Milwaukee M12 High-Performance Cordless Jigsaw (2445-20)
Sub-compact 12V jigsaw delivering 2,800 SPM and 3/4" stroke length in an innovative hybrid grip body for tight curves.
- Max Wood Cut: 3 in. (75 mm)
- Max Steel Cut: 1/4 in. (6 mm)
- Stroke Speed: 0 – 2,800 SPM
- Bare Tool Weight: 3.8 lbs. (with battery)
Browse compatible T-shank blades for wood, metal and plastics →
View official Milwaukee battery packs and dual-voltage rapid chargers →
Key Performance Highlights
- 3 in. (75 mm)Max Wood Cut
- 0 – 2,800 SPMStroke Speed
- 3/4 in. (19 mm)Stroke Length
- Hybrid Grip / Compact Top HandleGrip Style
Engineering Strengths & Performance Advantages
Advantage 1
Innovative hybrid handle combines top handle and barrel grip
Advantage 2
Low center of gravity for supreme maneuverability
Advantage 3
Tool-free T-shank blade clamp
Advantage 4
LED worklight and fuel gauge
Advantage 5
Variable speed trigger with lock-on
Workshop Checklist & Buying Advice
- Bare Tool designation: On merchant listings like Amazon, "Bare Tool" indicates the package includes only the jigsaw itself. Battery packs and charger are sold separately or bundled in kit versions.
- Universal T-Shank: This tool utilizes standard universal T-shank blades. Older U-shank or universal-hole blades are not recommended.
- Dust collection: For indoor carpentry and cabinetry remodeling, connect an external 1-1/4" vacuum hose adapter to minimize airborne dust.
Workshop Performance Scorecard & Benchmark Ratings
Standardized evaluation measuring blade guide rigidity, vibration dampening, and sustained cutting cadence.
- Cutting Precision & Guide Rigidity9.7 / 10
Square 90° verticality retention and minimal lateral blade deflection in thick timber.
- Vibration Damping & Work Ergonomics9.0 / 10
Dynamic counterbalance control minimizing operator hand fatigue during continuous runs.
- Cutting Cadence & Motor Torque9.3 / 10
Aggressive feed rate through dense hardwoods without speed stalling.
- Cutline Visibility & Dust Clearance8.8 / 10
Integrated blower effectiveness and illumination along marked cut lines.
- Tool-Free Blade Clamp & Bevel Base8.8 / 10
Keyless hot blade ejection mechanism and rigid cast footplate bevel detents.
Orbital Pendulum Dial Guide: Matching Positions 0 to 3 to Your Cut
Orbital pendulum action drives the blade forward on the upstroke and retracts it on the downstroke. Dialing the right setting eliminates tear-out, blade breakage, and overheating.
Position 0: Straight Vertical Reciprocation (No Orbital)
Zero tear-out & dense structural materialsSheet steel, aluminum plate, PVC conduit, acrylic glass, double-sided melamine, and tight radius scrolling.
Position 1: Low Orbital Thrust
Dense hardwoods & 45° bevel cutsWhite oak, maple, butcher block countertops, and 45° miter bevels to prevent lateral blade wander.
Position 2: Medium Orbital Setting
Everyday softwood & plywood standardPine, fir, CDX plywood, OSB subflooring, and general woodworking balancing speed with edge quality.
Position 3: Maximum Orbital Action
High-speed demolition & rough framingStructural 2x4 framing lumber, pressure-treated posts, garden timber, and rough cuts where chip-out does not matter.
Everything You Need to Start Cutting with this Jigsaw
To maximize precision and runtime right out of the box, our woodworking editors recommend pairing this saw with contractor-grade blades and matching power accessories.
Milwaukee M12 High-Performance Cordless Jigsaw (2445-20)
Sub-compact 12V jigsaw delivering 2,800 SPM and 3/4" stroke length in an innovative hybrid grip body for tight curves.
Bosch Robust Line Wood and Metal (10-Piece Set)
Heavy-duty shockproof case containing premium Clean for Wood, Speed for Wood, and Basic for Metal blades.
Milwaukee M18 REDLITHIUM XC5.0 Battery Pack (48-11-1850)
Genuine Milwaukee M18 REDLITHIUM lithium-ion battery pack with 5.0 Ah capacity and cell thermal protection.
