BT30 taper test rods, BT40 taper test rods, BT50 taper test rods

bt40 test rods JB / T9981-99 standards for manufacturing according to the machine used to test a variety of geometric precision, using high-quality carbon tool steel manufacturing, processing after several heat treatment, precision grinding Face made mainly used for Check the accuracy and taper cone tool to check a variety of CNC machine tools and precision instruments, and the spindle hole. test rods are machine tool manufacturing and repair work of the standing tool used to check the main spindle sleeve type radial runout components, axial movement, concentricity, parallelism and parallel degree of accuracy of the rail project, common with standard taper shank test rods, cylindrical test rods, special test rods of three. test rods with tool steel, heat treated and precision machining, there is sufficient structural rigidity to reduce weight, can be made hollow. For ease of assembly and disassembly custody, may be made in dismantling the threaded rod and hanging with holes .① machine with standard taper shank test rods. material CRWMN or T10A, rod heat treatment as C59, shall qualitative process .② cylinder machine test stick. stick material is a T10A or seamless, heat-treated to C59.