Best Diamond Blades for the Husqvarna K 770
What size blade does the Husqvarna K 770 take?
The Husqvarna K 770 takes a 14-inch (350 mm) diamond blade with a 1-inch arbor (20 mm reducer bushing included), rated to a maximum 5,400 RPM. Any quality 14-inch blade in that arbor size fits.
On This Page
The Husqvarna K 770 takes a 14-inch (350mm) blade on a 1-inch or 20mm arbor, 5,400 RPM max spindle — the blade-size answer up front. It's the lighter-duty alternative to the K 970, at 73.5cc, 5 hp and 22.4 lb, and for one-saw contractor crews it's often the better pick: lighter to swing, less fuel burn, plenty of power for residential and light-commercial cutting. Below: exactly what fits and the best blade by substrate, verified against the K 770's spindle and RPM.
Husqvarna K 770 — Tool Specs
| Engine | 73.5 cc 2-stroke |
|---|---|
| Power Output | 5 hp |
| Max Blade Diameter | 14 in (350 mm) |
| Arbor / Spindle | 1 in (25.4 mm) with 20mm bushing option |
| Max Spindle Speed | 5,400 RPM |
| Max Cutting Depth | 5 in |
| Weight (no blade) | 22.4 lb |
| Wet / Dry Rating | Both (water port standard) |
Tiered Blade Picks
Good — Most Cured-Concrete Work
The Virginia Abrasives 14-Inch Ultra Value Diamond Blade ($69.99) fits the K 770 and is our pick for occasional to regular cutting on cured concrete.
Better — Reinforced Concrete / Pro Sweet Spot
VA 14-inch Premium Sparkie ($174.30). The K 770 spins a blade at the same 5,400 RPM as the K 970 but brings 5 hp to the cut instead of 6.5 — so a glazed blade bogs this engine where the bigger saw would grind through. VA sells the Sparkie as its premium multi-purpose blade for concrete including reinforced, and this site's planning range for it is about twice the Ultra Value's, which matters when one saw and one owner pay for every blade. That range is a planning estimate, not a measurement. Full specs in the 14-inch roundup.
Best — Production Cutting
VA 14-inch Supreme Pro ($104.88). VA ranks its Supreme line above its Premium line and describes it as "specifically engineered for long life in a professional use setting." The Supreme Pro is VA's asphalt-and-concrete multi-purpose blade, with what VA calls a medium-hard bond and laser-welded 10mm segments, and it fits the K 770 on its 1-inch arbor with the 20mm bushing. It has no Amazon ratings yet, and neither VA nor this site publishes a life figure for it. If cutting on your K 770 is one line on a mixed ticket that includes asphalt, one blade covers both. Details are on the Supreme Pro page.
Every Amazon-Available Blade That Fits the K 770, Lowest Price First
Every blade and wheel below fits this saw and is sold on Amazon. The order is price, not rank.
Virginia Abrasives 14-Inch Basic Diamond Concrete Blade
VA's entry-tier 14-inch blade, with a medium bond and 12mm sintered segments, at the lowest price in VA's 14-inch lineup on Amazon. VA rates it for granite and river-rock aggregates.
14″ · 1″ arbor (20mm bushing) · max 5,460 RPM · medium bond · wet-or-dry
$54.99
★ 4.6 (12)
Virginia Abrasives 14-Inch Ultra Value Diamond Blade
Value-tier 14-inch general-purpose segmented diamond blade. Fits Stihl TS 420, Husqvarna K 770/K 970 via the included 20mm bushing.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · medium bond · wet-or-dry
$69.99
★ 4.2 (10)
Virginia Abrasives 14-Inch Medium Bond Diamond Blade
VA's True Blue blade, which VA's website marks "Made in America." It is a 14-inch medium-bond blade with 12mm laser-welded segments, rated to 5,500 RPM.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · medium bond · wet-or-dry
$74.27
★ 3.5 (2)
Virginia Abrasives 14-Inch Diamond King Diamond Blade
VA's 14-inch Diamond King, listed for concrete, asphalt and masonry on one blade. 10mm laser-welded turbo segments, cooling holes, undercut protection. No ratings yet.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · multi-purpose bond · wet-or-dry
$93.88
Virginia Abrasives 14-Inch Supreme Pro Diamond Blade
VA's Supreme-tier 14-inch blade, its professional line, listed for concrete and asphalt on a single bond. Laser-welded, 10mm segments, no Amazon ratings yet.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · multi-purpose bond · wet-or-dry
$104.88
Virginia Abrasives 14-Inch Concrete Cut-Off Wheel (10-Pack)
Type 1 reinforced abrasive wheel for occasional concrete and masonry cuts. 14" x 1/8" x 20mm arbor, 10-pack. Diamond is cheaper per cut on ongoing work.
