SY355LC

78,264 lbs | 24' 7" Dig Depth

The SANY SY355LC is a high-powered, long-chassis excavator built for utility and transportation infrastructure, forestry, construction, and demolition. Designed for large-scale excavation, heavy material handling, and demanding terrain, this machine delivers exceptional breakout force and digging performance. The dual auxiliary circuits and quick coupler plumbing allow operators to easily switch and remove heavy attachments for transportation, ensuring greater mobility and efficiency when moving between job sites. At the core of the SY355LC is a 280 HP Cummins Stage V engine, delivering 45,861 lbf of bucket breakout force and 34,396 lbf of stick digging force. A dedicated pump for the second auxiliary rotation circuit ensures consistent hydraulic power for rotating attachments, improving precision and efficiency in material processing and demolition tasks. The positive-flow hydraulic system, 10-tool digital selection mode, and multifunction LCD monitor provide smooth, responsive control, while the ROPS-certified cab and standard rearview and right sideview cameras enhance operator comfort and visibility in high-intensity environments.

Dual Auxiliary Circuits

Long Chassis

Quick Coupler Plumbing

Standard Rearview and Blindside Cameras

2nd Auxiliary Gear Pump

10" Touchscreen Display

8 Tool Selection Modes

Air Ride Heated Seat

Cummins Engine

Features and Specifications

Technical Spec Sheet

*Based on theoretical calculation at max flow with no load. Subject to alterations.

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Boom Length	6,150 mm20' 2"
Stick (Arm) Length	––
Transport Length	10,667 mm35'
Transport Width	3,396 mm11' 2"
Transport Height	3,660 mm12'
Upper Structure Width	3,150 mm10' 4"
Cab Height	3,280 mm10' 9"
Blade Height	--
Track Width (standard shoe)	800 mm31"
Track Gauge	2,590 mm8' 6"
Ground Clearance (minimum)	550 mm2'
Tail Swing Radius	3,315 mm10' 11"
Track Length on Ground	4,140 mm13' 7"
Track Length	5,055 mm16' 7"

Operating Weight	35,500 kg78,264 lbs
Ground Pressure	60.7 kPA8.8 psi
Engine	Cummins L9 Stage V
Displacement	9.8 L598.0 in³
Net Power	––
Gross Power	209 kW280.3 HP
Hydraulics	Positive Flow System
Main Hydraulic Pump	Axial Piston Variable Displacement
Operating Flow (maximum)	560 L/min147 gal/min
Operating Pressure (maximum)	34.3 MPa4,975 psi
Auxiliary Flow*	549 L/min145 gal/min
Auxiliary Pressure	34.3 MPa4,975 psi
Travel Motor	2*Axial Piston Motor w/Parking Brake
Travel Pressure (maximum)	34.3 MPa4,975 psi
Travel Speeds (maximum)	3.4 / 5.1 km/hr2.1 / 3.2 mph
Travel Effort (maximum)	245.0 kN55,078 lbf
Grade Capability	35°
Swing Motor	Axial Piston Motor w/Swing Brake
Swing Pressure (maximum)	27.5 MPa3,989 psi
Swing Speed (maximum)	9.0 RPM
Undercarriage (standard)	Steel Track
Track Shoe Width (standard)	800 mm31"
Track Rollers (per side)	9
Carrier Rollers (per side)	2

Boom Length	6,150 mm20' 2"
Stick (Arm) Length	3,750 mm12' 4"
Maximum Digging Height	10,500 mm34' 6"
Maximum Dumping Height	7,470 mm24' 6"
Maximum Digging Depth	7,490 mm24' 7"
Maximum Vertical Wall Digging Depth	7,160 mm23' 6"
Maximum Reach at Ground Level	11,150 mm36' 7"
Minimum Swing Radius	4,370 mm14' 4"

Boom Length	6,150 mm20' 2"
Stick Length	––
Bucket Breakout Force (ISO)	204 kN45,861 lbf
Stick Digging Force (ISO)	153 kN34,396 lbf