JD25-D / JD25-C Digital Universal Length Measurer
Application
Digital universal length measurer is a kind of length measuring instrument which is used in absolute and comparative measurement. It is mainly used in metal-processing industry, especially those measuring rooms or inspection stations of machinery industry and others industrial fields, such as tool-measure and instruments manufacturing.
Features:
1. High quality cast-iron base support, it has a good stability after long-term natural seasoning.
2. Optimization design, make sure the structure with high performance and precision.
3. Various kinds of accessories are provided, so it has good universal performance.
4. It is equipped with optical grating measuring system, the measuring result is displayed in number visually.
5. The illumination system of optical grating adopts infrared illuminator which is low voltage and current, small volume and long life.
6. It uses Abbe's principle and high precision measuring system, so it has a high measuring precision.
SPECIFICATION
Main Measure Work-pieces Include:
1. Smooth columniform worpieces (Axis, hole, plug gauge and ring gauge etc )
2. The MID-diameter of internal thread, external thread, thread plug gauge and thread ring gauge
3. Workpieces with parallel plane (calipers, length bar and low-grade measuring block)
Technical Parameter:
Measuring range (mm):
External size:
Absolute measurement: 1-100
Comparative measurement: 0-670
Internal size:
When using small measuring hook
(maximum insert depth 12, maximum wall thickness 50): 10-400
When using large measuring hook
(maximum insert depth 50, maximum wall thickness 85): 30-370
When using electronic measuring hook: 1-60mm
When using universal measuring hook: 14-112mm
Measurement of internal thread MID-diameter:
When using small measuring hook (thread small diameter 13-30mm)
When using large measuring hook [thread small diameter 31 ~ (70 -wall thickness) X 2 ]
Thread distance: 0.5~6 mm
Measurement of external thread MID-diameter: Maximum 200mm, thread distance 1~6 mm
Measuring force (N): 0, 1.5, 2.5
Digital resolution: 0.1um
Accuracy repeatability of the instrument:
. External-size measurement 0.3μ M
. Internal - size measurement 0.5μ M
Accuracy of instrument:
While direct measurement of external size, accuracy of instrument is superior to
(0.5 + L/200) um for JD25-D and 0.5 um for JD25-C
While measurement of internal size, accuracy of instrument is superior (1 +L/100) um JD25-D and 1 um for JD25-C
Universal worktable:
1. Installment size of worktable: 160X160mm
2. Adjusting range of height: 0 ~ 100
3. X axis travel: 25mm
4. Inclination of workable (enclosure Y axis ): ± 3°
5. Rotary angle of workable: ± 4°
6. Loading of worktable: 10kg
7. Fit dimension of contact tip's internal-diameter: Φ 6H7
8. Fit external dimension of contact tip pole with internal-diameter
Of contact tip: Φ 6g6
Overall dimensions of the instrument (length X width X height): 960 X 390 X 450mm
Weight of the instrument: 150Kg
| Model |
JD25-C |
JD25-D |
| Measurement range |
Absolute measurement (mm) |
0~100 |
0~100 |
| Relative measurement (mm) |
0~670 |
0~670 |
| Internal size(mm) |
When using a small measuring hook |
When maximum extending in depth up to 12, the maximum arm thickness of 50, 10~400 |
When maximum extending in depth up to 12, the maximum arm thickness of 50, 10~400 |
| When using a large measuring hook |
When maximum extending in depth up to 50, the maximum arm thickness of 85, 30~370 |
When maximum extending in depth up to 50, the maximum arm thickness of 85, 30~370 |
| When using a electric measuring hook |
1~60 |
1~60 |
| when using a universal measuring hook |
14~112 |
14~112 |
| Universal worktable |
Area of installation |
160mm×160mm |
160mm×160mm |
| Range of height adjustment |
0~100mm |
0~100mm |
| Transverse travel |
25mm |
25mm |
| Y-Gradient |
±3° |
±3° |
| Rotation of worktable |
±4° |
±4° |
| Fitting size for the measuring cap's internal diameter |
φ6H7 |
φ6H7 |
| Size of outer diameter between the reference rod and the measuring cap's internal diameter |
φ6g6 |
φ6g6 |
|
| Intermediate diameter between internal screws (mm) |
While using a small measuring hook |
small screw diameter of 13~30 |
small screw diameter of 13~30 |
| While using a large measuring hook |
small screw diameter of 31~(70-arm thickness)×2 |
small screw diameter of 31~(70-arm thickness)×2 |
| Screw pitch (mm) |
0.5~6 |
0.5~6 |
| Intermediate diameters between external screws (mm) |
Maximum 200 |
Maximum 200 |
| |
Screw pitch (mm) |
1~6 |
1~6 |
| Measuring force |
|
0N 1.5N 2.5N |
0N 1.5N 2.5N |
| Digital display equivalent |
0.0001mm |
0.0001mm |
| Variability of the instrument display value |
While measuring the external size |
2σ≤0.3μm |
2σ≤0.3μm |
| while measuring the internal size |
2σ≤0.5μm |
2σ≤0.5μm |
| Accuracy |
While conducting absolute measurement for external size |
0.5μm |
0.5μm |
| While conducting absolute measurement for internal size |
1μm |
1μm |
| Load capacity |
10kg |
10kg |
| Overall size (mm) |
960×390×450 |
960×390×450 |
| Weight |
150kg |
150kg |
Audited Supplier 
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