Biuged BGD 507/S Automatic Pencil Hardness Tester

The Biuged BGD 507/S Automatic Pencil Hardness Tester is a fully motor‑driven instrument designed to measure the scratch hardness of coatings rapidly, accurately, and without operator‑induced variation. It eliminates the inconsistencies of manual pencil hardness testing by controlling both scratch speed and pencil‑tip force electronically. The system conforms to ISO 15184 and ASTM D3363, ensuring globally recognized hardness results. The tester evaluates coating hardness by moving a pencil of known grade across the coated surface at a controlled speed and force. Unlike manual testers, the BGD 507/S uses a motorized drive and sensor‑controlled loading system to ensure constant pressure and uniform scratch speed. The hardest pencil that does not scratch or gouge the coating determines the coating’s hardness classification.

Key Features

Standards‑Compliant Automatic Operation

Conforms to ISO 15184 and ASTM D3363, with electronically controlled pencil‑tip force and stable scratch speed for repeatable results.

Settable Pencil‑Tip Force (Sensor Controlled)

The instrument allows precise force settings without physical weights:

• 250 g – 1000 g adjustable range

• Supports standard forces such as 500 g, 750 g, 1000 g, and 7.5 N

Force is controlled by sensors, eliminating the need for manual leveling.

Stable, Adjustable Scratch Speed

The scratch movement is motor‑driven with a speed range of:

• 0–10 mm/s

ensuring consistent scratch formation across all tests.

Fixed Scratch Distance

A precise 80 mm scratch length ensures uniform test geometry.

Easy Pencil Fixing Mechanism

A specially designed pencil fixture allows quick, secure installation of pencils for efficient workflow.

Technical Specifications

• Pencil‑tip force range: 250 g – 1000 g

• Scratch speed: 0–10 mm/s

• Scratch distance: 80 mm

• Standards: ISO 15184, ASTM D3363

• Overall size: 430 × 250 × 230 mm (L×W×H)

Ideal Applications

• Paint and coating hardness evaluation

• Industrial coating QC

• Plastic, wood, and metal surface testing

• R&D formulation comparison

• Production‑line hardness verification

Why Choose the Biuged BGD 507/S?

The BGD 507/S provides high‑precision, fully automated pencil hardness testing that eliminates human variability and ensures consistent, standards‑aligned results. Its sensor‑controlled loading, adjustable scratch speed, and stable motorized movement make it far more reliable than manual testers. For laboratories and manufacturers requiring accurate, repeatable hardness data, the BGD 507/S offers a modern, efficient, and professional solution.