Sakai Drum Roller SV621D | 12.5 ton

Description

Sakai Drum Roller SV621D | 12.5 ton

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Specification Unit Sakai Drum Roller SV621D | 12.5 ton

The Sakai SV621D is a high-performance 12.5-ton class vibratory single-drum roller (smooth drum) designed for medium to heavy soil compaction.
It is widely used in highway construction, dam projects, and site preparation.
Below are the detailed specifications for the SV621D unit:

Weights & Dimensions

Feature Specification;
Operating Weight 12,535 kg (approx. 12.5 tons).
Max Operating Weight 12,625 kg.
Weight on Front Axle (Drum) 7,220 kg.
Weight on Rear Axle (Tires) 5,315 kg.
lass=”yoast-text-mark” />>Overall Length 5,810 mm.<br class=”yoast-text-mark” />>Overall Width 2,300 mm.
>Overall Height (with Awning) 2,960 mm.
Drum Width 2,130 mm.
Drum Diameter 1,530 mm.
Shell Thickness 25 mm.

Engine Performance

Engine Make/Model: ISUZU 4BG1T (EPA-Tier 2 compliant).
Type: Water-cooled, 4-cycle, 4-cylinder, direct injection with turbocharger.
Rated Output: 83.3 kW (112 HP) @ 2,100 rpm.
Fuel Tank Capacity: 215 Liters.
Eco Mode: Standard (reduces fuel consumption by up to 20%).

Compaction (Vibration) System

Frequency: 33.3 Hz (Low) / 28.8 Hz (High).
Centrifugal Force: 150 kN (Low) / 255 kN (High) — The high force is equivalent to 26 tons.
Nominal Amplitude: 0.86 mm (Low) / 2.03 mm (High).
Static Linear Pressure: 332 kg/cm.

Drive & Maneuverability

Transmission: Hydrostatic transmission (2 speeds).
Speed Range: 0–6 km/h (Low) / 0–10 km/h (High).
Gradeability: 51% (27°).
Turning Radius: 3.4 m (Inner) / 5.6 m (Outer).
Drive Wheels: All-wheel drive (Drum and Tires).

Key Features

Shock Isolation: Sakai’s original patented rubber isolation system reduces vibration to the operator and extends part life.
Safety: Features an emergency pedal brake in addition to standard service and parking brakes.
Vandalism Protection: Includes lockable covers for the instrument panel, engine hood, and fuel tank.
Would you like me to compare these specs with a similar model (like the SV521) or help you find a digital brochure for this unit?

Engine

Model : KUBOTA V3300.
Type : Water-cooled, 4-cycle direct injection.

Engine power
at rated engine speed 2800 rpm
ISO 14396 34.3 kW / 46.0 HP
ISO 9249 (net engine power) 33.7 kW / 45.2 HP

No. of cylinders : 4
Bore × stroke : 88 × 90 mm.

Displacement : 2.19 l.
Max. torque / engine speed :140 Nm / 1820 rpm.
Cooling system : Water

Fuel

Diesel fuel, conforming to EN590
Class 2/Grade D. Paraffinic fuel
capability (HVO, GTL, BTL),
conforming to EN 15940:2016

Transmission

Type : Hydrostatic
Pumps : 2 × variable displacement.

Hydraulic motors : 2 × axial pistons.
No. of speeds : 2.

Max. travel speed 16 km/h
Automatic working and parking brakes

Hydraulic system

Type Komatsu CLSS
Hydraulic pump Gear pump.

Max. pump flow 62 l/min
Max. operating pressure 190 bar
Max. pump flow – “Super Flow” (option) 100 l/min

Performance

Rated operating capacity : 345 kg  ( 760.60 in )
Tipping load : 690 kg ( 1521.19 in ).

Maximum travel speed : 10.3 km/h  ( 6.4 mph )
Maximum drawbar pull : 10.1 kN ( 2270.57 lbf ).

Lift arm breakout force : 7.6 kN ( 1708.55 lbf )
Bucket breakout force : 8.7 kN ( 1955.84 lbf )
Gradeability : 25°

Hydraulic System

Maximum flow : 38 L/min ( 10.04 gal/min )
Pressure – Working equipment circuit : 19 MPa ( 2755.72 psi ).

Pressure – Travel circuit : 25 MPa ( 3625.94 psi )
Pressure – Pilot circuit : 2.4 MPa ( 348.09 psi )

Loader

Operating capacity (standard bucket) 680 kg
Tipping load (standard bucket) 1360 kg.

Standard bucket capacity (ISO 7546) 0.35 m³
Bucket breakout force (ISO 14397) 1383 daN (1410 kg).

Operating capacity with pallet forks 490 kg
Max. loading height with forks 2660 mm
Reach with forks 1565 mm

Operating weight (appr.)

Weight, including open cab, operator (75 kg), liquids,
filled tank and standard equipment (without bucket) : 2675 kg.

Standard bucket (1580 mm) + 172 kg
Additional counterweight + 120 kg
Front door + 40 kg

Service refill capacities

Fuel tank 67 l
Cooling system 9.0 l
Engine oil 7.5 l
Hydraulic system 27 l
Final transmission 14.4 l

Environment

Engine emissions Fully complies with EU Stage V
exhaust emission regulations.

Noise levels.
LwA external 85 dB(A) (2000/14/EC Stage II)
LpA operator ear 101 dB(A) (ISO 6396 dynamic test).

Vibration levels (EN 12096:1997)
Hand/arm ≤ 2.5 m/s² (uncertainty K = 1.2 m/s²)
Body ≤ 0.5 m/s² (uncertainty K = 0.2 m/s²)