Paper & packaging
Converting & Slitting
Circular knives and compatible bottom knives used in paper converting, flexible packaging, film, foil and label production.
MVM-Businaro | Industrial sharpening
Industrial Circular Knife Sharpening Machines
– CK 500 & CK 300 TH
Specialist circular knife and slitter blade sharpening machinery for accurate bevel grinding, consistent batch work and reliable industrial cutting performance. Supplied and supported Australia-wide by Tuckwell Machinery.
Circular knife grinding specialists
Precision Sharpening for Circular Knives, Bottom Knives & Slitter Blades
Tuckwell Machinery supplies MVM-Businaro circular knife grinders for paper converting, packaging, plastics, food processing, textile cutting and other industrial applications. The CK 500 and CK 300 TH are designed for accurate, repeatable sharpening of compatible circular knives, with different capabilities to suit the blade geometry and production requirements.
The CK 500 combines versatile single- and double-bevel grinding with specialist bottom-knife and batch-processing capabilities. The CK 300 TH uses two grinding heads to machine both bevels simultaneously, reducing cycle time and producing a burr-free cutting edge. Both models offer PLC-controlled operation and precise adjustment for industrial sharpening work.
Whether you are bringing slitter blade sharpening in-house, maintaining mixed knife sets or improving turnaround on repeated sharpening jobs, our team can help assess the right machine, grinding setup and optional equipment for your requirements.
CK 500: knives up to Ø550 mm•CK 300 TH: twin-head grinding•Precision batch sharpening•Australia-wide support
Industrial cutting applications
Circular Slitter Blade Sharpening & Industrial Knife Maintenance
Circular knives without teeth are used in many converting and cutting processes. The appropriate machine and grinding arrangement depend on the knife material, geometry and required cutting edge.
Industrial materials
Plastics, Rubber & Textiles
Knife maintenance for compatible circular cutting tools used in plastics, rubber, foam, insulation, textiles and non-woven materials.
Production & sharpening
Food Processing & Blade Workshops
Repeatable sharpening for compatible circular knives in production facilities and specialist sharpening workshops, with material and workholding suitability confirmed.
For toothed circular saw blades, straight planer or chipper knives, the appropriate grinding machinery is different. Tuckwell can help identify the correct machine for the cutting tool.
Choose the right machine
CK 500 & CK 300 TH: Two Specialist Grinding Solutions
Both machines sharpen circular knives, but their grinding arrangements and strongest applications differ.
CK 500 | Versatile grinding
Circular & Bottom Knife Sharpening
Up to Ø550 mm circular knives, single- and double-bevel grinding, bottom knives and repeatable batch work. Well suited to workshops handling varied blade geometries.
CK 300 TH | Twin-head grinding
Simultaneous Bevel Grinding
Up to Ø350 mm circular knives, twin-head simultaneous grinding, fine cutting-edge centring and repeatable batch sharpening for compatible blades.
MVM-Businaro CK 500
CK 500 – Circular Knife Grinder for Knives up to 550 mm
The CK 500 is a versatile PLC-controlled circular knife sharpening machine for compatible circular knives and bottom knives. Its short setup times, guided touch-screen programming and precise bevel adjustment make it a practical choice for mixed-knife workshops and converting plants.
Specialist Batch & Bevel Capabilities
The CK 500 can grind batches of single-bevel knives to a consistent diameter, bottom knives to a consistent thickness, and double-bevel knives with the cutting edge centred on the knife body. This is especially useful when a production line relies on matched knife sets or repeated blade geometry.
- Single-sided and double-sided bevel grinding
- Bottom-knife sharpening and consistent batch thickness
- Batch grinding to a consistent knife diameter
- Accurate bevel adjustment for varied knife geometries
CK 500 machine construction
CK 500 Control, Grinding & Workholding Features
The CK 500 combines programmable operation with the flexibility needed for different circular-knife and bottom-knife sharpening applications.
Grinding & Machine Features
- Grinding of circular knives and bottom knives
- Single-sided and double-sided bevel capability
- Electronically controlled variable knife rotation speed
- Quick circular-knife mounting and straightforward bevel adjustment
- Full working-area enclosure with LED lighting
- Manual centralised lubrication
PLC Control & Batch Processing
- Panel PC with 10-inch (16:9) touch-screen display
- Guided menus for entering grinding parameters
- Automatic-cycle monitoring, including remaining and total cycle time
- Grinding-spindle motor load-current display
- Batch processing for consistent diameters or bottom-knife thicknesses
- Compatible with emulsion coolant or neat oil
CK 500 technical data
CK 500 Technical Specifications
The following machine specifications are consistent with the MVM-Businaro technical data.
| Specification | CK 500 |
|---|---|
| Maximum circular knife diameter | 550 mm |
| Bevel angle range | +70° to –10° |
| Knife spindle slide stroke | 150 mm |
| Grinding wheel diameter | 150 mm |
| Grinding wheel bore | 20 mm |
| Grinding wheel speed | 4,250 rpm |
| Grinding wheel motor power | 1.5 kW |
| Installed power | 4 kVA |
| Net weight | 682 kg |
MVM-Businaro CK 300 TH
CK 300 TH – Twin-Head Circular Knife Sharpener for Fast, Burr-Free Results
The CK 300 TH is designed for circular knives where both bevels need to be ground accurately and efficiently. Its two grinding heads work on opposite sides of the knife simultaneously, reducing processing time and producing a burr-free cutting edge.
