Rekord CK 300-TH CNC Twin Head Circular Knife Grinder up to 13.75 inch – Year 2024

Machine Overview

Rekord CK 300-TH Twin Head CNC Circular Knife Grinder, Year 2024, designed for high-precision sharpening of circular slitter knives and core cutter knives up to 350 mm (13.75″) in diameter. Equipped with dual grinding heads for simultaneous grinding of both bevels, a Windows PC-based PLC control system, touchscreen interface, heavy-duty coolant filtration system, and automatic variable-speed knife rotation. The CK 300-TH provides burr-free grinding, exceptional repeatability, and high production efficiency for knife manufacturers and regrinding facilities.

Technical Specifications

Specification	Metric	Imperial
Manufacturer	Rekord	Rekord
Model	CK 300-TH	CK 300-TH
Year of Manufacture	2024	2024
Machine Type	CNC Twin Head Circular Knife Grinder	CNC Twin Head Circular Knife Grinder
Control System	PLC with Windows Panel PC	PLC with Windows Panel PC
Display	10″ (16:9) Touchscreen	10″ (16:9) Touchscreen
Knife Diameter Capacity	40 – 350 mm	1.6″ – 13.75″
Maximum Stroke	25 mm	1″
Grinding Heads	2	2
Grinding Method	Simultaneous Twin-Bevel Grinding	Simultaneous Twin-Bevel Grinding
Maximum Double Bevel Angle	90° Included (45° per Side)	90° Included (45° per Side)
Single Bevel Grinding Range	-10° to +70°	-10° to +70°
Grinding Motor Power	0.75 kW per Motor	1 HP per Motor
Grinding Wheel Diameter	125 mm	4.92″
Grinding Wheel Bore	20 mm	0.79″
Grinding Wheel Speed	4,700 RPM	4,700 RPM
Knife Rotation Speed	10 – 50 RPM (Variable)	10 – 50 RPM (Variable)
Knife Rotation Drive	Geared Motor	Geared Motor
Quick Change Knife Holder	16 mm	5/8″
Voltage	230/400 V or 480 V, 3 Phase, 60 Hz	230/400 V or 480 V, 3 Phase, 60 Hz
Machine Weight	500 kg	1,100 lbs
Grinding & CNC Features
Grinding Mode	Simultaneous Double-Bevel Grinding	Simultaneous Double-Bevel Grinding
Single Bevel Grinding	Supported	Supported
Primary & Secondary Bevel Grinding	Supported	Supported
Burr-Free Grinding	Yes	Yes
Automatic Knife Rotation	Variable Speed Servo Controlled	Variable Speed Servo Controlled
Electronic Diameter Matching	Yes	Yes
Automatic Wheel Compensation	Programmable	Programmable
Programming Functions	Total Stock Removal, Pass Removal, Spark-Out, Match Diameter	Total Stock Removal, Pass Removal, Spark-Out, Match Diameter
Coolant & Filtration
Coolant System	Heavy Flood Coolant	Heavy Flood Coolant
Coolant Type	Emulsion or Neat Oil	Emulsion or Neat Oil
Magnetic Coolant Separator	Included	Included
Mist Collector	Darwin 600D	Darwin 600D
Machine Features
Cabin	Fully Enclosed	Fully Enclosed
Lighting	Adjustable LED / Low Voltage Target Light	Adjustable LED / Low Voltage Target Light
Lubrication	Manual Centralized Lubrication	Manual Centralized Lubrication
Slide Construction	Roller Bearing Linear Guides	Roller Bearing Linear Guides
Grinding Wheels Supported	CBN, Diamond, Conventional Abrasive	CBN, Diamond, Conventional Abrasive
Fine Knife Centering Adjustment	Included	Included
Wi-Fi Remote Support	USB Wi-Fi Adapter with Remote Diagnostics	USB Wi-Fi Adapter with Remote Diagnostics
Standard Equipment
PLC Control with Windows Panel PC 10″ Touchscreen Interface Dual Grinding Heads Automatic Variable-Speed Knife Rotation Heavy Flood Coolant System Magnetic Coolant Separator Darwin 600D Mist Collector Quick Change Knife Holder Central Lubrication System Roller Bearing Linear Guide Construction CBN / Diamond / Conventional Wheel Capability Fully Enclosed Safety Cabin Wi-Fi Remote Support Package
Applications
Designed for high-volume sharpening and regrinding of carbide and high-speed steel circular slitter knives, core cutter knives, shear knives, paper converting knives, film slitting knives, foil processing knives, packaging blades, tissue converting knives, textile cutting knives, and other precision circular cutting tools.
Machine Features
The Rekord CK 300-TH is a high-production CNC twin-head circular knife grinder engineered for precision, speed, and repeatability. Its dual grinding heads simultaneously grind both bevels to produce burr-free cutting edges while significantly reducing cycle times. The Windows-based programmable control automatically manages stock removal, spark-out, and diameter matching, ensuring consistent knife geometry. Combined with automatic variable-speed knife rotation, heavy-duty coolant filtration, CBN/diamond wheel compatibility, Wi-Fi remote diagnostics, and a fully enclosed working cabin, the CK 300-TH is an ideal solution for professional knife manufacturers and industrial sharpening facilities.