Executive Overview: High-Precision Countertop & Edge Finishing Solution
The KAIDA CNCM-3 Granite Multifunctional Polishing Machine (Multifunction Stone Edge & Sink Cutout Polisher) is an essential, high-efficiency machine designed specifically for countertop fabricators, vanity top manufacturers, and architectural stone processors. As natural granite, marble, and quartz countertops demand increasingly complex edge profiles and flawless inner sink cutouts, traditional hand-held angle grinders struggle with gloss consistency, dimensional accuracy, and labor costs.
Built with a heavy-duty high-precision casting frame, the CNCM-3 combines structural rigidity with versatile multi-axis motion. Featuring an innovative extendable 360° rotating grinding head and a two-speed motorized travel feed, this machine seamlessly handles both straight-line edge profiling and complex inner-basin curve grinding for undermount sinks. With a maximum processing length of 3,000 mm, width of 600 mm, and slab thickness capacity up to 150 mm, the CNCM-3 delivers mirror-finish gloss, high production yield, and straightforward operational ergonomics.
KAIDA CNCM-3 Granite Multifunctional Polishing Machine in operation
Technical Specifications Matrix (Model: CNCM-3)
| Technical Parameter | Specification / Dimension | Notes & Industry Standard |
|---|---|---|
| Machine Model | CNCM-3 | Multifunction Edge & Contour Polisher |
| Standard Grinding Wheel Diameter | Ø150 mm | Accepts standard M14/Bore diamond & resin wheels |
| Max. Processing Length | 3,000 mm | Accommodates full-length kitchen countertops & slabs |
| Max. Processing Width | 600 mm | Standard vanity top & countertop depth support |
| Max. Processing Thickness | 150 mm | Handles thick slabs, laminated edges, and heavy steps |
| Main Motor Power | 5.5 kW | High-torque industrial motor for deep granite grinding |
| Total Electric Power | 8.5 kW | Includes feed travel motor, coolant pump, & head drives |
| Cooling Water Consumption | 3.0 m³/h | Wet polishing system prevents thermal stress & dust |
| Overall Dimensions (L × W × H) | 4,400 × 2,300 × 1,600 mm | Compact footprint optimized for fabricator workshops |
| Total Machine Weight | 950 kg | Solid high-precision cast iron structure for anti-vibration |
Core Engineering Innovations & Structural Advantages
1. High-Precision Cast Iron Frame & Vibration Damping
Unlike lightweight welded sheet-metal polishers that flex under heavy lateral grinding pressure, the CNCM-3 chassis is assembled entirely from stress-relieved high-precision castings. This solid 950 kg structural foundation effectively dampens spindle vibration, ensuring that diamond wheels maintain exact contact geometry with hard granite surfaces, eliminating edge chatter marks and extending grinding wheel service life. For primary slab preparation before edge polishing, consider pairing this machine with our high-efficiency bridge saw.
2. Dual-Function 360° Rotating & Extendable Machine Head
The core versatility of the CNCM-3 lies in its articulated spindle head configuration:
- Inner Basin & Curved Contour Grinding Mode: By pulling out the articulated machine head, operators can maneuver the grinding wheel inside sink cutout openings to polish complex inner radiuses, oval undermount sink curves, and arc edges with 360° rotational freedom.
- Straight Line & Edge Profiling Mode: Positioning the head flat locks the spindle horizontally along the high-precision linear guide rail, allowing fast, continuous profiling and edge polishing (flat edge, pencil round, bevel, half-bullnose, and simple decorative profiles).
To further enhance your workshop's production capacity for straight slab cutting and sizing, explore our range of stone cutting machine solutions.
3. Two-Speed Motorized Travel Feed System
To accommodate different stages of stone finishing-from aggressive rough diamond milling to fine resin wheel polishing-the machine utilizes a two-speed motorized walking feed:
- High-Speed Travel: Used for rapid positioning and light surface smoothing passes on soft marble or quartz.
- Low-Speed Torque Feed: Provides steady, uniform traverse speeds during deep granite edge profiling, ensuring consistent dwell time and uniform gloss development across 3-meter countertop lengths.