Simultaneous Grinding & Precise Edge Centring
Fine lateral adjustment allows the knife position to be set for accurate cutting-edge centring. The machine also supports single-bevel grinding and batch sharpening to a consistent diameter, giving workshops flexibility beyond its twin-head operation.
- Simultaneous grinding of both bevels
- Burr-free cutting-edge finishing
- Fine lateral adjustment for edge centring
- Single-bevel sharpening capability
- Repeatable batch processing for knives of the same diameter
CK 300 TH machine construction
CK 300 TH Twin-Head Grinding & PLC Features
The CK 300 TH combines simultaneous bevel grinding with controlled knife rotation, accurate adjustment and programmable working cycles.
Twin-Head Grinding Features
- Two grinding heads for simultaneous bilateral bevel grinding
- Single-sided bevel grinding capability
- Fine lateral knife-position adjustment for accurate edge centring
- Electronically controlled variable knife rotation speed
- Easy bevel angle adjustment and quick knife mounting
- Fully enclosed working area with adjustable LED lighting
Control & Repeatable Production
- PLC control with a 10-inch (16:9) touch-screen panel PC
- Guided menu for setting grinding parameters
- Batch sharpening of knives to a consistent diameter
- Display of grinding-motor load current and cycle times
- Grinding with emulsion coolant or neat oil
- Manual centralised lubrication
CK 300 TH technical data
CK 300 TH Technical Specifications
The manufacturer’s principal grinding capacities and machine specifications are shown below.
| Specification | CK 300 TH |
|---|---|
| Maximum circular knife diameter | 350 mm |
| Grinding wheel diameter | 125 mm |
| Grinding wheel bore | 20 mm |
| Grinding wheel speed | 4,400 rpm |
| Bilateral bevel angle | Up to 90° |
| Unilateral bevel angle | Up to 45° |
| Grinding wheel motor power | 0.75 kW |
| Installed power | 4.5 kVA |
| Net weight | 710 kg |
Machine configuration
Knife Materials, Coolant & Optional Equipment
The correct grinding wheel, coolant and workholding arrangement should be selected for the knife material and required edge finish.
Knife Materials & Grinding Setup
- Carbon steel and stainless steel knives
- HSS and solid carbide knives
- Emulsion coolant or neat oil
- Grinding-wheel selection to suit the material and required edge
- Configuration advice for compatible circular knives and slitter blades
Optional Equipment
- Coolant facilities and filtration systems
- Mist extraction units designed for the grinding application
- Automatic centralised lubrication with programmable electropump
- Teleservice / remote-assistance programme
- Optional equipment and current configuration confirmed at enquiry
Optional equipment is not included as standard unless specified in the quotation. Grinding mist extraction and coolant filtration must be selected for the machine and process; general woodworking dust collectors are not a substitute for an appropriately specified system.
Compare the models
CK 500 vs CK 300 TH – Which Machine Is Right for You?
The right choice depends on your knife dimensions, bevel geometry, batch requirements and preferred grinding process.
| Requirement | CK 500 | CK 300 TH |
|---|---|---|
| Maximum circular knife diameter | 550 mm | 350 mm |
| Grinding arrangement | Single grinding head; unilateral and bilateral bevels | Twin heads; simultaneous bilateral bevels, also unilateral |
| Bottom-knife sharpening | Yes; including consistent batch thickness | Not listed as a standard application |
| Batch processing | Consistent knife diameter or bottom-knife thickness | Consistent knife diameter |
| Cutting-edge centring | Double-bevel centring capability | Fine lateral knife-position adjustment |
| Best suited to | Mixed knife sets, bottom knives and varied bevel requirements | Repeated double-bevel sharpening where simultaneous grinding is beneficial |
| Control | PLC with 10-inch touch screen | PLC with 10-inch touch screen |
The CK 300 TH’s twin-head arrangement can reduce processing time for suitable double-bevel knives. Actual cycle times and finishing results depend on the knife, material, grinding setup and operating parameters.
Choosing the correct grinding platform
How the CK Machines Differ from Other Circular Knife Grinders
Tuckwell also supplies other grinding platforms for circular knives and cutting tools. The CK models are particularly relevant when their specialised bevel, batch or twin-head capabilities match the work.
