中文（繁體字）
English (international)
Definition of Raker Tooth Set
A raker tooth set on a band saw blade is a tooth arrangement where groups of teeth are alternately set left and right, followed by one tooth left unset (the raker). The sequence typically follows a Left-Right-Straight pattern, repeating along the blade length. This configuration provides efficient chip clearance, reduced binding, and improved cutting stability, especially in coarse-tooth blades designed for wood, soft metals, and non-ferrous materials. The raker tooth acts to clear chips from the kerf, maintaining smooth cutting action and minimizing heat buildup. Proper raker tooth set selection ensures optimal performance in both production and maintenance cutting operations.
Why It Matters for Band Saw and Mill Drill Machines
The raker tooth set pattern is critical for controlling chip load and maintaining kerf width. The alternating set teeth produce the necessary clearance to prevent blade binding, while the raker tooth efficiently evacuates chips. This results in smoother cutting, reduced vibration, and extended blade life.
In metal cutting applications, raker tooth sets help maintain consistent feed rates and reduce the risk of tooth stripping when cutting softer alloys. In woodworking, they offer an effective balance between aggressive cutting and surface quality. Incorrect tooth set selection can lead to poor surface finish, excessive heat, and accelerated blade wear.
Related Terms
Band Saw Tooth Pitch
Band Saw Tooth Set
Band Saw Skip Tooth
Band Saw Hook Tooth
Band Saw Kerf
Band Saw Cutting Speed
FAQ
When should operators choose a Band Saw Raker Tooth Set over other tooth patterns?
A Band Saw Raker Tooth Set is best suited for cutting softer metals, plastics, and wood, where chip evacuation and reduced binding are priorities. It is also effective in resawing applications due to its balance between aggressiveness and finish quality. Operators often choose it for general-purpose cutting of mixed materials in maintenance shops.
How does a Band Saw Raker Tooth Set improve chip clearance?
In a Band Saw Raker Tooth Set, the unset raker tooth follows two alternately set teeth, acting like a scraper to remove chips from the kerf. This keeps the cut clear, reduces friction, and minimizes heat buildup, allowing the blade to maintain its sharpness longer.
Can a Band Saw Raker Tooth Set be used on hard alloy steels?
While a Band Saw Raker Tooth Set can cut hard alloy steels, it is generally less efficient than other tooth patterns, such as a variable pitch or modified hook tooth, for those materials. In hard steels, chip evacuation is less of an issue than maintaining tooth integrity under high loads.
