Together with the track frame, track rollers, drive sprockets, and guide wheels, the Combine Harvester Track Guide forms the chassis running system of tracked combine harvesters. The condition of the track guide directly affects the service life of the track system and the overall operational stability of the machine. Maikeyier manufactures and supplies track guides in four mainstream materials: NM400 wear-resistant steel, 65Mn hardened spring steel, 40Cr alloy steel, and QT600-3 ductile cast iron – covering the full range from economy, standard, to heavy-duty wear-resistant grades. These guides are compatible with mainstream harvester brands such as Kubota, Yanmar, World, and Lovol.
NM400 / 65Mn / 40Cr / QT600-3
Inner Guide / Outer Guide/ Center Guide
Front Guide and Rear Guide
Inner Guide / Outer Guide/ Center Guide
Front Guide and Rear Guide
Combine Harvester Track Guide Benefits
The Combine Harvester Track Guide is a guiding component in the track / running chassis system. For a harvester track to run properly, a track guide is essential to constrain lateral movement – otherwise, derailment will occur. High-quality track guides can reduce track misalignment incidents by over 85% and extend rubber track service life by 30-50%.
| Function | Description |
| Track guidance and derailment prevention | Constrains the rubber track within the correct running path, preventing lateral deviation and derailment during forward travel, turning, and slope operations |
| Lateral load bearing and impact absorption | Withstands side forces during turning and slope operations, distributing loads to the chassis frame |
| Wear resistance and shape retention | High surface hardness and wear-resistant materials ensure that the guide maintains dimensional accuracy in abrasive environments with mud, sand, and rice stubble |
Combine Harvester Track Guide Classification
Combine Harvester Track Guides can be classified by installation position or by structural type. Those installed at the front of the chassis are Front Guides; those at the rear are Rear Guides. In relation to the track, they can be divided into Inner Guide, Outer Guide, and Center Guide.
Front Guide / Rear Guide
| Type | Installation Position | Functional Features |
| Front Guide | Installed at the front of the running chassis, near the header; wear is concentrated at the front entry point | Guides the track into the drive sprocket area; bears tractive forces during starting and forward travel |
| Rear Guide | Installed at the rear of the running chassis, near the grain tank; wear is concentrated on the outer guide surface | Guides the track away from the drive sprocket area; bears lateral forces during turning and reversing |
Inner Guide / Outer Guide / Center Guide
| Type | Installation Position | Applicable Track System |
| Inner Guide | Installed on the inner side of the track running path (near the chassis frame) | Inner/outer dual-guide system; constrains inward track deviation |
| Outer Guide | Installed on the outer side of the track running path (away from the chassis frame) | Inner/outer dual-guide system; constrains outward track deviation; bears higher lateral loads |
| Center Guide | Installed at the center of the track running path | Center-guided track system; track has a center guide lug that meshes with the guide |
Common Model Guide Configuration Reference
| Brand / Model | Front | Rear | Remarks |
| Kubota DC70 | Front inner + front outer (1 each) | Rear inner + rear outer (1 each) | Four-guide configuration; inner/outer pairs |
| Yanmar AW70V | Front inner + front outer (1 each) | Rear inner + rear outer (1 each) | Four-guide configuration |
| World 4LZ-6.0 | Front inner + front outer (1 each) | Rear inner + rear outer (1 each) | Four-guide configuration |
| Center-guided track system | Front center guide (1) | Rear center guide (1) | Dual-guide configuration |
Combine Harvester Track Guide for Sale
Maikeyier Combine Harvester Track Guides are available in four mainstream materials, each offering different performance characteristics, specifications, and application scenarios. Our forging plant produces track guides, and we also supply OEM parts for brand harvesters.
Materials
The service life of track guides made from different materials ranges from 600 to 2,500 hours, allowing you to choose based on your actual needs.
