Internal Grinder

Haitong’s internal grinder series delivers comprehensive solutions from NC to specialized CNC machines. The lineup includes the compact IG-150-NC model, standard IG-200 series, and advanced HT-200DE dual-spindle machine. These grinders feature rigid construction, high-precision spindle systems with speeds up to 50,000 RPM, and positioning accuracy to 0.001mm. With capabilities spanning basic internal grinding to multi-purpose machining, plus automated features and sophisticated control interfaces, these machines serve diverse applications in precision engineering and metalworking industries. Enhanced features like dual internal/external grinding wheels and automatic loading systems ensure optimal efficiency and accuracy across the complete range.

How To Choose Your Internal Grinder

When selecting an internal grinding machine, several key factors must be considered to ensure optimal performance and productivity. Here are the essential characteristics to evaluate:

■ Grinding Capacity
Consider the internal grinding range and workpiece dimensions. The IG-150-NC handles up to Ø150mm internal diameters, while the HT-200DE series accommodates Ø200mm chuck diameters. Match these specifications to your typical part sizes and grinding requirements.

■ Spindle Configuration
Evaluate spindle options based on your applications. The IG-200 features a single spindle with 10,000-50,000 RPM range, while the HT-200DE offers dual spindle configuration for both internal and external grinding. Consider your process requirements and part complexity.

■ Machine Construction
Machine weight and structural rigidity affect grinding precision. The IG-150-NC at 2,100kg suits standard applications, while the HT-200DE’s 6,000kg build supports more demanding operations. Match construction to your accuracy requirements.

■ Axis Movement Range
Consider table travel capabilities. The HT-200DE provides X/Y/Z travels of 480/310/450mm with 0.001mm minimum setting units, while simpler models offer basic axis movements. Evaluate based on your part geometry needs.

■ Power Requirements
Power specifications vary significantly. The IG-200 features 4.89kW total power, while the HT-200DE offers 12.49kW for heavier-duty applications. Match power ratings to your grinding requirements.

■ Control Features
Different models offer varying levels of automation. The HT-200DE includes automatic operation features and advanced positioning systems, while the IG-150-NC provides NC-controlled basic functions. Select based on your automation needs.

■ Additional Capabilities
Consider supplementary features like automatic wheel dressing, cooling systems, and workpiece loading options. These features significantly impact operational efficiency and part quality.

Remember that each grinding application has unique requirements. Consult with Haitong’s technical team to determine the optimal configuration for your specific needs and production goals.

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Standard & Optional Equipment for Internal Grinder

CategoryStandard ConfigurationOptional Accessories
Control System• Basic NC control panel • Emergency stop system • Manual pulse generator• CNC upgrade package • Remote monitoring system • Touch screen interface
Spindle System• Internal grinding spindle (10,000-50,000 RPM) • MT6 center taper • Standard workhead spindle (0-800 RPM)• Custom spindle options • Dual spindle system • High-frequency spindle
Coolant System• Basic coolant pump (0.09 KW) • Standard filtration • 70L coolant tank• High-pressure coolant system • Magnetic separator • Paper filter system
Lubrication• Automatic lubrication system • Basic oil level indicator • Standard oil tank• Central lubrication system • Oil cooling unit • Oil mist collector
Work Holding• Basic workpiece support • Centers set • Standard 3-jaw chuck• Hydraulic chuck • Quick-change chuck system • Special fixture solutions
Dressing Unit• Basic single-point dresser • Manual dressing system• Automatic dressing system • Multi-point dresser • Profile dressing unit
Safety Features• Machine enclosure • Safety interlocks • Safety light curtain• Advanced safety package • Mist extraction system • Sound dampening system
Measuring System• Basic dial indicators • Standard measuring tools• Acoustic emission system • In-process measuring system • Post-process gauging
Accessories• Basic tool kit • Machine lamp • Operation manual• Automatic loading system • Customized tooling package • Extended warranty
Software• Basic grinding cycles • Standard operation interface• Advanced grinding software • Custom macro package • Industry 4.0 interface

Note: Actual configurations may vary by model. Contact Haitong’s sales team for detailed specifications and customization options.

Grinding Machine Samples

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Why Haitong Grinding Machine

Bed Castings

Bed Castings
Natural aging treatment ensures high strength, wear and heat resistance, and good shock absorption. The reinforced internal structure prevents long-term deformation.

Guide Rail Precision Scraping

Guide Rail Precision Scraping
Our equipment’s guide rails are manually scraped and polished to enhance stiffness, lubrication, and flatness.

Inspection System

Inspection System
Each device is inspected with a laser interferometer and ballbar before leaving the factory, ensuring no quality issues.

Regular Follow-ups and Training
Our company offers a comprehensive service system, conducting regular customer visits and providing timely support for any questions.

Mechanical Processing Equipment

Haitong has been in the machine tool manufacturing industry since 2004. Our company offers high quality, reliable press brakes, laser cutting machines and CNC lathes as well as machining equipment: multi-tasking machining centers, grinders and lathe equipment.

Mechanical Processing Equipment
FAQ

Frequently Asked Questions

Important factors include:

  • Bore diameter range capacity
  • Maximum grinding depth
  • Spindle speed options (typically 10,000-120,000 RPM)
  • Workpiece size and weight capacity
  • Required accuracy and surface finish
  • Automation requirements

Key challenges include:

  • Limited visibility of grinding process
  • Heat generation in deep bores
  • Wheel wear monitoring
  • Achieving roundness in long bores
    Solutions involve proper coolant delivery, high-speed spindles, and in-process gauging systems.

Critical maintenance includes:

  • Daily spindle and bearing checks
  • Regular wheel dressing and balancing
  • Coolant system cleaning
  • Alignment verification
  • Periodic calibration of measuring systems

Common applications include:

  • Precision bearing races
  • Hydraulic cylinders
  • Gun barrels
  • Gear internal diameters
  • Tool holders and bushings
  • Automotive engine components

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