Interchangeable drilling units, addition drill sleeve, drill sleeve expert

Drill Bushings: 1, drill sleeve material, GCr15, 2, hardness: HRC60-65 3, the hole tolerance +0.02 to +0.04 4, cylindrical tolerance +0.03 to +0.05 5, drill sleeve height of 15 plus or minus 0.03, 6 less than 7mm part countersunk drill sleeve 7, the bottom and the hole verticality 0.01 8 finish: 0.08, outer end 1.6 9, chamfering, the R1, under R0.2 10, anti-rotation slot, parallel 2.5 11, spot drill sleeve can be shipped the same day, 12, the jig principles 7 days delivery 13 in detail please visit the addition electromechanical