High Precision CNC Centerless Grinder - 0.001mm Accuracy for Graphite & Metal Grinding

Achieve micron-level precision with the HC-18CNC-1 high precision CNC centerless grinder. Engineered for complex cylindrical grinding applications, this advanced machine delivers exceptional accuracy, surface finish, and process consistency even for challenging workpieces with extreme length-to-diameter ratios.


                       


Key Performance Metrics:

• Positioning Accuracy: ±0.001 mm
• Roundness Tolerance: ≤0.001 mm
• Surface Finish: Ra ≤0.2 μm
• Length-to-Diameter Ratio: 41:1 capability
• Dimensional Accuracy: ±0.001 mm

Scope of Supply - Complete CNC Grinding Solution

                              
 

Main Machine - HC-18CNC-1 High Precision CNC Centerless Grinder

Machine Core Features:
✅ Delta CNC Control System with single-axis CNC feed on lower slide rail
✅ High-precision hydrodynamic bearing spindle structure for grinding and regulating wheels
✅ Servo-driven regulating wheel with superior rotational accuracy and stepless digital variable speed control
✅ Dual V hard guide rails with hand-scraped sliding surfaces for long-term precision retention
✅ Fully integrated system ready for immediate production deployment

Standard Machine Configuration (1 Set)

 

Component	Brand/Manufacturer	Specifications
Grinding Wheel & Wheel Flange	Taiwan Jabo or Norton	Precision grinding wheel for high accuracy applications
Regulating Wheel & Wheel Flange	Taiwan Jabo or Norton	Stepless speed control for optimal workpiece handling
Stop Blade Holder & Blade	Fuxincheng	Precision positioning and workpiece support
Through-feed Blade Holder & Blade	Fuxincheng	Optimized for continuous through-feed grinding
Diamond Dressing Tool	Binzuan	1 piece each for grinding wheel & regulating wheel
Work Lamp	Langsheng	Industrial-grade illumination system
Hydraulic Power Station	BKD	Oil pump, motor & temperature-controlled radiator
Water Tank & Water Pump	Shengxiang	Efficient coolant delivery system
Flange Puller Kit	Fuxincheng	Professional wheel maintenance toolset
Machine Leveling Screws & Pads	Fuxincheng	Precision machine alignment components
Electrical Control Cabinet	Fuji (Japan)	Industrial-grade control system enclosure
Tool Cabinet & Maintenance Tools	Fuxincheng	Comprehensive maintenance and support kit

Note: If filtration system is purchased as an option, standard water tank will not be supplied.

Optional Special Accessories for Enhanced Capabilities

 

Accessory	Description	Benefit
Single-axis Servo Feeding Tray	Automated workpiece loading system	Increased throughput and consistent loading
Single-axis Servo Receiving Tray	Automated workpiece unloading system	Reduces manual handling and contamination risks
Gantry 3-in-1 Dual Servo Left-Right Dual Cylinder Clamping Device	Advanced workpiece positioning system	Precise workpiece alignment for complex geometries
Magnetic Filter	Efficient coolant filtration system	Maintains coolant quality and extends tool life

 

Advanced Machine Features for Maximum Performance

Basic Machine Parameters

 

Parameter	Specification
Machining Diameter Range	Standard: Ø0.5 ~ 60 mm / Optional Extended: Ø40 ~ 80 mm
Control System	Delta CNC system with conversational operation interface
CNC Control Axis	1 Axis (Y-axis lower slide feed)
CNC Axis Feed Accuracy	Minimum setting unit: 0.0001 mm / Feed positioning accuracy: 0.001 mm
Lower Slide Rail Type	Hard Guide Rail with hand-scraped surfaces
Grinding Wheel Spindle	Ø455 × 205 × Ø228.6 mm / 15 HP Motor / 1520 RPM / Hydrodynamic Spindle

Main Machine Component Characteristics

Machine Base & Core Components - Precision Casting and Machining

Foundry Excellence:

• High-grade FC-30 cast iron for optimal vibration damping
• Artificial annealing and natural aging treatment for dimensional stability
• Single-setup machining on world-class machine tools (YASDA, MITSUI SEIKI, TOSHIBA, OKUMA, OKAMOTO)
• Micron-level precision machining for critical mating surfaces
• Rigid construction to maintain accuracy under heavy machining loads

Benefits:

• Exceptional vibration damping for superior surface finish
• Long-term dimensional stability minimizing thermal drift
• Consistent accuracy across entire working volume
• Reduced machine maintenance requirements
• Extended machine service life

