Double Head Spherical Ball Grinding Machine

The Double Head Spherical Ball Grinding Machine DN50-300 is a dedicated multi-head precision grinding machine for spherical sealing surfaces of ball valves, designed for batch finishing, repair and precision lapping of ball valve core spherical sealing surfaces to achieve ultra-smooth sealing finish and improve valve sealing performance and service life.

1.Four independent spindle grinding system: Multiple vertical servo spindles work simultaneously for parallel multi-station lapping, greatly improving batch processing efficiency, suitable for continuous mass production of ball valve factories. Each spindle has independent speed and stroke adjustment for different ball valve specifications.

2.Variable speed servo drive control: Variable frequency servomotor control, adjustable rotational speed and feed speed, adaptive fine lapping of different abrasive materials (abrasive paste, grinding discs), to achieve micron-level super surface finish of ball valve spherical sealing surfaces.

3.Precision three-jaw chuck clamping structure: High-precision lathe chuck firmly clamps valve bodies, ensuring concentricity during spherical surface lapping, reducing runout error and ensuring consistent spherical accuracy across batches of ball valves.

4.Integrated coolant circulation system: Built-in cooling and flushing system, continuous coolant lubrication during lapping to reduce thermal deformation, remove grinding debris, protect the spherical surface and improve lapping precision and surface finish quality.

This multi-spindle automatic ball valve lapping machine adopts heavy rigid welded bed structure, suitable for carbon steel, stainless steel, alloy ball valve core processing. It can be customized for different spindle numbers, valve size ranges and CNC control modes.

Product Core Highlights

Double Head Spherical Ball Grinding Machine DN50-300 features Multi-spindle parallel processing: Multi-head simultaneous lapping drastically increases daily throughput, ideal for high-volume ball valve mass production workshops.

Variable speed servo fine lapping: Precise speed control for rough grinding, semi-finish grinding and mirror finish fine lapping, to achieve high sphericity and ultra-smooth sealing surface.

High-precision concentric clamping: Three-jaw precision chuck ensures stable valve fixing, reduces runout error and improves the consistency of spherical surface precision.

Coolant circulation lubrication system: Continuous cooling flushing reduces thermal deformation, improves surface finish, extends abrasive tool life and ensures consistent lapping quality.

Heavy rigid frame: Thick welded machine bed reduces vibration during high-speed fine lapping, maintaining long-term spherical machining accuracy and stability.

Core Technical Advantages

The Double Head Spherical Ball Grinding Machine DN50-300 adopts Multi-station Parallel Spindle Processing Technology: Independent servo-driven spindles work simultaneously, realizing multi-workpiece parallel lapping, greatly boosting daily production capacity, reducing single-piece processing cycle time, and adapting to modern automated ball valve production lines.

Variable Frequency Servo Precision Speed Regulation Technology: Independent variable frequency servo drive for each spindle, adjustable rotation speed and feed rate, can complete rough grinding, semi-finish grinding and mirror fine lapping processes, to achieve ultra-precise spherical surface geometry and mirror finish required for zero-leakage ball valves.

High Precision Three-jaw Chuck Positioning & Clamping Technology: Precision three-jaw lathe chuck with radial positioning function, ensuring high concentricity during lapping, minimizing runout errors, guaranteeing uniform sphericity for each batch of ball valve cores and stable long-term sealing performance.

Closed-loop Coolant Circulation & Debris Removal Technology: Built-in circulating coolant system continuously flushes grinding debris and provides lubrication cooling, preventing thermal deformation of the ball valve sphere, improving surface finish quality, reducing abrasive wear and improving overall processing consistency.

Comparison with Single-head Manual Valve Lapping Machines

Detailed Technical Parameters

Order Acceptance & Customization Capability

Production Capacity: Standard multi-spindle lapping machines monthly output 8-12 sets, lead time 30 days; custom spindle configurations 35-40 days.

Custom Scope: Spindle count, maximum ball valve diameter, servo parameters, automatic cycle programs, touch screen control upgrade, export wiring configuration.

Order Types: Valve manufacturer mass production line orders, regional valve repair workshop bulk orders, overseas valve factory turnkey production line orders, small validation trial orders.

Material Adaptation: Compatible with stainless steel, carbon steel, hard alloy, tungsten carbide ball valve core materials.

Documentation Support: Factory test reports, operation manuals, technical drawings, export packing lists for overseas market clearance.

After-sales Service Guarantee System

Pre-sales Service

● Valve process engineers provide lapping process consultation, confirm ball valve size, material and finish requirements, provide layout drawings and process parameter guidance.

● Provide sample lapping test service, generate lapping process parameters and formal quotation.

In-sales Service

● Progress video tracking, factory trial run inspection before shipment, complete lapping test report.

● Export wooden case packaging with shockproof and moisture-proof treatment, suitable for sea and land long-distance transport.

After-sales Service

● 24-month warranty for servo motors, spindle components and electrical control systems, free replacement of non-human damaged parts.

● Multilingual operation manuals and video tutorials for lapping parameter setup and daily maintenance, remote technical support.

● Lifelong spare parts supply and process technical guidance, standard servo and electrical components for easy local maintenance globally.

Frequently Asked Questions

Q1: Are you a trading company or a manufacturer?

A1: We are Wenzhou Yufeng Valve Machinery Manufacturer, a direct factory specializing in valve processing and testing equipment.

Q2: What is your MOQ?

A2: MOQ is 1 set, support trial orders and large batch production line orders for ball valve factories.

Q3: What ball valve sizes can this machine process?

A3: The Double Head Spherical Ball Grinding Machine DN50-300 standard model applies to DN50-DN300 ball valve cores, can be customized for extra-large or small specifications.

Q4: Can it process hard alloy / tungsten carbide ball valve spheres?

A4: Yes, we can configure corresponding abrasive tools and adjust servo parameters on the Double Head Spherical Ball Grinding Machine DN50-300 for hard alloy material fine lapping.

Q5: Can we upgrade to full CNC touch screen automatic control?

A5: Yes, we offer PLC touch screen automatic cycle lapping system upgrade as an optional configuration.

Q6: What is the standard delivery cycle?

A6: Standard 4-spindle model: 30 days; custom modified models: 35-40 days.

Q7: What payment methods do you accept?

A7: T/T 30% deposit, balance before shipment; large long-term orders can negotiate payment terms.

Q8: Can we get process parameter guidance?

A8: Yes, we provide standard lapping process parameters, abrasive selection guide and video training after delivery.

Q9: How to adjust spindle speed and lapping time?

A9: Each spindle has independent variable frequency control panel, we provide full parameter setting tutorials and remote guidance.

Q10: What is the warranty policy?

A10: 24 months warranty for core servo and spindle components, lifelong technical support and spare parts service.

Q11: How to get an accurate quotation quickly?

A11: Please provide ball valve nominal diameter, material, finish requirements and daily output, we will quote within 24 hours.

Q12: Are spare parts easy to purchase globally?

A12: We adopt universal servo motors and electrical components, easy to purchase locally, plus global courier spare parts support.

Purchase Guide

If you are looking for a reliable vertical hydraulic valve pressure test bench for valve factory production lines, inspection labs and overseas engineering projects, please send us your valve parameters and testing requirements. Our professional team will provide a customized technical solution and factory price quotation within 24 working hours.