336D Travel Gearbox 2nd Planetary Carrier Spider With Sun Gear Assy for Excavator Parts 296-6186 296-6189 296-6194 2966186 2966189 2966194

Cross OEM Part Numbers: 296-6186, 296-6189, 296-6194, 2966186, 2966189, 2966194

This matched secondary planetary carrier and sun gear set is the core intermediate deceleration component inside 336D travel motor final drive, tailor-made exclusively for 336D large crawler excavators. As a mainstream heavy construction machine, 336D is widely used in quarry mining, mountain road cutting, large land leveling and river channel dredging. It constantly bears heavy excavation loads, steep gradient climbing torque and frequent stone impact abrasion during daily round-the-clock operation.

The second planetary set undertakes medium torque conversion between the first and third reduction stages, bearing frequent alternating torque impact when the machine starts, turns and climbs slopes. Once the carrier’s support ribs crack, sun gear teeth peel off or internal splines wear excessively, the excavator will generate obvious track speed difference between left and right sides, weak walking power, persistent sharp metal friction noise and rapid temperature rise of travel motor, which will directly interrupt construction work.

Our product strictly follows original dimensional standards for gear tooth curve, spline fit tolerance and mounting hole position. All six part numbers (hyphen and non-hyphen styles) are fully interchangeable for gearbox repair. This assembly can be directly installed on site without any cutting, drilling or reaming work, greatly lowering maintenance labor hours. Compared with original spare parts, our aftermarket unit features lower cost and sufficient stock, perfectly matching overseas second-hand equipment dealers and mine fleet clients across Africa, Southeast Asia and Central Asia.

1. Six universal OEM part numbers, 100% consistent with original size for 336D travel reducer

   All listed hyphenated and unhyphenated part codes can replace each other during maintenance, no need to distinguish different batch numbers of original parts. This planetary assembly is customized according to the internal structure of 336D travel gearbox, cannot be matched with other models like 330D or 336E. Accurate repliion of original spline clearance and gear meshing gap avoids track deviation, jitter during walking, abnormal internal noise and premature wear of matched transmission parts after installation.

2. Integral thick forging molding, outstanding wear resistance for long-term mining operation

   Ordinary cheap aftermarket planetary carriers are prone to rib fracture and tooth collapse under continuous heavy mining loads. Our one-piece thick die forging plus full-process constant temperature heat treatment significantly improves impact resistance and fatigue resistance. It can maintain stable torque output during uninterrupted heavy excavation and long-distance transfer, greatly reducing the frequency of gearbox overhaul for rental fleets and used excavator owners.

3. Double strict factory inspection procedures to avoid economic losses caused by machine shutdown

   Every finished assembly will pass two independent closed-loop inspection processes before leaving the factory. Full-size calibration detects all matching tolerances of gear surfaces and inner splines; simulated mine heavy torque aging test reproduces extreme working conditions to verify long-term transmission stability. All unqualified semi-finished products will be eliminated in advance, helping repair shops and mine operators cut loss risks from unexpected equipment downtime.

4. Cost-effective aftermarket replacement solution for large excavator fleet operators

   Original planetary spare parts have high purchase prices and long supply cycles for the widely used 336D model. Our aftermarket assembly achieves the same load-bearing capacity and service life as OEM products with factory direct wholesale prices, effectively reducing the annual maintenance budget of enterprises equipped with multiple 336D machines.

5. Multiple global logistics options for engineering machinery spare parts wholesalers

   All in-stock goods can be arranged for shipment within 3 working days after payment confirmation. Air freight channels handle urgent emergency repair orders in remote mountain mines; consolidated bulk sea freight and full-container shipments provide cost-saving bulk purchasing schemes for distributors covering Africa, Southeast Asia, the Middle East, Central Asia and Latin America.

Our production plant has more than 13 years of professional development and mass production experience in excavator walking motor planetary transmission spare parts, with planetary carrier assemblies as our core star product line. We own a complete closed-loop production system covering alloy steel die forging, 5-axis precision gear processing, constant temperature professional heat treatment and finished product heavy-load simulation testing. Self-developed heavy torque test benches simulate harsh mine and highway construction working conditions to continuously optimize product impact resistance and extend service cycle. Our planetary gear spare parts are exported to over 48 countries and regions worldwide, establishing long-term stable cooperative relations with global engineering machinery spare parts wholesalers.