14″ · 0.7874″ arbor · max RPM · resinoid bond · dry
$119.56
★ 3.6 (4)
Virginia Abrasives 14-Inch Premium Sparkie Diamond Blade
VA's Premium-tier 14-inch blade, sold as a multi-purpose blade for concrete including reinforced, asphalt, pavers, block and light steel. Laser-welded turbo segments.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · multi-purpose bond · wet-or-dry
$174.30
★ 5 (1)
If You're Cutting Asphalt or Green Concrete
Different substrate, different bond. These hard-bond blades fit the K 770 but are built for soft, abrasive material — not cured slab. If asphalt is a regular part of the work, the asphalt blade guide covers bond choice and undercut protection in depth.
Virginia Abrasives 14-Inch Asphalt Diamond Blade (Undercut Protected)
Hard-bond 14-inch asphalt and green-concrete blade with undercut protection on the core. Built for the abrasive slurry that eats steel cores on soft substrates.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · hard bond · wet-or-dry
$102.99
★ 3 (1)
Virginia Abrasives 14-Inch BD Asphalt / Green Concrete Diamond Blade
Hard-bond 14-inch diamond blade engineered for asphalt + green concrete. Alternating drop segments + U-slot gullets clear sticky tar slurry.
14″ · 1″ arbor (20mm bushing) · max 5,500 RPM · hard bond · wet-or-dry
$63.38
★ 5 (1)
Compatibility Gotchas
| Issue | What to Check |
|---|---|
| Arbor mismatch | K 770 takes 1" arbor with 20mm bushing. Seat the bushing if mounting via 20mm. |
| RPM over-spec | Blade max RPM must be ≥ 5,400. Standard 14" pro blades rate 5,500 — safe. |
| Bond / substrate mismatch | Hard bond for green concrete or asphalt; medium for cured; soft for rebar-heavy or hard aggregate. |
| Wet plumbing | K 770 ships with water port. Required for OSHA silica compliance on most concrete cuts. |
| K 770 12" model | A 12" variant exists — don't mount a 14" blade on the 12" model. Verify your model number. |
Husqvarna's Own OEM Diamond Blades for the K 770
Husqvarna manufactures its own 14-inch diamond blade lineup under the Tacti-Cut (economy), Vari-Cut (mid-tier), and Elite-Cut (premium) brand families. The K 770 takes any of them on its 1-inch arbor (with 20mm bushing). Listed alongside our aftermarket picks for honest comparison.
| Blade | Model # | Best For | Price |
|---|---|---|---|
| Husqvarna Tacti-Cut VH5 | 542774463 | Economy general-purpose: cured concrete, brick, roof tile, masonry. Best Husqvarna OEM value for K 770 occasional use. | $80-130 |
| Husqvarna Vari-Cut S65 | — | Mid-tier general-purpose: cured concrete + reinforced. Strong K 770 match for daily contractor work. | $140-180 |
| Husqvarna Vari-Cut S85 | — | Asphalt + green concrete. Hard bond, wider slots. | $150-200 |
| Husqvarna Elite-Cut S45 (Exo-Grit) | — | Premium production blade. Overkill for typical K 770 duty cycle but available. | $290-320 |
Husqvarna OEM is dealer-only — no Amazon Prime, no big-box availability. The K 770 is most often the one-saw contractor's pick, and the OEM premium usually does not pay back at that scale. The aftermarket picks above (VA Ultra Value at $69.99, Premium Sparkie at $174.30) fit the same spindle and ship via Amazon. Husqvarna OEM makes more sense on K 970/K 1270 production fleets than on a one-saw K 770.
Buying the K 770 Itself
Most people reading this already own a K 770 and came for the blade answer above. If you're still shopping for the saw, these are the live listings — prices verified at publication, and they move.
Husqvarna K770 14-Inch Gas Power Cutter (2026 version, model 970850301)
Updated 2026 version. 5-inch cut depth, 73.5cc.
$1,369.00
Check Price →
Husqvarna K 770 Gas Power Cutter (model 967682101)
Earlier part number, same 73.5cc platform. Compare live prices — these two swap position.
$1,369.00
Check Price →Both listings are the same 73.5cc K 770 platform — Husqvarna refreshed the part number for 2026. Check both, take the cheaper one. Blades are where the recurring spend goes: figure a $70 Ultra Value every 150-250 linear feet, which is this site's planning range rather than a measured figure.
Operator Hazards & Field Notes
Kickback geometry
Cut with the lower-front quadrant of the blade. If the upper-front quadrant contacts material, blade rotation drives the saw up and back toward you — the leading cause of cut-off-saw injury. On long or deep cuts, watch for the kerf closing and pinching the blade; a pinched blade kicks hard and without warning. Two hands, stable stance.
