Used grinding machines - cylindrical centerless grinders

CNC	Yes

Type of CNC	Siemens 840 D

Max. length of workpiece	200 mm
Centre height	100 mm
Type of CNC
Grinding wheel width	150 mm
Grinding wheel speed	300 rpm

Max. weight between centers	100 kg
CNC	No
Grinding wheel diameter	205 mm
Grinding wheel bore	90 mm

Max. length of workpiece	250 mm
Type of CNC	Fanuc 21imb
Grinding wheel width	250 mm
Grinding wheel speed	265 rpm

CNC	Yes
Grinding wheel diameter	400 mm
Grinding wheel bore	203.2 mm

Max. length of workpiece	400 mm
Centre height	175 mm
Type of CNC	FANUC 16i-T
Grinding wheel width	mm
Grinding wheel speed	3200 rpm

Max. weight between centers	80 kg
CNC	Yes
Grinding wheel diameter	mm
Grinding wheel bore	mm

Max. length of workpiece	mm
Centre height	mm
Type of CNC
Grinding wheel width	mm
Grinding wheel speed	rpm

Max. weight between centers	kg
CNC	Yes
Grinding wheel diameter	250 mm
Grinding wheel bore	mm

Max. length of workpiece	1500 mm
Centre height	175 mm
Type of CNC	GE FANUC Series 18i-T
Grinding wheel width	80 mm
Grinding wheel speed	1000 rpm

Max. weight between centers	150 kg
CNC	Yes
Grinding wheel diameter	500 mm
Grinding wheel bore	203.2 mm

Max. length of workpiece	2200 mm
CNC	Yes
Grinding wheel diameter	660 mm
Grinding wheel bore	305 mm

Centre height	480 mm
Type of CNC
Grinding wheel width	100 mm
Grinding wheel speed	1500 rpm

CNC	Yes
Grinding wheel width	250 mm

Type of CNC	Siemens

CNC	Yes

Type of CNC	Fanuc

Max. length of workpiece	500 mm
Type of CNC
Grinding wheel width	25 mm
Grinding wheel speed	2200 rpm

Max. weight between centers	80 kg
Grinding wheel diameter	305 mm
Grinding wheel bore	76.2 mm

Max. length of workpiece	1000 mm
Centre height	225 mm
Type of CNC	KELCO 90
Grinding wheel width	80 mm
Grinding wheel speed	1720 rpm

Max. weight between centers	200 kg
CNC	Yes
Grinding wheel diameter	500 mm
Grinding wheel bore	203 mm

Type of CNC

Max. length of workpiece	600 mm
Type of CNC

Centre height	1500 mm
Grinding wheel diameter	300 mm

Max. length of workpiece	1600 mm
CNC	No
Grinding wheel diameter	914 mm
Grinding wheel bore	101.6 mm

Centre height	787 mm
Type of CNC
Grinding wheel width	304.5 mm
Grinding wheel speed	1800 rpm

Max. length of workpiece	500 mm
Centre height	110 mm
Type of CNC
Grinding wheel bore	25 mm

Max. weight between centers	60 kg
CNC	No
Grinding wheel diameter	200 mm

Max. length of workpiece	6000 mm
CNC	Yes
Grinding wheel diameter	900 mm

Centre height	450 mm
Type of CNC	Lismar
Grinding wheel speed	1800 rpm

Max. length of workpiece	4267 mm
CNC	Yes
Grinding wheel diameter	914 mm
Grinding wheel speed	1200 rpm

Centre height	647 mm
Type of CNC	NUM 760
Grinding wheel bore	152 mm

Max. length of workpiece	500 mm
CNC	No
Grinding wheel diameter	350 mm
Grinding wheel bore	127 mm

Centre height	100 mm
Type of CNC
Grinding wheel width	50 mm

CNC	Yes
Grinding wheel diameter	300 mm

Type of CNC	Fanuc

Max. weight between centers	250 kg
CNC	Yes
Grinding wheel diameter	500 mm
Grinding wheel speed	4500 rpm

Centre height	275 mm
Type of CNC	GE FANUC Series 31i-Model A
Grinding wheel width	100 mm

Introduction to Cylindrical Centerless Grinding Machines

Cylindrical centerless grinding machines are essential tools in the metalworking industry, designed for the precision grinding of cylindrical components without the need for centers to hold the workpiece. This grinding method is highly efficient for producing parts with high accuracy and surface finish, making it indispensable in industries such as automotive, aerospace, medical device manufacturing, and general engineering.

Types of Cylindrical Centerless Grinding Machines

Cylindrical centerless grinding machines come in various configurations, each suited to specific grinding needs and production requirements:

Infeed (Plunge) Grinding: This method involves feeding the workpiece into the grinding wheel to grind specific sections without axial movement. It is ideal for parts with complex shapes and varying diameters.
Throughfeed Grinding: In this method, the workpiece is fed continuously through the grinding wheels, making it suitable for grinding long, cylindrical parts with consistent diameters.
Endfeed Grinding: Combines elements of both infeed and throughfeed grinding. The workpiece is axially fed into the grinding wheels, making it ideal for parts with tapered sections.

