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SJ - 310 – Portable Surface Roughness Tester - Measurement Systems - Mitutoyo - Indicate Technologies
SJ - 310 – Portable Surface Roughness Tester - Measurement Systems - Mitutoyo - Indicate Technologies

SJ-310 – Portable Surface Roughness Tester

The Surftest SJ-310 is a handy and user-friendly surface roughness measurement device that comes in a small size and is easily transportable. It is designed with a wide range of measurement and analysis capabilities for surface roughness.

Product Features 

The Surftest SJ-310 is equipped with a 5.7-inch color graphic LCD touch-panel display, which is back-lit for enhanced readability even in dark environments.

The user interface is designed to be intuitive and easy to understand, ensuring user-friendly operation.

The Measure-Start button and other frequently used buttons are reinforced to withstand wear and resist contamination in workshop settings.

With a large-capacity battery, the Surftest SJ-310 can perform approximately 1500 measurements on a full charge.
The built-in high-speed printer is capable of printing measurement results in both landscape and portrait mode to accommodate different applications.

The instrument has internal memory that can store up to 10 measurement conditions and one measured profile.

If more storage capacity is needed, an optional memory card can be used to store a larger quantity of measured profiles and conditions.

The Surftest SJ-310 complies with various standards, including JIS (JIS-B0601-2001, JIS-B0601-1994, JIS B0601-1982), VDA, ISO-1997, and ANSI.

Technical Specifications


Technical Data

The Surftest SJ-310 is a portable and compact surface roughness measuring instrument that delivers precise outcomes. It features a detector that supports multiple measurement orientations, enabling measurements to be taken vertically or even upside-down. 

Moreover, the Surftest SJ-310 is equipped with a built-in thermal printer, allowing operators to instantly print measurement results on-site.
Technical Data
Measuring Speed:
.01, .02, .03 in/s / .25, .50, .75 mm/s

Returning Speed:
.039in/s / 1mm/s

Detector Z-Range:
1000, 14400, 4000μin / 100, 25, 360μm

Detector Z-Range Resolution:
.08, .20, .80μin / .002, .006, .02μm

Skid Radius of Curvature:

Skid Force:
less than 400mN

Detector Type:
Differential inductance

Power Supply (battery): Rechargeable Ni-MH

Power Supply:
AC Adapter

Charging Time:
4 hrs

1000 measurements (approx)

External I/O:
Digimatic output, Footswitch I/F, Printer output, RS-232C I/F, USB I/F

External Data Storage:
Micro SD card

Display Unit:
10.8x4.29x7.8" / 275x109x198mm

Drive Unit:
4.5x9x1" / 115x23x26mm

Display Unit Mass:
3.7lbs /1.7kg

Drive Unit Mass:
.2 to .4kg