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American Quality | Freight Delivered Nationwide | U.S. Based Support
American Quality | Freight Delivered Nationwide | U.S. Based Support

M800 Planetary Grinder | National Flooring Equipment

Original price $34,905.00 - Original price $34,905.00
Original price
$34,905.00
$34,905.00 - $34,905.00
Current price $34,905.00
Authorized Dealer Sourcing
Financing Available for Eligible Orders
Contractor-Grade Equipment

Shipping: LTL freight. Commercial delivery preferred.

The M800 is a 32 in electric planetary grinder for large surface preparation, running a 20 HP motor on 230 V three phase. Automatic planetary lifting and a third support wheel handle loading and transport, and the transmission is fully geared rather than belt driven.

Need fitment or freight help before you order? Contact our team.

Shipping & Freight

For an order containing products from a single brand, shipping is a flat rate based on your order total:

  • Orders up to $5,000: $279
  • Orders $5,000 to $10,000: $347
  • Orders $10,000 and over: $517

These rates cover standard freight delivery to a commercial address. After you place your order, our team will confirm your delivery timeline within 1 to 3 business days.

Ordering from more than one brand? Multi-brand orders ship on separate freight and are quoted individually rather than at the flat rate above. Place your order or contact us first and we will confirm total freight before anything is finalized.

Liftgate service is not included in these rates. If your delivery location has no loading dock or forklift to unload the freight from the truck, liftgate service is required and will be added to your shipping charge. If you are unsure whether you need it, contact us before ordering.

Commercial delivery locations are preferred when available. Residential delivery, limited-access locations, and appointment scheduling may affect handling.

Lead times vary by product, manufacturer availability, and selected options. Some configured, special-order, or non-stock items require additional processing time before they ship.

Please inspect all freight shipments at delivery before signing. If you see visible damage, note it with the carrier and contact us as soon as possible.

If you need freight, delivery, or lead-time guidance before ordering, contact our team before you purchase.

Compatibility / Fitment

Compatibility varies by product type, machine setup, selected options, and intended application.

For machine-mounted equipment and attachments, buyers should confirm fitment before ordering using the relevant machine information, including model, attachment style, mount type, coupler type, hydraulic requirements, and any other product-specific requirements listed on the page.

Hardscape Heavy can assist with pre-order fitment guidance based on the information you provide. This guidance is limited to purchase and compatibility review before ordering and does not include field installation, hydraulic modification, fabrication, or on-site setup support.

If you are unsure whether a product will work with your machine or application, contact us before placing the order.

Specifications

Core Specs

  • Grinding Width: 32 in
  • Motor: 20 HP
  • Voltage: 230 VAC
  • Phase: Three
  • Frequency: 50/60 Hz
  • Transmission: Fully geared


Need full technical detail?
See the Technical Details tab. If available, also see manufacturer PDF in the Downloads tab.

Returns & Warranty

Warranty coverage is provided by the product manufacturer where applicable. Warranty terms, coverage periods, exclusions, and claim procedures vary by brand and product type.

Hardscape Heavy does not create separate warranty coverage beyond the manufacturer’s warranty unless explicitly stated on the product page.

Returns are governed by our store return policy. Because many products in this category involve freight shipping, special ordering, or configuration-specific selections, return eligibility may vary by product and condition. Special-order, custom-configured, used, damaged, or installed items may not be eligible for return.

Please review our full return policy before purchase. If you have questions about return eligibility or manufacturer warranty coverage for a specific item, contact us before ordering.

The M800 is the large electric grinder in National's line, bought for output on floors measured in tens of thousands of square feet. At thirty-two inches across the head it covers ground that a sixteen or eighteen inch machine would take three passes to reach.

A machine this size is difficult to load, and the two features that address it are the reason the specification list is short. Automatic planetary lifting raises the head without the crew levering it, and a third wheel supports the frame during loading and transport, so getting it onto a trailer is not a two-person wrestle.

The transmission is fully geared. On a twenty horsepower machine that is a maintenance decision rather than a performance one: belt-driven grinders at this power have belts that stretch and snap, and removing them removes the service interval that goes with them.

Common Applications

  • Large-area concrete grinding and polishing
  • Warehouse, retail and industrial surface preparation
  • High-output prep where pass count governs the schedule

Selection Notes

  • Requires 230 V three-phase power
  • Step to the P800 for the same head size on a propane engine
  • Ships with Fast Change and Wedge tooling plates
Capacity
Grinding width
32 in Confirm with supplier
Application
Large surface preparation jobs
Unit Specifications
Motor
20 HP
Voltage
230 VAC
Phase
Three
Frequency
50/60 Hz
Build
Transmission
Fully geared, removing belt-drive work and maintenance
Planetary lifting
Automatic
Third wheel
Supports ease of loading and transportation
Tooling plates
Fast Change and Wedge, supplied
Accessories
Tooling series
Fast Change wedge series, dozens of grit, bond and segment styles
Segment styles
Double Bar, Single Bar, Double S Seg, PCDs, Double Rapida, Double Button/Round
32 in grinding head
Covers in one pass what a smaller machine takes three to reach
Automatic planetary lifting
The head raises without the crew levering it for transport
Third support wheel
Loading a machine this size stops being a two-person wrestle

Included with Purchase

  • 1 M800 Planetary Grinder (variant/model as ordered)
  • Fast Change and Wedge tooling plates

Not Included Unless Stated

  • Diamond tooling, polishing pads and wear parts
  • Dust collector
  • On-site installation or machine configuration

Note: Confirm exact included components and mount hardware with supplier at time of order.

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