Mitutoyo SJ-220 Surface Roughness Testers, Retractable Drive Unit Type 0.75mN

Description

The Mitutoyo SJ-220 Retractable Drive Unit (0.75mN type, order number 178-743-13) is a portable surface roughness tester designed for precise, on-site measurements. It features a retractable detector that helps prevent damage to the stylus, which is especially useful when measuring workpieces with jigs or in automated setups.

Key features

• Measuring force: 0.75mN.
  
• Detector type: Differential inductance.
  
• Stylus tip: Diamond with a 2µm radius and a 60° angle.
  
• Measuring range (Z-axis): 360µm, with a resolution as low as 0.002µm.
  
• Measuring length (X-axis): 17.5mm.
  
• Measuring speed: 0.25, 0.50, and 0.75 mm/s.
  
• Display: 2.8" color graphic touchscreen LCD with backlight.
  
• Battery: Rechargeable Ni-MH, capable of approximately 1,000 measurements per charge.
  
• Connectivity: USB interface for communication with a PC. Optional wireless communication is available with the U-WAVE-TIB accessory.
  
• Data storage: Internal memory for up to 10 measurement conditions and 1 measured profile. An optional microSD card can expand storage capacity significantly.
  
• Compliance: Meets multiple international surface roughness standards, including the latest ISO 21920, ISO 4287, JIS, ASME, and VDA.
• Stylus protection: The detector can be retracted by 1mm, which helps to avoid accidental contact with the workpiece or fixtures when placing or moving the tester.
  
• Flexibility: The drive unit can be detached from the display unit and connected with a cable, allowing for measurements in locations that are difficult to access.
  
• Automation integration: Its design makes it suitable for use in automated measuring equipment.