Abstract: Embodiments include a bar for a chain saw that is equipped with one or more oil channels that run along the length of the bar. Each oil channel receives oil at a first end, which exits the oil channel at an oil exit aperture at a second end of the channel. The oil exit aperture of one of the channels is positioned along the side of a bar groove, through which runs the saw chain, proximate to the cutting area of the bar to lubricate the saw chain just prior to the cutting area. A second channel may have an oil exit aperture proximate to the nose of the bar, to lubricate a sprocket wheel in the nose of the bar.

Abstract: Embodiments include a bar for a chain saw that is equipped with one or more oil channels that run along the length of the bar. Each oil channel receives oil at a first end, which exits the oil channel at an oil exit aperture at a second end of the channel. The oil exit aperture of one of the channels is positioned along the side of a bar groove, through which runs the saw chain, proximate to the cutting area of the bar to lubricate the saw chain just prior to the cutting area. A second channel may have an oil exit aperture proximate to the nose of the bar, to lubricate a sprocket wheel in the nose of the bar.

Abstract: Embodiments provide for a lubricant delivery system that includes a saw chain guide bar, such as a harvester bar, and an integrated lubrication channel insert that is insertable into the saw chain guide bar. Oil, grease, or other lubricant can be passed to the chain to the groove bottom to lubricate the chain during use though the lubrication channel insert, as disclosed herein. The lubricant enters the groove via the lubrication channel insert opening into the guide groove in the region of the groove bottom. The lubrication channel insert is coupled to the guide bar and is fed from a transverse lubrication channel lying below the groove bottom. Also provided is a lubrication channel insert.