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Double Disc Grinding Machines

Product Overview
 

Precision double disc grinding machines are engineered for simultaneous, high-rate stock removal on two parallel faces of metallic and non-metallic workpieces. Built on a rigid, thermally symmetrical Meehanite cast iron bed, these systems achieve sub-micron tolerances in high-volume production environments. System configurations support both horizontal and vertical spindle orientations, tailored for continuous through-feed or reciprocating in-feed grinding methodologies.

 

 
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    Automatic Double Disc Grinding Machine

    The full automatic double disc grinding machine（Model SX150-12YL） is mainly used for the production line of engine connecting rods to meet the requirements of both diesel and gasoline engine
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  • CNC Double Disc Grinding Machine
    CNC Double Disc Grinding Machine

    The CNC double disc grinding machine (Model SX150-9W) is suitable for high-precision grinding of both end surfaces of larger components such as diesel engine connecting rods, carbon ceramic plates,
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  • Precision Double Disc Grinding Machine
    Precision Double Disc Grinding Machine

    The precision double disc grinding machine (Model SX100-5W) is suitable for high-precision processing of both end faces of parts with various shapes and materials. It is particularly applicable to
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  • Double Disc Grinding Machine for Carbon Ceramic Brake Disc
    Double Disc Grinding Machine for Carbon Ceramic Brake Disc

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  • Double Disc Grinding Machine
    Double Disc Grinding Machine

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  • Horizontal Shaft Double Disc Grinding Machine
    Horizontal Shaft Double Disc Grinding Machine

    The M7650B horizontal shaft double disc grinding machine offers good versatility, a simple fixture structure, relatively quick and easy changeover between workpiece types, high grinding efficiency,
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  • Double Disk Grinder
    Double Disk Grinder

    The MY7650B double disc grinder is suitable for grinding the upper and lower end faces of parts with various shapes and different materials. It is particularly applicable to workpieces that require
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  • Through Type Double Disc Grinding Machine
    Through Type Double Disc Grinding Machine

    The M7675B through-type double disc grinding machine is suitable for grinding a variety of product specifications on a single machine, offering relatively strong grinding capability. It is mainly
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  • Thinning Machine
    Thinning Machine

    The SX100-5W2 thinning machine is particularly suitable for thinner workpieces, with a minimum grinding thickness of 0.45mm. It can perform high-precision grinding of both end faces of parts with
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  • Connecting Rod Double Disc Grinding Machine
    Connecting Rod Double Disc Grinding Machine

    The LGM75C special double disc grinding machine for connecting rods is a through-type high-efficiency machine independently developed by our company based on the digestion and absorption of advanced
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  • High Precision Double Disc Grinding Machine
    High Precision Double Disc Grinding Machine

    The SXM80D high-precision double disc grinding machine integrates the advantages of horizontal spindle double disc grinding machines from both domestic and international sources, and is manufactured
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  • CNC Automatic Double Disc Grinding Machine
    CNC Automatic Double Disc Grinding Machine

    The SX150D-13YL CNC automatic double disc grinding machine is an intelligent model capable of grinding stepped connecting rods with unequal thickness between the large and small ends, providing a
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Grinding Process & Working Principle

 

Simultaneous dual-wheel stock removal eliminates separate setup stages, ensuring absolute geometric symmetry between opposing faces.

Through-Feed Grinding

Components pass continuously between two opposing abrasive discs via a rotary carrier or star wheel, optimized for high-volume, uniform-geometry parts like bearing rings and shims.

In-Feed (Plunge) Grinding

The workpiece is loaded into a stationary fixture; the grinding heads feed inward symmetrically to a predetermined stop, applied for stepped shafts, connecting rods, or components requiring shoulders.

Abrasive Formats

Utilizes resinoid, vitrified, or diamond/CBN superabrasive discs, paired with continuous or intermittent diamond roll dressers to maintain profile accuracy.

 

Machine Types & Configurations

 

 

Horizontal Double Disc Grinders

Ideal for medium-to-large components; allows gravity-assisted loading and direct coolant application to the grinding zone.

 

Vertical Double Disc Grinders

Features vertical spindles minimizing footprint, optimal for small-to-medium parts requiring high-density rotary carrier automation.

 

Custom Spindle Layouts

Independent slide adjustments per side ensure precise individual wheel wear compensation and load monitoring.

 

 

Workpiece & Processing Capability

 

Materials Processed: Forged steel, cast iron, sintered powder metallurgy, ceramics, brass, and aluminum.

 

Typical Dimensions: Outer diameter / thickness ranges from 5 mm to 300 mm (customizable via specialized fixtures).

 

Achievable Tolerances:
•  Parallelism: ≤0.002 mm
•  Flatness: ≤0.002 mm
•  Dimensional Repeatability: ±0.001 mm
•  Surface Finish (Ra): 0.1μm−0.8μm (dependent on abrasive selection and stock removal rate).

CNC Reciprocating Double Disc Grinding Machine

 

Technical Specifications

 

Model Series

Spindle Orientation

Max. Workpiece Size

Grinding Wheel Diameter

Spindle Motor Power

Feed Resolution

DDG-460H

Horizontal

∅150 mm

460 mm

11 kW×2

0.0005 mm

DDG-610H

Horizontal

∅250 mm

610 mm

22 kW×2

0.0005 mm

DDG-760V

Vertical

∅100 mm

760 mm

30 kW×2

0.0001 mm

DDG-900H

Horizontal

∅350 mm

900 mm

45 kW×2

0.0001 mm

 

 
 
Key Features & Machine Construction
01.

Bed Structure

High-Meehanite cast iron frame, stress-relieved via thermal annealing, eliminating residual stress and absorbing high-frequency cutting vibrations.

