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Planetary Floor Preparation System
- $5,404.00
- Brands National Flooring Equipment
- Product Code: 8274-4
- Availability: In Stock
National Flooring Equipment 8274-4 Planetary Floor Preparation SystemPowerful Concrete Grinding, Floor Preparation, and PolishingThe National Flooring Equipment 8274-4 Planetary Floor Preparation System is a versatile 18.5-inch planetary grinder designed for demanding concrete preparation, coating removal, and polishing applications. Powered by a 3 HP motor, it delivers substantial grinding perfor..
Concrete Grinding and Surface Preparation Machine
National Flooring Equipment 8274-4 Planetary Floor Preparation System
Powerful Concrete Grinding, Floor Preparation, and Polishing
The National Flooring Equipment 8274-4 Planetary Floor Preparation System is a versatile 18.5-inch planetary grinder designed for demanding concrete preparation, coating removal, and polishing applications. Powered by a 3 HP motor, it delivers substantial grinding performance while operating from a 115V power supply.
Its variable-speed control, soft-start technology, adjustable working weight, and quick-change magnetic tooling allow operators to configure the machine for different surface-preparation requirements. From removing thin-set and adhesives to preparing concrete for coatings and polishing floors, the 8274-4 is designed to handle a broad range of professional applications.
Key Features
3 HP motor with 115V operation provides high grinding power without requiring a 230V supply.
18.5-inch grinding disk provides a useful balance between coverage and maneuverability.
Variable-speed control lets operators adjust the grinding action according to the material and tooling.
Soft-start technology helps control amperage draw during startup.
Adjustable weights allow the operator to increase or decrease grinding pressure.
Quick-change magnetic tooling system makes changing compatible tooling faster and more convenient.
Forward and reverse operation can help improve tooling utilization and wear consistency.
Adjustable dust guard allows close work near walls while helping contain grinding dust.
Dual rear vacuum ports provide convenient dust-extraction connections.
Modular construction allows the machine to be separated into sections for easier transportation.
Compatible with National Flooring Equipment's range of metal-bond diamonds, PCDs, and preparation tooling.
Recommended Applications
The 8274-4 is suitable for a wide range of surface-preparation and restoration tasks, including:
Removing thin-set
Removing adhesives
Removing coatings
Removing high spots
Preparing concrete for overlays
Preparing concrete for coatings
Concrete grinding
Wood-floor sanding and refinishing
Concrete polishing
Surface profiling
Creating a consistent scratch pattern for coating applications
With the appropriate tooling, the system can progress from aggressive material removal to finer surface preparation and polishing. National Flooring Equipment states that the machine can prepare and polish concrete up to a 3000-level polish.
Product Specifications
| Specification | Details |
|---|---|
| Model | 8274-4 |
| Product Type | Planetary Floor Preparation System |
| Grinding Disk Size | 18.5 in / 47 cm |
| Overall Width | 20 in / 51 cm |
| Maximum Height | 52 in / 132 cm |
| Minimum Height | 27.5 in / 70 cm |
| Maximum Length | 75 in / 191 cm |
| Minimum Length | 38.5 in / 98 cm |
| Weight | 388 lb / 176 kg |
| Motor Power | 3 HP / 2.24 kW |
| Motor Speed | 400–2,000 RPM |
| Drum RPM | 133.8 RPM |
| Motor Phase | Single phase* |
| Voltage | 115V |
| Frequency | 60 Hz |
| Current Settings | 15A or 20A |
| Speed Control | Variable |
| Startup System | Soft start |
*The manufacturer's current specifications identify the machine as single phase at 115V. Earlier documentation describes the motor arrangement as a power conversion from single phase to three phase.
Tooling System
One of the main advantages of the 8274-4 is its flexible tooling platform. The machine accepts National Flooring Equipment's compatible grinding and polishing tooling, allowing the operator to select the appropriate abrasive for the job.
The quick-change magnetic mounting system helps simplify tooling changes, while the included Velcro adapters allow compatible polishing pads and brazed disks to be used.
Included Accessories
The 8274-4 package includes:
401882 — Morflex couplers
9241 — Quick-change magnetic-mount assemblies
9245 — Velcro adapters
73135 — 5/32-inch hex key
6280-401B — 7/32-inch T-handle wrench
Three quick-change magnetic assemblies and three Velcro adapters are required for the three-satellite tooling arrangement.
Designed for Better Dust Management
Floor grinding can generate substantial airborne dust, particularly during dry concrete preparation. The 8274-4 incorporates dual rear vacuum ports and an adjustable dust guard to help connect the grinder to an appropriate dust-extraction system.
For professional dry-grinding applications, National Flooring Equipment recommends pairing the 8274-4 with suitable dust-collection equipment such as its DL2000 dust collector and DLS2000 pre-separator.
Easy Transport and Jobsite Handling
Although the 8274-4 is a substantial 388-pound machine, its modular construction is intended to make transportation more manageable. The handle and weights can be removed, and the machine can be separated into multiple sections for moving between vehicles, work areas, or floors.
The adjustable handle also helps operators configure the machine for a more comfortable working position.
Why Choose the 8274-4?
The National Flooring Equipment 8274-4 is a strong choice for contractors who need one machine capable of both aggressive surface preparation and concrete polishing. Its 3 HP motor, 18.5-inch grinding path, adjustable speed, configurable grinding pressure, and broad tooling compatibility make it adaptable to different stages of a flooring project.
Whether the job involves removing old coatings, stripping adhesive, preparing concrete for a new coating system, or progressively polishing a concrete floor, the 8274-4 provides a flexible platform for professional floor preparation.
Important Note
The grinder's performance depends heavily on selecting the correct tooling for the material and desired surface profile. Grinding and polishing diamonds, PCDs, and other consumables are application-specific and are not all included with the standard 8274-4 machine package.