CAT / BT / DIN Spindle Test Bar Runout Arbor Steep Taper
The largest causes of excessive tool wear and tool breakage are machine tool spindle runout and excessive slop or axial play. The spindle runout test bar can be used to test your CNC machine tools for precise accuracy and proper alignments. Test bars ensure a stable production environment and consistency when moving jobs from one machine to another.
Spindle Runout Testbars are easy to use and they fast way to verify your machine spindle is running properly. Check them after a machine has been crashed and take the proper steps to prevent unintentionally making scrap parts.
CAT / BT / DIN Testbar Tolerance and Accuracy
- CAT or ANSI are 10 micron or better
- BT are 0.003mm (3 micron) or 0.0001in. or better.
- Steel taper testbar arbors include certificates.
Retention knobs are not included. (use one from your machine, as they differ from one machine to the other.)
Spindle Runout Gauge Size |
Dia. |
Gauge Length |
Price |
Part Number |
CAT40 / ANSI 40 Test bar |
40 |
300 |
$998.00 |
K7500-3 |
CAT50 / ANSI 50 Test bar |
50 |
300 |
$1126.00 |
K7500-4 |
BT30 Test bar |
32 |
300 |
$1126.00 |
K7500-0 |
BT40 Test bar |
40 |
300 |
$1392.00 |
K7500-1 |
BT50 Test bar |
50 |
300 |
$1199.00 |
K7500-2 |
DIN30 Test bar |
32 |
300 |
$1126.00 |
K7500-5 |
DIN40 Test bar |
40 |
300 |
$1126.00 |
K7500-6 |
DIN45 Test bar |
50 |
300 |
Call us |
K7500-7 |
DIN50 Test bar |
50 |
320 |
Call us |
K7500-8 |
DIN60 Test bar |
50 |
400 |
$1992.00 |
K7500-9 |
Optional Test Bar Wood Storage Case
(fit to size) available. $125.00
(Part Number: K7500-S1)
Pull Stud Thread size |
CAT40 |
5/8 inch - 11 inches |
CAT50 |
1 inch - 8 inches |
BT30 |
M12 x 1.75 |
BT40 |
M16 X 2.0 |
BT50 |
M24 X 3.0 |
Need a different machine taper test bar? Call us at 414-881-4493
Click below to see all available tapers.
Can't find the right size spindle taper test bar? Contact us.
Runout Test Bars are available for all major machine tapers