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GRAFS SR Semi-Auto

We are a family-run machine manufacturer based in eastern Poland. All our machines are 100% manufactured at the GRAFS factory in Poland.

We present our robust, user-friendly straight knife grinding machine, suitable for a wide range of industrial applications, particularly for:
- various recycling knives,
- chipper and shredder knives (e.g. ALBACH, JENZ, BRUKS),
- planer knives,
- guillotine knives,
- shredder knives,
- granulator knives.
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The semi-automatic grinding machine model GRAFS SR Semi-Auto is available in various grinding lengths:
1,200 mm, 1,800 mm, 2,100 mm, 2,400 mm, 3,000 mm.
Please let us know which grinding length you require when making your enquiry.

TECHNICAL FEATURES OF THE GRAFS SR MODEL
- Handwheel for vertical infeed of the grinding motor
- Automatic mechanical infeed system (from 0.003 mm to 0.03 mm)
- Adjustable grinding parameters during operation (infeed, number of passes, spark-out)
- Grinding head angle adjustable from 0–10° (for surface grinding operations)
- Swivel-mounted electromagnetic table with ±120° scale, "S" polarity, magnetic force 120 N/cm², with T-slot on the operator side for secure knife clamping
- Replaceable, hardened steel guides on the machine carriage – ensure long service life
- Manual positioning of the grinding head above the workpiece (drive unit can be locked/unlocked via lever)
- Cross movement of the carriage on the Y-axis, for precise alignment to different knife angles
- Rapid vertical travel of the grinding motor for quick setup and easy grinding wheel change
- Reversible grinding wheel rotation direction
- Powerful 7.5 kW grinding motor, suitable for wheels Ø 175–250 mm
- Specially designed, vibration-free grinding head with soft start
- Quick-change system for grinding wheels: special adapter on the motor shaft allows changing any grinding wheel (CBN, DIA, segment) with just 3 screws
- Automatic external magnetic coolant separator – Model MS60
- Infinitely variable carriage speed from 1–16 m/min
- Fine adjustment of carriage speed via potentiometer
- Precision scale displaying infeed amount or grinding head position
- Precision scale for knife angle
- Full documentation: operating and maintenance manuals, electrical diagrams in English / German / Czech / Spanish, including EU Declaration of Conformity
- Machine base protected by polyurethane anti-corrosion coating with acrylic finish
Paint finish: RAL 7012 or RAL 7035, carriage and slide RAL 7021
- Adjustable, vibration-damping leveling feet
- LED work light in the grinding area
- Compact control cabinet mounted at the rear of the machine body
- Coolant supply to both sides of the grinding wheel via two nozzles
- Packaging, shipping preparation, and truck loading included in delivery

FEATURES
- Automatic infeed via mechanical ratchet feed system
- Grinding head angle adjustment 0–10° (for surface grinding)
- Infinitely variable carriage/head speed 1–16 m/min
- Manual positioning of the grinding head above the workpiece
- Carriage movement along Y-axis
- Grinding of knives up to 360 mm in height
- Rapid vertical travel of the grinding motor for easy setup and wheel change.

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