Skilsaw Professional Model 77 Type 16 Worm Drive Circular Saw – 7-1/4″, 13 Amp, 4400 RPM

Skilsaw Professional Model 77 Type 16 Worm Drive Circular Saw – 7-1/4″, 13 Amp, 4400 RPM

Condition: Used – Signs of wear consistent with professional use; tested and operational

The Skilsaw Model 77 Type 16 Worm Drive Circular Saw is a proven, jobsite-tested professional framing saw featuring legendary worm drive gearing, offering unmatched torque and power in demanding cutting applications. Operating on 120V AC/DC, this 13-amp saw runs at 4400 RPM, making it ideal for cutting dense lumber, plywood, engineered wood, and other heavy materials. Designed for durability and control, the Model 77 is a trusted tool in framing, roofing, and general construction environments.

Specifications
Brand: Skilsaw
Model: 77 (Type 16)
Blade Diameter: 7-1/4 inch
Motor Type: Worm Drive
Power Supply: 120 Volts AC/DC, 60 Hz
Amperage: 13 Amps
Speed (No Load): 4400 RPM
Bevel Capacity: 0° to 45°
Max Cutting Depth @ 90°: ~2-3/8″
Max Cutting Depth @ 45°: ~1-15/16″
Arbor Size: 5/8″
Corded: Yes – standard 3-prong grounded plug
Construction: Heavy-duty steel footplate, aluminum/magnesium motor housing
Weight: Approx. 14 lbs
Handle Design: Rear-handle for increased control and torque leverage

Features
High-Torque Worm Drive Gear System – More torque and power under load than standard sidewinder saws
Durable Industrial Construction – Built for tough jobsite conditions
Rear Handle Design – Improves cutting control for long rip and cross cuts
AC/DC Operation – Compatible with generator power
Manual Blade Lock & Onboard Wrench Storage – For convenient blade changes
Used by Framing Crews for Decades – Known for reliability and power

Applications
Ideal for a variety of heavy-duty construction and remodeling tasks:
Framing and Carpentry – Cutting studs, joists, rafters, and beams
Deck Building – Cuts through pressure-treated and composite decking
Roofing Projects – Handles plywood sheathing and rafter cuts
Remodeling and Demolition – Durable for rough, aggressive use
Plywood, OSB, and Engineered Wood Cuts – Accurate and powerful

Comparable Models
Skilsaw SPT77WML-01 – Modern lightweight magnesium version
Makita 5477NB – Hypoid gear drive circular saw (alternative to worm drive)
Milwaukee 6477-20 – 7-1/4” worm drive competitor
DeWalt DWS535B – Lightweight rear-handle circular saw

Cross-Referenced Skilsaw Models
Skilsaw Model 77 Type 15 – Earlier generation, similar motor specs
Skilsaw Mag77 / Mag77LT – Upgraded lightweight worm drive models
SPT77 Series – Current production evolution of the classic 77

Part of a Larger System
Works seamlessly with:
All 7-1/4″ Circular Saw Blades – Framing, demolition, fine finish, fiber cement
Framing Squares, Edge Guides – For accurate rip and angle cuts
Aftermarket Dust Collection Kits – Improve jobsite cleanliness
Sawhorses, Cutting Tables – For safe and stable cutting environments

Related
Skil worm drive saw Type 16
13 amp circular saw with worm gear
7-1/4″ framing saw professional use
Rear-handle circular saw
Skilsaw model 77 used condition

Common Requests:
“Is this the original Skilsaw worm drive used by contractors?”
“Can I run this saw from a jobsite generator?” Yes – supports AC or DC
“What’s the difference between Type 16 and newer magnesium models?”
“Can this saw cut 2x lumber cleanly?” Absolutely
“Is the blade included with this used unit?” (Varies per listing – confirm if present)

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

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