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Univent Pro Saw Detailed Overview
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Development and Historical Context
The Univent Pro Saw, formerly a well-known product in the fire and rescue chain saw category, traces its engineering roots to Sweden, specifically produced on the Husqvarna factory line with key modifications by Unifire, a company specialized in producing custom tools for emergency services. Its design philosophy focuses on resilience and performance under extreme conditions typical of fire and rescue operations.
Unifire, with over two decades of experience in specialized chainsaw engineering, developed the Univent Pro Saw to meet the highly demanding standards of urban search and rescue teams, fire departments, and disaster response units globally. The saw's legacy stems from continuous innovation aimed at overcoming challenges such as vapor locking in high-heat environments and clogging from debris, common hazards firefighters face during ventilation and breaching tasks.
Core Features and Specifications
The Univent Pro Saw boasts a powerful engine, developing over 6 horsepower, capable of achieving chain speeds up to approximately 121.6 feet per second. This fast chain speed allows the cutting action to be more of a filing process, drastically reducing tearing and increasing efficiency and control compared to slower saws.
Key technical specs include:
  • Engine cylinder volume: approximately 119 cc (7.25 cubic inches)
  • Cylinder bore: about 60 mm (2.3 inches)
  • Stroke length: 42 mm (1.65 inches)
  • Idle speed: around 2,500 rpm
  • High-performance electronic ignition system (Hyper-Volt) which advances voltage under load for consistent power delivery
The saw also features a patented spring-loaded depth gauge, a safety device that fully covers the cutting chain when not in use, minimizing kickback risk and operator injury.
The robust Molytech cylinder head integrates molybdenum-impregnated aluminum-magnesium metal, hardened for increased compression, reduced heat, and enhanced engine lifespan. This advanced metallurgy allows the saw to efficiently run on fuels containing up to 15% alcohol, an adaptation to meet modern environmental emissions standards.
Design and User Comfort
Ergonomics play a central role in the Univent Pro Saw design. It employs a Two Mass System where handles are isolated from the motor vibrations via steel springs, significantly minimizing operator fatigue during prolonged use. The saw is balanced evenly between two handles to optimize control and stability.
The chain used is exclusively manufactured by Carbide Chain of America specifically for fire service applications, featuring carbide tips that offer superior durability and cutting speed against demanding materials encountered in rescue situations.
Further air filtration enhancements include a forced-air injection system utilizing a flywheel that expels about 97% of debris through centrifugal force, increasing engine longevity and maintaining cooler operation during high-stress use.
Applications and Industry Usage
The Univent Pro Saw excels in the hardest environments faced by fire rescue professionals. It is widely used for ventilation cutting, breaching barriers, clearing debris, and rapid access operations in collapsed structures or forest fires.
In a notable incident, a wildfire suppression team leveraged the Univent Pro Saw’s high-speed chain and robust air filtration system to maintain continuous cutting during a multi-day operation with heavy smoke and ash concentration, where traditional saws failed due to air filter clogging.
It also finds frequent use in urban search and rescue scenarios, where its combination of power, precision, and safety features can make the difference between life and death during emergency extrications.
Suggestions and Best Practices
Operators should perform routine maintenance including chain sharpening and cleaning of the foam air filter to preserve peak performance. Due to its sophisticated electronic ignition and air systems, using recommended fuel mixtures and avoiding contaminants prolong engine life and reduce emissions.
For firefighting units investing in rescue saws, the Univent Pro Saw offers a balance of power, durability, and ergonomic safety features, justifying its higher upfront cost by decreasing operational downtime and minimizing operator injury risk.
Terminology Glossary
  • Vapor Locking: A condition where fuel vaporizes in the carburetor, causing engine stall or failure
  • Carbide-Tipped Chain: Chains with carbide material on cutting teeth for enhanced durability and cutting ability
  • Two Mass System: Vibration isolating design that separates handles mechanically from the motor
  • Spring-Loaded Depth Gauge: Safety device that restricts chain depth and exposure during operation
  • Electronic Ignition (Hyper-Volt): System adjusting ignition voltage for consistent performance as load varies
  • Molybdenum Impregnation: Metal treatment process for heat resistance and material hardness
  • Forced-Air Injection: Air filtration system that enhances air flow and cleans intake by centrifugal force
Conclusion
The Univent Pro Saw is a highly specialized chainsaw engineered for unforgiving rescue scenarios. Its combination of advanced metallurgy, ergonomic design, and cutting-edge air and ignition systems make it a preferred tool for fire departments and rescue teams worldwide. Its innovations address real-world challenges faced during emergency operations, improving safety, efficiency, and reliability in critical moments.
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