NM400 Wear-Resistant Steel (High-End Wear-Resistant Grade)
| Item | Description |
| Material properties | High-end wear-resistant steel; typical surface hardness HB 360-420; excellent wear resistance; good weldability and formability |
| Standard specifications | Thickness 8mm/10mm/12mm/15mm; height 40mm/50mm/60mm/75mm; length per machine drawings; pre-drilled mounting holes or weld-on type |
| Replacement compatibility | Suitable for high-power tracked harvesters; ideal for sandy soils, heavy mud, and long-term high-intensity operations |
| Maikeyier process | Precision plasma cutting + CNC bending + bevel machining |
65Mn Hardened Spring Steel (Standard Universal Grade)
| Item | Description |
| Material properties | Industrial-grade spring steel; high-frequency hardened; surface hardness HRC 52-58; core toughened; excellent balance of wear resistance and impact toughness |
| Standard specifications | Thickness 8mm/10mm/12mm; height 40mm/50mm/60mm; length customizable per model; bolt-on type |
| Replacement compatibility | Suitable for conventional paddy field operations and general harvesting conditions |
| Maikeyier process | High-frequency induction hardening on guide surface; hardened layer depth 1.5-3.0mm; uniform hardness |
40Cr Alloy Steel (Heavy-Duty Reinforced Grade)
| Item | Description |
| Material properties | Chromium alloy structural steel; high hardenability; excellent strength and toughness after quenching and tempering; outstanding fatigue resistance under alternating lateral impact loads; dedicated material for heavy-duty reinforced applications |
| Standard specifications | Full size availability; customizable thickness and height; reinforced cross-section with reinforced mounting flanges |
| Replacement compatibility | Suitable for heavy machines, slope operations, and high lateral load conditions |
| Maikeyier process | Quenching and tempering; optional surface induction hardening; dedicated alloy steel production line ensuring consistent mechanical properties |
QT600-3 Ductile Cast Iron (Cast Special-Shape Grade)
| Item | Description |
| Material properties | As-cast ductile cast iron; tensile strength ≥600MPa; excellent vibration damping; good wear resistance; capable of casting complex guide profiles |
| Standard specifications | Straight blocks, L-shaped guides, curved guides, and other special shapes; fully customizable |
| Replacement compatibility | Replaces cast guide blocks in track undercarriage systems; suitable for positions requiring complex geometries and vibration absorption |
| Maikeyier process | Precision casting; controlled nodularization; machined guide surfaces; each batch tested for tensile strength and hardness before shipment |
Quick Material Selection Table
| Comparison Dimension | NM400 | 65Mn | 40Cr | QT600-3 |
| Surface hardness | HB 360-420 | HRC 52-58 | HRC 48-54 | HB 180-240 |
| Wear resistance | ★★★★★ | ★★★★ | ★★★★ | ★★★ |
| Impact toughness | ★★★★ | ★★★★★ | ★★★★★ | ★★★ |
| Service life | 3-5 seasons | 2-3 seasons | 2-3 seasons | 1-2 seasons |
| Price positioning | High-end | Mid-range | Mid-to-high | Mid-range |
| Recommended scenario | Sandy soils, high-abrasion environments | Conventional paddy fields, standard conditions | Heavy machines, slope operations | Cast special-shape guide blocks |
Dimensions and Process Parameters
Height Specifications (Select by Model)
| Height | Description | Recommended Application |
| 40mm | Compact | Small tracked rice harvesters |
| 50mm | Standard universal | Most widely used; fits most medium tracked models |
| 60mm | Kubota/Yanmar specific | Original size for Japanese tracked harvesters |
| 75mm | Extra-height reinforced | Large harvesters, heavy machines |
Thickness Specifications
| Thickness | Description | Recommended Application |
| 8mm | Standard | Conventional paddy field operations |
| 10mm | Reinforced universal | Most commonly used specification |
| 12mm | Heavy-duty | Heavy machines, sandy soils |
| 15mm | Extra-heavy-duty | Large harvesters, extreme abrasion environments |
General Structural Parameters
- Mounting method: Bolt-on (most common) or weld-on (heavy-duty applications)
- Mounting holes: Standard M10/M12 bolt holes; customizable per model
- Guide surface hardness: HRC 48-58 (hardened materials) or HB 360-420 (NM400)
- Straightness tolerance: 0.3mm per meter of length
- Surface roughness: Guide surface Ra 3.2
- Machining accuracy: Within ±0.15mm
Surface Treatment Processes
| Process | Wear / Rust Protection | Recommended Scenario |
| High-frequency hardening | HRC 52-58 on guide surface | Standard treatment for 65Mn/40Cr materials |
| Hardfacing | 2-4mm wear-resistant layer | Sandy soils, high-abrasion conditions |
| Induction hardening (full profile) | HRC 50-55 | Heavy-duty guides for large harvesters |
| Blackening / anti-rust oil | Basic corrosion protection | Inland dry operations, short-term storage |
| Primer + topcoat | Corrosion protection during transport | Long-distance sea freight |
Maikeyier – Combine Harvester Track Guide Supplier
With over a decade of experience in agricultural parts production and export, Maikeyier supplies harvester parts to agricultural aftermarkets in Southeast Asia, South Asia, South America, Africa, and many other countries and regions. Our “factory + supply chain” model has provided one-stop services to customers in more than 25 countries.
Production Process
Maikeyier has established a full-chain quality control system for track guides. Every Combine Harvester Track Guide undergoes trial assembly verification before shipment to ensure dimensional accuracy and installation compatibility.
| Stage | Inspection Item | Equipment / Method |
| Incoming material inspection | Chemical composition analysis | Spectrographic analyzer; batch sampling |
| Cutting and forming | Dimensional accuracy, surface defects | Precision cutting dies + 100% visual inspection |
| CNC machining | Mounting hole accuracy, contour dimensions | CMM (Coordinate Measuring Machine); tolerance ±0.15mm |
| Heat treatment | Surface hardness, hardened layer depth | Rockwell hardness tester + metallographic inspection |
| Surface treatment | Coating / hardened layer quality | Coating thickness gauge; hardness sampling |
| Assembly inspection | Installation fit, guide surface finish | Trial fit with original track system |
| Finished product inspection | Full dimension verification, hardness sampling | Batch sampling per ISO 2859-1 |
| Shipment | Batch consistency, packaging integrity | Each batch retains inspection report |
Maikeyier Factory Core Capabilities
Maikeyier is a comprehensive agricultural parts factory with forging, casting, and machining capabilities at its core, possessing end-to-end production capabilities from raw material procurement, cutting, forming, heat treatment, and surface treatment to finished product inspection.
