GP326H Roundness Measuring Instrument (Roundness Tester)
Universal roundness tester with a precision air-floating spindle as the reference. Spindle accuracy: ±0.035 μm; system accuracy: ≤0.05 μm; measurement resolution: 0.01 μm; maximum sampling rate: 8192 points/revolution. Designed for measuring roundness, waviness, and coaxiality of rotating components such as rings and cylinders.
11 Components of the Complete Unit
- High-precision air floating spindle
- Precision Leveling and Centering Worktable
- Granite Countertop
- Electric Granite Pillar
- High-precision inductive probe
- Precision Rotary Encoder
- Drive Control Box
- High-Precision Electrical Box
- Air Filtration and Drying System
- Dedicated Measurement & Analysis Software
- Steering Column Control Unit
Structure, Gas Supply, and Measurement System
Air-bearing spindle
Ultra-high-precision air-floating shafts deliver exceptional rotational accuracy, stability, and load capacity. With non-contact operation, zero wear, and extended lifespan, they meet National Grade 1 precision standards.
Granite structure
The worktable and column are made of natural granite, ensuring stable mechanical performance with no deformation or drift.
Air source treatment
Two-stage built-in air filters, a protective pressure switch, and an oil-water separator ensure stable, clean, and dry compressed air.
Spindle Drive
High-precision inverter motor with stable and reliable speed.
Sensor moved
Vertical and horizontal motion is driven by linear motors for easy operation and precise adjustment.
Rotary Encoder
2048 lines/week ensures data sampling resolution.
Measurement Circuit
Self-developed high-precision LVDT circuitry with measurement accuracy and stability leading the domestic market.
Measurement Software
Automatic data acquisition, eccentricity correction, instrument calibration, digital filtering, ISO-compliant parameter evaluation, and database archiving with print output.
Model 3 Technical Specifications
| Projects | GP326H | GP316H | GP306H |
|---|---|---|---|
| Measurement Items | Roundness, waviness, concentricity, coaxiality, parallelism, flatness, perpendicularity, eccentricity, runout(Three models are consistent) | ||
| Spindle Accuracy | ±0.035 μm(Three models are consistent) | ||
| System Precision | ≤0.05μm(Three models are consistent) | ||
| Spindle Speed | 5r/min(Three models are consistent) | ||
| Turntable maximum load | 40 kg | 60 kg | 60 kg |
| Effective turntable diameter | 200mm | 256mm | 300mm |
| Minimum Inner Diameter of Workpiece | 3mm(Three models are consistent) | ||
| Measure Height | 450mm(Three models are consistent) | ||
| Rotating Worktable | Precision leveling and alignment(Three models are consistent) | ||
| Sensor moved | Joystick electric control(Three models are consistent) | ||
| Measurement Range | ±50 μm, ±100 μm, ±400 μm(Three models are consistent) | ||
| Measurement Resolution | 0.01μm(Three models are consistent) | ||
| Maximum Sampling Resolution | 8192 per week(Three models are consistent) | ||
| Digital Filter Mode | 2-15、2-50、2-150、2-500、15-150、15-250(Three models are consistent) | ||
| Zoom Level | 400、1000、2000、4000、10000、20000、40000、80000、100000(Three models are consistent) | ||
| Roundness Evaluation Methods | Least Squares Circle (LSC), Minimum Zone Circle (MZC), Maximum Inscribed Circle (MIC), and Minimum Enclosing Circle (MEC).(Three models are consistent) | ||
| Other Features | Harmonic Analysis, Slope Analysis, Database Archiving(Three models are consistent) | ||
| Extended Features | Partial circularity evaluation, commutator roundness, and inter-segment difference measurement(Three models are consistent) | ||
| Accessories | Precision 3-Jaw Chuck, Partial Arc Evaluation Software, Motor Commutator Measurement Software(Three models are consistent) | ||
| Operating Pressure | 0.40～0.43MPa(Three models are consistent) | ||
| Pneumatic Supply Pressure | 0.45～0.80MPa(Three models are consistent) | ||
| Host Dimensions | 800mm × 500mm × 1450mm(Three models are consistent) | ||
| Host Weight | Approximately 220kg(Three models are consistent) | ||
Applicable Units and Scenarios
Precision machinery manufacturers in automotive parts, bearings, textile machinery, fuel pumps and injectors, aerospace, etc., as well as universities, research institutes, and metrology organizations.
Same Series Step Measuring Instrument
The step height instrument in this series measures surface roughness (Ra/Rz), micro-profiles, and step heights to verify whether workpieces meet optical or mirror-grade specifications. Specific models, measurement ranges, and configurations are determined based on workpiece dimensions and technical agreements. Sample testing is available upon request.
Roundness Meter Selection
- Ask:How do I choose between the GP326H, GP316H, and GP306H models?
- Answer:All three have the same accuracy (spindle ±0.035μm, system ≤0.05μm); differences lie in the rotary table: effective diameters 200mm / 256mm / 300mm, maximum loads 40kg / 60kg / 60kg. Select based on workpiece outer diameter and weight.
- Ask:Which parameters can be tested?
- Answer:Roundness, waviness, concentricity, coaxiality, parallelism, flatness, perpendicularity, eccentricity, runout.
- Ask:What level of precision?
- Answer:Spindle accuracy ±0.035μm, system accuracy ≤0.05μm, measurement resolution 0.01μm, max sampling 8192 points/rev.
- Ask:What is the maximum workpiece size?
- Answer:GP326H Turntable: Effective diameter 200 mm, measurement height 450 mm, max load 40 kg; minimum inner diameter of workpiece 3 mm.
- Ask:How are measurement results evaluated?
- Answer:Supports four roundness evaluation methods: LSC, MZC, MIC, and MCC. Features six digital filter levels, nine magnification factors, harmonic analysis, and slope analysis. Results can be saved to the database and printed.
- Ask:What are the requirements for the air supply?
- Answer:Operating pressure: 0.40～0.43MPa, air source pressure: 0.45～0.80MPa.
Need to measure roundness or surface profile of a workpiece?
Provide the workpiece's outer diameter, weight, material, and parameters to be tested. The Technical Department will then recommend a model and schedule the trial test accordingly.
Submit part parameters to retrieve measurement planBrand Description
Shenzhen Guangbo Luwei Innovation Technology Co., Ltd. (brand name: Guangbo Tech) derives its core technology from the national 863 program results of its parent company, Shenzhen Zhuguangbo Mechanical Technology Co., Ltd.