Replacing Milwaukee Band Saw 6232 20 Blades: How to Match the Correct Size and Material
You own a Milwaukee 6232-20 corded deep cut band saw and you need to replace the blade. The 6232-20 uses a 44-7/8 inch blade, but you see multiple TPI and material options. You want to know which blade to buy and how to install it. You need a guide that covers blade replacement for this specific saw.
The Milwaukee 6232-20 is a corded deep cut portable band saw designed for metal cutting. It uses a 44-7/8 inch blade in 1/2 inch width. This is the same blade used by the Milwaukee 2729-20 and 2929-20 cordless deep cut saws and the DEWALT DCS374B and DWM120.
Milwaukee 6232-20 Specifications
| Specification | Value |
|---|---|
| Model | 6232-20 |
| Type | Corded deep cut portable band saw |
| Cut capacity | 4-3/4 to 5 inches |
| Blade length | 44-7/8 inches |
| Blade width | 1/2 inch |
| Blade thickness | 0.020 inches |
| Motor | 6 amp, 120V |
| Speed | Single speed, 350 SFPM |
| Weight | 14.5 pounds |
| Switch | Trigger with lock-on |
Blade Specifications
Blade Length
The 6232-20 uses a 44-7/8 inch blade. This is the standard length for deep cut portable band saws.
Important: Do not confuse with the 35-3/8 inch blade used by compact saws or the 30-9/16 inch blade used by the M12 saw. The 6232-20 requires the 44-7/8 inch length.
Blade Width
All blades for the 6232-20 are 1/2 inch wide. This is the standard width for portable band saw blades.
Blade Thickness
All blades for the 6232-20 are 0.020 inches thick. This is the standard thickness for portable band saw blades.
TPI Selection
10 TPI
Best for: Thick pipe, solid bar, structural steel. Material thickness: 1/4 to 2 inches. Characteristics: Cuts aggressively in thick material. Coarse teeth handle deep cuts.
When to use 10 TPI:
- Cutting thick wall pipe (2 inches and up)
- Cutting solid bar stock (1 to 2 inches)
- Cutting structural steel (angle, channel, beam)
- Cutting thick plate
14 TPI
Best for: Medium thickness material, smoother cuts. Material thickness: 1/8 to 1 inch. Characteristics: Good balance of cutting speed and surface finish.
When to use 14 TPI:
- Cutting medium wall pipe (1 to 2 inches)
- Cutting thin solid bar (1/4 to 1 inch)
- Cutting aluminum and soft metals
- When you need a smoother cut than 10 TPI
18 TPI
Best for: General-purpose cutting. Conduit, thin-wall tubing, unistrut. Material thickness: Under 1/4 inch. Characteristics: Fine teeth prevent grabbing and tearing in thin material.
When to use 18 TPI:
- Cutting conduit (1/2 to 1-1/2 inch EMT)
- Cutting thin-wall tubing
- Cutting unistrut (1-5/8 inch)
- Cutting sheet metal (16 gauge and thinner)
10/14 Variable Pitch
Best for: Mixed material thicknesses and production cutting. Characteristics: Alternating coarse and fine teeth. Handles a range of thicknesses without changing blades. Reduces vibration.
Blade Material
Bi-Metal M42
The standard for the 6232-20. M42 high-speed steel edge hardened to 67 to 69 HRC. Can cut: Mild steel, stainless steel, aluminum, brass, copper, cast iron. Blade life: 50 to 200 cuts depending on material and thickness. Cost: 15 to 30 dollars.
Bi-Metal M51
Harder edge than M42 (69 to 70 HRC). Better for tough materials. Blade life: 20 to 30 percent longer than M42 in tough materials. Cost: 20 to 40 dollars.
Carbide-Tipped
The longest lasting option. Carbide teeth cut faster and last longer than bi-metal. Blade life: 5 to 10 times longer than M42. Cost: 50 to 100 dollars. Best for: Production cutting where the higher cost is justified by longer life.
Recommended Blades by Task
General-purpose cutting: 10/14 variable pitch, bi-metal M42. Handles a range of material thicknesses. Cost: about 20 dollars.
Thick material: 10 TPI, bi-metal M42. Coarse teeth for thick stock. Cost: about 18 dollars.
Thin material: 18 TPI, bi-metal M42. Fine teeth for thin stock. Cost: about 18 dollars.
