Komatsu Excavator Final Drive gearbox Assembly for PC1250

Place of Origin	China/Japan
Brand Name	LIRACE/Komatsu
Model Number	Komatsu PC1250
Minimum Order Quantity	1 PCS
Price	Negotiable price
Packaging Details	Wooden case or as required
Delivery Time	5-8 Weekdays
Payment Terms	Western Union,T/T
Supply Ability	300pcs /Month

Basic Parameters & Introduction

The Komatsu Excavator Final Drive Gearbox Assembly for PC1250 is a heavy-duty travel reducer engineered for extreme mining, quarrying, and large-scale earthmoving applications, delivering exceptional torque output and reliable undercarriage propulsion. Designed as a direct-fit replacement, this robust travel gearbox assembly weighs approximately 1,850 kg and measures roughly 1300 x 1100 x 1150 mm, ensuring maximum structural durability under severe operating conditions. It is fully compatible with Komatsu PC1250-7, PC1250-8, PC1250LC-8, and PC1250SP-8 crawler excavators. Common interchangeable OEM part numbers include 21W-27-11110, 21W-27-11120, 21N-27-11110, and 21N-27-11120. Manufactured with precision-machined planetary gears, heavy-duty bearings, and reinforced cast housing, this final drive assembly guarantees optimal hydraulic power transmission, extended service life, and significantly reduced machine downtime for your mining fleet.

Maintenance Tips

Proper maintenance of the Komatsu PC1250 Excavator Final Drive Gearbox Assembly is critical for maximizing uptime and undercarriage reliability in severe mining environments. Begin every service interval by parking the machine on level ground, lowering the bucket, and safely releasing internal crankcase pressure before removing the filler plug. Inspect the gear oil level every 250 operating hours, and perform a complete oil drain-and-fill using manufacturer-approved heavy-duty gear lubricant after the first 500 hours, then every 2,000 hours thereafter. Routinely clear packed mud, rocks, and abrasive debris from the travel gearbox housing and sprockets to prevent premature wear on the critical floating duo-cone seals. Verify all mounting bolts for proper torque retention and visually inspect seal surfaces for any signs of leakage or metallic contamination. Monitor travel performance for abnormal grinding noises or vibrations, which indicate internal planetary gear distress. Always utilize genuine Komatsu replacement seals and strictly adhere to the official PC1250 maintenance schedule to protect your heavy equipment investment.

Installation Tips

Installing the Komatsu PC1250 Excavator Final Drive Gearbox Assembly demands strict safety compliance and precise mechanical procedures due to its massive weight and critical role in undercarriage propulsion. Begin by positioning the excavator on firm, level ground, fully lowering the work equipment, shutting off the engine, and relieving all residual hydraulic pressure from the travel circuit. Use a certified heavy-lift crane rated well above the assembly weight to safely hoist and maneuver the gearbox into position. Thoroughly clean the track frame mounting surface and hub interface, removing all dirt, old gasket residue, and metal debris to guarantee a flawless seal. Carefully align the splined shaft with the hydraulic travel motor input port, ensuring smooth engagement without forced insertion that could damage precision planetary gears. Install all high-strength mounting bolts in a cross-pattern sequence and torque them to Komatsu's exact factory specifications using a calibrated torque wrench. Reconnect all hydraulic hoses with contamination-free fittings and refill the gearbox with approved heavy-duty gear oil. Conduct a low-speed bidirectional travel test while monitoring closely for oil leaks, unusual vibrations, or abnormal gear noises. Always use genuine Komatsu seals and hardware to preserve warranty and long-term field reliability.

Brand	japan/China	Brand Name	LIRACE/Komatsu
Model	PC1250	Product Name	Final Drive gearbox Assembly
Part Number	21N-27-00100	ApplicableBrand	Komatsu
Warranty Period	6-12 months	Condition	NEW
Standard or Non-standard	Standard Type	Guarantee	We will inspect the products and send detailed pictures to the buyer for confirmation.
Applicable Industries	Mechanical Repair Shops, Retail, Construction, Energy, Mining	Shipping Method	Sea freight, Air freight, DHL/FEDEX/TNT/EMS

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In November 2024, the elite team of Guangzhou Herui (XINYA) Construction Machinery Co., Ltd. made a vibrant appearance at Bauma CHINA 2024 (the 12th International Trade Fair for Construction Machinery, Building Material Machines, Mining Machines and Construction Vehicles) held in Shanghai, capturing precious group photos at the fair’s iconic location (see attached photo). As a leading supplier focused on high-quality excavator components, particularly in the hydraulic transmission field, the company fully showcased its core products: Excavator Hydraulic Pumps, Swing Motors, and Travel Motors, alongside a comprehensive range of quality accessories. At the exhibition, the company team engaged proactively in deep exchanges with global business partners, answering technical inquiries and sharing industry solutions. This appearance not only showcased the company’s professional expertise and brand image in the hydraulic market but also successfully consolidated and expanded its domestic and international market channels. Moving forward, Guangzhou Xinya (Herui) will continue to uphold the philosophy of “Quality First, Service Best,” providing superior hydraulic solutions to customers worldwide.

