These motorized apparatus are designed to test coating hardness evaluation based on scratching resistance or mar resistance methods .
A test panel is clamped and slowly moved whilst a stylus or alternative tool scratches the surface. Depending on test procedures, specified or variable loads can be applied to obtain different degrees of failure, from trace to destruction. A voltmeter indicates the contact of the tool with the metallic sample substrate.
◆ Big working table can be moved left and right—convenient for measuring different areas in the same panel
◆ Special fixing device for sample---can test different size substrate
◆ Sound-light Alarm system for puncturing through sample panel---more visual
◆ High hardness material stylus--more durable
Main Technical Parameters：
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Ordering information →
Technical Parameter↓
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BGD 520/1
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BGD 520/2
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BGD 520/3
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Conform Standards
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ISO 1518-1
BS 3900：E2
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ISO 1518-2
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ISO 12317
ASTM D 2197
ASTM D 5178
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Stylus
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1.Having a hemispherical hard-metal tip of radius 0.25mm or 0.5mm
2.Having a hemispherical synthetic-ruby of radius 0.25mm or 0.5mm
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Coned sapphire or diamond, the tip radius is 0.03mm
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Loop-shaped or Ring-shaped
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Angle between stylus and sample
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90°
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90°
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45°
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Weight
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Constant-loading
（50g×2，100 g×2，200 g×1，500 g×1，1000 g×1）
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Variable-loading|
（0g～50g or 0g～100g or 0g～200g）
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Constant-loading
（10g×1，20 g×2，50 g×1，100 g×1，200 g×2，500 g×1，1000 g×1，2000 g×2，5000 g×1，）
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Motor
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60W 220V 50HZ
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Sytlus Moving Speed
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35±5mm/s
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Max Panel Size
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200×100mm
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Tester Size
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500×260×260mm
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Tester Weight
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16 KG
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15 KG
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15 KG
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Gizlilik İlkesi 
; "Otomatik Çizilme Testi")
