Description
The Notching Tool™ 628-A-4 / A-4E is Toyo Seiki’s advanced, computer-controlled solution for preparing high-quality notched specimens for impact testing. Designed to meet ISO and ASTM standards, it automates all operations except specimen mounting/dismounting, ensuring speed, consistency, and operator safety.
The A-4 version supports notching and specimen-end slicing, allowing users to process ISO multipurpose specimens and cut ends to standard dimensions. The A-4E model is dedicated to notching only for streamlined workflows. Both models feature a touchscreen interface, servo/stepper motor drive, and precision ball screws for 0.01 mm notch height adjustments.
With storage for up to 99 user-defined programs (16 for A-4E), the machine can recall and execute optimised cutting parameters for different materials. The A-4 allows adjustment of cutter speed (200–900 rpm) and table feed rate (50–1200 mm/min), while the A-4E uses a fixed synchronous motor speed.
Safety is built in with an interlocked safety cover, emergency stop, and optional dust tray enhancements. A wide range of notch cutters (including carbide, multi-teeth, and different radii) and slice cutters (standard, staggered, carbide) are available, plus accessories like double-notching holders, cooling devices, and precision gauges.
Compact (30 cm width) yet robust, the 628-A-4 / A-4E is ideal for quality control laboratories, research facilities, and materials testing centres handling plastics, composites, and other materials requiring precise notching.
Features
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Fully Automated Operation — All processes except mounting/dismounting are automatic; notching + slicing for A-4, notching only for A-4E.
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High-Precision Machining — Stepper motor with ball screw, 0.01 mm notch height setting increments.
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Touchscreen Control — Easy setup, operation, and recall of 99 user-defined programs (16 for A-4E).
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Optimised Cutting — Adjustable cutter speed & feed rate (A-4), fixed speed for A-4E; settings matched to specimen material.
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Safety First — Interlocked safety cover, emergency stop switch, and optional dust tray enhancements.
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Compact Design — Only 30 cm wide, ideal for laboratory workbenches.
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Multi-Standard Support — Handles ISO multipurpose specimens; optional slicing collars for ASTM dimensions.
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Customisable Cutting Tools — Wide range of notch and slice cutter options, including carbide and staggered teeth.
Specifications
| Parameter | A-4 | A-4E |
|---|---|---|
| Processing Items | Notching & specimen-end slicing | Notching only |
| Specimen Clamp | Length: 63.5–200 mm; Height: 3–15 mm; Max. clamp clearance: 100 mm (4 mm × 25 specimens) | Length: 63.5–200 mm; Height: 3–15 mm; Max. clamp clearance: 100 mm (4 mm × 25 specimens) |
| Machining Programs | 99 | 16 |
| Notch Height Range | 3–14.99 mm, 0.01 mm steps | Same |
| Table Feed Rate | 50–1200 mm/min | Same |
| Cutter Motor | AC servo, 200–900 rpm | Synchronous motor, 300 rpm (50 Hz) / 360 rpm (60 Hz) |
| Standard V-Notch Cutter | Ø75 mm, 45°, R0.25 mm, SKH (HSS) single-tooth | Same |
| Standard Slice Cutter | Ø100 mm, SKH, 80 mm length (Option: 63.5mm (ASTM D256)) | — |
| Power Supply | 100/115/220 V, 50/60 Hz, 0.8 kVA | 100 V, 50/60 Hz, 0.3 kVA |
| Dimensions | W300 × D700 × H700 mm | W300 × D700 × H700 mm |
| Weight | Approx. 65 kg | Approx. 65 kg |
Videos
Accessories & Options
| Item | Model | Photo | Description |
|---|---|---|---|
| Single-tooth V Notch Cutter (HSS) | 1V75SK |  |
45°, R0.25 (Type A), High Speed Tool Steel. Standard on A-4 / A-4E. Part No. 7505269. |
| Single-tooth V Notch Cutter (Carbide) | 1V75WC | — | 45°, R0.25 (Type A), Carbide. Option. Part No. 7505266. |
| Multi-teeth V Notch Cutter (HSS) | — | — | 45°, R0.25 (Type A), High Speed Tool Steel. Option. Part No. 7505270. |
| Single-tooth V Notch Cutter (HSS) | — | — | 45°, R1.0 (Type B), High Speed Tool Steel. Option. Part No. 7505267. |
| Single-tooth V Notch Cutter (HSS) | — | — | 45°, R0.1 (Type C), High Speed Tool Steel. Option. Part No. 7505265. |
| Slice Cutter (HSS, 2 pcs/set) | S10SK |  |
Standard on A-4 only. High Speed Tool Steel. Slice length 80 mm. Part No. 7505272. |
| Slice Cutter (Carbide, 2 pcs/set) | S10WC | — | Option on A-4 only. Carbide blades for extended life. |
| Slice Cutter (HSS, Staggered Teeth, 2 pcs/set) | S10SKT | — | Option on A-4 only. High Speed Tool Steel. Part No. 7505273. |
| Slice Collar Set (80 mm) | SC80 | — | Standard on A-4 only. Includes 38 mm ×2 & 4 mm ×1 collars for ISO 80 mm slicing. |
| Slice Collar Set (63.5 mm) | SC63.5 | — | Option on A-4 only. For ASTM 63.5 mm specimen slicing. |
| Collar for Notching-only / Slicing-only | C39+4 | — | Option on A-4 only. Special collar set for dedicated operations. |
| Wrench for Cutter Axis Rotation | TCSR | — | Option. Includes socket, extension bar, and ratchet wrench. |
| Centering Holder for Double Notching | WN10 |  |
Option. For 10 mm height samples, max chuck ≈ 40 mm (4 mm × 10 specimens). |
| Reference Point Detecting Jig | SPRDA4 |  |
Option. For precise datum/zero setting. |
| Cooling Device | A4-AC |  |
Option. Uses compressed air ≤ 0.8 MPa for cutting area cooling. |
| Notch Height Gauge (Digital) | D |  |
Option. Stroke 20 mm, min read 0.01 mm, tip angle 40°, R0.2. |
| Check-eye Gauge | CG-1 | — | Option. Visual verification of notch geometry. |
Standards
ISO
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ISO 179
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ISO 180
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ISO 8256
ASTM
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ASTM D256
Brochure