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21/ May

Herui (XINYA) Machinery Participated in bauma CHINA 2024 to Expand Global Excavator Parts Business

In November 2024,Herui (XINYA) Machinery participated in bauma CHINA 2024, one of the world’s leading trade fairs for construction machinery, held at the Shanghai New International Expo Centre (SNIEC). As a professional excavator parts supplier from China,Herui (XINYA) Machinery showcased a wide range of high-quality excavator spare parts, including hydraulic pumps, travel motors, swing drives, gearbox assemblies, and engine parts. Our products are widely used for Caterpillar, Komatsu, Hitachi, Volvo, Hyundai, and other major excavator brands. During the exhibition, our team welcomed customers and business partners from Europe, Russia, the Middle East, and Southeast Asia. We had productive discussions on product quality, aftermarket support, fast delivery, and long-term cooperation opportunities. bauma CHINA 2024 provided an excellent platform for Herui (XINYA) Machinery to strengthen global partnerships and demonstrate our reliable supply capabilities in the construction machinery aftermarket industry. Herui (XINYA) Machinery remains committed to providing competitive prices, professional service, and reliable excavator parts solutions to customers worldwide.

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Building Trust with Russian Customers at CTT Expo 2025

For Herui (XINYA) Machinery, CTT Expo 2025 was more than a trade show. It was an important opportunity to meet customers face to face, understand the real needs of the Russian construction machinery market, and build stronger business relationships. During the exhibition, our team communicated with customers from Russia and surrounding markets about excavator maintenance, spare parts replacement, delivery stability and long-term supply cooperation. Many customers showed strong interest in our excavator spare parts, including hydraulic pumps, filters, engine parts, seal kits, final drives, travel motors and swing motors. As a China-based excavator parts supplier, Herui (XINYA) Machinery understands that overseas customers need more than products. They need reliable quality, accurate part matching, fast response and a supplier they can trust. The meeting at CTT Expo 2025 helped us better understand local market demand and customer expectations. Herui (XINYA) Machinery will continue to support global dealers, repair workshops and construction equipment owners with dependable excavator parts solutions and professional aftermarket service.

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21/ May

2026 Q1 Excavator Export & Accessory Demand Surges

Amid global infrastructure recovery and rising key mineral demand, Q1 2026 global excavator exports rose 36.1% YoY, accounting for 46% of total sales. Authoritative data shows March exports increased 32% YoY, driving 41.3% YoY growth in core accessory demand. Hydraulic pumps, swing components, and travel components accounted for 38%, 29%, and 22% respectively. Regional demand differs significantly: African excavator exports rose 77% YoY, with 58% growth in core accessories driven by mineral projects. Oceania exports grew 50.6% (focusing on infrastructure), while 65% of European purchases are high-end durable accessories. MEA region’s CAGR exceeds 9%, with 72% demand for high-temperature and dust-proof hydraulic and travel components. We focus on the global construction machinery accessory market, specializing in hydraulic pumps, swing and travel components. Our products fit mainstream excavator models, support customization, and offer factory-direct supply with cost-effectiveness and professional after-sales/customs services for global buyers.

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What if there are quality problems with the purchased products?

Please rest assured completely. We implement strict quality control throughout the whole production process. From raw material incoming inspection to finished product delivery, all items undergo multiple rounds of rigorous technical inspection and performance testing, to fully ensure every delivered product meets 100% qualified standards. All unqualified products detected during inspection will be disposed of by centralized destruction, to firmly prevent defective goods from entering the market. Meanwhile, we provide an extended warranty period of 6 to 12 months for all products. Within the warranty period, if any non-artificial quality failure occurs, please contact us promptly. Our professional technical team will respond at the earliest time and offer targeted solutions based on actual conditions. In addition, we deliver all-round technical support to safeguard your after-sales operation. Always taking customer satisfaction as the core principle, we are committed to establishing long-term and stable cooperative partnerships with global clients.

What happens if the delivered item is unsuitable for my needs?

Please rest assured. To ensure that the products you receive fully meet your needs, we will conduct multiple rounds of demand confirmation with you before shipment, fundamentally avoiding the problem of wrong or missing delivery. To further ensure accuracy, we will first conduct precise query and verification through the product part number you provide to ensure that the product model and specifications are completely matched. If you do not have an accurate part number temporarily, we will arrange professional technicians to check and confirm one by one according to the clear product pictures and corresponding construction machinery models you provide, and communicate and synchronize with you throughout the process until confirmed correct before arranging shipment, to fully ensure that you receive the products you need and avoid unnecessary troubles.

What professional shipping and delivery standards can we provide you?

Within our international trade operations, we prioritize a high-efficiency supply chain and a transparent logistics framework. To ensure the accuracy of every shipment, a standardized PDI (Pre-Delivery Inspection) system is strictly enforced. Before the final sealing of containers, our QC specialists conduct a thorough re-examination. We provide clients with high-resolution photos of the actual items, packaging details, and the Packing List for Visual Confirmation, ensuring 100% compliance with order specifications and delivery transparency. We support versatile Incoterms, including EXW and FOB. To meet diverse delivery timelines and cost constraints, we offer a multi-modal logistics matrix ranging from Ocean Freight and Air Freight to global couriers (DHL/FEDEX/TNT/EMS). We guarantee full professional documentation support for every shipment to ensure a safe, timely, and compliant arrival at the port of destination.

We are a global one-stop supplier of excavator spare parts. We maintain full control over the entire process from R&D and manufacturing to sales, delivering top-quality excavator components to you.

Komatsu Excavator Final Drive gearbox Assembly for PC1250

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News

21/ May

Guangzhou Herui (XINYA) Impresses at Bauma CHINA 2024

21/ May

Herui (XINYA) Machinery Participated in bauma CHINA 2024 to Expand Global Excavator Parts Business

21/ May

Building Trust with Russian Customers at CTT Expo 2025

21/ May

2026 Q1 Excavator Export & Accessory Demand Surges

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What professional shipping and delivery standards can we provide you?

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