CK 500 / CK 300 TH
- CK 500: bottom knives, varied bevels and consistent batch dimensions
- CK 300 TH: simultaneous double-bevel grinding and fine edge centring
- Both: PLC-controlled circular-knife sharpening for compatible materials
Other Grinding Requirements
- The LA500 / LA700 rotary table surface grinding machines offer rotary-table grinding for circular blades, discs and suitable workpieces.
- The LT500 automatic circular knife grinding machine uses a tangential grinding wheel, with optional face grinding, for bevelled circular knives and counter-blades.
- The MVM Straight Knife Grinders range is designed for straight planer, chipper and other compatible straight knives.
Technical resources
CK 500 & CK 300 TH Product Brochures
Download the manufacturer brochures for detailed machine information, technical specifications and configuration options.
CK 500 – Circular & Bottom Knife Sharpening Machine
Technical information for the CK 500, including its grinding applications, machine specifications and optional equipment.
Download CK 500 PDF →CK 300 TH – Twin-Head Circular Knife Grinder
Technical information for the CK 300 TH, including simultaneous bevel grinding, machine specifications and available options.
Download CK 300 TH PDF →Machine details checked against the manufacturer’s published specifications. CK 500 technical information · CK 300 TH technical information.
Not sure which machine?Get a Personal Recommendation
Find the Right Circular Knife Sharpening Setup
Our team can assess your blade dimensions, bevel requirements and sharpening workload before recommending the appropriate machine and configuration.
What are the knife diameter, thickness and material?
Are you sharpening circular knives, bottom knives or both?
Do you require single or double bevels?
How many knives or matched sets do you sharpen?
Why choose Tuckwell
Industrial Sharpening Machinery Backed by Service & Support
Tuckwell Machinery supplies industrial sharpening, cutting and production machinery from Redland Bay, Queensland, with Australia-wide supply and technician-backed support.
Support Beyond the Sale
- Practical advice on knife type, machine selection and configuration
- Professional installation and machine setup
- Operator training for safe and accurate sharpening
- Servicing, troubleshooting and ongoing technical support
- Genuine MVM parts, grinding wheels and consumables
What to Tell Us When Enquiring
To help determine the most suitable machine, send us the knife type, maximum and minimum diameter, thickness, material, bevel angles and any required cutting-edge geometry.
If you sharpen matched sets, let us know the number of knives, required diameter or thickness consistency, sharpening frequency and production volume. Details of your existing coolant or extraction arrangements can also help with configuration advice.
Our team can discuss the CK 500, CK 300 TH and other suitable machines without assuming that one grinding platform is right for every blade.
Need Pricing or Advice on the CK 500 or CK 300 TH?
Tell us about your circular knives, bottom knives or slitter blades. We can help confirm the right machine, configuration, current pricing and availability.
Frequently asked questions
Circular Knife Sharpening Machine FAQs
Answers to common questions about the CK 500, CK 300 TH and their specialist grinding capabilities.
What types of blades can the CK 500 and CK 300 TH sharpen?
Both machines sharpen compatible circular knives without teeth, including industrial round knives and slitter blades used in converting, packaging and other cutting applications. The CK 500 also supports bottom-knife grinding. Knife material, geometry and workholding suitability should be confirmed.
What is the difference between the CK 500 and the CK 300 TH?
The CK 500 is a versatile machine for circular knives up to 550 mm, including single- and double-bevel grinding and bottom knives. The CK 300 TH accepts circular knives up to 350 mm and uses twin grinding heads to sharpen both bevels simultaneously, reducing processing time and producing a burr-free cutting edge.
Do these machines require coolant?
Both models are designed to grind with emulsion coolant or neat oil. The appropriate coolant, filtration and mist extraction arrangements should be selected for the knife material and grinding process. General woodworking dust collectors are not a substitute for a properly specified grinding mist extraction system.
Are these machines suitable for high-volume production?
Yes. Both support repeatable batch work. The CK 500 can grind batches to consistent knife diameters or bottom-knife thicknesses, while the CK 300 TH can sharpen batches to the same diameter and reduce processing time through simultaneous double-bevel grinding.
Do you provide installation and training in Australia?
Yes. Tuckwell Machinery provides machinery installation, commissioning, operator training and ongoing technician-backed support, with Australia-wide supply and service arrangements.
Can the CK 500 sharpen bottom knives to a consistent thickness?
Yes. MVM-Businaro describes the CK 500 as capable of grinding batches of bottom knives to the same thickness, as well as circular knives with unilateral or bilateral bevels. The correct setup depends on the knife dimensions and geometry.
What is the advantage of the CK 300 TH twin-head arrangement?
The two grinding heads can work on both sides of a compatible circular knife simultaneously. This reduces processing time for double-bevel knives, supports a burr-free edge finish and allows fine lateral adjustment to centre the cutting edge. The machine can also grind single-bevel knives.