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SEM518 is an 18-tonne soil compactor designed for reliable and productive work across road construction, infrastructure and site-development applications. Powered by WP6G175E20; 129 kW at 2,000 rpm, it combines a matched powertrain and vibratory system for consistent performance with 2,130 mm wide; 1,600 mm diameter; 40 mm thick.
SEM518 combines dependable compaction performance, robust systems and straightforward operation for demanding infrastructure and site-development work.
the vibe-pod design and drum construction to compaction performance.
the eccentric vibration arrangement is promoted as extending vibratory-system life by more than 50%.
a digital frequency meter and three-level alarm system monitor machine performance.
The eccentric vibe-pod design is promoted as extending system life by 50%. Steel shot moves inside a closed eccentric block to stabilize vibration amplitude, reduce motor impact and lengthen vibratory-system maintenance intervals. A fully sealed eccentric gear is intended to prevent contamination and extend bearing life.
The cooling package is described as an isolated modular system. A suction-style fan draws lower-temperature air through the radiator for cooling performance. An optional high-ambient package is presented for operation in temperatures up to 50 °C.
The closed-center hydraulic circuit is claimed to improve efficiency by 20% over an open-center system. The design is promoted as reducing oil contamination and extending hydraulic-system life. It is also described as maintaining higher pressure with lower energy loss, simplifying hose routing and allowing a smaller hydraulic tank to reduce maintenance cost.
Cat Product Link is presented as transmitting equipment information to relevant personnel in a timely way to support machine and fleet management.
The electronically controlled transmission is promoted for easier shifting, reduced operator fatigue, higher work efficiency and reliability. The axle uses a proportional-torque differential that adjusts wheel torque to ground conditions to improve traction. reports gradeability of 34%, compared with a cited competitor value of 30%.
A vibratory frequency meter continuously displays compaction frequency. The operator can select an appropriate frequency to help avoid excessive compaction. A three-level alarm system diagnoses machine issues and alerts the operator through warning lights and audible alarms.
Applications include road, railway, airfield and industrial-yard compaction. An optional diamond-pattern pad-foot roller is listed for clay soils. An optional square-pattern pad-foot roller is listed for sandy materials.
SEM518 is suited to infrastructure, public works and site-development applications where reliable soil compaction is essential.
Select a specification group to review the machine data most relevant to your application.
| Model | SEM518 |
| Engine Model | WP6G175E20 |
| Std Rated Power-Gross | 129 kW |
| Rated Speed | 2,000 rpm |
| Operating Weight | 18,000 kg |
| Fuel Tank Volume | 262 L |
| Turning Outer Radius | 6,350 mm |
| Static Pressure | 415 N/cm |
| Steering Angle | ±33° |
| Swing Angle | ±12° |
| F/R I | 2.98 km/h |
| F/R II | 5.88 km/h |
| F/R III | 9.60 km/h |
| Hydraulic Oil Tank Volume | 80 L |
| Freqency-Hi/Lo | 30/28 HZ |
| Amplitude-Hi/Lo | 2/1 mm |
| Excitation Force (High/Low) | 327/188 KN |
| Drum Width | 2,130 mm |
| Drum Diameter | 1,600 mm |
| Drum Thickness | 40 mm |
| Tyres Type | 20.5-25 |
SEM518 combines a practical standard configuration with application-focused options for demanding operating conditions.
Compare adjacent models in the SEM soil compactor range to select the right operating weight and compaction performance.
SEM510 is a 10-tonne soil compactor designed for reliable and productive work across road construction, infrastructure and site-development applications. Powered by 97.5 kW gross at 2,200 rpm, it combines a matched powertrain and vibratory system for consistent performance with 2,130 mm.
View SEM 510
Designed for demanding compaction applications, the SEM512 combines a reliable hydrostatic drive system, dual-amplitude vibration and up to 45% gradeability for productive operation across slopes and uneven terrain.
View SEM 512Tell us about your material, project and operating conditions. A Delta product specialist can recommend the appropriate configuration and support package.
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