Belimo K4-1 Us Jackshaft Clamp Actuator Accessory

Product Description

The BELIMO K4-1 US is a jackshaft clamp designed for use with Classic AF and NF series actuators. It provides a secure mechanical connection between the actuator and jackshaft, transmitting rotational force to damper or valve linkage assemblies. The clamp accommodates jackshaft diameters up to 1.05 inches, making it compatible with a range of shaft sizes commonly found in commercial and industrial HVAC applications. HVAC technicians and mechanical contractors install this accessory during actuator mounting and commissioning to ensure a rigid, slip-free shaft engagement.

This clamp is used in HVAC systems where BELIMO AF or NF series actuators are mounted to jackshafts for damper control. Typical applications include air handling units, VAV systems, and large commercial damper assemblies where multiple actuators or extended shaft linkages are required. The clamp is suited for both new installation and retrofit projects where actuator accessories need to be replaced or upgraded in the field.

Key Features

• Accommodates jackshaft diameters up to 1.05 inches
• Designed for use with BELIMO Classic AF and NF series actuators
• Provides rigid, slip-resistant shaft engagement for reliable torque transmission
• Suited for commercial and industrial damper control applications
• Field-installable accessory for new and retrofit actuator mounting

Compatibility

Designed for use with BELIMO Classic AF and NF series actuators on jackshaft installations up to 1.05 inches in diameter.

Installation Notes

Installation is typically performed by a licensed HVAC technician or mechanical contractor. De-energize the actuator and confirm the damper or valve system is in a safe position before mounting or adjusting the clamp. Ensure the jackshaft diameter is within the supported range before securing the clamp to avoid damage to the actuator shaft interface. Follow the actuator manufacturer instructions and applicable mechanical codes during installation.

Technical Specifications

• Type: Clamp
• Maximum Jackshaft Diameter: 1.05 inches
• Compatible Series: Classic AF, NF

Standard Information

• Brand: BELIMO
• Manufacturer Part Number: K4-1 US