STG135A Triple Grouser Track Shoe 135mm Pitch 23MnB Boron Alloy Steel for PC60 Mini Excavator Undercarriage Plate

Product Overview

The STG135A Triple Grouser Track Shoe is a precision-forged undercarriage component designed for mini excavators in the 5-7 ton class. With a compact 135mm pitch and 750mm width, this track shoe delivers the ideal combination of traction and surface protection for urban construction and landscaping applications. Manufactured from 23MnB boron alloy steel through a controlled hot forging process, each shoe achieves consistent dimensional accuracy (±0.3mm on bolt hole positions) for trouble-free installation. The triple grouser profile ensures smooth operation with reduced vibration, making it the preferred choice for operators working on paved or finished surfaces.

Key Features

• Mini Excavator Optimized: Compact 135mm pitch and 750mm width designed for PC60 class excavators and other mini crawler equipment
• Triple Grouser Smooth Ride: Three low-profile grouser bars providing comfortable operation with minimal vibration on hard surfaces
• Precision Forged 23MnB: Small-part precision die forging with tight dimensional tolerances for consistent fit on mini excavator track chains
• Lightweight Design: Optimized weight without compromising structural strength, reducing overall undercarriage system load

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

Compatible with PC60, PC60-7, PC60-8, and similar 6-ton class excavators. Ideal for landscaping, utility work, urban construction, trenching, and small-scale earthmoving.

Frequently Asked Questions

Q1: What mini excavator brands does this fit?

The STG135A track shoe with 135mm pitch fits Komatsu PC60 series, CAT 306, Hitachi EX60, Kobelco SK60, and other 5-7 ton class excavators. Always verify your machine's pitch measurement before ordering.

Q2: Can I order just a few replacement shoes?

Yes, minimum order is 20 pieces, but we can supply partial track shoe sets. For emergency replacements, we also offer express air freight shipping options.

Q3: Are rubber pads available for these shoes?

Yes, we offer bolt-on rubber pads for triple grouser track shoes to protect paved surfaces. Rubber pads are available as a separate accessory item.