KR310 Split-Type Surface Roughness Tester with Touch Screen & Bluetooth

KR310 Split-Type Surface Roughness Tester

Bring the probe to the workpiece instead of moving a heavy part to the bench. The KR310 combines a detachable stylus drive with a 3.5-inch color touchscreen, making it easier to inspect machined surfaces on site, on a production line or in the quality-control area. Use the drive attached to the main unit for routine checks, or connect it with the included 1 m extension cable when access or orientation calls for a more flexible setup.

Why it works on the shop floor

• Read results clearly: backlit 3.5-inch color touchscreen displays measurement parameters and graphics; operate with the touchscreen or buttons.
• Reach different surfaces: split-type drive and included KS130 groove sensor support work on flat surfaces and grooves. Other specialty sensors are available separately for different shapes and access requirements.
• Keep inspection records: store up to 100 sets of raw data and curves; a real-time clock helps identify saved measurements.
• Print when needed: Bluetooth connectivity supports wireless printing with an optional compatible printer.
• Work between charges: built-in 3200 mAh lithium-ion battery, with a stated runtime of more than 50 hours when fully charged.

Technical specifications

• Measurement range: Z axis 320 μm (−160 to +160 μm); transverse travel 17.5 mm.
• Vertical resolution by range: 0.002 μm at ±20 μm; 0.004 μm at ±40 μm; 0.008 μm at ±80 μm; 0.02 μm at ±160 μm.
• Ra and Rq range: 0.005–32 μm. Listed Rz, R3z, Ry, Rt and Rp range: 0.02–320 μm.
• Listed parameters: Ra, Rz, Rq, Rt, Rp, Rv, R3z, R3y, Rz (JIS), Ry, Rs, Rsm, Rsk, Rku, Rmax, Rc, Rpc, Rk, Rpk, Rvk, Mr1 and Mr2.
• Graphs: Rmr curve, roughness curve and primary profile. Filters: RC, PC-RC, Gauss and D-P.
• Sampling lengths: 0.25, 0.8 and 2.5 mm; assessment length: 1–5 sampling lengths.
• Stylus: diamond tip, 90° cone angle and 5 μm tip radius; measuring force <4 mN.
• Stated repeatability: ≤3%; residual profile ≤0.010 μm.
• Dimensions: main unit 158 × 55 × 52 mm; drive unit 23 × 27 × 115 mm. Main unit weight: approximately 380 g.
• Operating conditions: −20°C to 40°C; relative humidity <90%.

What is included

KR310 main unit (1), KS130 groove sensor (1), height adapter (1 set), calibration block (1), calibration-block bracket (1), 1 m extension cable (1), touch pen (1), power charger and USB cable, user manual and instrument case. The original package listing states a two-year warranty and identifies the sensor as a non-warranty part.

Download the KR310 user manual

Optional accessories

For other inspection setups, available optional items include the KS55 extension rod, KS90 right-angle rod, KS100 small-hole sensor, KS110 curved-surface sensor, KS120 very-small-hole sensor, KS131 and KS132 deeper-groove sensors, magnetic base, measuring platforms, height-gauge adapter and mini printer. Software and mobile app are also listed as optional. The KS130 groove sensor is included in this product’s standard package, not an extra purchase for this configuration.