- No.553-M PENCIL SCRATCH HARDNESS TESTER (ELECTRIC)
- No.553-T PENCIL SCRATCH HARDNESS TESTER (MANUAL)
- No.553-S PENCIL SCRATCH HARDNESS TESTER (HAND PUSH)

Overview of PENCIL SCRATCH HARDNESS TESTER (ELECTRIC)
Instead of moving the pencil arm manually, this model can move automatically.
We also have a double arm model, allowing for testing with 2 pencils simultaneously.
Reference Standards
JIS (C3003), C3216-4, D0202, (K5400), K5600-5-4, K5651, K6894, K6902, K7317, ASTM D2197, D3363, ISO 15184, IEC-60851-4
Operation Video
Specification
| Specifications are subject to change without notice. | |
|---|---|
| Model | No.553-M |
Test Area | M-1: 100×180 mm |
Stroke Length | Side-to-side: max. 100 mm, front-to-back: max. 50 mm |
Pencil Angle | 45˚ (option: for enameled wire 60˚) |
Travel Speed | Adjustable motor control (standard speed 0.5–1 mm/s) |
Test Load | Max. 1 kgf (loaded by a counterweight and additional weights), load adjustable by 50 gf |
Accessories | Mitsubishi uni pencil (6B–9H, total 17 pencils), steel needle (1 pc), pencil sharpener, sandpaper #400, spirit level |
Options | Heating table, device for short circuit detection, enameled wire test compatibility, arm height adjustable specification for thick samples, stroke length limit sensor, JIS K7317 test compatibility (diamond tip needle, weights, glass plate) |
Power Source | AC 100 V 1-phase 3 A 50/60 Hz |
Dimensions and Weight (Approx.) | M-1:W440×D200×H440 mm, 20 kg |

Overview of PENCIL SCRATCH HARDNESS TESTER (MANUAL)
This tester is used to evaluate the hardness of coated film according to the testing machine method.
Scratching the paint surface with a pencil attached at a 45° angle, the operator is to determine the hardest pencil that does not tear or damage the coated film.
The tester can also be used to evaluate the hardness of decorative sheet and resistance to solvents on enameled wire.
By attaching optional jigs, tests compliant with JIS K7317 (scratch hardness test for specialty films) can also be performed.
Reference Standards
JIS (C3003), C3216-4, D0202, (K5400), K5600-5-4, K5651, K6894, K6902, K7317, ASTM D2197, D3363, ISO 15184, IEC-60851-4
Specification
| Specifications are subject to change without notice. | |
|---|---|
| Model | No.553-T |
Test Area | 100×180 mm |
Stroke Length | Side-to-side: max. 100 mm, front-to-back: max. 50 mm |
Pencil Angle | 45˚ (option: for enameled wire 60˚) |
Travel Speed | Handwheel control, 1.75 mm/rotation |
Test Load | Max. 1 kgf (loaded by a counterweight and additional weights), load adjustable by 50 gf |
Accessories | Mitsubishi uni pencil (6B–9H, total 17 pencils), steel needle (1 pc), pencil sharpener, sandpaper #400, spirit level |
Options | Enameled wire test compatibility, arm height adjustable specification for thick samples, JIS K7317 test compatibility (diamond tip needle, weights, glass plate) |
Dimensions and Weight (Approx.) | W510×D170×H300 mm, 10 kg |

Overview of PENCIL SCRATCH HARDNESS TESTER (HAND PUSH)
This tester is used to evaluate the hardness of the coated film with prescript pencil according to the pencil method.
The tester is designed so that the pencil can scratch the testing surface at an angle of 45° and a test load of 750 g.
Reference Standards
JIS K5600-5-4
Specification
| Specifications are subject to change without notice. | ||
|---|---|---|
Loading Method | Single weight loading | 3-weight loading |
Pencil Angle | 45 ± 1˚ | |
Test Load | 750 gf | 500 gf, 750 gf, 1,000 gf |
Accessories | Mitsubishi uni pencil (6B–9H, total 17 pencils), pencil sharpener, sandpaper #1,000, wooden box, additional weights (for 3-weight loading only) | |
Dimensions and Weight (Approx.) | W120×D85×H130 mm, 2 kg | |
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