Regulating Wheel Drive System - Servo Technology for Superior Accuracy

Advanced Drive System:

• Servo motor drive with speed range of 10 to 250 RPM
• Stepless digital variable speed control for optimal grinding parameters
• Direct-mount motor design for minimal backlash and maximum torque transfer
• Synchronous belt drive maintaining pulley alignment during angle adjustment
• Constant linear speed maintenance despite wheel wear

Performance Advantages:

• ±0.001 mm rotational accuracy for consistent workpiece quality
• Eliminates defects caused by chain drive angular deviation
• Reduces maintenance costs by eliminating chain and tension spring replacements
• Maintains surface finish consistency throughout wheel life
• Flexible speed adjustment for diverse material requirements

Spindle Circulating Oil System - Hydrodynamic Bearing Technology

Precision Spindle Design:

• Shared hydraulic system for spindle lubrication and hydraulic dressing
• External oil tank design for easy maintenance and temperature control
• Dual filtration units with pressure controllers for oil cleanliness
• Automatic lubrication system extending spindle service life
• Hydrodynamic bearings for ultra-precise rotational accuracy

Spindle Benefits:

• Vibration-free operation for exceptional surface finish
• High load capacity for heavy grinding applications
• Consistent performance across extended machining periods
• Reduced spindle maintenance requirements
• Extended spindle service life beyond 10,000 hours

Dressing Unit - Precision Engineering for Accuracy Retention

Advanced Dressing System:

• Special alloy cast iron dressing base with multi-stage tempering
• Vibration relief treatment for stable performance
• Dovetail structure with widened rail surfaces for rigidity
• One-piece forming grinding and precision hand scraping
• Hydraulic reciprocating dressing or servo motor forming dressing options

Dressing Advantages:

• ±0.001 mm accuracy retention after dressing
• Consistent wheel profile maintenance
• Extended wheel service life through optimal dressing
• Reduced dressing cycle times improving overall productivity
• Capability for complex profile grinding applications

Sliding Mechanism - Rigid Guideway System for Precision Movement

High-Precision Slide System:

• Upper slide: Dovetail slot structure with ±5° swivel function
• Lower slide: Dual V guide rails with dual wedge auxiliary rails
• Hand-scraped contact surfaces for optimal load distribution
• Manual and automatic fine feed capability
• ±0.001 mm positioning accuracy across entire travel

Guideway Benefits:

• Maximum rigidity preventing deflection under load
• Effective coolant intrusion prevention system
• Simplified maintenance procedures
• Long guideway service life with minimal wear
• Consistent precision even after extended machine service

CNC Control System & Software - Conversational Operation Interface

Intelligent Control Technology:

• Delta CNC control system with conversational programming interface
• Custom-developed Centerless Grinder Grinding Software V2.0
• Numerical control of upper and lower slide automatic feed
• Automatic dressing and compensation for grinding wheels
• Simplified parameter input for rapid setup and changeover

Software Features:

• Conversational Interface: Intuitive graphical user interface requiring minimal training
• Automatic Functions: Auto-dressing, compensation, and process optimization
• Process Monitoring: Real-time performance and quality monitoring
• Data Logging: Complete process documentation for quality control
• Error Diagnosis: Comprehensive diagnostic and troubleshooting capabilities

 

Technical Specifications for Core Machine Components

Premium Component Selection:

Component	Origin	Brand
CNC Control System	Taiwan	Delta
Regulating Wheel Servo Motor & Driver	Taiwan	Delta
Spindle Assembly	Taiwan	Jianchang
Ball Screw	Japan	THK
Precision Bearings	Japan	NSK
Grinding Wheel Spindle Motor	China	Wannan
Regulating Wheel Reducer	Taiwan	Gongji
Switches & Buttons	Japan	Fuji
Transmission Belt	Japan/Germany	555 / German Brand
Hydraulic Components	China	Shengxiang / BKD

Note: We reserve the right to substitute equivalent-grade components if listed brands face supply shortages.

