183-8814 1838814 0R-9737 CAT Excavator Engine Crankshaft for 3508 3512 3516
Price:
USA$ 25500-31180
MOQ:
1pcs
Delivery Time:
1-15 work days
Brand:
CAT
Product Description
For 183-8814 1838814 0R-9737 CAT Excavator 3508 3512 3516 Engine Crankshaft
Specification
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Product name
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Engine Crankshaft
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Part no.
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183-8814 1838814 0R-9737
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Brand
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For CAT
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Engine model
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3508 3512 3516
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Condition
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New
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Warranty
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Discuss
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Stock
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in stock
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Packing
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Original/Neutral/Customized
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Shipping
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By Air/By Sea/According to Customer Request
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Description
The 183-8814 (including alternative models 1838814, 0R-9737) Crankshaft is the core power center of CAT 3508, 3512, 3516 series heavy-duty excavator engines. It is made of high-strength alloy forged steel through the whole process of "integral forging - multi-stage quenching and tempering - precision grinding", and serves as the core executive component for the engine to convert "reciprocating motion into rotational power". Strictly developed in accordance with CAT's original engineering drawings, the crankshaft has an overall structure including multiple sets of main journals, connecting rod journals, reinforced crank arms and integrated balance weights. Aiming at the characteristics of large displacement and high power of the 35-series engine, it adopts a streamlined reinforcement design at the journal transition, and the surface is subjected to deep nitriding hardening treatment, with dimensional accuracy controlled at the 0.003mm level. It is accurately adapted to the cylinder block crankcase of 3508/3512/3516 engines, and works in coordination with high-power piston connecting rod groups and heavy flywheels. It undertakes the core responsibilities of transmitting in-cylinder explosion pressure and driving the excavator bucket excavation and slewing mechanism operation. Widely used in ultra-heavy-duty working conditions such as mine stripping and large-scale infrastructure, it provides rigid support for the continuous and stable output of the engine.
Advantage
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Wide Model Coverage, Strong Heavy-Duty Adaptability:Accurately matches the full series of 3508 (8-cylinder), 3512 (12-cylinder), 3516 (16-cylinder) engines. The balance structure is optimized according to the power output characteristics of models with different cylinder numbers. Whether it is a 3508 excavator with medium power demand or a 3516 excavator with super high power, it can be perfectly adapted, greatly reducing the parts reserve cost of the construction unit.
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Super Strong Material Bearing, No Pressure on Impact Resistance:40CrNiMoA ultra-high strength alloy forged steel is selected, and internal impurities are removed through vacuum degassing treatment. The material density reaches 99.8%, the tensile strength exceeds 1300MPa, and the yield strength is ≥1000MPa. It can easily withstand the maximum in-cylinder explosion pressure of 18MPa of the 35-series engine, and there is no risk of deformation or fracture in ultra-heavy-duty excavation operations.
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Deep Hardening Process, Doubled Wear-Resistant Life:The journal surface adopts the composite process of "ion nitriding + mirror grinding", the depth of the hardened layer reaches 1.2-1.5mm (far exceeding the industry standard of 0.8mm), the surface hardness is increased to HV900-HV1000, and the surface finish is at the micron level. The friction coefficient with the bearing bush is reduced to below 0.05, the wear resistance is increased by 60% compared with ordinary crankshafts, and the journal wear is controlled within 0.01mm per 1000 working hours.
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Global Dynamic Balance, Excellent Operation Stability and Quietness:The balance weight layout is optimized by 3D finite element analysis, and the global balance correction is carried out by a five-axis linkage dynamic balancing machine. The balance accuracy reaches G0.4 level (unbalance ≤1g·mm/kg per 1000 revolutions). The vibration amplitude of the engine at idle speed is ≤0.15mm, which effectively reduces the impact of body resonance on the hydraulic system and cab, and reduces the noise to below 75 decibels.
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Original Factory-Level Assembly, Improved Maintenance Efficiency:All key dimensions (journal diameter, span, thrust surface parallelism) are completely consistent with CAT original parts. The fitting clearance with original main bearing bushes, connecting rod bushes and thrust bearings is controlled at 0.02-0.05mm. No reaming or grinding is required during installation, and direct in-situ assembly shortens the engine overhaul time by 30%.
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Fatigue-Resistant Structure, Suitable for Harsh Working Conditions:The transition between the crank arm and the journal is connected with a large curvature arc (R≥5mm), and the stress concentration factor is reduced to below 1.2 with the help of ultrasonic impact stress relief treatment. It can withstand 2×10^7 cycles of load without cracks through fatigue test. Under the mine working conditions of high temperature, high dust and high frequency vibration, the service life can still reach more than 25,000 working hours.
Performance
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Basic Material Performance:40CrNiMoA alloy forged steel, elongation ≥10%, section shrinkage ≥40%, impact toughness (-20℃) ≥60J/cm², excellent matching of strength and toughness.
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Journal Core Parameters:Main journal diameter φ150-180mm (adapted to models), roundness ≤0.003mm, cylindricity ≤0.003mm; connecting rod journal diameter φ120-140mm, coaxiality ≤0.008mm.
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Surface Performance Indicators:Journal surface hardness HV900-HV1000, hardened layer depth 1.2-1.5mm, surface roughness Ra≤0.1μm, friction coefficient ≤0.05.
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Dynamic Balance Precision:G0.4 level, unbalance ≤1g·mm/kg at 1000r/min, no resonance point within the engine working speed range.
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Bearing and Fatigue Performance:Maximum allowable explosion pressure 18MPa, cyclic load fatigue life ≥2×10^7 times, continuous operation without performance attenuation under rated power.
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Working Adaptation Range:Adapts to engine speed 0-2100r/min, working temperature -30℃~200℃, mechanical performance retention rate ≥95% at high temperature (200℃).
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Assembly Matching Parameters:Fitting clearance with main bearing bush 0.025-0.045mm, fitting clearance with connecting rod bush 0.03-0.05mm, thrust clearance 0.15-0.3mm, all in line with CAT original standards.
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Service Life:≥25,000 working hours under standard working conditions, ≥18,000 working hours under mine heavy-duty working conditions, which is more than 2.5 times that of ordinary crankshafts.
FAQ
Q1: When will my goods be shipped?
A: Your goods will be dispatched within 24 hours after payment confirmation.
Q2: What is the lead time?
A: We maintain sufficient stock for immediate fulfillment.
Q3: What shipping methods do you offer?
A: We ship via sea, air, or express (DHL, FedEx, TNT, UPS, EMS).
Q4: What is the delivery time?
A: Stock items take 2 to 5 days; pre-order items take 7 to 15 days. Contact us for specifics.
Q5: How can I track my shipment?
A: We will provide you with the tracking number as soon as your order is shipped.
Packing&Shipping
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Guangzhou Pinxin Engine Co., Ltd.
Location
广州市白云区大源街锦石三路33号之七三7楼D122
Contact Person
John