High-Precision Ballbar – High Precision CNC Machine Tool Geometric Accuracy
High-precision ballbar is a high‑precision diagnostic tool designed for CNC machine tool geometric accuracy verification and circular testing. It offers a fast, cost‑effective solution for machining centers, VMCs (Vertical Machining Centers), and 5‑axis machine tools – helping manufacturers reduce scrap rate, prevent unexpected crashes, and extend equipment life.
How It Works
The MT21 features a high‑accuracy telescopic linear displacement sensor with precision balls at both ends. One magnetic socket mounts to the machine spindle, the other to the worktable. As the machine follows a programmed circular path, the ballbar measures the actual radius in real time and compares it with the ideal radius. Any deviation reveals geometric errors, servo mismatches, backlash, or control system inaccuracies.
Applications
- CNC machining centers (3‑axis to 5‑axis)
- Vertical & horizontal machining centers (VMC / HMC)
- Lathes and milling machines
- Periodic preventive maintenance & machine acceptance testing
- Troubleshooting servo and control system issues
Why Choose the MT21 Wireless Ballbar Tester?
- Fast & easy – no special training required
- Comprehensive diagnostics – identifies root causes of poor surface finish and out‑of‑tolerance parts
- Cost‑effective alternative to legacy brands
- Actionable reports – reduce downtime and improve first‑pass yield
Ideal for machine tool builders, calibration service providers, and precision manufacturing workshops that demand reliable, repeatable machine geometric accuracy.
Product Overview
I. MT21 Wireless Ball Bar
The MT21 Wireless Ball Bar features a high-precision telescoping design and linear displacement sensors, with a precision ball at each end. During operation, the precision balls are mechanically positioned and held in place by two precision magnetic cups made of soft metal; one magnetic cup is attached to the machine tool table, while the other is attached to the machine tool spindle or spindle housing. When the machine tool moves along a preset circular path, the device accurately measures the actual circular path and displays the radius in real time. By comparing the measured values with the set path, the machine tool’s performance can be evaluated. The device also features a multi-dimensional centering mechanism to ensure precise alignment during operation. Theoretically, a machine tool with excellent positional accuracy should follow the set circular path closely.
The MT21 measurement software provides a wizard-based workflow that allows for quick and easy testing of the circular paths described above. The collected data can be used to automatically generate graphical analysis reports in accordance with GB 17421-4, ISO 230-4, ASME B5.54, and JIS B standards. The software supports multiple languages, including Chinese, English, and Japanese. It features five-axis simultaneous motion accuracy testing for five-axis machine tools in accordance with ISO 10791-6, as well as prompts and an online help manual. Additionally, it offers motion trajectory simulation and real-time display of test trajectories. It can also calculate overall positional accuracy metrics (roundness and roundness deviation), enabling true spatial analysis of the machine tool. The equipment software includes automatic generation functions for mainstream system programs such as FANUC, SIEMENS, MAZAK, and OKUMA, and features a perpendicularity measurement function.
Therefore, the profilometer is suitable for measuring geometric errors in CNC machine tools and inaccuracies caused by their control and servo systems.
II. Features
1. Simple and Fast
The measurement software features a streamlined workflow and can automatically generate machine tool operation programs. A single simple setup allows for circular trajectory testing on three orthogonal planes, with a single performance test taking only 10 to 15 minutes.
2. Powerful Diagnostic Capabilities
Comprehensive diagnostic reports provide powerful diagnostic capabilities, offering a thorough and professional assessment of machine performance. Taking 360-degree measurement in the XY plane as an example, the following parameters can be evaluated: Backlash X, Backlash Y, Backlash Jump X, Backlash Jump Y, Lateral Play X, Lateral Play Y, Periodic Error X, Periodic Error Y, Servo Mismatch, Perpendicularity, Straightness X, Straightness Y, Proportional Mismatch, Scale Error X, Scale Error Y, pitch X, pitch Y, feed rate, center offset X, center offset Y, position tolerance, best-fit radius, and roundness.
3. Wireless Operation
Data is transmitted wirelessly via Bluetooth to a laptop, eliminating the need for cables and making operation more convenient.
About Us
Factory Profile
Why Choose Us
FAQ
Q1: Who are we?
A1: Founded in 2015, MSK (Tianjin) Cutting Technology CO.Ltd has grown continuously and passed Rheinland ISO 9001
authentication.With German SACCKE high-end five-axis grinding centers, German ZOLLER six-axis tool inspection center, Taiwan PALMARY machine and other international advanced manufacturing equipment, we are committed to producing high-end,professional and efficient CNC tool.
Q2: Are you trading company or manufacturer？
A2: We are the factory of carbide tools.
Q3: Can you send products to our Forwarder in China?
A3: Yes,if you have Forwarder in China,we will glad to send products to him/her.
Q4: What terms of payment are acceptable?
A4: Normally we accept T/T.
Q5: Do you accept OEM orders?
A5: Yes, OEM and customization are available, and we also provide label printing service.
Q6: Why should you choose us?
A6:1) Cost control - purchasing high-quality products at an appropriate price.
2) Quick response - within 48 hours, professional personnel will provide you with a quote and address your concerns.
3) High quality - The company always proves with sincere intention that the products it provides are 100% high-quality.
4) After sales service and technical guidance - The company provides after-sales service and technical guidance according to customer requirements and needs.
