9W9351 Triple Grouser Track Shoe 190mm Pitch Forged 23MnB Boron Steel for CAT Excavator Undercarriage

Product Overview

The 9W9351 Triple Grouser Track Shoe is a premium aftermarket undercarriage component engineered for Caterpillar excavators. Manufactured from 23MnB boron alloy steel through a precision hot forging process and induction hardened on the grouser surface (HRC 44-48), this track shoe delivers exceptional wear resistance and impact toughness. The triple grouser (TG) configuration ensures balanced traction and flotation across hard and mixed ground conditions. Each shoe undergoes CNC precision machining for bolt hole accuracy and is coated with anti-corrosion black paint for long-term storage and sea transport protection.

Key Features

• Triple Grouser (TG) Design: Optimized for excavator applications, providing excellent traction with minimal ground disturbance on hard and mixed terrains
• OEM Part Cross Reference: Direct replacement for Caterpillar 9W9351, compatible with CAT 320 322 325 series excavators
• Forged 23MnB Boron Steel: Induction hardened grouser surface to HRC 44-48, through-hardened core for impact resistance
• Precision Machined Bolt Holes: CNC drilled mounting holes with ±0.2mm tolerance for perfect alignment with track chain

Technical Specifications

Factory Strength

Our manufacturing facility spans over 20,000 square meters equipped with advanced forging production lines, CNC machining centers, and automated heat treatment furnaces. We operate 8 die forging hammers (1T-10T capacity), 12 CNC turning/milling machines, and 4 continuous mesh-belt quenching & tempering furnaces with precise temperature control. Annual production capacity exceeds 500,000 track shoes. Every batch undergoes rigorous quality inspection including dimensional gauging, hardness testing (HRC), ultrasonic flaw detection, and magnetic particle inspection. We hold ISO 9001:2015 and ISO 14001:2015 certifications, with SGS/Bureau Veritas third-party inspection available upon request. Our in-house metallurgical lab ensures consistent 23MnB/25MnB boron steel composition and optimal heat treatment parameters for maximum wear resistance and impact toughness.

Quality Control Process

1. Incoming raw material inspection with spectrometer analysis
2. Forging temperature monitoring and die wear inspection
3. Post-forging dimensional check on sampling basis (1 per 50 pcs)
4. Heat treatment hardness verification (HRC 40-48 on grouser surface)
5. Magnetic particle inspection for surface crack detection
6. Final dimensional inspection with go/no-go gauges
7. Anti-corrosion coating and packing inspection

Applications

Suitable for CAT 320, 322, 325, and compatible excavator models operating in construction, earthmoving, road building, and general excavation applications. Ideal for hard-packed soil, gravel, and mixed terrains.

Frequently Asked Questions

Q1: What CAT models does 9W9351 fit?

The 9W9351 track shoe is compatible with CAT 320, 320B, 320C, 322, 322B, 325, 325B series excavators. Please verify your machine's OEM part number before ordering.

Q2: Is this an OEM part or aftermarket?

This is a high-quality aftermarket replacement part manufactured to OEM specifications with forged 23MnB boron steel and induction-hardened grouser surfaces. It matches or exceeds OEM performance at 40-50% lower cost.

Q3: Can I get a sample before bulk order?

Yes, we offer 1-2 sample pieces for quality evaluation. The sample fee is refundable upon bulk order. Contact us for sample pricing and shipping options.