Key Features and Specifications

When selecting a cylindrical centerless grinding machine, several key features and specifications should be considered to ensure it meets production needs:

Grinding Capacity: The maximum diameter and length of the workpieces that the machine can handle. This is crucial for ensuring the machine can accommodate the desired part sizes.
Wheel Size and Speed: The size and speed of the grinding wheel affect the grinding process's efficiency and quality. Larger wheels are suitable for high-volume production, while variable speed control allows for flexibility in grinding different materials.
Automation Level: Depending on production volume, the level of automation (manual, semi-automatic, or fully automatic) impacts efficiency and throughput.
Precision and Accuracy: The machine's ability to maintain tight tolerances and achieve high surface finishes, which is essential for high-quality parts.
Coolant System: Effective cooling systems are necessary to dissipate heat generated during grinding, preventing thermal damage to the workpiece and grinding wheels.
Ease of Setup and Operation: User-friendly controls and features that facilitate quick setup and adjustments can enhance productivity and reduce downtime.

Advantages of Using Cylindrical Centerless Grinding Machines

Investing in high-quality cylindrical centerless grinding machines offers numerous benefits:

High Precision and Accuracy: Ensures parts meet exact specifications, which is critical for high-performance applications.
Increased Efficiency: Automated and high-speed grinding processes reduce production times and labor costs.
Versatility: Capable of handling various part sizes and shapes, catering to diverse manufacturing needs.
Improved Surface Finish: Achieves superior surface finishes, reducing the need for additional finishing processes.
Reduced Workpiece Handling: The absence of centers and chucks simplifies loading and unloading, enhancing productivity.

Considerations When Buying a Cylindrical Centerless Grinding Machine

To select the right cylindrical centerless grinding machine for your needs, consider the following factors:

Production Volume: Determine the volume of parts to be produced to choose a machine with suitable capacity and speed.
Part Specifications: Ensure the machine can handle the specific diameters, lengths, and shapes of the parts you need to grind.
Precision Requirements: Match the machine’s precision capabilities with your quality standards.
Budget: Balance the initial investment with long-term operational costs, including maintenance and consumables.
Service and Support: Evaluate the availability of technical support and maintenance services for the machine.
Training: Assess the need for operator training to effectively use the machine’s advanced features.

Popular Brands and Pricing

Several reputable brands manufacture cylindrical centerless grinding machines known for their reliability and performance. Here are a few notable ones:

Studer: Known for high-precision grinding machines, Studer offers a range of models suitable for various applications. Prices typically range from $100,000 to over $500,000, depending on the model and specifications.
Cincinnati: A leading manufacturer of centerless grinding machines, Cincinnati provides robust and efficient solutions. Pricing generally ranges from $80,000 to $450,000.
Danobat: Specializes in advanced grinding technology, offering machines with high automation and precision. Prices typically range from $120,000 to over $600,000.
TGS (Total Grinding Solutions): Provides a variety of centerless grinding machines with a focus on high performance and affordability. Pricing generally falls between $90,000 and $400,000.
Junker: Known for their innovative grinding solutions, Junker machines are used in various high-precision industries. Prices typically range from $150,000 to over $700,000.

Conclusion

Cylindrical centerless grinding machines are essential tools in the metalworking industry for producing high-precision cylindrical parts. With different types such as infeed, throughfeed, and endfeed grinding, selecting the right machine depends on specific production needs and part specifications. Key factors to consider include grinding capacity, wheel size and speed, automation level, precision, coolant system, and ease of operation. Leading brands like Studer, Cincinnati, Danobat, TGS, and Junker offer a range of high-quality cylindrical centerless grinding machines to suit different applications and budgets. By carefully evaluating production volume, part specifications, precision requirements, and budget, businesses can invest in the right cylindrical centerless grinding machine to enhance their manufacturing capabilities and ensure consistent, high-quality part production.

Used grinding machines - cylindrical centerless grinders 181

Used Junker Jumat 5340/S Cylindrical centreless grinding machine

PARAGON MACHINERY CO., LTD RC 18/B Cylindrical centreless grinding machine

TSCHUDIN ecoLine 400 Cylindrical centreless grinding machine

STUDER S32 Cylindrical centreless grinding machine

Schaudt ZX 11 Cylindrical centreless grinding machine

Kellenberger KEL-VARIA R175 x 1500 Cylindrical centreless grinding machine

AZ RU 2000 Cylindrical centreless grinding machine

Tschudin Ecoline 400 centerless grinding machine

Tschudin EcoLine 400 Centerless grinding machine with Staubli robots

Supertec G20P-45CII Cylindrical centreless grinding machine

Kellenberger UR-H 305 x 1000 Cylindrical centreless grinding machine

Cylindrical Grinding Machine TOS BU 28/630 CNC

Cetos cylindrical grinding machine(Overhauled in 2021)

CINCINNATI 60 x 216 Cylindrical centreless grinding machine

Okamoto OGM 250 UDX Cylindrical centreless grinding machine

WALDRICH SIEGEN WS-2A x 6000 Cylindrical centreless grinding machine

Farrel 50 x 14 CNC Cylindrical external / internal grinding machine

Studer RHU 500 Cylindrical grinding machine

Palmary Extomax OCD-3260 CNC Cylindrical Grinding Machine

STUDER S41 Cylindrical centreless grinding machine