| 摘要 |
<p>Chainsaw guide bar of the type that contains an intermediate plate (9) and two surrounding side plates (9, 11), which form a groove for the cutting chain (12). In the guide bar, a nose pulley (15) with a groove for the cutting chain (12) is mounted and can rotate freely between the side plates (10, 11) at the free end of the guide bar (1). This, among other things, reduces the nose radius and thereby the kickback tendency of the guide bar. The guide bar also has at least one lubricating oil duct (19, 21) in such. This duct discharges at the nose pulley (15) bearing (16). Said lubricating oil duct is preferably formed between the nose pulley (15) periphery and its bearing (16) by a groove (21) in at least one side plate (10; 11). Said groove can be slightly bent in the pulley's (15) direction of rotation.<IMAGE></p> |
