What you should know about bandsaw blades and how to choose the correct blade?
A bandsaw blade is a piece of metal with teeth that are stronger than the material that you have to cut.
Bandsawing consists of many elements. Machine and its settings, operator, customer, workpiece, and bandsaw blade. If one element fails, the result is ZERO. Best results are achieved when all elements are optimal.
Often choosing the bandsaw blade is done by unit price and other costs and circumstances are forgotten. In order to achieve the best result, it is necessary to take into account more factors.
Blade decision criteria matrix
Of course, correct machine settings can’t be forgotten. It is crucial to set the machine according to blade and material requirements.
How Toolmarketing team can help you to take your bandsawing to the next level?
We have been authorized representative for professional European bandsaw blades manufacturer Bahco in the Baltics for more than 10 years. Over the years our team has got special trainings and gathered a lot of know-how about bandsaw blades. Putting the knowledge into use, we have helped many customers to reach the next level in band sawing.
Our simple two-step processes
Our first step is to meet the customer, find out the opportunities to improve, and set new goals. Meeting at customers' place gives us info on how it is possible to improve blade lifetime, bandsaw productivity, cut surface quality, and lower the costs. During this meeting, our salesman checks the machine and its settings with special equipment, current blade, and the materials that are being cut. The condition of the used blade can give a good feedback about the machine condition and settings.
It is very important to identify the materials that are being cut, this will give accurate input for blade selection and machine settings. Sometimes different materials are cut with the same blade and different machine settings. We can offer solutions in all situations.
After the first meeting and setting of new goals, we will choose the best option according to your needs and order Bahco bandsaw blades for testing. All the loops are welded in Bahco factory and therefore more durable.
When the new blades arrive (approx. order time 7-14 days) our salesmen will visit you again and help to set the right setting for the machine. Most of the time we are able to reach the goal with the first trial, if not, then the process will be repeated.
If you will be satisfied with the outcome and would like to keep using Bahco bandsaw blades we are able to keep a stock of blades for you. This means that you are able to receive your new blades in 24H.
Why Bahco bandsaw blades?
Bahco bandsaw blades are precision tools you can rely on. Bahco`s dedication to research and development has resulted in a wide range of cutting solutions. Rapid Continuous Improvement (RCI) approach to their production processes reflects in the quality and performance of the products. There is a Bahco bandsaw blade designed to reduce your cost per cut.
Bahco bi-metal bandsaw blade production
In 1969 Bahco was the first to introduce bi-metal technology and heralded a new era in metal-cutting blade technology.
Bahco bi-metal bandsaw blades are suitable for most cutting tasks: efficient contour cutting, cutting tubes and profiles, foundry, and production cutting. These long-life blades are the clear choice where cost per cut, safety, productivity, and environmental aspects need to be considered.
Workshop blade - 3857 Easy Cut
Easy cut is the best available blade for the multi-purpose user. It cuts solids and thin profiles better than any other blade on the market.
It’s easy to order and use. Simply requires blade width and length. Patented anti-tooth-stripping design and M-42 tooth tips combine to create a blade that lasts longer and will save time changing saw blades.
Easy-Cut is ideal for small workshops cutting different profiles and sizes in a wide range of materials.
Inventor of the set carbide blade Bahco leads the innovation of carbide bandsaw blades.
Bahco carbide bandsaw blades with high-performance backing steel and carbide grades yield premium band sawing results in a wide variety of applications. Carbide blades are ideal for cutting difficult and abrasive materials, or when working with large, hard-to-cut pieces.
Bahco carbide bandsaw blade production
BandCalc is an interactive software program that allows users quickly and easily to identify the best Bahco bandsaw blade and machine parameters to optimize their bandsaw cutting operation in just 3 steps:
- Select the bandsaw machine
Machine condition, band width, thickness, and length
- Select material to cut
- Select work piece dimensions
Type, dimensions, surface, and type of bundle
The application will give you the recommended Bahco blade and parameters
Bandcalc also allows Bahco bandsaw users to:
- Identify the time per cut
- Calculate the cost of each cut in their machine
- Compare different results between different Bahco blades
Knowledge about bandsaw blade terminology will help you to understand the importance of details.
Bandsaw Blade Terminology
Bandsaw Blade Width (b)
The band width is measured from the tip of the teeth to the back edge of the blade.
Bandsaw Blade Tooth Set (w)
The set is the tilt, or angle, given to the teeth of the saw blade to provide clearance for the blade body and the tooth edges.
Teeth Per Inch (TPI)
The number of teeth per inch (TPI) defines the pitch of the blade and can vary from less than 1 to 24.
Thin-walled workpieces like tubes, pipes, sheets, etc. require fine teeth, otherwise, there is a risk of tooth damage or breakage.
Large cross-sections should be cut with a coarse pitched saw, i.e. fewer teeth per inch. The fewer teeth engaged in the workpiece the higher the cutting capacity. This is because the penetration capacity of each individual tooth is greater if the saw’s feed pressure is distributed over a fewer number of teeth. Therefore, a coarse pitch blade (few TPI) increases productivity and provides the desired large chip space.
Soft materials, such as aluminum and bronze, require a large chip space. A coarse pitch prevents the chips from building up and packing together in the gullets, which can impair sawing and damage the blade. Use the TPI selection guides to find the right pitch for your application.
Different blade types
Powder metallurgic high-speed steel tooth tips, combined with flexible alloy steel backing material results in the most cost-effective bandsaw blades for most metal sawing applications. Bi-metal bandsaw blades cover most market requirements, including multi-purpose blades and contour cutting, cutting tubes and profiles, foundry cutting, and production cutting.
High-performance backing steel and optimized carbide grades give premium band sawing performance. These blades will cut faster and last longer than any other bandsaw blade in a wide variety of sawing applications. The blades are designed and produced for high-efficiency cutting of difficult and abrasive materials as well as high-performance cutting of large and difficult to cut workpieces.
Bahco strives to maintain the quality of its products and deliver a cost per cut savings consistently.
To obtain the maximum blade life always use the recommended band speed. Low band speed causes crooked sawing and rough-cut surface. Slightly high or low speed might cause vibrations.
The correct band tension is needed to get a straight cut. Too low band tension might cause band breakage, crooked sawing, vibration, and slips on the wheel. With too high tension the blade can break or damage the machine.
Too little coolant or incorrect concentration causes rapid tooth wear.
If the chip brush is not working correctly there is a high risk of tooth breakage and it causes rapid tooth wear.
Feed is measured in mm/min. Increased feed increases the depth of the cut. Decreased feed decreases the depth of the cut.
Tips and recommendations
1. Band speed is usually measured with the tachometer. The tachometer is the most precise tool to measure the blade speed. The tachometer instantly presents the actual band speed in m/min on a LED display. But it is also possible to find out the blade speed without a tachometer.
Simply time one revolution by checking the weld or a handmade mark on the loop.
Blade length 7.600 mm
Time of revolution 10 seconds
Formula: 60:10 x 7.6 = 45.6 m/min
2. Coolant concentration is checked with the refractometer. The normal concentration usually being 7% for Bi-metal and 10% for Carbide.
3. Chips at the side of the entrance of the band indicate that the chip-brush is not working properly. Also checking the chips is a good tool to judge how the blade is cutting. It is important that each tooth of the bandsaw blade cuts a chip with the right thickness and color.
Thin or pulverized chips - increase feed rate or lower band speed
Loosely rolled chips - correct cutting data
Thick, heavy or blue chips – lower feed rate or increase band speed