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Full Industry Knowledge of Rice Harvester Chain
1. Industry Introduction & Working Environment
Rice harvester chain is a specialized category of agricultural roller chain, exclusively developed for rice combine harvesters, semi-feed harvesters, rice transplanters, grain elevators and crop conveying systems. Unlike standard industrial chains that work in clean and stable conditions, rice harvester chains operate in extremely harsh farmland environments, including heavy mud, humid dew, rice straw winding, dry dust, continuous impact load and variable speed operation. Therefore, this type of chain requires higher wear resistance, impact fatigue resistance, anti-clogging performance and low elongation stability compared with ordinary transmission chains.
In the agricultural machinery industry, rice harvester chains are regarded as core vulnerable parts, because they directly determine the harvesting efficiency, machine stability and maintenance frequency during the rice harvesting season.
2. Main Functional Classification & Application Scenarios
According to different installation positions and working functions on rice harvesters, agricultural rice chains are divided into the following mainstream types:
- Feeder House Chain / Crop Feeding Chain This is the most critical and high-load chain on the whole machine. It is responsible for continuously dragging rice stalks into the threshing drum. It bears frequent shock load, straw friction and winding pressure, so it is the fastest-wearing part of the harvester. It is usually equipped with special rake teeth or attachment plates to ensure stable crop feeding.
- Grain Elevator Chain / Scraper Conveyor Chain Used for vertical lifting and conveying threshed rice grains. Equipped with rubber or iron scrapers, it transports grains from the bottom grain tank to the upper sorting cabin. It requires low elongation and high smoothness to avoid grain leakage and blockage.
- Auger Drive Chain Responsible for horizontal power transmission of grain auger and spiral delivery system. It keeps consistent running speed to ensure uniform grain transportation and prevent material accumulation.
- Thresher & Walking Drive Chain Applied in power transmission of threshing rotor, cutting table and traveling gearbox. It needs strong fatigue resistance to adapt to long-hour continuous operation.
- Rice Transplanter Precision Chain Small-pitch precision chain for seedling picking and seedling feeding of rice transplanters, featuring stable transmission, low noise and high precision.
3. Standard Series & Common Specifications
Rice harvester chains mainly adopt international agricultural chain standards, including CA series, S series, and customized attachment chains. The most commonly used pitches are 33mm, 35mm, 40mm and 415 series sizes, which are widely compatible with mainstream domestic and international harvester brands.
Most rice chains are non-standard customized chains with special attachments (teeth, rake, scraper, extended pin) rather than ordinary straight roller chains. Different attachment shapes are designed for anti-winding, anti-blocking and material conveying purposes.
4. Material & Professional Manufacturing Technology
High-quality rice harvester chains strictly select high-grade alloy steel to adapt to heavy farm load:
- Chain plate material: 40Mn, 40Cr, 42CrMo alloy steel
- Pin and bush: high-carbon alloy steel with carburizing quenching treatment
- Surface treatment: shot peening strengthening + overall quenching and tempering + blackening anti-rust treatment + final anti-rust oil immersion
This complete process greatly improves surface hardness, overall toughness, wear resistance and corrosion resistance, effectively solving common problems such as chain stretching, tooth jumping, plate breaking and rusting in farmland operation.
5. Core Performance Advantages of Qualified Rice Chain
- Ultra-low elongation rate: Stable pitch after long-term heavy load, no tooth jumping or derailment
- High impact fatigue resistance: Adapt to frequent start-stop and shock load during harvesting
- Excellent anti-winding performance: Optimized attachment structure to reduce straw entanglement and blockage
- Strong mud and corrosion resistance: Special surface treatment adapts to humid and muddy field environment
- High matching accuracy: Strict OEM size standard, perfectly replace original harvester chains
6. Common Failure Causes in Actual Operation
In seasonal rice harvesting work, chain failure is mainly caused by harsh working conditions and improper maintenance:
- Long-term friction with straw and sediment leads to pin and bush wear, causing chain elongation
- Sudden overload and crop blockage cause fatigue fracture of chain plate
- Field humidity and mud cause surface rust and accelerated aging
- Long-term lack of lubrication leads to dry wear and shortened service life
- Improper installation and misalignment cause unilateral wear and derailment
7. Professional Maintenance & Replacement Standard
To extend the service life of rice harvester chains and ensure harvesting efficiency, standardized maintenance is essential:
- Clean surface straw, mud and dust completely after daily operation
- Regularly apply special agricultural chain lubricating oil to reduce internal friction
- Check chain tightness and elongation regularly; replace in time when exceeding the standard
- Replace chains and sprockets in pairs to avoid uneven wear
- Store the machine in dry and ventilated environment during off-season to prevent rust
8. Industry Market Position & Customer Demand Characteristics
Rice harvester chain is a high-demand consumable part in the agricultural machinery industry. Every rice-growing season brings large-scale replacement demand. Global customers pay more attention to wear resistance, consistency, interchangeability with OEM parts and cost performance. High-quality universal rice chains have strong versatility and can adapt to rice, wheat, corn and other grain crop harvesting equipment, with extremely wide market applicability.
Pub Time : 2026-09-23 13:14:46
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Contact Details
Hangzhou Ocean Industry Co.,Ltd
Contact Person: Mrs. Lily Mao
Tel: 008613588811830
Fax: 86-571-88844378