Greenworks GD24JSK2
Greenworks
- Power: 24V Lithium-Ion
- Max Wood: 3-1/8 in. (80 mm)
- Speed: Hasta 3.000 SPM
WORX WX542.9
WORX
- Power: 20 V MaxV Lithium-Ion
- Max Wood: 4-3/4 in. (120 mm)
- Speed: 0–3.500 SPM
Bosch EasySaw 18V-70
Bosch
- Power: 18V Lithium-Ion
- Max Wood: 2-3/4 in. (70 mm)
- Speed: 0–2.600 SPM
Milwaukee M12 High-Performance Cordless Jigsaw (2445-20): Workshop Positioning & Cutting Capabilities
Crafted for both detailed contour carving and fast dimensioning, the Milwaukee M12 High-Performance Cordless Jigsaw (2445-20) stands out in Milwaukee’s tool lineup with an adaptable M12 12V Lithium-Ion platform. Users operating the Milwaukee 2445-20 benefit from an optimized Hybrid Grip / Compact Top Handle center of gravity that promotes true vertical cuts through dense hardwoods.
Sub-compact 12V jigsaw delivering 2,800 SPM and 3/4” stroke length in an innovative hybrid grip body for tight curves.
With rated cutting capacities reaching 3 in. (75 mm) in construction timber, 1/4 in. (6 mm) in sheet metal, and 3/4 in. (20 mm) in non-ferrous metals, the Milwaukee 2445-20 easily accommodates everything from hardwood countertop sink cutouts to electrical junction box cutouts and architectural trim coping.
Verified Factory Specifications & Physical Dimensions
Below are the verified manufacturer specifications and physical parameters for the Milwaukee M12 High-Performance Cordless Jigsaw (2445-20):
- Power Platform: M12 12V Lithium-Ion
- Grip Configuration: Hybrid Grip / Compact Top Handle
- No-Load Stroke Rate: 0 – 2,800 SPM
- Stroke Length: 3/4 in. (19 mm)
- Cutting Capacity in Wood: 3 in. (75 mm)
- Cutting Capacity in Steel: 1/4 in. (6 mm)
- Cutting Capacity in Aluminum: 3/4 in. (20 mm)
- Bare Tool Weight: 3.8 lbs. (with battery)
- Bevel Range: Positive detents at 0°, 15°, 30°, and 45°
- Blade Shank Standard: Universal keyless T-shank clamp
Motor Architecture & Vibration Damping Dynamics
Powered by Milwaukee’s heavy-duty motor platform, the Milwaukee 2445-20 delivers dependable cutting force across 0 – 2,800 SPM. The gearcase is reinforced with all-metal bevel gears that withstand the tortional stresses of rough dimensional lumber framing and mechanical sheet metal cutting.
The contoured D-handle housing on the Milwaukee 2445-20 gives the operator authoritative two-handed leverage when pushing through heavy structural timber. Micro-textured grip zones reduce hand slip in dusty conditions while dampening reciprocating pulses from the gearcase.
Shoe Base Engineering, Bevel Accuracy & Cut-Line Clarity
The die-cast shoe of the Milwaukee 2445-20 provides an ultra-flat gliding plane that resists warping under lateral guide fence pressure. Positive bevel stops at standard angles make beveling straightforward, while an onboard LED work light casts an unobstructed beam directly onto the cut line.
Keyless Blade Clamp & Orbital Action Settings
The Milwaukee 2445-20 features an intuitive keyless blade clamp engineered for rapid changeovers. Inserting a T-shank blade engages positive mechanical locking with a reassuring tactile click, while the lever-action release ensures safe removal without burning your fingers.
A dedicated 4-position orbital action switch on the Milwaukee 2445-20 adjusts the aggressive forward thrust of the blade:
- Setting 0: Vertical reciprocation without orbital swing. Essential for sheet metals, copper tubing, PVC, and chip-free cuts in double-sided melamine veneers.
- Setting 1: Subtle orbital oscillation. Recommended for dense hardwoods like white oak, hard maple, and birch plywood to balance edge smoothness with cut progress.
- Setting 2: Medium pendulum swing. The workhorse setting for general softwood framing (2x4, 2x6) and construction lumber.
- Setting 3: Maximum aggressive orbital thrust. Delivers blistering feed speed for rough dimensioning, timber framing, and demolition work where speed outweighs edge cosmetics.
Frequently Asked Questions About the Milwaukee 2445-20
Can I use existing Milwaukee batteries with the Milwaukee 2445-20?
Yes. The Milwaukee 2445-20 is fully cross-compatible with any standard pack from the Milwaukee M12 12V Lithium-Ion lineup. Whether using compact 2.0 Ah slim packs or high-demand 5.0 Ah extended-runtime batteries, the tool locks on securely without adapters.
Does the Milwaukee 2445-20 feature low-voltage battery protection?
Yes. Integrated microprocessor monitoring cuts motor power before cells discharge below critical voltage levels, preserving the overall cycle life and health of your M12 12V Lithium-Ion lithium-ion packs.
Does the blade clamp accept U-shank blades?
No. Like modern professional jigsaws, the Milwaukee 2445-20 is engineered specifically for universal T-shank blades. T-shank side tangs provide positive mechanical locking that prevents blade slippage under high orbital loads.