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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