Machine Precision & Acceptance Standards

Manufacturing Precision - Exceeding National Standards

Quality Control Processes:

• In-house precision inspection exceeding China GB standards
• Comprehensive pre-delivery testing and validation
• Certificate of conformity provided with each machine

Standard Precision Specifications

Test Methods: Stop-feed Grinding & Through-feed Grinding
Test Specimen: Standard Ø15 Test Bar within grinding wheel width
Machine Precision Standard for HC-18CNC-1:

Inspection Item	Tolerance Standard	Measuring Instrument
Roundness	≤0.001 mm	Roundness Tester
Straightness	≤0.002 mm	Lever Micrometer
Surface Roughness	Ra ≤0.2 μm	Roughness Tester
Dimensional Accuracy	±0.001 mm	Laser Outer Diameter Gauge

 

Comprehensive Machine Technical Documentation

Documentation Package (1 Set Each)

 

Document	Description
Centerless Grinder Operation Manual	Comprehensive operating instructions and machine overview
Centerless Grinder Maintenance Card	Scheduled maintenance procedures and service intervals
Centerless Grinder Electrical Circuit Diagram	Complete electrical schematics and component diagrams
Machine Delivery Checklist	Verification of all included components and accessories
Toolbox & Accessory List	Detailed inventory of tools and replacement parts
Machine Handover Training Document	Structured training program for operators and maintenance staff
Machine Handover Report	Acceptance documentation and commissioning records
Machine Inspection Report	Precision measurement results and performance validation

 

Typical Application - Graphite Component Grinding

Workpiece Specifications

Material: Graphite (dry machining required)
Dimensions:

• Length: 30.85 inches (783.59 mm)
• Raw OD before grinding: 0.85 ±0.005 inches (21.59 ±0.127 mm)
• Finished OD after grinding: 0.75 ±0.002 inches (19.05 ±0.05 mm)
• Length-to-Diameter Ratio: 41:1
• Overall Runout Requirement: 0.008 inches

Machining Requirements

✅ Inch-based programming and operation
✅ Complete dry machining (no coolant permitted)
✅ Precision through-feed grinding process
✅ Dimensional tolerance: ±0.002 inches
✅ Process consistency: 100% compliance across production runs

Machining Process - Through-feed Grinding

Process Capabilities:

• Machining Allowance: 0.10 inches (2.54 mm) material removal
• Dimensional Accuracy: ±0.001 mm achievement rate
• Surface Finish Consistency: Ra ≤0.2 μm across entire workpiece length
• Process Stability: 100% pass rate for critical dimensions

Production Results

Key Metrics After Implementation:

• Process Capability Index (Cp/Cpk): >2.0 for all critical dimensions
• Scrap Rate: <0.1% for complex graphite components
• Cycle Time Reduction: 40% faster than conventional grinding methods
• Operator Training Time: 8-hour proficiency target for new operators
• Maintenance Cost Reduction: 35% lower than competitive machine models

 

Implementation & Operational Best Practices

Installation and Setup Guide

Step 1: Machine Preparation

• Site preparation with proper foundation (consult machine layout drawings)
• Environmental control recommendations (temperature, humidity, vibration)
• Utility connection requirements (electrical, hydraulic, coolant systems)

Step 2: Installation and Alignment

• Precision leveling and alignment procedures
• Machine calibration using laser interferometry
• Spindle runout testing and verification

Step 3: Initial Commissioning

• Safety system validation and emergency function testing
• Control system verification and parameter setup
• Process optimization with test workpieces

Step 4: Production Validation

• First-article inspection and approval
• Process stability monitoring and SPC implementation
• Operator training and knowledge transfer

Operational Best Practices

Process Optimization:

• Wheel Selection: Choose appropriate grinding wheel specifications based on material and finish requirements
• Parameter Optimization: Fine-tune grinding parameters for specific material characteristics
• Coolant Management: Maintain coolant quality through proper filtration and temperature control (when used)
• Dressing Strategy: Implement optimal dressing intervals for maximum wheel life and precision retention

Maintenance Schedule:

• Daily: Visual inspection, lubrication checks, coolant level verification
• Weekly: Filter replacement, spindle oil level check, guide rail cleaning
• Monthly: Ball screw lubrication, hydraulic system inspection, electrical connections check
• Quarterly: Precision measurement verification, bearing condition monitoring, axis backlash adjustment
• Annually: Comprehensive machine calibration, system performance evaluation, preventive maintenance overhaul

 

Technical Advantages Over Conventional Grinding Systems

Performance Comparison

 

Performance Metric	HC-18CNC-1 CNC Centerless Grinder	Conventional Grinder	Improvement
Positioning Accuracy	±0.001 mm	±0.005 mm	400% better
Roundness Tolerance	≤0.001 mm	≤0.003 mm	200% improvement
Surface Finish	Ra ≤0.2 μm	Ra ≤0.8 μm	300% smoother
Changeover Time	15-30 minutes	60-90 minutes	75% reduction
Maintenance Frequency	500-hour intervals	200-hour intervals	150% longer intervals
Wheel Life	80-120 hours	30-50 hours	160% longer life
Operator Skill Level	Basic technical training	Advanced grinding expertise	60% training reduction

