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In our previous study, the wood from the dakekanba tree(Betula ermanii), which is native to Japan, was found to be a material suitable for baseball bats. We hypothesized that the ‘tapping sound’ of a dakekanba bat is related to the grain angle(SoG, slope of grain)of the wood. In this study, we examined the vibration properties of dakekanba bats and investigated the effects of SoG on the vibration properties. Additionally, we measured the ball-bat coefficient of restitution(BBCOR)of the dakekanba bat and other bat types. The primary natural longitudinal vibration frequency was found to be related to the SoG and correlated with the function of grain angles derived based on the orthotropic elastic theory. The tapping sound may be a useful factor for evaluating the performance of a baseball bat. When a ball impacted the bat at 120 km/h, the BBCOR of the dakekanba bats was higher than that of both the maple and ash bats. Moreover, the loss tangent of longitudinal vibration exhibited a negative correlation with the BBCOR of the dakekanba bats in comparison with the other bat types. Loss tangent reflects energy loss in vibration. Thus, it can be concluded that the energy loss that occurs during ball impact may affect the restitution performance.