The laminated bar
that reduces the weight of a chainsaw by up to 15%. It also increases stability and helps reduce kickback.
Laminated bars are easier to straighten than solid bars. However, solid bars are a better choice for heavy cutting projects. They are made from excellent material and can withstand shocks.
A good guide bar is light enough to work with for an extended period of time, reducing user fatigue. It is also durable and designed for maximum performance.
Solid guide bars are tougher and harder-wearing than laminated ones, but they are more difficult to repair. You can identify a solid bar by the absence of spot weld marks on its sides when viewed in grazing light.
Easy to make
Unlike solid bars, which must be machined to create the bar rails and deep groove, laminated bars are simply cut from sheet and spot-welded together. This makes them much cheaper to make.
To achieve this, the bar frame has a central section with a reduced thickness and fit with an aluminum plate. The aluminum plate includes a flange to which the bar rails are adhered and a spacer lip to which the insert plates are abutted. The flange is raised from the insert plate periphery by a desired thickness of adhesive to define a spacing between the facing sides and the core.
It is important to regularly check the guide bar for uneven wear. This will help prevent premature wear of the chain and the bar rails. A guide bar should also be flipped over periodically to ensure that it wears evenly on both sides. The guide bar should be replaced if either side shows excessive wear or damage.
The steel chain bar is a large and heavy component that contributes to the overall weight of the chain saw. Its main purpose is to guide the saw chain during cutting, but it also helps prevent kickback and provides stability. The bar is made from a combination of three electrically welded metal plates. These allow the bar to be much lighter than a solid one, while still providing great stability.
Prior proposals for replacement materials to reduce the weight and cost of the bar have generally resulted in a higher total production cost. For example, fastening the outer laminates in their appropriate relative spacing requires expensive CNC machine time. Additionally, forming the grooves for the bar rails and center link tang is expensive.
Most guide bar faults are caused by improper chain tension, lack of lubrication, or accidents/irregular working habits. These issues may damage the guide bar or even cause it to break. However, with the proper knowledge and care, you can avoid these problems and prolong the life of your bar.