Product
Before you blame the holder, the insert or the operator, measure the machine. Ground test mandrels for alignment and runout checks, and balancing mandrels for wheels and cutters.
Best for
Machine inspection, maintenance checks and wheel balancing
You send
Spindle or tailstock taper, length and accuracy required
You get back
Ground mandrels with runout and taper contact reported
How it starts
Test length matched to the check you need to perform
The situation
A surprising share of tooling complaints resolve into a machine condition problem that nobody has measured.
What you get
Mandrels for spindle alignment, runout and taper checks, and for balancing.
The machine interface, tool interface and working envelope are checked before manufacture, so mandrels arrive ready to run.
Supplied from range where a standard suits the job, made to order where it does not, or reproduced from your sample where the original is unavailable.
Locating and clamping features are ground and the dimensions governing runout and repeatability are inspected before dispatch.
Repeat orders and modifications are handled in Bengaluru rather than through an import cycle.
A test mandrel is a ground bar with a precision taper and a cylindrical test surface, used with a dial indicator to check spindle alignment, taper runout and axis parallelism during machine inspection and after maintenance. Balancing mandrels carry wheels or cutters on balancing stands. Both are part of CMTA's manufactured range.
Morse, BT, ISO and other tapers with test lengths to suit common machine checks; balancing mandrels for standard wheel bores. Verified table to follow.
Match the taper to the spindle or tailstock and the test length to the check being performed.
Hardened and stabilised steel with taper and test diameter ground, and runout and taper contact inspected and reported.
Before you enquire
The inputs that make a useful review, plus the related pages worth reading first.
FAQ
The questions engineers and buyers ask before sending a drawing. If yours is not here, ask it directly — you will get an engineer's answer, not a brochure.
Still have a question?
Talk to Anita M.N, Managing Partner, or send the drawing and let the review answer it.
Spindle or tailstock taper, Mandrel length and diameter, Accuracy required, Application (test or balancing), Quantity. If you are unsure of any of these, send a photograph of the current holder and the machine nameplate — that is usually enough for us to confirm the rest.
Yes. Variations in length, reach, interface, clamping or tool size are manufactured to order. Fully custom variants go through the custom tool holder process, with a drawing approved by you before manufacture.
Against three things: the machine interface, the tool interface and the working envelope. Where an existing item is being replaced, matching it to your sample or original part number is the most reliable route of all.
Yes. A drawing is manufactured to its stated tolerances; a sample is measured and reverse engineered into a drawing for your approval, and then manufactured.
Start a project
Share what you are trying to make or fix. Our engineering team reviews every enquiry and responds with the questions that matter, a feasibility view and next steps.
