21.65 HM4 SILENT CORE - Extreme Hard Material Blade - MASX22-141-QD-HM4SC

Engineered for the toughest jobs, the iQ Power Tools 21.65" Masonry Extreme Hard Material Blade is built to slice through the hardest, most dense materials up to 9,000 PSI with precision and efficiency. Featuring industrial grade diamond segments and our exclusive Q-Drive Arbor for a secure, vibration free fit, this blade delivers exceptional performance in demanding cutting conditions.

The Cool Cut Technology keeps blade temperatures low, reducing heat warping and extending blade life even in continuous dry cutting applications. Whether you're working with engineered stone, dense pavers, or other extreme hardness masonry products, this 21.65" blade powers through with speed, accuracy, and less dust.

KEY FEATURES:
• SKU: MASX22-141-QD-HM4SC
• 21.65" blade designed for high capacity masonry saws
• Cuts materials up to 9,000+ PSI
• Maximum cutting power
• Q-Drive Arbor for fast, secure mounting
• Cool Cut Technology for reduced heat and extended blade life
• Optimized for dry cutting with iQ Power Tools saws
• dBA Static @ 1 meter: 105

The 21.65 HM4 SILENT CORE – Extreme Hard Material Blade – MASX22-141-QD-HM4SC is a large‑diameter, professional diamond blade engineered by iQ Power Tools for extreme‑hardness concrete and masonry up to 9,000 PSI, with an advanced Silent Core design for smoother, quieter cutting on high‑performance dry‑cut saws like the iQ1550. Built on the same HM4 Extreme Hard Material platform as iQ’s 16.5" blades, this 21.5–21.65" Q‑Drive blade combines industrial‑grade diamond segments, Cool Cut Technology, and a vibration‑damping core to dominate the toughest jobs with maximum cutting power, reduced noise, and extended blade life.

Product identity and sizing

The 21.65 HM4 SILENT CORE – Extreme Hard Material Blade – MASX22-141-QD-HM4SC sits at the top of iQ’s HM4 range as the large‑format option for deep cuts in very hard materials.

Factory descriptions of the HM4 Extreme Hard Material blades stress:

• “Built to slice through the hardest, most dense materials – up to 9,000 PSI – with precision and efficiency.”

• Designed for engineered stone, dense pavers, and other extreme‑hardness masonry products.

This means the MASX22‑141‑QD‑HM4SC is ideal for:

• High‑strength, high‑PSI concrete and structural elements.

• Premium, dense concrete pavers and slabs that quickly glaze standard blades.

• Large retaining wall units and architectural block with very hard aggregates.

Where typical blades stall, glaze, or wear prematurely, the HM4 bond and segment design keep cutting speed and consistency high on these demanding materials.

Silent Core technology: quieter, smoother cutting

The “SILENT CORE” and “SC” suffix in MASX22-141-QD-HM4SC indicate that this blade includes iQ’s Silent Core construction.

Silent‑type cores are built to:

• Reduce noise by damping vibration within the steel core, cutting down on high‑pitched blade whine.

• Lower vibration, giving a smoother cutting feel and reducing fatigue on both the operator and the saw.

Paired with the inherently larger diameter and mass of a 21.5" blade, the Silent Core in the MASX22‑141‑QD‑HM4SC is especially important for:

• Noise‑sensitive residential and commercial jobs.

• Long cutting sessions where reduced vibration protects the saw’s bearings and improves operator comfort.

Industrial‑grade HM4 diamond segments and Q‑Drive arbor

The HM4 Silent Core Extreme Hard Material Blade uses the same advanced segment technology as the 16.5" version, scaled for a 21.5–21.65" diameter.

Key HM4 segment features highlighted by iQ and dealers:

• “Industrial‑grade diamond segments and our exclusive Q‑Drive Arbor for a secure, vibration‑free fit.”

• “Maximum cutting power in extreme hard materials.”

• “Optimized for dry cutting with iQ Power Tools saws.”

The Q‑Drive arbor is a proprietary mounting system used across iQ’s saws, providing:

• Fast, secure mounting without the slop of generic arbor adapters.

• A positive, centered fit that minimizes vibration and run‑out.

On your page, clearly state that MASX22‑141‑QD‑HM4SC uses the iQ Q‑Drive arbor and must be used on Q‑Drive compatible saws, such as the iQ1550 masonry saw.

Cool Cut Technology and dry‑cut performance

All HM4 Extreme Hard Material blades feature iQ’s Cool Cut Technology to control heat in dry‑cut conditions.