SK 125 SR 2 Kobelco excavator specs & Dimensions (2021 - 2026)

Seamless, Smooth Combined Operations

The GEOSPEC machines have inherited the various systems that make inching and combined operations easy and accurate, with further refinements that make a good thing even better. Leveling and other combined operations can be carried out with graceful ease.

The GEOSPEC Difference: Designed to Operate Effectively in Close Quarters!

The tail of the upper body extends very little past the back end of the crawlers so that the operator can concentrate on the job at hand instead of worrying about the position of the counterweight. This not only improves operating efficiency but reduces costs associated with collision damage.

Requires Less Than 3.5 m of Working Space

The compact design allows the machine to perform continuous 180° dig, swing and load operations within a working space of just 3.5 m.

Pursuing the “Three E’s”

Enhancement New hydraulic circuitry minimizes pressure loss High-efficiency, electronically controlled Common Rail Fuel Injection Engine Powerful travel and arm/bucket digging force Economy Advanced power plant that reduces fuel consumption Easy maintenance that reduces upkeep costs High structural durability and reliability that retain machine value longer Environment Newly developed iNDr technology reduces operational noise Meets the latest exhaust emissions standards Auto Idle Stop as standard equipment

NEXT-3E Technology

New Hydraulic System Rigorous inspections for pressure loss are performed on all components of the hydraulic piping, from the spool of control valve to the connectors. This regimen, combined with the use of a new, high-efficiency pump, cuts energy loss to a minimum. Next-Generation Electronic Engine Control The high-pressure, common-rail fuel-injection engine with the multiple injection system features adjustable control to maximize fuel efficiency and provide powerful low-speed torque. The result is a highly fuel-efficient engine. Total Tuning Through Advanced ITCS Control The next-generation engine control is governed by a new version of ITCS, which responds quickly to sudden changes in hydraulic load to ensure that the engine runs as efficiently as possible with a minimum of wasted output.

The GEOSPEC Difference: Rugged Durability That Ensures Long-Term Machine Value!

The air cleaner that comes standard on the SK125SR/SK135SR has a large capacity and twice the durability of previous cleaners. Also, because it’s installed behind the iNDr filter, it offers more reliable and efficient cleaning performance.

High-Grade Fuel Filter

The SK125SR/SK135SR features a high-performance filter designed specifically for common-rail engine that has 2.9 times more filtering area than previous filters.

Highly Reliable ITCS

The manufactured quality of the ITCS controller has been further upgraded, with special measures taken to protect against water and dust. Improvements have also been made in the specs of the pressure sensors, as well as anti-noise performance.

Auto Idle Stop Provided as Standard Equipment

This function saves fuel and cuts emissions by shutting down the engine automatically when the machine is on stand by. It also stops the hourmeter, which helps to retain the machine’s asset value.

Automatic Acceleration/Deceleration Function Reduces Engine Speed

Engine speed is automatically reduced when the control lever is placed in neutral, effectively saving fuel and reducing noise and exhaust emissions. The engine quickly returns to full speed when the lever is moved out of neutral.

Highly-Durable Super-fine Filter

The high-capacity hydraulic oil filter incorporates glass fiber with superior cleaning power and durability. With a replacement cycle of 1,000 hours and a construction that allows replacement of the filter elements only, it’s both highly effective and highly economical.

High-Grade Fuel Filter with Superior Filtration Performance

A new fuel filter system has been installed that can handle the most punishing conditions. It now has a pre-filter (with built-in water separator), an ultra-fine main filter, and an additional third filter, to ensure complete removal of dust and other impurities in the fuel.

The iNDr Revolution

KOBELCO has developed the revolutionary Integrated Noise and Dust Reduction Cooling System, with the engine compartment placed inside a single duct that connects the air intake to the exhaust outlet. The intake and exhaust are offset, with the holes and joints in the sections corresponding to the duct wall completely covered to reduce noise at the intake and exhaust apertures. This design, plus the generous use of insulation material inside the duct, minimizes engine noise. Also, the iNDr filter in the intake aperture prevents dust from penetrating, which not only ensures a quieter, cleaner engine, but also supports the performance of the cooling unit and enhances ease of maintenance.

iNDr Filter Improves Operational Reliability

The stainless-steel filter is extremely effective against dust, with a 60-mesh wave-type screen that removes tiny dust particles from the intake air. This not only helps to keep the cooling unit and air cleaner running in top form, but also maintains ideal heat balance.

Cooling Unit Requires No Regular Cleaning

Because the iNDr filter removes dust from the intake air, no dust gets into block the cooling components, so that no regular cleaning is necessary. The filter can be removed easily without tools and is installed in parallel with the intercooler, radiator, and oil cooler for easy access.

Mild Operating Sound

The iNDr cooling system also helps to keep the machine quiet, even at close quarters. Even the hydraulic relief valves have been designed specifically to reduce irritating noise during operation.

Comfortable “On the Ground” Maintenance

All of the components that require regular maintenance are laid out for easy access, with the control valves located on a single right-hand panel that opens and closes at a touch. Behind that, in the pump compartment, there is remote access to such components as the engine oil filter and fuel filter (with built-in water separator). On the left side are the iNDr filter, air cleaner, radiator coolant, etc. Daily maintenance can be carried out easily without the need to climb up onto the machine.

iNDr Filter Blocks Out Dust

Outside air goes directly from the intake duct through the iNDr filter for dust removal. The filter features a 60-mesh screen, which means it has sixty holes per inch both vertically and horizontally, with a wide front surface area and accordion structure that resists clogging.

Visual Checking and Easy Cleaning

When checking and cleaning the cooling system, one must deal with several different components like the radiator, oil cooler and intercooler, which all must be handled in different ways. But with the iNDr filter, there’s just one filter in one place. If it looks dirty during start-up inspection, it can be cleaned easily and quickly.

New Performance Capabilities with a Small Rear Swing

The rounded form says it all: an excavator built with a tiny rear swing for maximum maneuverability. But KOBELCO has taken this concept one step further by seeing just how much digging performance can be packed into a machine. It’s not the compact design that matters so much as the performance and functions that are actually used on site. And that’s just where the new SR Series really shines, thanks to our NEXT-3E concept. So much so, in fact, that the SK125SR/SK135SR and other members of the series bear the same Acera Geospec name as our line of full-size excavators. Thanks to key iNDr technology, we’ve realized a whole new level of quiet operation, backed by a next-generation power plant that pushes performance to extraordinary new heights. Nine years after developing groundbreaking machines with tiny rear swings, KOBELCO continues to forge ahead as the leader in the field.

Newly-designed ‘Big Cab’

The new ‘Big Cab’ has the same width and height as the cabs installed on much larger machines. With more space to the front of the operator, it feels more roomy, and the larger area of floor space means greater comfort from the feet up. The operator has plenty of space in front for easy, comfortable operation, with ample foot room.

Excellent Visibility

The wide, open view in front combines with minimized blind spots around the machine for greater onsite safety.

Wide-Access Cab Ensures Smooth Entry and Exit

The cab door is 40 mm wider than the previous models, and the control box together with the safety lock lever tilts up by a larger angle, for easy cab entry and exit.

Cab Brackets

The ACERA GEOSPEC SR series has a safety rating equivalent to FOPS level 1. In addition to the standard roof guard, optional front and head guards are available. They can be easily attached with bolts to the standard cab brackets.