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A Compact Machine with Full-Sized Ambitions
The Kobelco 135SR LC is a short-radius excavator designed for contractors who need power and reach in confined spaces. With an operating weight of around 31,000 lbs and an engine output of approximately 90 horsepower, it balances maneuverability with digging strength. Its compact tail swing makes it ideal for urban projects, roadside work, and farm applications where space is limited but productivity is still critical.
Design and Engineering Background
Kobelco, a Japanese manufacturer with roots dating back to 1930, has long specialized in hydraulic excavators. The “SR” designation stands for Short Radius, a design philosophy that reduces tail overhang without sacrificing stability. The 135SR LC was introduced in the early 2000s as part of Kobelco’s mid-sized lineup, positioned between the smaller 115SR and larger 210 models. While the 115SR often came with a blade for grading, the 135SR LC featured a longer track frame and stick, giving it more reach and stability.
Terminology Clarification
Operators generally praise the 135SR LC for its reliability and versatility. It is well-suited for tasks such as:
Limitations and Considerations
Despite its strengths, the 135SR LC is not without drawbacks:
One contractor in Pennsylvania reported using the 135SR LC for culvert installation on rural roads, noting that the short tail swing allowed work in ditches without blocking traffic. Another operator in Georgia mentioned that while the machine lacked the raw power of a Deere 120D, it was dependable and economical for clearing stumps and general dirt work. In Canada, a fleet manager compared the breakout force of a Kobelco 260SRLC favorably against a rented Caterpillar 329E, showing that Kobelco’s hydraulic systems can compete with larger machines when properly matched to the task.
Conclusion
The Kobelco 135SR LC is a capable, compact excavator that delivers reliable performance for general construction, farm work, and municipal projects. While it may not match the refinement of some competitors in hydraulic smoothness, its durability, reach, and short-radius design make it a valuable choice for operators who need versatility in tight spaces. With proper maintenance and realistic expectations, it remains a dependable workhorse in the mid-size excavator class.
The Kobelco 135SR LC is a short-radius excavator designed for contractors who need power and reach in confined spaces. With an operating weight of around 31,000 lbs and an engine output of approximately 90 horsepower, it balances maneuverability with digging strength. Its compact tail swing makes it ideal for urban projects, roadside work, and farm applications where space is limited but productivity is still critical.
Design and Engineering Background
Kobelco, a Japanese manufacturer with roots dating back to 1930, has long specialized in hydraulic excavators. The “SR” designation stands for Short Radius, a design philosophy that reduces tail overhang without sacrificing stability. The 135SR LC was introduced in the early 2000s as part of Kobelco’s mid-sized lineup, positioned between the smaller 115SR and larger 210 models. While the 115SR often came with a blade for grading, the 135SR LC featured a longer track frame and stick, giving it more reach and stability.
Terminology Clarification
- Zero/Short Tail Swing: A design where the counterweight does not extend far beyond the tracks, reducing the risk of striking obstacles.
- Breakout Force: The maximum digging force applied at the bucket tip, a key measure of excavator performance.
- Hydraulic Line Routing: The placement of hoses and fittings within the machine; compact designs often make replacements more difficult.
- LC (Long Carriage): Refers to an extended undercarriage that improves stability during digging and lifting.
Operators generally praise the 135SR LC for its reliability and versatility. It is well-suited for tasks such as:
- Digging stumps and clearing land
- Installing culverts and drainage systems
- General farm and construction dirt work
- Roadside excavation where space is restricted
Limitations and Considerations
Despite its strengths, the 135SR LC is not without drawbacks:
- Hydraulic line replacement can be challenging due to the compact zero-tail design. Accessing fittings inside the machine requires more labor than on conventional excavators.
- Some operators note that hydraulic smoothness and power are not as refined as on Caterpillar or Deere models in the same class.
- For heavy-duty applications requiring maximum breakout force, larger models like the Kobelco 260SRLC or Caterpillar 329E may be more suitable.
- John Deere 120D: Often considered smoother in operation, with strong dealer support in North America.
- Caterpillar 312/315 Series: Known for refined hydraulics and operator comfort, though typically at a higher purchase price.
- Hitachi ZX135: Offers excellent hydraulic precision, often favored for fine grading and utility work.
- Inspect hydraulic hoses and fittings regularly, especially in confined routing areas.
- Consider the machine’s intended use—while excellent for general excavation, it may not be the best choice for continuous heavy rock work.
- Factor in dealer support and parts availability, as service networks vary by region.
- For farm or municipal use, the 135SR LC offers a strong balance of size, reach, and cost-effectiveness.
One contractor in Pennsylvania reported using the 135SR LC for culvert installation on rural roads, noting that the short tail swing allowed work in ditches without blocking traffic. Another operator in Georgia mentioned that while the machine lacked the raw power of a Deere 120D, it was dependable and economical for clearing stumps and general dirt work. In Canada, a fleet manager compared the breakout force of a Kobelco 260SRLC favorably against a rented Caterpillar 329E, showing that Kobelco’s hydraulic systems can compete with larger machines when properly matched to the task.
Conclusion
The Kobelco 135SR LC is a capable, compact excavator that delivers reliable performance for general construction, farm work, and municipal projects. While it may not match the refinement of some competitors in hydraulic smoothness, its durability, reach, and short-radius design make it a valuable choice for operators who need versatility in tight spaces. With proper maintenance and realistic expectations, it remains a dependable workhorse in the mid-size excavator class.