4. High-Gloss Finish with Simple Operation
Equipped with a 5.5 kW main motor, the spindle delivers constant torque across the Ø150 mm grinding wheel surface. Combined with continuous 3.0 m³/h wet cooling, the CNCM-3 achieves surface gloss levels exceeding 85–95 GU (Gloss Units) on natural granite and quartz, matching or surpassing factory slab line finishes while requiring minimal operator training. For complete slab surface polishing needs alongside edge work, check out our automatic polishing machine.
Operational Mechanics & Workpiece Capabilities
KAIDA CNCM-3 Workpiece Capacity Matrix
- Max Slab Length: 3,000 mm (Accommodates full-length countertops)
- Max Slab Width: 600 mm (Standard vanity top & depth support)
- Max Thickness: 150 mm (Suitable for laminated & solid heavy slabs)
- Grinding Head: 360° Swivel + Telescopic Arm for Sink Cutouts
Supported Profile & Processing Scenarios:
- Undermount Sink Cutout Polishing: Internal rim beveling, radius corner smoothing, and inner wall polishing for granite/quartz kitchen sinks and porcelain vanity basins.
- Straight Edge Profiling: Flat polished edges with top/bottom arris, single bevels (45°), pencil edges, and half-bullnose edge profiles.
- Laminated Edge Finishing: Seamlessly grinds and polishes double-stacked 20mm+20mm or 30mm+30mm laminated countertop edges up to 150 mm total thickness.
- Curved & Island Table Top Edging: External radiuses, oval conference tables, and custom curved stone furniture tops.
-
Material Compatibility & Performance Benchmark
| Material Type | Recommended Wheel Sequence | Feed Speed Setting | Achievable Gloss Level |
|---|---|---|---|
| Hard Granite (Class 4-5) | Diamond metal Bond (50#-200#) -> Resin (400#-3000#) | Low Speed | 85 – 92 GU |
| Natural Marble | Diamond metal Bond (100#-400#) -> Resin (800#-3000#) | Dual Speed | 90 – 98 GU |
| Quartz & Engineered Stone | Specialized Quartz Resin Wheels (50#-3000#) | Medium / Dual Speed | 88 – 95 GU |
| Porcelain / Sintered Slabs | Fine Diamond Resin & Buffing Pads | Controlled Low Speed | 90 – 96 GU |
Installation, Maintenance & Daily Operating Guide
Installation Requirements
- Foundation: Flat, reinforced concrete slab floor; no dedicated deep pit required due to the compact 4,400 × 2,300 mm footprint.
- Power Connection: 3-Phase 380V/50Hz (or customized 220V/415V/440V 60Hz) with 8.5 kW dedicated breaker protection.
- Water Supply: Clean recirculating cooling water connection providing 3.0 m³/h at 0.2–0.3 MPa pressure.
Preventive Maintenance Schedule
- Daily: Clean stone slurry from the linear guide tracks and 360° head pivot joints; check water nozzle alignment to ensure full wheel coverage.
- Weekly: Lubricate main spindle bearings, travel lead screws, and rotating head locking pins with high-viscosity waterproof grease.
- Monthly: Inspect V-belt tension on the 5.5 kW main motor drive and verify two-speed gear shift engagement.
Why Partner with Fujian KAIDA Stone Machinery?
For over two decades, Fujian Kaida Stone Machinery Co., Ltd. has established itself as a premier global manufacturer of heavy-duty stone processing machinery. Operating with ISO9001 quality management and CE compliance, KAIDA delivers industrial durability trusted by fabricators across North America, Europe, the Middle East, Southeast Asia, and South America. For specialized intricate patterns and engraving work, check out our precision CNC stone router lineup.
- Direct Factory Assurance: Precision manufacturing with strict quality control on all castings, electrical components, and CNC machining.
- Global Service Infrastructure: Backed by an extensive network of international distributors and responsive technical support teams.
- Lifetime Spare Parts & Remote Assistance: Rapid component dispatch and remote technical assistance to maximize workshop uptime.
For technical inquiries, customized voltage options, or factory-direct pricing on the KAIDA CNCM-3 Granite Multifunctional Polishing Machine, contact our sales engineering team today.
