ZDMJ Series Granite Polishing Machine Line (Resin Disc Type)

ZDMJ-12D / ZDMJ-16D / ZDMJ-20D

Turn Rough Slabs into Mirror-Gloss Profit

As a granite processing factory owner, you face these daily profit drains:

• Inconsistent Manual Polishing: Workers produce slabs with uneven gloss and wavy surfaces, forcing you to cut prices and deal with returns.
• Sky-High Labor Costs: A manual polishing team can't keep up with orders, while wages and management costs keep rising.
• High Waste & Rework: Manual grinding damages slabs, turning valuable stone into scrap and costing you time and money.

This automatic resin disc granite polishing line is built to fix all these problems. It processes rough slabs into mirror-gloss finished products in a fully automatic line, turning every slab into premium, high-margin goods.

1. Resin Disc Mirror Finish: Sell Slabs for 30% More

• High-wear resin discs polish slabs from rough to fine in 12/16/20 stages, delivering a deep, reflective mirror gloss that commands premium prices.
• Built-in plate shape monitoring device automatically levels and corrects slab flatness, eliminating waviness and uneven gloss, upgrading ordinary slabs to premium grade.
• The same rough slab can sell for $2-$3 more per square meter after polishing, generating tens of thousands in extra profit per year.

2. Fully Automatic Line: 10x Faster, 80% Less Labor

• Conveyor belt automatic feeding, rough slabs in, finished slabs out, with adjustable speed 0-4m/min. The 16-head model polishes hundreds of large slabs per day, 10x faster than manual work.
• Only 1-2 workers needed to monitor the line, replacing 8-10 manual polishers, saving hundreds of thousands in annual labor costs, no more worker management headaches.
• 1300mm working width fits most standard granite slab sizes, no need for pre-cutting, perfect for engineering and export orders.

3. Smart & Durable Design: Less Downtime, More Profit

• Human-machine interface: PLC touch control, one-click parameter setting, easy for new workers to master, no need for skilled technicians.
• Automatic lubrication system + cleaning brush: Auto-oils key parts and cleans stone dust during polishing, extending disc life and ensuring consistent finish, no daily maintenance required.
• Modular electric control + reduction gear: Top-brand core components, dust and vibration resistant, 24/7 operation in stone factories, extremely low failure rate, easy maintenance.

4. Flexible for All Factory Sizes

• 3 models cover all production scales:

ZDMJ-12D: 12 heads, compact size (6.8×2m), 106kW total power, ideal for small/medium factories and startups, cost-effective choice.

ZDMJ-16D: 16 heads, balanced efficiency and cost, mainstay for medium factories with steady orders, best-selling model.

ZDMJ-20D: 20 heads, 9.2m length, for large factories and export orders, maximum productivity, no deadline stress.

• Only 15-18m³/h water consumption, recyclable, eco-friendly and cost-effective, meeting factory environmental standards.

If manual polishing with 10 workers produces 20 slabs per day, 3㎡ per slab, $50 profit per㎡, daily profit is $3,000.

With the ZDMJ-16D automatic polishing line, it produces 100 slabs per day, earning an extra $12,000 daily, plus saving 8 workers' wages ($8,000/month per worker = $76,800/year saved).

With a 30% price premium for mirror finish, $20 extra per㎡, 100 slabs = $6,000 extra daily. Over 300 days a year, that's $5.4 million in extra profit, and the machine pays for itself in months.

1. Free on-site survey: Recommend the best model and configuration based on your output, site and slab type.
2. On-site installation & training: Train your workers to operate and maintain the machine, ensuring full productivity quickly.
3. Global spare parts warehouse: 24-hour delivery of discs and wear parts, 24/7 technical support to avoid production downtime.
4. Export customization: Custom voltage, language, and certifications for shipment to any stone factory worldwide.

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