Siemens Building Technology 331-947 Link Kit #3, 4, 6 Rod Ball Joint & Crank

Description

The Siemens Building Technology 331-947 is a precision-engineered linkage kit designed to provide reliable mechanical connections between actuators and damper or valve assemblies in commercial HVAC and building automation systems. This kit covers Link Kit configurations #3, #4, and #6, and includes the rod ball joint and crank components necessary for proper actuator-to-load coupling.

Product Overview

The 331-947 Link Kit is a genuine Siemens Building Technology replacement and installation accessory, engineered to maintain accurate positioning and smooth mechanical transmission between actuators and their controlled loads. The rod ball joint allows for angular misalignment compensation, reducing stress on the actuator shaft and extending service life. The crank component translates rotary actuator motion into the appropriate linear or angular displacement required by the connected damper blade or valve stem.

Key Features

• Covers Link Kit configurations #3, #4, and #6 for broad application compatibility
• Includes rod ball joint for flexible, misalignment-tolerant connections
• Crank component for converting rotary actuator motion to linear or angular movement
• Genuine Siemens Building Technology part for assured fit and performance
• Designed for use with compatible Siemens actuators in commercial HVAC systems
• Supports reliable, repeatable actuator positioning in building automation applications
• Durable construction for long-term service in demanding mechanical environments

Applications

• Damper actuator linkage in air handling units and VAV systems
• Valve actuator linkage in hydronic heating and cooling systems
• Building automation and control system (BAS/BCS) mechanical interfaces
• Replacement or upgrade of worn or damaged linkage hardware on Siemens actuator installations

Why Choose Siemens Building Technology

Siemens Building Technology is a globally recognized leader in HVAC controls, actuators, and building automation solutions. Their linkage accessories are manufactured to precise tolerances, ensuring consistent performance and compatibility with Siemens actuator product lines. Using genuine OEM linkage components helps maintain system accuracy, reduces maintenance callbacks, and protects warranty coverage on installed equipment.