A band saw blade specification is usually confirmed as length × width × thickness × TPI, followed by quantity and loop type. Material name alone is not enough, because the same material can need different parameters on different machines and workpiece sizes.
If the full specification is not known, start with the machine brand and model, machine nameplate, old blade photo, or product label, then confirm the rest step by step.
The four core parameters
| Parameter | Meaning | Common range | Selection note |
|---|---|---|---|
| Length | Welded loop circumference | Confirm from the machine and old blade | Use the machine nameplate, old blade label, or measured loop |
| Width | Blade width; affects stability, rigidity, and curve capability | 6–80 mm (common reference range) | Narrow for curves, wider for breakdown work; stay within the machine allowance |
| Thickness | Blade body thickness; affects rigidity and flexibility | 0.5–1.6 mm (common reference range) | Balance stability against flexibility; confirm from the machine and old blade |
| TPI | Teeth per inch; affects chip clearance and cut finish | 2–10 (common reference range) | Higher TPI for harder or thinner work; lower TPI for thick or soft material |
The ranges above are common selection references, not the available range for every machine. Final specifications are confirmed from the machine, material, workpiece size, and old blade.
How to confirm length
Band saw blade length usually means the welded loop circumference. Confirm it in this order:
- Check the old blade label or packaging.
- Check the machine nameplate or manual.
- Measure the old blade loop.
- If none is available, provide the machine model and an old blade photo.
Length affects installation and tension directly. Do not estimate it from the material alone.
How to choose width and thickness
- Curve cutting: turning radius and handling matter most; a narrower blade is common.
- Furniture work: match width and thickness to the wood, machine, and cut finish.
- Sawmill breakdown: stability, width, thickness, pitch, and weld-joint quality matter most.
- Metal cutting: consider the material, solid or tube shape, workpiece size, and machine rigidity.
Width must stay within the machine allowance. Going outside it can affect guides, tension, and wheel fit.
How to choose TPI
TPI means teeth per inch. General direction:
- Harder material, thin workpieces, or thin-wall tube generally point to a higher TPI.
- Thick stock, soft material, or a need for more chip clearance generally points to a lower TPI.
- Tube, profiles, and bundle cutting also depend on wall thickness, section, and how many pieces are cut at once.
Higher TPI is not always better. Too fine a pitch can reduce chip clearance; too coarse a pitch can affect cut finish and tooth loading.
What to send for a quote
Use this order format when possible:
Length × Width × Thickness × TPI × Quantity
If only part of the specification is known, you can still send:
- Material and workpiece size
- Workpiece shape: solid, tube, profile, timber, meat, or other
- Machine brand and model
- Machine nameplate photo
- Old blade photo, label, or measured dimensions
Related pages
- How to read a band saw blade specification
- How to measure band saw blade length
- How to choose band saw blade TPI
- How to choose band saw blade width and thickness
- Band saw blade tooth geometry, pitch, and set
- Selection checklist
- Request a quote
FAQ
Can I inquire without knowing the blade length?
Yes. A machine nameplate, machine model, or old blade photo is enough to start, and DEKOLY can help confirm the length.
Can I change blade width on the same machine?
Choose within the machine allowance. Width affects guides, tension, and cutting capability, so it cannot be decided from the cut alone.
Does higher TPI always give a better cut?
No. TPI must match material hardness, workpiece thickness, and chip clearance. Too high a TPI can reduce chip clearance.
Can I measure width and thickness from the old blade?
Yes. Old blade width, thickness, and TPI are useful references, but also confirm the original specification before wear and the weld-joint condition.
Do the table ranges apply to every machine?
No. The ranges are common selection references. The actual allowance depends on the machine manual, wheels, guides, and factory confirmation.