7" X 7/8" T29 HIGH DENSITY ZIRCONIA FLAP DISC - 1 PIECE
Built for demanding flat-surface grinding that benefits from both a large working area and more abrasive capacity, this 7" T29 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 angled T29 profile is designed to ergonomically approach flat work surfaces, making it the preferred flap-disc shape for grinding down bead welds, blending welds, and performing controlled stock removal across larger flat areas. Its overlapping flaps combine aggressive grinding with progressive surface refinement, 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 structural fabrication, industrial maintenance, weld cleanup, and other demanding metalworking applications.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
7"
Inner Diameter
7/8"
Shape
T29 Angled Face
Face Angle
15°
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
T29 angled face ergonomically approaches flat work surfaces
Preferred profile for grinding down bead welds and blending larger flat surfaces
Overlapping flap construction combines grinding, blending, 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 down bead welds
Grinding and blending larger flat metal surfaces
Heavy stock removal
Weld cleanup and blending
Deburring
Removing surface imperfections
Surface preparation
Large fabrication and structural grinding
Repeated maintenance work
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" T29 HIGH DENSITY ZIRCONIA FLAP DISC - 1 PIECE
Built for demanding flat-surface grinding that benefits from both a large working area and more abrasive capacity, this 7" T29 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 angled T29 profile is designed to ergonomically approach flat work surfaces, making it the preferred flap-disc shape for grinding down bead welds, blending welds, and performing controlled stock removal across larger flat areas. Its overlapping flaps combine aggressive grinding with progressive surface refinement, 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 structural fabrication, industrial maintenance, weld cleanup, and other demanding metalworking applications.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
7"
Inner Diameter
7/8"
Shape
T29 Angled Face
Face Angle
15°
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
T29 angled face ergonomically approaches flat work surfaces
Preferred profile for grinding down bead welds and blending larger flat surfaces
Overlapping flap construction combines grinding, blending, 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 down bead welds
Grinding and blending larger flat metal surfaces
Heavy stock removal
Weld cleanup and blending
Deburring
Removing surface imperfections
Surface preparation
Large fabrication and structural grinding
Repeated maintenance work
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.
T29 flap discs have an angled face that ergonomically approaches flat surfaces, making them the preferred choice for applications such as grinding down bead welds, blending welds, and controlled stock removal across flat material.
A T29 flap disc has an angled face and is generally preferred for flat grinding applications such as bead welds. A T27 flap disc has a flat face and is commonly preferred for shaped and non-flat surfaces such as posts, gates, risers, tubing, and similar fabricated components.
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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