Process Capability Advantages

1. Extreme Length-to-Diameter Ratio Handling

• 41:1 ratio capability for challenging workpiece geometries
• Minimal workpiece deflection during grinding process
• Consistent diameter control across entire workpiece length

2. Dry Machining Capability

• Specialized design for coolant-free grinding applications
• No risk of workpiece contamination from coolant residues
• Ideal for materials sensitive to moisture or chemical reactions

3. Process Automation Potential

• Interface ready for automatic loading/unloading systems
• Compatibility with in-process measurement and inspection systems
• Potential for lights-out manufacturing implementation

4. Data-Driven Manufacturing

• Comprehensive process data logging capabilities
• Integration readiness for Industry 4.0 and smart factory initiatives
• Real-time monitoring and process optimization features

 

Application Areas Beyond Graphite Grinding

The HC-18CNC-1 high precision CNC centerless grinder excels in diverse industrial applications requiring ultra-precise cylindrical grinding:

Advanced Materials Processing

 

• High-purity graphite components for semiconductor manufacturing
• Ceramic and advanced ceramic matrix composites
• Titanium and other high-strength aerospace alloys
• Medical implant components requiring exceptional surface finish

Automotive and Aerospace Manufacturing

 

• Critical engine components (valves, pins, shafts)
• Transmission components requiring precise dimensional control
• Aerospace structural components with tight tolerance requirements
• Fuel system components demanding leak-free assembly

Tool and Die Manufacturing

 

• Precision guide pins and bushings for moldmaking
• Ejector pins requiring strict dimensional consistency
• High-precision die components for stamping operations
• Specialty tool components for precision machining applications

General Precision Manufacturing

 

• Electronic connector pins and terminals
• Hydraulic and pneumatic components
• Textile machinery parts requiring low friction surfaces
• Printing press rollers needing uniform surface topography

 

Total Cost of Ownership Analysis

Initial Investment vs. Long-Term Savings:

Cost Factor	HC-18CNC-1 CNC Grinder	Conventional Grinder	Cost Benefit
Initial Purchase Price	100%	70%	Higher initial investment
Annual Maintenance Cost	$8,500	$13,000	35% cost reduction
Annual Tooling Cost	$12,000	$21,000	43% cost reduction
Labor Cost per Year	$45,000	$62,000	27% cost reduction
Scrap Cost per Year	$2,800	$11,200	75% waste reduction
Total Annual Operating Cost	$68,300	$107,200	36% cost savings
Payback Period	24 months	N/A	Positive ROI after 2 years

Intangible Benefits:

• Reduced operator training requirements and skill dependency
• Improved product quality consistency and customer satisfaction
• Enhanced production flexibility and faster new product introduction
• Lower environmental impact through reduced waste and energy consumption

 

Getting Started with the HC-18CNC-1 CNC Centerless Grinder

Consultation and Ordering Process

Step 1: Application Analysis

• Material specifications and machining requirements review
• Workpiece geometry and tolerance analysis
• Production volume and throughput requirements
• Existing process assessment and improvement opportunities

Step 2: Custom Solution Development

• Machine configuration recommendations based on application needs
• Optional accessory selection for enhanced capabilities
• Turnkey solution design including fixturing and tooling
• Delivery schedule and project timeline development

Step 3: Technical Proposal and Quotation

• Detailed quotation including all components and services
• Technical specification documentation
• Terms and conditions of sale and delivery
• Warranty and service agreement details

Step 4: Installation and Commissioning

• Professional machine installation and precision alignment
• Comprehensive training program for operators and maintenance staff
• Process optimization and production validation
• Final acceptance testing and documentation

Conclusion

The Future of Precision Cylindrical Grinding

The HC-18CNC-1 high precision CNC centerless grinder sets new standards in cylindrical grinding technology, delivering exceptional accuracy, surface finish, and process consistency for even the most challenging workpiece geometries.
Core Value Proposition:

• Unmatched Precision: ±0.001 mm dimensional accuracy capability
• Process Consistency: 100% compliance with strict quality requirements
• Operational Efficiency: 40% faster cycle times with reduced operator intervention
• Cost Effectiveness: 36% lower total annual operating costs compared to conventional methods
• Future-Ready Technology: Smart manufacturing integration and Industry 4.0 readiness

For manufacturers requiring ultra-precise cylindrical grinding capabilities, the HC-18CNC-1 represents the ultimate solution combining advanced CNC technology, precision engineering, and comprehensive application expertise.