Machine test bars Is machine manufacturing and the repair work in the of standing tool, main used to check spindle sleeve class parts of radial round beat, axis to channeling moving, with axis degrees, parallel degrees and and guide of parallel degrees, precision project, common with standard cone handle test rod, cylindrical machine test rod, dedicated test rod three species. test rod with tool steel manufacturing, after heat treatment and the precision processing, structure Shang has enough of rigid. for reduce weight, can made hollow of. for easy loaded split custody, Can remove threads and holes for hanging on the rods. ① with taper shank test bars. materials for CRWMN or T10A, C59 rods heat treatment required to carry out qualitative treatment. Second, the cylindrical test rod. Rod material for T10A or seamless steel tubes, heat treatment is C59.

Mo's cone handle test rod used quality carbon pigment tool steel or to sewing pipe manufacturing processing, by times processing, work surface precision should cut and into, hardness high, finish good, precision stable cylindrical degrees errors ≤ 0.002mm, cone degrees for 0.001/100. straight Rod material used quality carbon pigment tool steel or to sewing pipe manufacturing processing, by times processing, work surface precision should cut and into, precision stable cylindrical degrees errors ≤ 0.002mm, cone degrees for 0.001/100.

BT test rod models 30# 40# 50 # 60 # accuracy to level 0

Taper shank test bars:(Unit:) is used to check the accuracy of the taper, taper shank test bars suitable for high precision machine tools and precision spindle hole taper checking. Taper shank test bars made of high quality carbon tool steel or steel manufacturing process.

Taper shank test bars: Used to check the accuracy of the taper, taper shank test bars suitable for high precision machine tools and precision spindle hole taper checking.

Straight cylindrical test Rods made according to JB/T9881-99 standard, used to test a variety of geometric accuracy, using high quality carbon tool steel, processed through a series of heat treatment, precise grinding and face.