The grinder is designed for grinding the external diameter, external conical face internal bores, internal conical face and shoulder of medium-small sized shaft, sleeve, flange and etc. The worktable, workhead and wheelhead are able to be swiveled for adequate angle, worktable and wheelhead can be operated hydraulically or manually, in order to meet the needs of manufacture workshop, maintenance workshop or tool workshop. The grinder can use center, chuck or sping collet to fix workpiece.ModelM1412Height of center100mmDistance between centers370/520mmMax.diameter to be ground( External/ Internal)125mm /40mmMax.length to be ground( External/ Internal)350mm/500mm,50mmRecommend diameter to be grounddia 4-50mmDimension of grinding wheel300x127x20~40mmLinear speed of grinding wheel35m /sMin.feed of grinding wheel frame0.0025mmTravel speed of worktable(stepless)0.05-4.5m/minRange of the bore to be ground/Max.depth of the bore to be ground/Total power of the motors/Max.weight of workpiece admitted/External grinding with centerCircularity0.0015mmCylindricity0.003/0.005mmSurface roughness≤0.32µmExternal grinding on chuckCircularity/Surface roughness/Internal grinding on chuckCircularity/Surface roughness/Overall dimension of the machine1770,2240x1160x1300mmWeight of the grinder1500kg ,