02.

Spindle Assembly

Cartridge-type spindles mounted on high-precision preloaded angular contact ceramic ball bearings, driven by inverter-controlled motors.

03.

Thermal Stability

Closed-loop spindle cooling circulation systems isolate motor and bearing heat, maintaining consistent thermal growth parameters over multi-shift operations.

04.

Dressers

Hydraulic-driven automatic diamond roll dressers synchronized with AE (Acoustic Emission) sensors for precise touch-sensing and minimal wheel dressing loss.

 

Applications

Automotive

Transmission gears, connecting rods, rocker arms, piston rings, and brake components.

Bearing Industry

Inner and outer bearing rings, cylindrical and tapered roller ends.

Hydraulics & Pneumatics

Valve plates, rotor blades, gerotor gears, and sliding vanes.

Electronics & Tooling

Hard carbide inserts, ceramic seals, and magnetic core laminations.

 

Grinding Trials & Process Optimization

Prior to equipment delivery, application engineering laboratories execute rigorous trial runs using customer-supplied raw blanks.

CNC Double Disc Grinder

Procedure

Evaluation of stock removal rates, determination of optimal abrasive bond hardness, and verification of target geometric tolerances.

 
Double Disc Grinding Machine

Deliverables

Complete grinding report including cycle time analysis, wheel life projection, coolant concentration parameters, and sample inspection coordinate measuring machine (CMM) data sheets.

 

Manufacturing & Quality Control

Machining & Assembly

Bed guide-ways are precision-ground on large-scale CNC gantry milling machines; spindle bores are finish-bored under temperature-controlled climate conditions.

Metrology & Inspection

Laser interferometer calibration is applied for linear axis positioning accuracy; dynamic balancing stands are used for spindle-wheel assemblies to maintain vibration levels below 0.8 mm/s.

Traceability

Full material mill test certificates (MTC) for structural castings and main shafts are archived for long-term records.

 

Customization & OEM
Integration
Custom automation design including vibratory bowl feeders, gantry loaders, or robotic arm interfaces.
Special Tooling
Tailored rotary carrier plates and guide shoes matched precisely to unusual workpiece geometries.
Software
PLC/HMI program modifications supporting multilingual interfaces and customized SCADA data logging protocols.

 

Installation, Training & After-Sales Support

 

Horizontal Shaft Double Disc Grinding Machine

Commissioning

Certified service engineers handle on-site leveling, geometric alignment, and dry-run integration.

Precision Double Disc Grinding Machine

Training

Structured 5-day operational and maintenance training covering wheel changing procedures, dressing parameter programming, and routine troubleshooting.

CNC Double Disc Grinding Machine

Spares & Maintenance

Critical wear items (bearings, seals, drive belts, dresser tips) stocked in regional warehouses for rapid dispatch.

 

Selection Guide
 
 
 

Define Workpiece Material & Hardness

Determine if vitrified or resinoid bonds are required based on thermal sensitivity.

 
 

Calculate Stock Removal

Assess total stock removal per side (roughing vs. finishing passes) to determine motor kW requirements.

 
 

Evaluate Production Volume

Select continuous through-feed systems for mass production or indexing rotary carriers for medium-batch flexibility.

 
 

Determine Tolerance Constraints

Confirm if sub-micron parallelism mandates closed-loop in-process gauging systems.

 

 

 

FAQ

 

Q: How is thermal drift prevented during continuous 24/7 production?

A: The machine bed is cast from stress-relieved Meehanite iron with optimized internal ribbing to resist thermal distortion. Furthermore, spindles incorporate an independent chilled-oil circulation loop that maintains bearing housing temperatures within ±1∘C of ambient, effectively neutralizing thermal elongation over extended run times.

Q: What is the typical wheel wear rate and dressing frequency?

A: Wheel wear depends directly on workpiece material hardness and stock removal depth. For standard bearing steel with 0.3 mm total stock removal, dressing is typically triggered automatically every 50 to 100 parts using AE (Acoustic Emission) sensors that detect initial wheel contact, minimizing dressing removal depth to less than 0.02 mm per cycle.

Q: Can these machines handle both roughing and finishing in a single pass?

A: Yes. Multi-station through-feed configurations can be arranged with progressive wheel setups. The first set of grinding heads handles heavy stock removal (roughing), while the trailing set executes fine stock removal and spark-out, achieving final tolerance and surface finish in one continuous flow.

Q: What types of automation interfaces are supported for robotic loading?

A: Control architectures support standard industrial communication protocols including Profinet, Ethernet/IP, and Hardwired I/O interlocks, allowing seamless handshake signals with gantry loaders, articulated robots, or internal rotary transfer mechanisms.

Q: What data is required to initiate a grinding trial request?

A: To evaluate feasibility, provide 50–100 raw blanks, finished part drawings with critical GD&T callouts (parallelism, flatness, surface roughness), current manufacturing process constraints, and target production output (parts per hour). Technical laboratories will return analyzed test reports and sample parts within standard evaluation windows.

Q: What level of electrical and pneumatic utilities must be prepared prior to installation?

A: Site preparation requires a stabilized 3-phase power supply (voltage specified per regional standards, e.g., 480V/60Hz or 400V/50Hz), compressed air at 0.6−0.8 MPa (dry and filtered), and a dedicated centralized coolant filtration system with a flow rate matching the selected machine model's pump capacity (typically 150−300 L/min).

Rushan Shuangxing Machine Tool Manufacturing Co., Ltd. is one of the most reliable double disc grinding machines manufacturers and suppliers in China, featured by quality products and low price. Please rest assured to wholesale durable double disc grinding machines for sale here from our factory. Customized orders are welcome.

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