Cold-start & fuel
2-stroke fuel with ethanol goes stale in storage and can gum the carburetor on an occasional-use saw. Run ethanol-free fuel or add stabilizer if the saw goes unused between jobs. On a flooded warm restart, go to the run position, hold full throttle, and crank — don't keep choking it.
Fleet / OEM blades
Husqvarna's Elite-Cut and Vari-Cut blades are dealer-distributed; aftermarket (VA, MK) fits the same 1"/20mm spindle and ships via Amazon. Confirm warranty terms in writing before assuming aftermarket blades are covered — see the Husqvarna roundup.
Hand-arm vibration (HAVS) — the hazard nobody plans for
Handheld gas cut-off saws are among the highest-vibration tools on a jobsite, and sustained exposure causes Hand-Arm Vibration Syndrome (HAVS) — permanent nerve and circulation damage that first shows as numb, blanching fingers. The EU Physical Agents Directive sets a daily Exposure Action Value of 2.5 m/s² and an Exposure Limit Value of 5.0 m/s² (A(8) over 8 hours); US OSHA has no specific numeric HAVS standard but addresses it under the General Duty Clause. The K 770 has anti-vibration handle mounts, but they reduce — not eliminate — exposure. Find the declared front/rear-handle vibration figure in your operator's manual, run it through a HAVS calculator, and cap daily trigger time accordingly. A sharp, correctly-bonded blade vibrates far less than a glazed one — blade choice is also a vibration-control decision.
Why Blade Choice Matters on the K 770
The K 770's spindle profile and power output determine which blade bond pairs well with which substrate. Wrong bond, wrong tool — even a premium blade can glaze. Work through our Diamond Blade Buying Guide for the bond-substrate matrix and our RPM Guide for max-RPM cross-reference.
Under OSHA Table 1, a handheld power saw cutting concrete needs an integrated water delivery system that continuously feeds water to the blade. Table 1 lists no vacuum option for this saw. The operator also needs an APF 10 respirator indoors, and outdoors once cutting passes four hours in a shift. See our Silica Dust Safety Guide for crew protocol.
Related Saw Landings
- Best Diamond Blades for Husqvarna K 970 — the larger K-series saw
- Best Diamond Blades for Husqvarna K 760 — the saw the K 770 replaced
- Best Diamond Blades for Stihl TS 420 — the K 770's main competitor
- Best Diamond Blades for Milwaukee MX FUEL COS350 — battery alternative
- Best Diamond Blades for Husqvarna — full Husqvarna saw lineup
- K 970 vs K 770 vs TS 420 — head-to-head — cross-shopping the big three
Frequently Asked Questions
What size blade does the Husqvarna K 770 take? ▼
The K 770 takes a 14-inch (350mm) blade. A 12-inch variant exists (K 770 12-inch) but the standard model is 14-inch — same as the larger K 970 and the Stihl TS 420.
What arbor size do K 770 blades need? ▼
The K 770 spindle accepts a 1-inch (25.4mm) arbor with a 20mm bushing option. Most pro 14-inch blades ship with the 1-inch arbor + 20mm bushing — fits either way. Confirm the bushing is properly seated when using 20mm.
What's the max RPM on the K 770? ▼
The K 770 runs at 5,400 RPM max spindle speed. Any 14-inch blade rated at 5,500 RPM or higher is safe. Most professional 14-inch concrete blades meet that floor — never run a blade below the saw's spindle max.
How does the K 770 compare to the K 970? ▼
The K 770 is smaller (73.5cc, 5 hp) and lighter (22.4 lb) than the K 970 (93.6cc, 6.5 hp, 23.4 lb). Both run a 14-inch blade at 5,400 RPM max (the K 970 also takes a 16-inch at 4,700), per Husqvarna's manuals. Same blade-fit profile — both take 1-inch or 20mm arbor, and any 5,500+ RPM blade is safe on either. Blade picks cross-fit between them.
Wet or dry on the K 770? ▼
Both. Husqvarna ships the K 770 with the water-connection port ready. On concrete and masonry, OSHA Table 1 lists water fed to the blade as the only control for a handheld saw, so plumb it wet.
What's the best all-around blade for the K 770? ▼
For occasional cured-concrete cutting, the Virginia Abrasives 14" Ultra Value (around $70) fits via the 20mm bushing. For production work with rebar contact, step up to the VA Premium Sparkie, which VA sells for concrete including reinforced, or the VA Supreme Pro, VA's professional tier.
Matt Lipman is CEO of Capstone Holdings Corp. (NASDAQ: CAPS) and a board member of Virginia Abrasives. He discloses this relationship on every article that recommends a VA product.