| Capability Module | Description |
| Material supply chain | Direct sourcing of NM400, 65Mn, 40Cr, QT600-3, and other materials |
| Cutting and forming equipment | CNC plasma cutters, bending machines, CNC pipe benders for high-precision profile cutting and forming |
| Machining equipment | CNC lathes, milling machines, drilling centers, surface grinders for mounting hole drilling, beveling, and guide surface finishing |
| Heat treatment line | High-frequency induction hardening equipment and tempering furnaces ensuring optimal balance of guide surface hardness and toughness |
| Surface treatment partnerships | Deep cooperation with hardfacing, induction hardening, coating, and other process partners |
| Quality inspection | Hardness testers, ultrasonic flaw detectors, dimensional measuring tools, straightness gauges, etc. |
| Production capacity | Ample monthly capacity for conventional guide specifications |
Combine Harvester Track Guide Compatible Models
Maikeyier primarily serves four major harvester brands. Our warehouse maintains stock of complete machine parts for popular models of Kubota, Yanmar, Lovol, and World harvesters.
| Brand | Compatible Models |
| Kubota | DC70, DC105, PRO series, AR series, R series, SR series tracked models |
| Yanmar | AW70V, AW82V, AG series, CA series, CE series, YH series tracked models |
| FMWorld (World) | 4LZ series, RG series, AH series tracked models |
| Lovol | RG series, 4LZ series tracked models |
| Other brands | Suitable for most tracked rice and wheat combine harvesters |
Packaging and Procurement Information
| Item | Description |
| Packaging | Anti-rust oil coating + moisture-proof film wrapping + export wooden crates or pallets; crush-proof and shock-resistant |
| Minimum Order Quantity (MOQ) | 100PCS for conventional specifications; supports mixed lots of multiple materials and specifications |
| Customization services | Customizable by material, height, thickness, mounting hole positions, surface finish, and special specifications |
| Delivery time | 15-25 working days for conventional specifications |
| Sample policy | Sample orders supported; can convert to bulk orders after customer verification |
FAQ – Combine Harvester Track Guide
How to choose the right material for Combine Harvester Track Guides?
For conventional paddy field operations, 65Mn hardened spring steel is recommended for the best balance of wear resistance and cost-performance. For high-abrasion environments such as sandy soils, NM400 wear-resistant steel is preferred. For heavy machines and high lateral loads, choose 40Cr alloy steel. For complex-shape cast guide blocks, choose QT600-3 ductile cast iron. For selection assistance, contact Maikeyier for targeted recommendations.
What is the difference between Front Guides and Rear Guides?
Front Guides are installed at the front of the chassis (near the header), responsible for guiding the track into the drive sprocket area and more susceptible to impact and friction during forward operation. Rear Guides are installed at the rear of the chassis (near the grain tank), responsible for guiding the track away from the drive sprocket area and more susceptible to lateral wear during turning. They have different wear patterns; confirm the specific position when ordering.
Can Inner Guides and Outer Guides be used interchangeably?
No. Inner and Outer Guides are designed with different load-bearing characteristics; outer guides typically withstand higher lateral loads during turning and slope operations. Incorrect installation leads to asymmetric guidance, uneven wear, and derailment risk. Always confirm the installation position before installation.
How do I know when the track guide needs replacement?
Replace the guide when: ① guide surface wear depth exceeds 2mm; ② visible deformation or cracks appear; ③ track misalignment or frequent derailment occurs during operation; ④ abnormal noise from the chassis during travel. It is generally recommended to inspect guide condition before each season.
What is the difference between NM400 and 65Mn hardened track guides?
NM400 is a wear-resistant steel with surface hardness HB 360-420, offering excellent wear resistance without heat treatment – suitable for high-abrasion sandy environments. 65Mn achieves HRC 52-58 after hardening, with higher hardness and the preferred choice for conventional paddy field conditions. Their service life differs significantly – NM400 can last 3-5 harvest seasons under the same conditions, while 65Mn typically lasts 2-3 seasons.
Can Maikeyier track guides directly replace original guides?
Yes. All specifications and dimensions are matched to original standards – no drilling, cutting, or modification needed. Direct bolt-on or weld-on replacement with high compatibility, perfectly replacing expensive original parts.
What is the MOQ for Maikeyier track guides? Do you support mixed lots?
The MOQ for conventional specifications is 100PCS. Mixed-lot orders with different materials and specifications are supported. For example: 50PCS of 65Mn front inner guide 50mm×10mm + 50PCS of NM400 rear outer guide 60mm×12mm can be combined into one order. Please contact us for a detailed quotation.
Whether you need NM400 wear-resistant steel guides, 65Mn hardened spring steel standard guides, 40Cr alloy steel heavy-duty guides, or QT600-3 ductile cast iron special-shape guides; whether you need Front Guides or Rear Guides – Maikeyier can provide you with high-quality, cost-effective Combine Harvester Track Guide solutions. Leave your requirements list with us for a free quote!
