KOBELCO CK2750G Crawler Crane Track shoes

KOBELCO CK2750G crawler crane is a high-performance, multi-purpose heavy lifting equipment. Its main features are as follows:

Powerful Lifting Capacity

1. Maximum lifting weight: 275 tons, extendable to 350 tons

2. Main boom length: standard configuration 30-120 meters, maximum combined length 180 meters, suitable for ultra-high-rise lifting requirements

3. Lifting height: up to 195 meters, suitable for wind power, bridges, large steel structure installations, and other high-altitude operations

Efficient Power and Energy-Saving Technology

1. Engine: equipped with Cummins QSM11 turbocharged diesel engine, 336 kW, compliant with China IV / Euro V emission standards

2. Hydraulic system: intelligent closed-loop hydraulic system, pressure 40 MPa, flow 500 L/min, achieving millimeter-level precise control

3. Energy-saving design: dynamic power matching technology, overall fuel consumption reduced by 15%-20%, operating time up to 14 hours

Flexibility and Adaptability

1. Rapid relocation: modular design, main boom disassembly time <6 hours

2. Terrain adaptation: wide track ground pressure 0.6 kg/cm², compatible with muddy, sandy, and other complex terrains, climbing ability 30%

Undercarriage Chassis Structure

The crawler assemblies are designed with a quick-disconnect hook-and-pin feature for easy removal of individual units from axles. Crawler belt tension is adjusted with a hydraulic jack and maintained by shims between the idler block and frame.

Crawler Drive

The independent two-speed hydraulic propel drive is built into each crawler side frame. Each drive consists of a hydraulic motor driving a propeller sprocket through a planetary gearbox. The hydraulic motor and gearbox are built into the crawler side frame within the shoe width.

Track Shoes

68 shoes, 52” wide, each crawler.

Track Rollers

The track rollers are sealed for maintenance-free operation.

Upper rollers are assisted by bolt-on track wear slides.

KOBELCO CK2750G Track shoes Details:

Material	28CrMnMo, 31Mn2SiMo
Technology	Casting
Heat Treatment	Advanced Quenching and Tempering, then Surface Hardness and Deep Hardening
Brand Name	EG
Warranty	2500 Working Hours / One Year

Our casting track pads undergo quenching and tempering, followed by surface quenching. Its advantages are as follows:

Comprehensive Performance Optimization

1. Improved Toughness

Form martensite through quenching, then achieve tempered sorbite structure through high-temperature tempering, significantly improving the overall mechanical properties of the material (strength and toughness balance), reducing the risk of brittle fracture caused by internal stress concentration.

2. Improved Machinability

The structure after tempering is more suitable for subsequent machining or surface treatment.

3. Enhanced Surface Hardness

By rapidly heating the surface layer and quenching, a high-hardness martensite layer is formed (hardness can reach HRC 55-60), greatly improving wear resistance.

4. Preserved Core Toughness

The core retains the toughness from quenching and tempering, avoiding overall brittleness.

Extended Service Life

The surface quenching layer is usually 2-5mm deep, which can effectively resist abrasive wear from hard particles such as sand and ore, extending the service life of track shoes under harsh conditions such as mines and construction sites (increasing by about 30-50%).

Economic Improvement

1. Material Cost Savings

Reduce reliance on expensive alloying elements by using surface strengthening instead of overall high alloying.

2. Extended Maintenance Cycles

Reduce replacement frequency caused by wear or breakage, lowering equipment downtime and maintenance costs.

Comparison of technology parameters

Technology Process Stage	Goal	Parameters
Quenching & Tempering	Matrix Toughening	Quenching temperature 850-900℃, tempering 500-600℃
Surface Hardening	Surface hardening	Induction frequency 3-10 kHz, hardened layer depth 2-5 mm

The casting crawler track shoes achieve a ‘hard outside, tough inside’ gradient property through the composite heat treatment of quenching and tempering, followed by surface hardening.

