7" X 7/8" T27 HIGH DENSITY ZIRCONIA FLAP DISC - 1 PIECE
Built for demanding grinding jobs that benefit from a larger working surface and more abrasive capacity, this 7" T27 high density zirconia flap disc uses a true Jumbo construction with more flaps and a thicker profile than a regular-density flap disc. The added abrasive volume provides more usable grinding material, while the self-sharpening zirconia grain continually exposes fresh cutting edges under the heat and pressure of heavy metalworking.
The flat T27 profile is especially well suited for shaped and non-flat workpieces such as posts, gates, risers, tubing, edges, and larger fabricated assemblies. Its overlapping flaps provide the flexibility and surface control needed to grind, blend, deburr, and progressively refine irregular surfaces, while the large 7" diameter covers substantial working area with each pass.
Benchmark Abrasives high density flap discs are built for repeated and higher-volume grinding work. The combination of true High Density/Jumbo construction, durable zirconia grain, X-weight polycotton cloth backing, and a 7" working diameter makes this disc a strong choice for larger fabrication jobs, industrial maintenance, structural work, and other demanding metalworking applications.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
7"
Inner Diameter
7/8"
Shape
T27 Flat Face
Density
High Density / Jumbo
Abrasive Grain
Zirconia
Available Grits
40, 60, 80, 120
Abrasive Backing
X-weight polycotton cloth
Max RPM
8,600
Use
Dry Only
Product Features
True High Density / Jumbo construction with more flaps than regular-density flap discs
Thicker abrasive profile provides more usable grinding material
Large 7" diameter provides increased working area for larger fabrication jobs
Self-sharpening zirconia grain continually exposes fresh cutting edges as the disc wears
T27 flat face is well suited for shaped and non-flat surfaces
Overlapping flap construction combines grinding, blending, deburring, and surface refinement
X-weight polycotton cloth backing provides strong abrasive support
Built for repeated and higher-volume grinding applications
Materials & Applications
Best For:
Carbon steel
Structural steel
Stainless steel
Cast iron
Additional Materials:
Titanium
Nickel
Wrought iron
Copper
Fiberglass
Plastic
Hard rubber
Wood
Stone
Common Applications:
Grinding and blending welds on shaped or non-flat surfaces
Posts, gates, risers, tubing, and larger fabricated assemblies
Heavy stock removal
Deburring and edge cleanup
Removing surface imperfections
Surface preparation
Large fabrication and structural work
Repeated maintenance and repair grinding
Machine Compatibility
Designed for compatible 7" angle grinders using a 7/8" mounting system.
Because High Density/Jumbo flap discs are thicker than regular-density discs, always verify sufficient guard and mounting clearance before operation. The grinder's operating speed must not exceed the flap disc's 8,600 RPM maximum.
Safety Tips
Inspect the flap disc before use and do not use a damaged disc.
Never exceed the maximum rated speed of 8,600 RPM.
Use only on a grinder approved for 7" accessories.
Confirm proper guard, flange, and mounting-hardware clearance for the thicker High Density construction.
7" X 7/8" T27 HIGH DENSITY ZIRCONIA FLAP DISC - 1 PIECE
Built for demanding grinding jobs that benefit from a larger working surface and more abrasive capacity, this 7" T27 high density zirconia flap disc uses a true Jumbo construction with more flaps and a thicker profile than a regular-density flap disc. The added abrasive volume provides more usable grinding material, while the self-sharpening zirconia grain continually exposes fresh cutting edges under the heat and pressure of heavy metalworking.
The flat T27 profile is especially well suited for shaped and non-flat workpieces such as posts, gates, risers, tubing, edges, and larger fabricated assemblies. Its overlapping flaps provide the flexibility and surface control needed to grind, blend, deburr, and progressively refine irregular surfaces, while the large 7" diameter covers substantial working area with each pass.
Benchmark Abrasives high density flap discs are built for repeated and higher-volume grinding work. The combination of true High Density/Jumbo construction, durable zirconia grain, X-weight polycotton cloth backing, and a 7" working diameter makes this disc a strong choice for larger fabrication jobs, industrial maintenance, structural work, and other demanding metalworking applications.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
7"
Inner Diameter
7/8"
Shape
T27 Flat Face
Density
High Density / Jumbo
Abrasive Grain
Zirconia
Available Grits
40, 60, 80, 120
Abrasive Backing
X-weight polycotton cloth
Max RPM
8,600
Use
Dry Only
Product Features
True High Density / Jumbo construction with more flaps than regular-density flap discs
Thicker abrasive profile provides more usable grinding material
Large 7" diameter provides increased working area for larger fabrication jobs
Self-sharpening zirconia grain continually exposes fresh cutting edges as the disc wears
T27 flat face is well suited for shaped and non-flat surfaces
Overlapping flap construction combines grinding, blending, deburring, and surface refinement
X-weight polycotton cloth backing provides strong abrasive support
Built for repeated and higher-volume grinding applications
Materials & Applications
Best For:
Carbon steel
Structural steel
Stainless steel
Cast iron
Additional Materials:
Titanium
Nickel
Wrought iron
Copper
Fiberglass
Plastic
Hard rubber
Wood
Stone
Common Applications:
Grinding and blending welds on shaped or non-flat surfaces
Posts, gates, risers, tubing, and larger fabricated assemblies
Heavy stock removal
Deburring and edge cleanup
Removing surface imperfections
Surface preparation
Large fabrication and structural work
Repeated maintenance and repair grinding
Machine Compatibility
Designed for compatible 7" angle grinders using a 7/8" mounting system.
Because High Density/Jumbo flap discs are thicker than regular-density discs, always verify sufficient guard and mounting clearance before operation. The grinder's operating speed must not exceed the flap disc's 8,600 RPM maximum.
Safety Tips
Inspect the flap disc before use and do not use a damaged disc.
Never exceed the maximum rated speed of 8,600 RPM.
Use only on a grinder approved for 7" accessories.
Confirm proper guard, flange, and mounting-hardware clearance for the thicker High Density construction.
Secure the workpiece and maintain control of the grinder throughout use.
Use the grinder's side handle as intended.
Dry use only.
Frequently Asked Questions
High Density and Jumbo refer to the same heavier flap-disc construction. This disc uses more flaps and has a thicker overall profile than a regular-density flap disc, providing more usable abrasive material.
The larger 7" diameter provides substantially more working surface than smaller flap discs, making it useful for larger fabrication, structural, and maintenance jobs where covering more area with each pass is beneficial.
T27 flap discs have a flat face and are preferred by many users when grinding shaped or non-flat surfaces such as posts, gates, risers, tubing, edges, and similar fabricated components.
A T27 flap disc has a flat face and is generally preferred for shaped and non-flat surfaces. A T29 flap disc has an angled face that ergonomically approaches flat surfaces better, making T29 the preferred choice for flat grinding applications such as grinding down bead welds.
High Density flap discs are a strong choice for repeated or heavier grinding work where having more abrasive material in each disc is beneficial. Regular-density discs remain a good option for general grinding and blending where the thicker Jumbo construction is not necessary.
Zirconia is a durable, self-sharpening abrasive that performs well under the heat and pressure generated during demanding metal grinding. It is especially useful for heavier stock removal and fabrication work.
No. This is a 7" flap disc and should only be used on a grinder specifically approved for 7" accessories with the proper guard and mounting system. Examples include the Makita GA7021 and GA7060 and the DEWALT DWE4517. Use the correct 7/8" flange and 7" guard, and verify the grinder nameplate speed does not exceed 8,600 RPM.
Dry use only.
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