DEUBLIN 1107-003-121 Rotary Union

The Deublin 1107-003-121 Rotary Union is a heavy-duty Monoflow unit engineered for the punishing duty cycles of forestry yarders and tower haulers. Designed to maintain high-pressure fluid integrity during rapid drum engagement, it is a critical component for safe and efficient cable logging operations in New Zealand’s toughest terrain.

Built for the Bush: Deublin 1107-003-121 for High-Tension Yarders

In the world of cable logging, your rotary unions are the "invisible" link that keeps your winch brakes and clutches responsive. The Deublin 1107-003-121 (1107 series) is specifically favored by NZ logging crews for its ability to handle the extreme heat and pressure spikes associated with heavy hauls and high-lead logging. Unlike standard industrial unions, the 1107 is built to survive the constant vibration and fine wood dust found on a working landing.

Whether you are operating a swing yarder or a traditional tower, the 1107-003-121 ensures that your control signals are delivered without lag or leakage. Its robust sealing technology is designed for longevity, reducing the risk of mid-shift failures that can sideline your entire operation. When your crew's safety and productivity depend on the tension of the line, the Deublin 1107 series provides the reliability required for the NZ forestry sector.

Yarder & Hauler Applications

The Deublin 1107-003-121 is primarily used in the control lines for drum clutches, winch brakes, and tensioning systems on forestry yarders. It is a compatible replacement part for many Madill, Thunderbird, and Brightwater haulers. Its corrosion-resistant design makes it ideally suited for mobile machinery that must perform in the high-humidity and variable weather conditions of New Zealand’s forest blocks.

Technical Specifications:

• Type: Monoflow

• Rotor Connection: 5/8"-18 UNF Right Hand (RH)

• Housing Connection: 1/4" NPT

• Media Compatibility: Air, Hydraulic Oil

• Max Air Pressure: 10 bar (150 PSI)

• Max Hydraulic Pressure: 70 bar (1,000 PSI)

• Max Speed: 3,500 RPM