21N-27-31130 Gear is a genuine Komatsu final drive ring gear designed for PC1100 and PC1250 series excavators. This large-diameter epicyclic ring gear operates within the travel reduction gearbox, meshing with planetary gears to provide final speed reduction and torque multiplication required to propel the excavator under heavy loads.
| Item | Specification |
|---|---|
| Product Name | GEAR (Final Drive Ring Gear) |
| Part Number | 21N-27-31130 |
| Brand | Komatsu |
| Machine Model | Komatsu PC1100-6, PC1250-7, PC1250-8, PC1250LC-7/8, PC1250SP-7/8, PC1250SE-7 Excavators |
| Weight | 103 kg |
| Material | High-strength alloy steel with precision gear-tooth machining and heat treatment |
| Condition | Brand New – Genuine |
| Warranty | 6 Months |
| Packaging | Standard Export Carton |
| Availability | Generally in stock |
| Origin | China |
This final drive ring gear is compatible with:
If you’re unsure whether this gear matches your machine, simply provide your machine serial number (S/N), and our technical team will verify compatibility before shipment.
The 21N-27-31130 ring gear is designed for heavy equipment operating under demanding conditions, including:
Its robust construction and precision engineering make it a reliable choice for maintaining final drive integrity in continuous production environments.
YLCM specializes in supplying genuine Komatsu parts and high-quality aftermarket alternatives to customers worldwide.
We provide:
In addition to final drive gears, we supply a full range of engine components, hydraulic parts, undercarriage parts, filters, and electrical components for Komatsu machinery.
Every ring gear is professionally packed to ensure safe international transportation.
Packaging options include:
Each unit is securely packaged to minimize transportation risks and ensure arrival in excellent condition.
We offer flexible shipping solutions to meet your project timelines:
Our logistics team will confirm the final lead time and shipping solution based on your destination.
Looking for the 21N-27-31130 GEAR for KOMATSU PC1250?
Contact YLCM today to receive:
Our experienced sales team will respond promptly with a competitive quotation and professional service tailored to your project requirements.
Q: Is this a genuine Komatsu part?
A: We supply both genuine Komatsu parts and high-quality aftermarket alternatives. Please contact us with your preference, and we will be happy to assist.
Q: How do I confirm this gear is correct for my machine?
A: To ensure perfect compatibility, please provide your machine model and serial number (S/N) to our team. This gear is designed for PC1100 and PC1250 series models. We will verify the match for you promptly.
Q: What is the warranty on this product?
A: This product comes with a standard 6-month warranty against manufacturing defects.
Q: What is the typical shipping time?
A: This item is generally in stock. The final lead time will be confirmed when we provide your official quote, based on your destination and shipping method preference.
Q: What is the function of this ring gear?
A: This ring gear operates within the travel reduction gearbox, meshing with planetary gears to provide final speed reduction and torque multiplication for propelling the excavator under heavy loads .
Q: What is the weight of this ring gear?
A: The approximate weight is 103 kg .
Q: Do you offer technical support for installation?
A: Yes, our professional technical support team is available to assist you both before and after the sale.
