Deere 370C 330LC 450CLC Travel Gearbox 2nd Planetary Carrier Spider With Sun Gear Assy for Excavator 1015523 4203180 3053785

This fully assembled 2nd‑stage planetary carrier, spider and sun gear unit acts as the intermediate torque‑transfer core inside travel reduction gearbox for Deere large‑frame excavators 370C, 330LC and 450CLC. Positioned between first‑stage and final‑stage gearing, this assembly undertakes intermediate deceleration and torque distribution during heavy‑duty quarry excavation, heavy material handling and high‑load earth‑moving assignments. This aftermarket replacement component is widely procured by overseas heavy‑equipment overhaul shops, rental fleet operators and cross‑border spare‑part merchants for travel gearbox intermediate‑stage rebuild and direct replacement of fatigued internal transmission parts.

Working under persistent shock torque, abrasive dust invasion and frequent forward‑reverse track shifting on rugged construction sites, the original factory assembly will suffer sun‑gear tooth chipping, spider shaft journal wear, carrier spline abrasion and enlarged gear meshing backlash. Observable failure signs include fluctuating travel speed, track offset during straight travel, continuous metallic rattling sound from final drive, abnormal heat buildup of travel gearbox housing, and track power loss under heavy digging resistance. Once this second‑stage planetary assembly fails, the whole travel reducer will lose normal deceleration performance and trigger costly machine downtime for infrastructure and mining projects.

Our aftermarket assembly strictly implements OEM dimensional benchmarks for mounting interface, spider shaft concentricity, gear tooth profile and spline tolerance. No cutting, welding or custom adapter modification is required during gearbox reassembly. As a viable cost‑effective substitute for high‑priced original OEM spare parts with long procurement lead‑times, this unit delivers steady intermediate‑stage torque distribution and satisfies bulk‑order purchasing demands for global Deere heavy‑excavator spare‑part distributors.

1. Precise dimensional interchangeability matching original travel gearbox intermediate structure Manufactured strictly following OEM technical drawing standards, this whole assembly maintains matched gear modulus, spider shaft dimension and spline precision. Carefully machined mating surfaces guarantee smooth gear meshing after installation. No secondary on‑site machining work is needed during gearbox reassembly, allowing service technicians to complete multi‑stage final‑drive overhaul efficiently.
2. Optimized anti‑wear craftsmanship for intermediate‑stage heavy‑impact operating environment Many low‑cost alternative second‑stage carrier assemblies bring about premature spider shaft bending and gear tooth pitting under frequent quarry‑site shock loads. Our key stress‑bearing components adopt integral forging plus deep carburizing quenching treatment to strengthen comprehensive durability, helping fleet operators cut down replacement frequency for heavily‑utilized 370C, 330LC and 450CLC excavators.
3. Multi‑item strict factory inspection prior to shipment to avoid intermediate‑stage premature failure Each finished assembly undergoes gear tooth appearance inspection, spline dimensional verification and gear‑meshing backlash testing before packing. Defective workpieces are screened out at factory end, reducing re‑work risks for maintenance crews and preventing unexpected costly machine stand‑still on construction and mining sites.
4. Practical aftermarket solution for large‑size excavator overhaul budget optimization Genuine OEM second‑stage planetary carrier assemblies for these Deere heavy‑duty models carry high procurement cost and unstable supply cycles. Our factory‑direct aftermarket unit provides reliable intermediate‑stage torque‑transfer stability and full system compatibility, decreasing annual repair outlay for customers managing multiple heavy‑excavator fleets.
5. Versatile global logistics support for wholesale purchasers In‑stock goods support prompt shipment after payment confirmation. Air freight service is available for urgent jobsite breakdown repair orders; consolidated sea freight and full‑container options deliver cost‑saving selections for long‑term bulk importers of heavy‑construction‑equipment spare parts.

Our manufacturing workshop concentrates on R&D and mass‑volume production of multi‑stage travel gearbox spare parts, including 1st, 2nd, 3rd‑stage planetary carrier assemblies, sun gears and planet gears for various large‑tonnage excavator brands. We possess complete production workflows: alloy‑steel forging, professional heat‑treatment, CNC gear‑tooth grinding and multi‑dimensional strict inspection. Specialized gear‑meshing simulation test equipment replicates real‑world variable heavy‑impact working conditions of large excavators to validate intermediate‑stage component service life. Our final‑drive transmission spare parts are exported to multiple overseas regions and keep long‑term stable cooperative relationships with global heavy‑machinery spare‑part wholesalers.

Q1: Can this 2nd‑stage carrier assembly fit other Deere excavator models besides 370C, 330LC and 450CLC? A1: Cross‑model fitment is not recommended. Different travel gearbox assemblies differ in gear modulus, spider shaft size and spline specifications. Please double‑verify machine model and original part number before submitting orders.

Q2: What gearbox malfunctions can this assembly resolve? A2: It fixes failures triggered by worn sun gear, pitted gear teeth, deformed spider shaft and damaged splines: abnormal rattling noise inside travel gearbox, travel speed fluctuation, track offset and final‑drive housing overheating.

Q3: Is volume‑based tiered discount available for bulk‑quantity orders? A3: Yes, preferential pricing is offered subject to purchase quantity. Full‑container sea shipment can be arranged to lower comprehensive logistics expenditure.

Q4: What packaging measure is adopted for long‑distance overseas transportation? A4: Anti‑rust protective oil is evenly coated over all gear and spline surfaces. The complete assembly is wrapped with waterproof shock‑absorbing PE film, then secured inside reinforced export‑grade plywood case, protecting components against collision deformation and rust corrosion during long‑haul ocean transit.