Key Features
Overview
The Mirka 23-321-060 Bulldog Gold 5 in. 5-Hole P60 PSA Vacuum Disc is a coated abrasive sanding disc made for heavier stock removal, prep work, and general surface sanding. This is a PSA vacuum sanding disc designed for material removal and finishing prep on a 5 inch sanding platform. Model Number: 23-321-060. If you need a disc that cuts faster than a finer grit and still holds up through real sanding time, this is the kind of abrasive you keep in the shop for the early stages of the job.
What matters here is the combination of P60 grit, aluminum oxide abrasive, and Mirka’s Bulldog Gold series construction. P60 is aggressive enough to remove material efficiently, flatten rough areas, and prep surfaces before you move to finer grits. The aluminum oxide grain is a proven choice for consistent cutting and solid disc life, especially when you’re not looking for a one-pass finish but a dependable working disc that can handle real removal.
The disc uses a pressure sensitive adhesive backing, which makes it the right choice for sanders and backup pads built for PSA attachment. That matters because PSA discs stay planted once applied, which is useful when you’re doing repetitive sanding passes and want a secure bond without the flex and lift you can sometimes get from worn hook and loop pads. If your machine is set up for PSA, this style is simple, direct, and jobsite practical.
The 5-hole vacuum pattern is there for dust collection when paired with the proper vacuum-style sanding pad. Better dust pull does more than keep the work area cleaner. It helps the abrasive face stay clearer, reduces loading, and can improve consistency across the surface. Supplementary source data also notes a special stearate treatment for improved resistance to clogging and loading, which is exactly the kind of detail that matters when you are sanding longer and do not want the disc to stop cutting early.
Construction-wise, this is a paper-backed coated abrasive disc from Mirka’s Bulldog Gold line. That tells you what kind of product it is: a practical, production-friendly sanding disc for users who care about predictable cut and clean disc changes more than gimmicks. The coated abrasive design and resin bond are meant to support the grain and keep the disc working through demanding prep tasks.
Compatibility is straightforward. This disc is made for 5 inch PSA sanding setups with a 5-hole dust pattern. If your sander or backup pad uses hook and loop, this is not the right attachment style. If your pad matches the 5 inch diameter, 5-hole pattern, and PSA mount, this Mirka sanding disc makes sense for shop sanding, bodywork prep, wood surface leveling, and general abrasive work where you want a fast-cutting disc before stepping through finer grits.
Who should buy it? This is a good fit for refinishers, woodworkers, automotive users, and serious DIYers who already know their pad style and need a 5 inch PSA sanding disc for real material removal. If you are stocking abrasives for a shop and want a reliable coarse grit disc from a known abrasive brand, the Mirka 23-321-060 lands in the practical category: simple spec, clear use case, no nonsense.
Built for Early-Stage Sanding
This grit range is for the part of the job where you need the disc to actually remove material. P60 is a working grit for leveling, stripping, and prep before you refine the surface with finer discs.
- P60 abrasive grit for faster cut than finish-oriented discs
- Aluminum oxide grain for durable, dependable sanding performance
- Bulldog Gold series built for general sanding and heavier removal work
Simple PSA Mounting, Cleaner Vacuum Sanding
The pressure sensitive adhesive backing is made for users who want a firm bond to the sanding pad, while the 5-hole pattern supports vacuum-style dust pickup on matching equipment. That combination keeps the setup straightforward and the sanding process more controlled.
- 5 inch disc diameter fits common 5 inch sanding platforms
- 5-hole vacuum pattern supports dust extraction on matching pads
- PSA backing is intended for pads designed for pressure sensitive adhesive discs
Key Specifications
| Disc Diameter | 5 in. |
|---|---|
| Vacuum Hole Design | 5 Hole |
| Abrasive Grit | P60 |
| Abrasive Material | Aluminum Oxide |
| Backing Material | Paper |
| Back Mounting Type | Pressure Sensitive Adhesive (PSA) |
| Abrasive Type | Coated |
| Made In | Finland |
Compatibility
Built For
Pro Tip
Before you order PSA discs, check your pad style first. If your sander uses hook and loop, this Mirka disc will not mount correctly, and if the hole pattern does not match, you give up a big part of the dust-control benefit.
Tool Nut’s Take
Mirka 23-321-060 Bulldog Gold 5 in. 5-Hole P60 PSA Vacuum Disc gets right to the point
This is a no-nonsense coarse sanding disc for users who need a real working grit on a PSA vacuum setup, not a finish disc pretending to be versatile.
- Who it’s for: Woodworkers, refinishers, auto body users, and serious DIYers running a 5 inch PSA sander or backup pad.
- Why it stands out: P60 grit, aluminum oxide grain, 5-hole vacuum layout, and Mirka’s Bulldog Gold abrasive platform make it a practical choice for stock removal and prep.
- Worth knowing: Make sure your machine takes PSA discs and a 5-hole pattern. Attachment style matters here just as much as grit.
Common Questions
- What grit is this disc? It is a P60 abrasive disc, which is a coarse grit intended for heavier sanding and material removal.
- What type of mounting does it use? It uses a pressure sensitive adhesive backing, so it is intended for PSA sanding pads rather than hook and loop pads.
- Does it support dust extraction? Yes. The disc has a 5-hole vacuum pattern and is meant to be used with a matching 5-hole pad for dust collection.
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