POWERTEC USA
4" to 2-1/4" Clog-Resistant Eccentric Reducer (70146-P2)
Keep Your Dust System Flowing Smoothly
The POWERTEC 70146-P2 is a professional 2-pack of 4-inch to 2-1/4-inch eccentric reducers, specifically designed to eliminate "dead zones" in your horizontal dust collection runs. Traditional concentric reducers create a central bottleneck that forces wood chips to settle at the bottom of the fitting, eventually leading to clogs and reduced suction. Our Eccentric (Off-Center) design aligns the bottom surface of both ports, creating a flat, unobstructed floor that allows gravity-fed debris to slide seamlessly from your machine to the main collector.
Constructed from high-impact, industrial-grade ABS plastic, these reducers are built to withstand the constant abrasion of sawdust and high-velocity chips. They are the ideal solution for stepping down 4" mainlines to fit 2-1/4" machine ports, router fences, or shop vacuum hoses without compromising the static pressure of your system. With this 2-pack, you can optimize two machine stations simultaneously for a cleaner, safer workshop.
- Smart Eccentric Geometry: Off-center alignment prevents dust and chip accumulation at the reduction joint.
- Enhanced Velocity: Effectively steps down airflow to increase suction power at the machine port.
- Industrial Build: ABS material is naturally resistant to rust, corrosion, and the stresses of high-suction environments.
- Airtight Friction Fit: Precision-molded taper ensures a snug connection to standard 4" ID hoses and 2-1/4" OD fittings.
- Dual Application Value: 2-pack set provides essential hardware for multiple tool stations or branch lines.
- Important Compatibility Note: This reducer is specifically designed to work with a 4" ID dust collection hose and 2-1/4" ID ports. It is NOT intended to fit a 4" OD machine port directly. For 4" OD connections, use POWERTEC 70149 or 70369 flex cuffs.
Technical Specifications
- Large Port Size: 4" Nominal (3-61/64" OD | 3-45/64" ID)
- Small Port Size: 2-1/4" Nominal (2-1/4" OD | 2" ID)
- Material Type: Heavy-Duty Black ABS Plastic
- Design Style: Eccentric (Flat-Bottom Transition)
- Pack Quantity: 2 Individual Reducers
Verified Tool Compatibility
- Router Table Fences
- Handheld Power Tools
- Benchtop Sanders
- Jointers & Shapers
- CNC Spoilboards
- Small Table Saws
- Shop Vac Transitions
- Custom Extraction Jigs
POWERTEC is a leading manufacturer of high-quality woodworking tools, machinery accessories, and dust collection components. We are committed to providing the durable, intuitively designed solutions that help craftsmen keep their shops running at peak performance.