4-1/2" X 5/8"-11 T29 ZIRCONIA HIGH DENSITY FLAP DISC - 1 PIECE
Built for demanding flat-surface grinding where standard flap discs can run out of usable abrasive too quickly, this 4-1/2" T29 zirconia high density flap disc uses a thicker Jumbo construction with more flaps than a regular-density disc. The added abrasive volume gives fabricators more grinding material to work through, while the self-sharpening zirconia grain continually exposes fresh cutting edges under the heat and pressure of metal grinding.
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 flat material. Its overlapping flaps combine aggressive grinding with progressive surface refinement, giving the operator more control than a rigid grinding wheel while reducing the need to switch between separate grinding and finishing abrasives.
The 5/8"-11 threaded hub adds convenience by allowing the disc an easy spin-on spin-off attachment to compatible angle grinders without a separate retaining nut. Combined with the thicker High Density/Jumbo construction, durable zirconia grain, and computer-controlled flap placement, this disc is built for users who want increased abrasive capacity, efficient mounting, and strong performance on repeated grinding jobs.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
4-1/2"
Mounting
5/8"-11 Threaded Hub
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
13,300
Use
Dry Only
Product Features
True High Density / Jumbo construction with more flaps than regular-density flap discs
1/2" thick profile provides more usable abrasive material
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 flat surfaces
Because High Density/Jumbo flap discs are thicker than regular-density discs, always confirm proper guard clearance before use. The grinder's operating speed must not exceed the flap disc's 13,300 RPM maximum.
Safety Tips
Inspect the flap disc before use and do not use a damaged disc.
Never exceed the maximum rated speed of 13,300 RPM.
Confirm the 5/8"-11 threaded hub is fully and securely mounted before operation.
Verify proper guard clearance for the thicker High Density construction.
4-1/2" X 5/8"-11 T29 ZIRCONIA HIGH DENSITY FLAP DISC - 1 PIECE
Built for demanding flat-surface grinding where standard flap discs can run out of usable abrasive too quickly, this 4-1/2" T29 zirconia high density flap disc uses a thicker Jumbo construction with more flaps than a regular-density disc. The added abrasive volume gives fabricators more grinding material to work through, while the self-sharpening zirconia grain continually exposes fresh cutting edges under the heat and pressure of metal grinding.
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 flat material. Its overlapping flaps combine aggressive grinding with progressive surface refinement, giving the operator more control than a rigid grinding wheel while reducing the need to switch between separate grinding and finishing abrasives.
The 5/8"-11 threaded hub adds convenience by allowing the disc an easy spin-on spin-off attachment to compatible angle grinders without a separate retaining nut. Combined with the thicker High Density/Jumbo construction, durable zirconia grain, and computer-controlled flap placement, this disc is built for users who want increased abrasive capacity, efficient mounting, and strong performance on repeated grinding jobs.
Quantity: 1 Piece
Product Specifications
Specification
Details
Outer Diameter
4-1/2"
Mounting
5/8"-11 Threaded Hub
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
13,300
Use
Dry Only
Product Features
True High Density / Jumbo construction with more flaps than regular-density flap discs
1/2" thick profile provides more usable abrasive material
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 flat surfaces
Because High Density/Jumbo flap discs are thicker than regular-density discs, always confirm proper guard clearance before use. The grinder's operating speed must not exceed the flap disc's 13,300 RPM maximum.
Safety Tips
Inspect the flap disc before use and do not use a damaged disc.
Never exceed the maximum rated speed of 13,300 RPM.
Confirm the 5/8"-11 threaded hub is fully and securely mounted before operation.
Verify proper guard clearance for the thicker High Density construction.
Secure the workpiece and maintain control of the grinder throughout use.
Dry use only.
Frequently Asked Questions
High Density and Jumbo refer to the same heavier flap-disc construction. This disc uses more abrasive flaps and has a thicker overall profile than a regular-density flap disc, giving the user more usable abrasive material.
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 fence posts, gates, risers, tubing, and similar fabricated components.
The threaded hub spins directly onto a compatible 5/8"-11 grinder spindle, eliminating the need for a separate retaining nut and making disc changes faster and more convenient.
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.
Dry use only.
Compatible 5/8"-11 examples include the Benchmark Abrasives 4-1/2" Corded Angle Grinder, Makita GA4530, DEWALT DWE402, Bosch GWS10-45P/GWS10-45PD/GWS10-45DE, and Milwaukee 2880-20. Confirm the threaded hub seats fully, the proper guard is installed, and the grinder speed does not exceed the disc rating.
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