Surface Roughness

Get a quote：

Whats/App: +86 181 0160 0864

Web: gellowen.co.uk

The Surface Roughness / Friction Tester is an upgraded version of the FB4-A instrument, designed to evaluate the frictional feel and surface roughness of materials by simulating human touch. It quantifies “smoothness,” “slip,” and “roughness” through measurements of friction coefficient (MIU), friction coefficient deviation (MMD), and surface roughness (SMD). This instrument is suitable for fabrics, hair, and other soft-touch materials, providing objective data to support tactile performance evaluation.

Application

You can use this instrument to measure and analyze surface friction and roughness for a wide range of materials:

Textiles: fabrics, gauze, nonwovens.

Hygiene products: diapers, sanitary napkins, and other soft materials.

Cosmetic packaging: assess smoothness and tactile quality.

Hair testing: analyze softness and smoothness of human or animal hair.

Furniture and automotive interiors: leather, synthetic leather, seat materials, and other surfaces requiring frictional evaluation.

Standards

This instrument supports the following international and national testing standards:

(1) GB/T 12602-1990 – Textile friction performance test methods

(2) ASTM D1894-14 – Determination of static and kinetic coefficient of friction of plastics

(3) ISO 8295:1995 – Plastics, films and sheets: Determination of friction coefficient

(4) JIS L1096-1999 – General methods for textile testing

Parameters

Parameter	Specification
Device Dimensions / Weight	Main unit: W320 × D200 × H390 mm / 10 kg; Electronic amplifier: W180 × D400 × H400 mm / 12 kg
Power Supply	AC 100 V, max 30 W
Operating Environment	20–30°C, 50–70% RH (Standard: 20°C, 65% RH)
Testing Method	Friction coefficient, friction coefficient deviation (MMD), surface roughness (SMD)
Load Range	200 gf (standard), 1000 gf (low sensitivity)
Measurement Accuracy	Friction: ±0.5% FS; Surface roughness: ±1.0% FS
Maximum Displacement	30 mm (effective 20 mm)
Sample Size	30 × 270 mm (standard)
Friction Sensor Size	10 × 10 mm (single measurement)
Measurement Speed	1, 2, 5, 10 mm/sec (adjustable)
Roughness Contact	0.5 mm metal wire, 5 mm contact width

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