Recommendations How To Use Band Saw Blades

Dimensions:
Dimensions of band saw blade depend on the machine type and material type.
Width of the band saw blade type 22 5340 – C75 or 22 5340 – UDD is determined by the smallest radius that is cut in the material. Otherwise the width may be by max.10 mm wider than width of common discs of the particular machine.

Minimum radius [mm]	25	52	100	150	200	300	400	500	600	700
Width of blade [mm]	6	10	15	20	25	30	35	40	45	50

Band saw blades type 22 5340 – WM1, 22 5340 – WM2 or 22 5340 – WM3 the width of blade is determined by machine builder and it is calculated from common coils.
Thickness of band saw blade must not exceed value S1 because material of band saw blade would be too strained while bending and mechanical damage could happen.

When choosing the right tooth pitch, the height of cutting material must be considered. We recommend 3 – 5 teeth to be in cut.

Working conditions:
Maximum cutting speed of band saw blade is recommended by the machine builder. Usually the speed is between 20 – 35 m/sec. General rule is that the harder cutting material, the lower cutting speed we use.

General rules for usage:

1. Before you start cutting check if the band saw blade is properly sharpened, set and whether it is not damaged or heated up. Band saw heating can be recognized if blade is purple color even after cooling.
2. Band saw blade must be properly straightened. Please be aware not to straighten the blade too much. This could cause disruption of the blade.
   Maximum recommended values of straightening the band saw blade:
   
   

   Typ: 5340 C75, 5340 UDD

   Dimensions H x S x T [mm]	Tensile stress σ [MPa]	Tensioning strength [N]
   6 x 0,5 x 4	25	105
   8 x 0,5 x 5	25	142,5
   10 x 0,6 x 6	25	211,5
   12 x 0,6 x 7	30	320
   15 x 0,6 x 7	30	428
   16 x 0,6 x 7	30	464
   20 x 0,6 x 8	30	585
   25 x 0,6 x 8	30	893
   25 x 0,7 x 8	30	1006
   30 x 0,7 x 10	30	1245
   35 x 0,8 x 10	40	1702
   40 x 0,7 x 10	45	2190
   40 x 0,8 x 10	45	2550
   45 x 0,9 x 12	50	3564
   50 x 0,9 x 12	50	4014

   
   

   Typ: 5340 WM1, 5340 WM2, 5340 WM3

   Dimensions H x S x T [mm]	Tensile stress σ [MPa]	Tensioning strength [N]
   32 x 0,9 x 22	40	1840
   32 x 1,0 x 22	40	2040
   32 x 1,1 x 22	40	2240
   35 x 0,9 x 22	40	2050
   35 x 1,0 x 22	40	2280
   35 x 1,1 x 22	40	2510
   40 x 0,9 x 22	45	2700
   40 x 1,1 x 22	40	2930
   50 x 1,1 x 22	50	4760

   
   
3. Guidance of blade and guiding wheels must be clean from chips and resin. Allowance between guiding and band saw blade may be maximum 0,2mm. The distance between the top guidance from the cutting material should be as little as possible so that blade rigidity is as big as possible.
4. Hold the cutting material with both hands so that your body is not in the same level as the cutting blade. Do not cut material using extra strength.
5. Start cutting after the proper cutting speed is achieved. Do not shorten or slow down the cutting period by friction of the blade against the side of material or slowing against cutting material.
6. While cutting big dimensions it is important to use fixed guidance. While finish sizing the material it is important to use holding device.
7. It is necessary to replace the band saw blade and set it away (even if not dull). Mechanical attributes of band saw blade will remain the same.
8. Do not let the band saw to heat up by any means. If this happens, set away the blade immediately and after cooling set and sharpen it again. You can also check the straightness. To prevent heating it is better to sharpen the blades in time and follow the right cutting conditions.
9. Replace the band saw blade if any break off occurs.
10. After finishing cutting process do not leave the band saw blade straightened in the machine, always loosen it.

Service:
Tooth setting is done to 1/2 to 2/3 tooth height and is set by 1/2 to 1/3 over the size of band saw thickness. Tooth setting can be even bigger for soft woods but there must never happen that a piece of wood remains in between the teeth. Please keep the same distance while tooth setting the whole band saw blade. Pay special attention to regularity of setting (max. 0,1 mm). If not, run in of blade might occur on the side where the bigger tooth set is.
Tooth sharpening is done ceramic disc with medium grain roughness. Tooth face is sharpened. If the blade is extra dull, it is possible to sharpen the tooth back as well. Prevent the tooth to become black from annealing (unwanted stage). While grinding it is needed to keep the radius on tooth bottom. Sharp edge on tooth bottom could cause blade breakage.