Hardness test station Model 450

abrasionuniversalautomatic

Overview
The Model 450 scratch test station according to BMW/ERICHSEN is a PLC-controlled test system designed to perform reproducible scratch tests on paint and plastic surfaces. The system consists of a base unit with a servomotor-driven XY sample table and a manual Z drive with universal tool holder and pneumatic tool feed, plus a separate control unit with an integrated touchscreen for inputting test parameters. Test load is adjusted using slip-on weights.

Scratch test modes

• Line scratching = single linear movement
• Parameters: length / speed
• Rubbing = repeated linear movements at the same position
• Parameters: length / speed / number
• Matrix = latticed linear movement
• Parameters: x length / y length / mesh size / speed
• Circuit = single circular motion
• Parameters: circle diameter / path speed
• Lissajous figure = superposition of two vertical sinusoidal movements with slight frequency difference
• Parameters: frequency / amplitude / number

Scope of delivery

• Scratch Test Station acc. to BMW/ERICHSEN, Model 450, comprising a base unit and a control unit
• Mains cable CEE 16A (5 m)
• 4 clamping claws
• Air hose (5 m)
• Tool adapter for test tip
• Test tip acc. to ISO (Ø 1 mm)
• 7 load weights
• 2 fork wrenches
• 2 Allen keys
• Operating manual

Standards

• BMW GS 97034-2
• BMW GS 97034-3
• BMW GS 97034-8
• BMW GS 97034-9
• BMW GS 97034-11

Technical specifications

• Drive: Electric
• Maximum speed: 1000 mm/s
• Power supply: 400 VAC, 50/60 Hz; TN or TT network
• Specimen size (max): 350 mm x 250 mm x 5 mm (L x W x H)
• Testing force: 3–30 N
• Scratch profiles: Van Laar, Bosch, ISO, Clemen, BMW, etc.
• Test load range: (3–30) N // (1‑N grading)
• Compressed air supply: min. 5 bar, max. 10 bar
• Base unit net weight: approx. 115 kg
• Control unit dimensions (W x D x H): approx. 600 mm x 450 mm x 570 mm
• Control unit net weight: approx. 40 kg
• Base instrument dimensions (W x D x H): approx. 1100 mm x 720 mm x 1000 mm

Characteristics / specifications

• PLC-controlled operation with touchscreen input
• Servomotor-driven XY table and manual Z drive with pneumatic tool feed
• Variable test load via slip-on weights (3–30 N)
• Multiple programmable test modes (line, rubbing, matrix, circuit, Lissajous)
• Suitable for paint and plastic surface testing in R&D and quality control