi-stage ratio options, these gearboxes meet the requirements of both standard and specialized industrial applications.

Specifications at a Glance

Parallel and Right-Angle Shafts
Wide Torque Range: 2.6 – 1100 kNm
Flexible Design: Single- and multi-stage configurations with various ratios
Various options available: Condition monitoring temperatures, vibrations, backstops, ...

PARAMAX® 9000

Hansen P4 Single Stage

Our Gearbox Servicing

Replacement service and drop-in retrofit.

Replacing obsolete equipment can lead to costly downtime and dimensional issues.

We will easily retrofit your units via custom made transition base to match your existing footprint for easy drop-in.

Servicing

Complete drive package solutions

Motor + Frequency Drive + Gearbox + Couplings & Brake Systems

Sumitomo Drive Technologies provides comprehensive drive package solutions for fan drive applications. Our integrated systems include high-performance motors, frequency drives (VFD), gearboxes, couplings and brake systems, all engineered to work seamlessly together for optimal efficiency and reliability.

End-to-End Solutions:
Everything you need for your fan drive system in one package.
Optimized Performance:
Each component is designed for peak efficiency and long-lasting reliability.
Flexibility:
Customizable solutions tailored to your specific application needs.
Proven Quality:
Trusted by industries worldwide for superior performance.

Choose Sumitomo Drive Technologies for a fully integrated, reliable fan drive system that ensures smooth, efficient operation.

Drive package solutions