Stainless steel: 14 TPI, bi-metal M51. Harder edge for tough material. Cost: about 30 dollars.
Production cutting: Carbide-tipped. Longest life for production use. Cost: about 50 to 100 dollars.
A quality blade for the 6232-20 is the Milwaukee 48-39-0502 44-7/8 inch 10 TPI bi-metal blade, which handles a wide range of metal cutting tasks.
Cross-Brand Compatibility
The 44-7/8 inch blade is shared with:
- Milwaukee 2729-20 (M18 FUEL cordless deep cut)
- Milwaukee 2929-20 (M18 FUEL cordless deep cut, newer)
- DEWALT DCS374B (20V MAX cordless deep cut)
- DEWALT DWM120 (corded deep cut)
- Makita XBP02TX (18V LXT cordless)
- BLACK+DECKER 9411 (corded)
Blades from any of these brands will fit the 6232-20. The blade length, width, and thickness are the same.
Blade Installation
Step 1: Remove the Old Blade
- Unplug the saw.
- Open the blade guard.
- Release the blade tension using the tension lever.
- Remove the old blade from the wheels.
Step 2: Install the New Blade
- Place the new blade on the wheels with the teeth pointing toward the shoe (downward).
- The blade should sit in the center of both tires.
- Apply tension using the tension lever.
- Check that the blade is properly seated on both tires.
- Close the blade guard.
Step 3: Check Tracking
- Plug in the saw.
- Run the saw briefly (1 to 2 seconds).
- Check that the blade tracks straight on the tires.
- If the blade wanders, adjust the tracking and recheck.
Step 4: Adjust Blade Guides
- The side guides should be about 1/32 inch from the blade sides.
- The thrust bearing should be about 1/64 inch behind the blade.
- Adjust if necessary.
Blade Break-In
New bi-metal blades need a break-in period. Run the first 10 to 20 cuts at half feed pressure. This lets the tooth tips wear evenly and prevents chipping. Skipping break-in can reduce blade life by 30 to 50 percent.
6232-20 vs 2729-20 vs 2929-20
| Feature | 6232-20 | 2729-20 | 2929-20 |
|---|---|---|---|
| Power | Corded (6 amp) | M18 cordless | M18 cordless |
| Motor | Brushed | Brushless | Brushless |
| Speed | 350 SFPM (single) | 200 SFPM (single) | 200-550 SFPM (variable) |
| Weight | 14.5 pounds | 14.7 pounds | 14.7 pounds |
| Blade | 44-7/8 inch | 44-7/8 inch | 44-7/8 inch |
| Blade change | Tool required | Tool required | Tool-free |
Which to choose: The 6232-20 is the corded version with unlimited runtime. The 2729-20 is the original cordless. The 2929-20 is the newer cordless with variable speed and tool-free blade change.
FAQ
What blade does the Milwaukee 6232-20 use?
A 44-7/8 inch blade in 1/2 inch width and 0.020 inch thickness. Available in 10, 14, and 18 TPI, plus 10/14 variable pitch.
Can I use a blade from the 2729-20 in my 6232-20?
Yes. Both use the same 44-7/8 inch blade. The blades are interchangeable.
What TPI should I use for cutting conduit?
18 TPI is the best choice for conduit. Fine teeth handle EMT and rigid conduit cleanly without grabbing.
How do I change the blade on a Milwaukee 6232-20?
Unplug the saw, open the blade guard, release tension, remove the old blade, install the new blade with teeth pointing toward the shoe, apply tension, close the guard, check tracking, and adjust the blade guides.
How often should I replace the blade on my 6232-20?
When the cut slows down, the blade starts wandering, or the cut surface becomes rough. A sharp blade cuts smoothly with light pressure.
References
- Milwaukee Tool. “6232-20 Corded Deep Cut Band Saw Owner’s Manual.” Milwaukee Tool.
- Milwaukee Tool. “Portable Band Saw Blade Specifications.” Milwaukee Tool Product Catalog.
- LENOX Tools. “Wolf-Band 44-7/8 Inch Blade Guide.” LENOX Industrial Division.
- DEWALT. “Portable Band Saw Blade Reference.” DEWALT Product Catalog.
- Pro Tool Reviews. “Milwaukee 6232-20 Review.” ProToolReviews.com.
