Product Overview

The KR‑858 Schopper rotary abrasion tester is a specialised laboratory instrument for evaluating surface wear‑resistance performance of woven fabrics, knitted textiles, automotive interior fabrics and coated flexible substrates. Following the Schopper rotary‑scrub principle, a circular specimen is mounted on a conical rotating chuck. The specimen rotates and maintains linear contact against standard abrasive sandpaper, generating tangential directional friction. Operators assess material durability by observing surface appearance degradation, fibre loosening or specimen breakthrough after preset abrasion cycles.

This touch‑screen‑operated device strictly complies with DIN 53863‑Part 2, GME 60345, GMW 3283 and VW/Audi PV 3908 automotive material specifications. It is widely deployed within automotive component suppliers, textile‑manufacturing enterprises, material‑R&D institutes and accredited third‑party QC laboratories for material incoming validation and finished‑product durability assessment.

Core Product Competitive Advantages

1. Standard‑Compliant Conical Rotary‑Friction Mechanism Precision‑machined 166° conical clamping fixture holds 100 cm² circular specimens, delivering a 50 cm² effective abrasion zone. Specimen‑arch‑height is adjustable within 5‑8 mm, ensuring consistent linear‑contact tangential‑friction, replicating real‑world concentrated‑stress wear conditions for automotive‑interior textiles.
2. Multi‑Grade Weight‑Loading System for Variable Test Pressure Supports combinatorial weight‑loading with six standard counterweights: 50 g, 100 g, 250 g, 500 g, 1000 g and 1500 g. It covers pressure‑requirements from low‑load delicate textiles up to heavy‑stress interior‑material testing, matching diverse automotive‑industry‑standard pressure‑settings.
3. Dual‑Mode Touch‑Screen Control with Auto‑Direction‑Switching Colour touch‑screen interface offers Chinese‑English bilingual menu‑driven operation. Built‑in 32‑bit micro‑controller supports both automatic and manual test‑modes. The unit auto‑stops and reverses rotation direction upon completing every 100 abrasion cycles, avoiding one‑sided uneven‑wear and improving test‑result repeatability.
4. Interchangeable Multi‑Purpose Friction‑Head Assembly Modular friction‑head design allows quick swapping of abrasive‑paper fixture or bristle‑brush attachment. One host completes abrasive‑sandpaper scrub‑testing as well as bristle‑brush surface‑scuff evaluation, expanding test‑coverage for varied‑material‑assessment‑scenarios.
5. Silent Drive & Robust Electrostatic‑Sprayed Cabinet Optimised low‑noise motor‑drive system maintains stable 75 r/min rotating‑speed during long‑duration batch‑testing. The cabinet‑body adopts electrostatic‑spray surface‑treatment, anti‑scratch and easy‑to‑clean. Level‑adjustable support feet stabilise the whole machine on uneven lab‑bench surfaces.