The Chotest RSJ5718 is a versatile, high-precision contour and roughness measuring instrument designed for demanding inspection and measurement tasks in manufacturing and quality control. It combines robust mechanical components, sensitive probe technology, and powerful measurement software to reliably capture and evaluate contours, geometric profiles, and roughness parameters.

This instrument is particularly suitable for analyzing functional geometries, dimensional control, surface roughness, and generating comprehensive measurement reports for production parts in industries such as mechanical engineering, metalworking, automotive, and precision manufacturing.

Key Features

• Contour and profile measurement with high spatial resolution
• Integrated roughness measurement (optional) with fine resolution and wide parameter range
• Motorized X and Z axes for automated measurement movements
• Measurement software for contour and roughness data analysis
• Robust design with stable measurement bed
• Expandable with additional roughness probe and software upgrade options
  
   

Technical Data

General Machine Data

• Model: RSJ5718 Series – Contour and Roughness Measuring Instrument
• Measurement Principle: Probe-based contour and profile measurement with optional integrated roughness measurement
• Axes: Motorized X and Z axes
• X Travel Range: 0 to 100 mm
• Z Travel Range: 0 to 300 mm
• Table Size: approx. 600 × 350 mm
• Dimensions (L × W × H): approx. 600 × 350 × 890 mm
• Weight: approx. 115 kg
• Machine Construction: Stable precision construction for laboratory and production environments
• Operating Environment: Temperature-stable environment recommended
  
   

Contour and Profile Measurement (RSJ5718-P)

• Z1 Range: ±30 mm
• Z Resolution: 0.001 µm
• X Display Error: ±(0.6 + 0.02L) µm, L in mm
• Z1 Display Error: ±(0.6 + 0.05H) µm, H in mm
• Standard Sphere Deviation: ≤ (1.2 + R/15) µm, R in mm
• Straightness Deviation: ≤ 0.5 µm per 100 mm
• Angular Error: ≤ ±1 minute
• X/Z Positioning Speed: 0 to 20 mm/s
• Scanning Speed: 0.05 to 5 mm/s
• Maximum Probe Tip Angle: Uphill 77° / Downhill 88°
• Probe Force (Profile): approx. 30 mN, depending on the probe used
  
   

Roughness Measurement (RSJ5718-R, Optional)

• Z0 Range: ±400 µm, optionally extendable to ±1000 µm
• Sensor: Rail-free roughness sensor
• Ra Measurement Range: 0.1 to 64 µm
• Resolution: 0.001 µm
• Display Error: ≤ ±(5 nm + 2.5 % A), A = Ra value
• Repeatability: ≤ 1 nm
• Scanning Speed: 0.05 to 0.5 mm/s
• Measurement Deviation: ≤ 0.005 µm
• Sampling Lengths: 0.008 / 0.08 / 0.25 / 0.8 / 2.5 / 8 / 25 mm
• Filters: 2RC, Gaussian, and zero-phase filters
• Roughness Parameters: Ra, Rz, Rp, Rv, Rt, Rq, Rsk, Rku, Rk, Rpk, Rvk and other ISO/JIS compliant parameter
  
   

Software & Functions

The SJ5718 is delivered with measurement and evaluation software that:

• Graphically displays and analyzes contour and profile data
• Calculates and records roughness parameters according to international standards
• Allows automatic filtering and statistical evaluation

The user interface is intuitive and designed for operators in production or quality laboratories.

Applications

The Chotest RSJ5718 is ideal for:

• Measuring and analyzing contours and profiles of precision parts
• Surface and roughness inspection according to ISO/JIS standards
• Quality control in production, laboratory, or workshop environments
• Applications in mechanical engineering, automotive, electronics, and metalworking industries