Cylindrical and Internal Grinding Machine Ø320x1000 mm – Precision in cylindrical machining

The Cylindrical and Internal Grinding Machine Ø320x1000 mm is a high-precision industrial machine designed for the external and internal grinding of cylindrical surfaces. Its robust construction and advanced technology ensure high machining accuracy and reliability under demanding production conditions.

Main advantages of the Cylindrical and Internal Grinding Machine Ø320x1000 mm

The Cylindrical and Internal Grinding Machine Ø320x1000 mm is a versatile solution for industrial plants requiring precise machining of cylindrical components with diameters up to 320 mm and lengths up to 1000 mm (with optional versions up to 1500, 2000 or 3000 mm). Designed for professionals, it combines advanced technologies — such as stepless spindle speed control (25–220 rpm) and a hydraulic table feed system — with a heavy-duty frame weighing 5.3 tonnes (for the 1000 mm version), ensuring reliability and performance. The machine enables both external and internal grinding of workpieces with diameters from 30 to 100 mm, making it an ideal choice for a wide range of applications. Extensive standard equipment, including an internal grinding head and a 3-jaw chuck, together with fine feed accuracy (0.0025 mm), guarantee outstanding surface finish. Key advantages include:

• High machining precision: A minimum feed of 0.0025 mm and precise cross-feed adjustments (coarse 0.01 mm, fine 0.0025 mm) ensure exceptional surface quality.
• Versatility of use: Capable of grinding shafts up to Ø320 mm and internal bores from 30 to 100 mm, with a maximum external grinding length of 1000 mm (or more, depending on version).
• Stability and durability: The massive 5.3-tonne frame (for 1000 mm version) minimises vibration, ensuring consistent precision during intensive operation.
• Efficient hydraulic system: The table’s hydraulic feed with a speed range of 0.1–4 m/min allows smooth and precise motion, increasing machining efficiency.
• Flexible configuration: Rich standard and optional accessories — such as steady rests or a diamond dresser — enable adaptation to specific production needs.
• Ready to work: Fully equipped for immediate production start-up, reducing downtime and maximising productivity.

Construction and technology

Rigid frame and precision components

The Cylindrical and Internal Grinding Machine Ø320x1000 mm features a heavy-duty frame weighing 5.3 tonnes (for the 1000 mm version) and overall dimensions of 3220x2000x2050 mm, providing superior stability during operation. Equipped with precision guideways and a spindle driven by a 5.5 kW motor, it uses a 400x50x203 mm grinding wheel for efficient external grinding. The internal grinding head, powered by a 1.1 kW motor with speeds of 10,000/15,000 rpm, ensures precise finishing of internal bores.

Advanced feed system

The machine offers a maximum cross-feed of 246 mm and manual feeds of 2 mm/rev (coarse) and 0.5 mm/rev (fine). A minimum feed of 0.0025 mm and wheel wear compensation of 0.0025 mm guarantee top-level accuracy. The hydraulic table feed system with a range of 0.1–4 m/min ensures smooth and controlled movements — essential for precision applications.

Cooling system and workholding

The cylindrical grinder features an efficient cooling system that protects both the workpiece and the grinding wheel from overheating. The 3-jaw chuck and rotating headstock with MK4 taper provide secure clamping of components, increasing both safety and machining precision. The +90° head swivel and table rotation (3° right, 7° left for the 1000 mm version) allow flexible adjustment for various tasks.

Precision and productivity

The Cylindrical and Internal Grinding Machine Ø320x1000 mm guarantees an excellent surface finish through precise feed control and stable construction. The maximum external grinding length is 1000 mm (extendable up to 3000 mm depending on version), and internal 125 mm. The grinding wheel’s surface speed (35 m/s) and stepless spindle speed control (25–220 rpm) allow adaptation to specific requirements, ensuring mirror-smooth surfaces and tight tolerances.

Applications

The Cylindrical and Internal Grinding Machine Ø320x1000 mm is ideal for industrial facilities that demand high-precision cylindrical machining. Typical applications include:

• Machinery industry: Grinding of shafts, sleeves, and cylindrical parts up to 1000 mm or longer.
• Toolmaking industry: Production and reconditioning of precision cutting tools and injection moulds.
• Repair workshops: Refurbishing of components such as drive shafts and hydraulic elements.
• Automotive industry: Machining of shafts and bores in engine and transmission components.

Technical specifications

Technical data

Headstock

Grinding wheel

Internal grinding

Table

Tailstock

Motors

Machine

Standard equipment

• Coolant tank
• Dresser
• Grinding wheel
• Balancing arbor
• Centres (4 pcs)
• Stopper
• Wheel removal tools
• Sealing ring
• Balancing fixture
• CE declaration
• Internal grinding head
• 3-jaw chuck
• Internal grinding nozzle

Optional equipment

• Open steady rest: Enables stable grinding of longer shafts.
• Closed steady rest: Improves precision for smaller diameters.
• 4-jaw chuck: For clamping irregularly shaped parts.
• Flanged grinding wheel: For specialised grinding operations.
• Diamond dresser: Increases accuracy and grinding wheel life.

Order your cylindrical grinder today

Increase your production efficiency with the Cylindrical and Internal Grinding Machine Ø320x1000 mm. Contact us for a detailed quotation or to schedule a demonstration. Choose precision and reliability — choose CORMAK cylindrical grinders!