Excision Bi-Alfa Profile Band Saw Blade 62527406-2450 2450 x 27 x 0.9mm 4/6 TPI

This page is for the Excision Bi-Alfa Profile blade in the 27 x 0.9mm size with 4/6 TPI (base code 62527406), listed in 48 lengths from 2450mm to 4870mm. Each length has its own part code: the base code, a dash and the length in mm.

The maker describes Bi-Alfa Profile as a blade for vibration-susceptible cuts: vibration when cutting tubes, beams and profiles can damage a conventional blade and reduce blade life and cut area. The reinforced back edge of the tooth adds strength against vibration during interrupted cutting and protects the blade against tooth strippage, and the tooth tip is HSS M42 (manufacturer-stated).

The profile tooth has a reduced cutting angle of 6°, which the maker says adds to its resistance to vibration when cutting beams and tubes (manufacturer-stated). The listing gives the pitch as 4/6 TPI, a combi (variable) pitch: the maker explains that the first figure is the largest distance between tooth tips and the second the smallest distance within one group, and that a combi pitch widens the blade's application area and reduces vibration (manufacturer-stated).

Where this product is used

• Vibration-susceptible cuts (manufacturer-stated)
• Tubes, beams and profiles (manufacturer-stated)
• Round and square tubes as well as beams (manufacturer-stated)

Features

• Reinforced back edge on the tooth for strength during interrupted cutting (manufacturer-stated)
• Protects the blade against tooth strippage (manufacturer-stated)
• Profile tooth with a reduced cutting angle of 6° (manufacturer-stated)
• HSS M42 tooth tip (manufacturer-stated)

Key specifications

Selecting the right option

To order the right length, measure the saw: with the wheels set about the middle of their adjustment range, the maker adds pi times each wheel radius to twice the wheel centre distance to get the blade length in mm (manufacturer-stated). The option selector lists 48 lengths from 2450mm to 4870mm, and the number after the dash in each part code is that length. The maker says the TPI has to suit the thickness of the material being cut or blade life is dramatically shortened, and suggests aiming for 5 to 7 teeth in the cut (manufacturer-stated). For band speed, its chart for bimetal blades (Product Guide p31) runs from 80 to 90 m/min on construction and machining steel down to 15 to 25 m/min on heat resistant steels (manufacturer-stated).

Related products

Neighbouring sizes: Bi-Alfa Profile 27 x 0.9mm, 3/4 TPI (62527304), Bi-Alfa Profile 34 x 1.1mm, 4/6 TPI (62534406) and Bi-Alfa Profile 27 x 0.9mm, 5/7 TPI (62527507).