A worn or flat-spotted rear wheel is a small part with a large effect on floor prep work. Once a wheel loses its profile, the machine stops tracking straight, the head loads unevenly, and the operator spends the shift fighting the equipment instead of running it. This is the genuine MK Diamond rear wheel, part 06-500-29, sized 8 x 1.75 with a .625 bore and rated to 150 lb.
The 150 lb rating is the specification to pay attention to. Floor prep machines carry real weight, and the rear wheels carry it while the head is under load. An underrated substitute wheel will flat-spot, seize or fail under that duty, which is the argument for the OEM part rather than a hardware-store equivalent with similar dimensions.
Built for
- Restoring straight tracking on MK Diamond floor prep equipment after wheel wear
- Scheduled maintenance on rental fleet machines, where wheels take heavy cycles
- Replacing a flat-spotted or seized wheel discovered during a pre-job inspection
- Rebuilding a used machine before it goes back into service
Fitment
Dimensions are 8 inches in diameter, 1.75 inches wide, with a .625-inch bore. Before ordering, check the parts diagram for your specific MK Diamond model and confirm the wheel position, since floor prep machines commonly use different wheels front and rear. If you are unsure which wheel your machine takes, have the model and serial number available and we can help confirm the part.
Specifications
- Part number: 06-500-29
- Position: rear wheel
- Diameter: 8 inches
- Width: 1.75 inches
- Bore: .625 inches
- Load rating: 150 lb
- Type: genuine MK Diamond replacement part
Frequently asked questions
How do I know this wheel fits my machine?
Check the parts diagram for your specific MK Diamond model and confirm both the wheel position and the dimensions: 8-inch diameter, 1.75-inch width, .625-inch bore. Floor prep machines frequently use different wheels front and rear, so position matters as much as size.
Why not use a generic wheel with the same dimensions?
The 150 lb load rating is the reason. Floor prep equipment puts sustained weight on the rear wheels while the head is under load. An underrated wheel with matching dimensions will flat-spot or seize under that duty.
What are the symptoms of a worn rear wheel?
The machine pulls to one side or wanders instead of tracking straight, the head loads unevenly across the cut, and you may hear or feel a flat spot as the wheel rotates.
Is this a genuine MK Diamond part?
Yes. This is the OEM part number 06-500-29 from MK Diamond, not an aftermarket equivalent.
Discount Cleaning Products is an authorized dealer for this equipment, with US-based product support and parts sourcing from the same catalog the manufacturer supplies. Questions about fit, compatibility, or the right configuration for your operation get answered by people who sell and service this category every day.
