Gakushin Colorfastness Abrasion Tester
1. Function and Application
The Gakushin Colorfastness Abrasion Tester is a 6-station rubbing tester used for evaluating crocking, color transfer, and abrasion resistance of leather, fabric, vinyl, stitched seams, plastics, and other materials.
Each station is equipped with:
An adjustable zero-force balanced arm
A removable rub head and retainer, independently weighed
Spring-loaded clamps on the reciprocating table for secure specimen attachment
This allows six unique specimens to be tested simultaneously under controlled conditions. The tester is ideal for automotive, textile, leather, and research laboratories requiring reproducible colorfastness and abrasion testing under dry or wet conditions.
2. Applicable Test Standards
ISO 105-X19 – Textiles: Colorfastness to Rubbing
ISO 874 – Textiles: Colorfastness to Abrasion
JIS 0849 / 0862 / 10801 / 1084 TR 396B – Japanese Industrial Standards for textiles and leather
L0823 Section 3.2 – Automotive Interior Standards
Automotive OEM Standards: Honda, Mazda MES MN 405, Nissan Nes M0155, Subaru, Toyota TSL2106G, TSL5100G, TSL5101G, TR 396B
Internal QC / Laboratory Standards – Configurable per user requirements
3. Technical Specifications
| Item | Specification |
|---|---|
| Number of Stations | 6 independently operated |
| Cycle Rate | Designed 60 CPM, adjustable down to 30 CPM |
| Stroke Length | Standard 100 mm, adjustable to 120 mm (requires minor disassembly) |
| Rub Head Mass | Standard 200 g and 500 g; optional 300 g, 500 g, 800 g |
| Maximum Load per Station | Up to 1,800 g simultaneously |
| Clamp Type | Spring-loaded clamps for specimens, crocking cloths, or abradants |
| Control System | Programmable digital count-up controller with automatic stop; separate jog and test speed controls |
| Construction | Aluminum and solid stainless steel with powder coat and anodized finishes |
| Bearings | Precision needle bearings in the drive mechanism |
| Test Conditions | Wet or dry |
| Safety Features | Polycarbonate cover and base enclosure; double-acting safety switch disables operation when cover is open |
| Motors | High-quality brushless electric motor |
| Heat Management | Fan ventilation exhausts friction-generated heat |
| Optional Features | Flat testing surface, CE compliance |
| Maintenance | Maintenance-free design |
| Warranty | 1 year manufacturer’s warranty |
4. Features and Advantages
High Throughput: Six stations allow multiple specimens to be tested simultaneously.
Adjustable Loads and Rub Heads: Standard 200 g and 500 g rub heads with optional weights up to 1,800 g per station.
Flexible Stroke and Cycle Rate: Adjustable stroke length (100–120 mm) and cycle rate (30–60 CPM) for precise simulation of real-world abrasion.
Wet or Dry Testing: Supports distilled water or synthetic perspiration testing.
Durable Construction: Aluminum and stainless steel components with powder-coated/anodized finishes ensure long-lasting operation.
Precision Mechanics: Needle bearings provide smooth, repeatable motion.
Safety-Oriented Design: Polycarbonate cover, base enclosure, and double-acting safety switches protect operators.
Digital Control System: Programmable count-up controller, separate jog and speed controls for easy operation.
Maintenance-Free: Designed for long-term use with minimal upkeep.
Industry Compliance: Suitable for ISO, JIS, OEM automotive standards, and CE optional compliance.
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