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Universal Length Measuring Machine
JD25-D / JD25-C Digital Universal Length Measurer
**Application**
The digital universal length measurer is a precision measuring instrument used for both absolute and comparative measurements. It is widely applied in the metalworking industry, especially in measuring rooms, inspection stations, and other industrial fields such as tool-making and measurement equipment manufacturing. This device ensures high accuracy and reliability for a wide range of dimensional inspections.
**Features**
1. High-quality cast-iron base provides excellent stability after long-term natural seasoning.
2. Optimized design ensures high performance and precision.
3. A variety of accessories are available, offering excellent versatility.
4. Equipped with an optical grating measuring system that displays results digitally for clear and accurate readings.
5. The infrared illumination system is low voltage, energy-efficient, compact, and has a long lifespan.
6. Utilizes Abbe’s principle and a high-precision measuring system to ensure superior measurement accuracy.
**Specifications**
This device is suitable for measuring various types of workpieces, including:
- Smooth cylindrical parts (such as shafts, holes, plug gauges, and ring gauges)
- Mid-diameter of internal and external threads, thread plug gauges, and ring gauges
- Workpieces with parallel planes (such as calipers, length bars, and low-grade measuring blocks)
**Technical Parameters**
- **Measuring Range (mm):**
- External Size: Absolute: 1–100, Comparative: 0–670
- Internal Size:
- With small measuring hook: 10–400 (max depth 12, max wall thickness 50)
- With large measuring hook: 30–370 (max depth 50, max wall thickness 85)
- With electronic measuring hook: 1–60 mm
- With universal measuring hook: 14–112 mm
- **Internal Thread Mid-Diameter:**
- Small measuring hook: 13–30 mm
- Large measuring hook: 31–(70 – wall thickness) × 2 mm
- Pitch: 0.5–6 mm
- **External Thread Mid-Diameter:**
- Maximum: 200 mm
- Pitch: 1–6 mm
- **Measuring Force (N):** 0, 1.5, 2.5
- **Digital Resolution:** 0.1 μm
- **Accuracy Repeatability:**
- External Size: ≤0.3 μm
- Internal Size: ≤0.5 μm
- **Accuracy of Instrument:**
- For external size: (0.5 + L/200) μm for JD25-D and 0.5 μm for JD25-C
- For internal size: (1 + L/100) μm for JD25-D and 1 μm for JD25-C
**Universal Worktable Specifications**
- Installation size: 160 × 160 mm
- Height adjustment range: 0–100 mm
- X-axis travel: 25 mm
- Y-axis inclination: ±3°
- Worktable rotation: ±4°
- Load capacity: 10 kg
- Contact tip internal diameter fit: φ6H7
- Contact tip pole external diameter fit: φ6g6
**Overall Dimensions & Weight**
- Dimensions: 960 × 390 × 450 mm
- Weight: 150 kg
This digital universal length measurer is ideal for precise and reliable measurements in industrial settings, offering flexibility, durability, and high accuracy. Whether you're working with threads, cylinders, or flat surfaces, this device is designed to meet your demanding measurement needs.