Used Kobelco SK135SR Excavator | High Quality Second Hand Excavator for Sale

The SK135SR is a flagship model in the Short Rear Swing category, featuring a tail swing radius of only 1,490 mm. This allows the operator to rotate the machine 360 degrees within a single traffic lane or right next to a wall without the risk of rear-end collisions. For contractors buying used equipment, this design significantly opens up more job opportunities in residential landscaping, road widening, and underground utility repairs where a standard tail machine simply cannot fit.

Like its larger siblings, the SK135SR features Kobelco’s iNDr (Integrated Noise and Dust Reduction Cooling System). This system acts as a high-tech “wind tunnel” that filters incoming air through a high-density mesh, reducing external noise to as low as 93 dB. For a second-hand buyer, this means the radiator and oil cooler are much less likely to be clogged with debris, extending the service life of the Isuzu 4JJ1X engine and ensuring the machine remains “neighbor-friendly” for night-shift urban work.

The SK135SR is powered by a 71 kW (95 hp) engine and utilizes a high-efficiency hydraulic system with a maximum flow of 2 x 130 L/min. Data from fleet operations shows that in Eco-mode, the machine can save up to 25% more fuel compared to previous generations, averaging a burn rate of 7 to 9 liters per hour during standard utility work. Despite its compact size, it delivers a bucket digging force of 90.1 kN, providing the “muscle” needed for heavy trenching in compacted soil.

Kobelco compensates for the short tail by extending the crawler length. Most high-quality used units from China are the LC (Long Crawler) version, which provides a wider and longer footprint for better balance. The machine maintains a side-lift capacity of approximately 2,500 kg at a 6-meter reach, which is comparable to many standard-tail 13-ton machines. This makes it safe and efficient for handling trench boxes, concrete pipes, or heavy landscaping stones.

When sourcing this model from the used market, focus on these three critical areas:

• iNDr Filter Condition: If the mesh filter is missing or damaged, check the radiator fins for deep-seated dirt that could cause overheating.

• Swing Motor & Ring Gear: Since this machine is designed for constant rotation in tight spots, listen for any “clicking” sounds that might indicate wear in the swing bearing.

• ITCS Monitor Logic: Ensure the Intelligent Total Control System is responsive; you should be able to switch between H, S, and Eco modes with immediate changes in engine RPM and hydraulic feedback.

• Hydraulic Drift: Test the boom and arm for “creep”; a well-maintained Kobelco valve bank should hold its position with minimal drift over a 10-minute period.