CAT CLASS: HQ-10128

30+ in Walk-Behind Concrete Saw

The 30+ in walk-behind concrete saw class comprises large self-propelled flat saws engineered for full-depth highway and bridge-deck cutting. With blade diameters ranging from 30 to 60 inches and engine power from 20 to 74.3 hp, these machines represent the heaviest end of the walk-behind saw ladder. This size class sits above the 20-30 in band and handles maximum-depth cutting in heavy infrastructure applications.

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Elija una clase de tamaño — la capacidad y el alcance varían en la gama.

Especificaciones clave

Especificación	Rango típico	Qué significa
Blade diameter	30–60 in (76.2–152 cm)	Determines maximum cutting depth; 30 in blades reach approximately 12 in, while 60 in blades cut to 24 in or deeper
Engine power	20–74 hp	Higher horsepower sustains cutting speed through reinforced concrete and maintains blade speed under load
Propulsion	Self-propelled hydraulic drive	Hydraulic systems provide consistent forward travel and controlled cutting rates in dense materials
Blade arbor	1–1.5 in shaft	Heavy-duty arbors accommodate large-diameter blades and absorb torque from high-horsepower engines

Cómo elegir

The 30+ in walk-behind saw is the correct choice for full-depth highway cuts, bridge-deck removal, runway expansion joints, and any application requiring cutting depths beyond 10 inches. For general concrete flatwork, pavement repair under 8 inches deep, or confined indoor slabs, the 20-30 in Walk-Behind Concrete Saw delivers adequate depth with better maneuverability and lower equipment weight. This largest size class is specified when cutting depth, not portability or blade economy, drives the equipment decision.

Lo que maneja este tamaño

Full-depth highway pavement removal and replacement
Bridge deck scarification and expansion joint installation
Airport runway and taxiway joint cutting
Deep utility trench cuts through reinforced roadway slabs
Dam spillway and lock wall modification
Heavy industrial floor removal in refineries and processing plants

Seguridad y operación

Blade guard adjustment and depth control interlocks prevent unintended contact with rotating blades
Water delivery systems mandatory to suppress silica dust and cool blades during cutting
Hearing protection required; large-diameter blades and high-horsepower engines produce sustained noise above 100 dB
Operator training on self-propelled controls essential; hydraulic drive systems require understanding of engagement and emergency stop procedures

Transporte y logística

Trailer transport required; machines typically weigh 800–2,500 lb and require gooseneck or equipment trailers
Loading via ramps or liftgate; larger 60 in models often require forklift or skid-steer assistance
Blade removal common practice for transport to reduce width and protect diamond segments

Alimentación

Gasoline or diesel engines; diesel predominates in models above 50 hp for fuel economy and torque
On-board fuel tanks sized for extended cuts; typical capacity 5–10 gallons supports multi-hour operation
Some models offer electric start; larger units may include battery charging systems for accessories

Preguntas frecuentes

What cutting depth does a 30 in blade achieve?

A 30 in diameter blade typically cuts to approximately 12 inches deep, accounting for arbor clearance and guard design. Actual depth varies by saw model and blade exposure settings.

When is a 60 in saw specified over a 30 in model?

60 in saws are specified for cuts exceeding 18–20 inches deep, common in thick highway pavements, reinforced industrial floors, and bridge structures where a single pass eliminates the need for over-cutting or multiple passes.

Do 30+ in saws require special blade types?

Large-diameter blades demand segment designs and core specifications matched to high peripheral speeds and deep-cut heat buildup. Laser-welded segments and reinforced cores are standard in this size class to withstand centrifugal and thermal stress.

Comparar modelos populares

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Modelo	Potencia del motor	Peso operativo
Mk Diamond MK-4036B	30 hp	1,250 lb (567 kg)
Diamond Products CC3538JK	38 hp	-
Diamond Products CC3700E	25 hp	-
Diamond Products CC5048DCV	48 hp	-
Diamond Products CC6571D	71 hp	-
Diamond Products CC6774DCV	74 hp	-