Our KOBELCO CK2750G Track shoes Produce Process:

High Precision and Surface Quality
High Dimensional Accuracy

Aluminum alloy molds have good thermal conductivity, fast cooling speed, and controllable shrinkage, enabling more precise dimensional tolerances (up to CT6-CT7 level) and reducing subsequent machining.

Good Surface Finish

Aluminum mold surfaces can be polished to Ra 1.6-3.2μm, with fewer casting surface defects (such as porosity and sand adherence), directly lowering post-processing costs.

Improved Production Efficiency
Rapid Cooling

The high thermal conductivity of aluminum alloys (approximately 200 W/m·K) significantly shortens the solidification time of castings, reducing the production cycle per piece by 30-50% compared to sand casting, making it suitable for mass production.

Long Mold Life

Aluminum molds have better heat fatigue performance than steel molds, and under proper use, their lifespan can reach over 100,000 cycles, making them especially suitable for large-scale manufacturing of small to medium-sized track plates.

Lightweight and Energy Saving

Light Mold Weight

The density of aluminum molds is only 1/3 that of steel molds, making them easier to handle and install, and reducing operational intensity.

Low Energy Consumption

Aluminum molds require a low preheating temperature (usually 200-300°C) and can be reused, resulting in an overall energy consumption approximately 20% lower than that of sand casting.

 Kobelco Crane Undercarriage Parts’ Part No. we can produce:

GB51D01001P1	GH51D01002P1	JJ64D00001F2	24100N2427F3R
GB52D00001F1	GH52D00002F1	JD64D00006F2	2404N166C1
24100N3124F2	JL60D00015F1	JD60D00002F1	24100J4279F3
24100N3082F1	JL60D01014P1	JJ60D00007F3	2424J145
GG60D00008F1	JL60D01013P1	JJ51D01001P1	2424J236
GG60D00007P1	GK60D00002F1	JJ52D00001F3	GB60D00003F2
24100N1893F9	GK60D00003P1	JD40F00001F1	24100N798F1
2424J239	2419T1607D4	JD60D00004P1	2424J134
2419T1934	GK51D01001P2	JJ60D00005F3	GN60D00002F8
GG60D00009F2	GK64D00005F1	JJ51D01003F1	24100N2233F2
2404J215	24100Т3249А6	JJ52D00001F2	24100J1718F1
24100J1744F5	GG64D01004F3	JJ52D01002F1	GG60D00001P1
JG64D00004F5	JJ64D00001F2	JD64D01006P1	GN51D01002P2
JG64D00002F1	JD60D01002D1	JD60D000025P1	2404N412
24100N3203F1	JJ60D00002P3	GG51D01003F1	GK60D00003P3
GN64D00002F1	2419T1607	FP60D00003P1	2424J240
JJ60D00017P1	JJ60D00012F3	FP60D01001P1	GB60D00005P1
2419T1607	JJ60D00006P3	FP60D00002F1	2404N211F1
JJ64D00002F1	JD51D01001P1	2490J130F3	24100N1079F1
JJ60D00007F4	JD52D00003F1	GK60D00002F5	24100J1291F1
JJ60D00007F1	JD64D00005F1	24100N1950F1	2419T1607D4
GG60D00006F3	JD64D00004F1	24100N1661F1	24100N3272F2
GH64D01001F1	JD60D00021F1	24100N1425F2	24100N3249F6
JJ60D00014F1	JD60D00025P1	2424J133	24100N3263f2
JJ60D00021P1	JD60D00022P1	24100J2212F1	24100N3250F1
GG60D00003F2	JD60D00024F1	24100N1286F1	JD52D01001F1
GH64D00002F1	JD60D00023F1	24100J2196F2	JL60D00014P1
24100N3250F4	GK60D00001F5

FAQ:

• Do you support customization?

Yes, we often produce parts as clients’ drawing, requirements and Logo.

• How long have you been in this industry?

20+ technical team industry experience, 20+ sale and service experience.

• Do you support third-party inspection?

Yes, also welcome clients to visit our company.

• Do you have ISO or other certifications?

Yes, such as ISO 9001:2015, EG Brand, SGS Testing…