HAGGLUNDS

Updated: 2026-09-12

Overview

HAGGLUNDS, a subsidiary of Bosch Rexroth, is a Swedish-origin brand renowned for its hydraulic drive systems. Founded in the early 20th century, it pioneered radial piston motor technology, offering solutions for high-torque, low-speed applications. Its products are integral to industries requiring robust power transmission, such as mining, offshore, and material handling. The brand’s reputation stems from its ability to deliver compact, energy-efficient motors that perform reliably in harsh environments. HAGGLUNDS systems are often customized to meet specific operational demands, making them a preferred choice for heavy-duty applications globally.

Structure and Working Principle

HAGGLUNDS motors operate on the radial piston principle, where pistons arranged radially around a central shaft generate torque through hydraulic pressure. This design ensures high power density and smooth operation, even at low speeds. The motors typically feature hardened steel components and advanced sealing systems to withstand heavy loads and contamination. The hydraulic fluid drives the pistons outward, creating rotational force transmitted to the output shaft. This mechanism allows precise control over speed and torque, making it ideal for applications like winches, conveyors, and crane drives. Modular designs enable easy integration with existing machinery.

Key Features

HAGGLUNDS motors are distinguished by their exceptional torque-to-size ratio, delivering up to 1 million Nm in compact units. Their robust construction includes corrosion-resistant materials, making them suitable for marine and offshore use. The motors also feature minimal internal leakage, enhancing energy efficiency. Additional advantages include low-speed stability (some models operate below 1 rpm) and high overload capacity. Many units are designed for maintenance-free operation, with self-lubricating bearings and replaceable wear parts. Customizable mounting options and shaft configurations further enhance versatility.

Application Areas

Primary industries utilizing HAGGLUNDS systems include mining (e.g., crushers, stackers), marine (thrusters, deck machinery), and construction (tunnel boring machines). Their ability to handle shock loads and variable speeds makes them ideal for heavy processing equipment like rollers and mixers. In renewable energy, these motors drive wind turbine yaw systems and tidal power generators. Offshore oil rigs rely on them for mooring winches due to their resistance to saltwater corrosion. The forestry sector uses them in log-handling equipment, leveraging their high torque for demanding operations.

Maintenance and Precautions

Regular maintenance includes monitoring hydraulic fluid quality, checking for leaks, and inspecting seals. Contaminated fluid can damage piston surfaces, so filtration systems are critical. Manufacturers recommend periodic flushing for systems exposed to abrasive particles. Avoid exceeding the motor’s rated pressure or speed, as this may cause premature wear. Storage should be in dry conditions, with shafts rotated periodically to prevent bearing corrosion. For marine applications, cathodic protection may be necessary to combat galvanic corrosion.

B2B Procurement Guide

When sourcing HAGGLUNDS products, verify certifications (e.g., ATEX for explosive environments) and ensure compatibility with your hydraulic system’s pressure and flow ratings. Lead times for custom configurations can range from weeks to months, so plan procurement accordingly. Consider total cost of ownership, including energy efficiency and maintenance needs. Authorized distributors provide technical support and warranty coverage, while gray-market purchases may lack these benefits. Request test reports for critical applications to confirm performance metrics.