Ericsson Fiber FSU EFC11 ultrasonic fiber cleaver double grip

The Ericsson Fiber FSU EFC11 ultrasonic fiber cleaver with double grip produces precision, low-angle cleaves for fusion splicing in optical networks. Unlike conventional cleavers, this tool uses ultrasonic vibration of a precision diamond blade attached to a resonant acoustic horn, eliminating compressive stresses and blade intrusion. The result is superior end-face quality with minimal hackle and misting.

The dual-grip mechanism maintains consistent fiber tension throughout the cleaving cycle, ensuring repeatable performance across laboratory and field deployments.

Technical Specifications

• Ultrasonic vibration–driven precision diamond blade on resonant acoustic-stepped horn


• Vibrating blade rides on frictionless damped bearings


• Electronic circuit maintains ultrasonic resonance with automatic termination for battery conservation Fiber Compatibility


• Single-mode and multi-mode optical fibers


• Fiber diameter: 80–200 µm


• Maximum fiber buffer diameter: 250 µm (EFC11 model) Cleave Quality & Performance


• Mirror-quality planar fiber ends with no hackle


• End angle consistency: < 1°


• Cleave angle repeatability: 20,000 cleaves Operation & Power


• Power source: 9 V alkaline battery (MN 1604)


• Battery life: Approximately 10,000 cleaves


• Operation: Stripped fiber placed in low-torsion V-groove clamps; axial tension applied via lever; cleaving initiated by releasing secondary lever Physical Dimensions


• Size: 150 × 150 × 68 mm


• Weight: 1.2 kg (2.6 lb)

Key Features

• Ultrasonic vibration eliminates compressive stress during cleaving


• Double-grip mechanism ensures consistent fiber tension and repeatability


• Adjustable diamond blade extends tool life and reduces consumable costs


• Compact form factor suitable for bench and field operations

Typical Applications Fusion splicing preparation in optical network installation, maintenance, and laboratory environments requiring high-quality end-face geometry and minimal splice loss.