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Product Advantage
This Tension Wheel is a core transmission spare part for WORLD combine harvesters, installed on the header feeding & power transmission system. Its main function is to maintain constant belt tension during harvesting operation.
During field harvesting, the drive belt will loosen due to vibration, heavy load and temperature changes. The tension wheel compensates the belt slack automatically to guarantee stable power transmission. It effectively prevents belt slipping, jumping off, overheating and premature burning. Stable belt tension reduces the risk of crop blockage inside the feeder, which is critical for continuous harvesting work.
The wheel body adopts one-piece ductile cast iron casting, stress-relieved to resist shock and deformation under long-hour vibration, muddy, dusty farm conditions. Equipped with high-quality sealed bearing, it blocks dust, chaff, mud and moisture, reducing bearing seizing and abrasion. All dimensions are strictly matched with OEM specifications. No cutting, welding or modification required, simple and fast field replacement.
If your old tension wheel has bearing noise, wobbling rotation, cracked rim or seized bearing, the belt will lose power and wear rapidly. Timely replacement before harvest season can protect your expensive drive belt and transmission parts, minimize machine breakdown and maximize working hours.
Perfect for agricultural machinery dealers, farm repair workshops, large grain farms and harvester rental fleets. Bulk wholesale is available for distributors.
Basic function
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Maintain stable tension During the operation of the harvester, the belt or chain may loosen due to vibration, wear, and temperature changes. The tension wheel automatically compensates for the tension to ensure normal operation. | Prevent slipping and gear jumping Appropriate tension makes the transmission smoother and reduces power loss. | Extend service life Avoid premature wear of belts and chains due to uneven stress. | Buffer and shock absorption function It plays a role in absorbing and reducing vibrations during high-speed operation, improving mechanical stability. |
Technical Parameters
The Tension Wheel is a critical component of harvester transmission systems, engineered with a robust structural design that ensures durability and stable performance. It features a precise size configuration and optimal wheel height, paired with high-quality materials that enhance wear resistance and shock absorption. The wheel is designed to fit seamlessly into WORLD harvester models, with a weight that balances stability and operational efficiency. Its bearing system supports smooth rotation, while the overall construction is tailored to maintain consistent tension in belts and chains, preventing slipping and ensuring reliable power transmission.
| ITEMS | DESCRIPTION |
| Code | WD.4MC.27-01 |
| Size(mm) | Φ:280 φ:70 H:120 |
| Wheel Height(mm) | 50 |
| Weight(kg) | 8.7 |
✅ Replacement Tension Wheel compatible with WORLD Ruilong combine harvester
✅ One-piece ductile cast iron wheel body, shock-resistant & anti-deformation
✅ Pre-fitted sealed bearing, dustproof, mud-resistant and long service life
✅ Stabilizes belt tension, prevents belt slip, jump-off and burning
✅ Reduces feeding blockage risk, protects the whole transmission system
✅ OEM equivalent dimension, direct bolt-on installation
✅ Strict quality inspection before shipment
Product Uses
This WORLD harvester tension wheel serves the power transmission system of combine harvesters for grain harvesting.
Wheat, rice, barley, oats harvesting: Maintain stable belt tension under variable crop loads, ensure continuous power delivery to header and feeder system.
Long continuous field operation: Adapt to harsh farm environment with dust, straw debris, mud and strong vibration during peak harvest.
Preventive maintenance: Replace worn tension wheel before harvest to avoid sudden machine stop.
Emergency field repair: Quick replacement when bearing stuck or wheel cracked.
Spare parts inventory: Ideal stocking item for agri-parts dealers, repair shops and harvester rental companies.
Product Operate Guide
When installing the Tension Wheel, ensure proper alignment with the belt or chain to avoid deviation during operation. Adjust the wheel’s position to achieve the correct tension—neither too tight nor too loose—to optimize transmission efficiency and prevent premature wear of belts or chains. Operate the harvester within recommended load limits to avoid excessive stress on the tension wheel and associated components.
Regularly lubricate the tension wheel’s bearings to ensure smooth rotation and reduce friction. Clean the wheel surface periodically to remove debris and dirt that could affect performance. Inspect the wheel for signs of cracking, deformation, or abnormal bearing noise, replacing worn or damaged components promptly to prevent transmission system failures.
Conduct visual inspections of the Harvester Tension Pulley before each harvesting season and after prolonged use. Check belt or chain tension regularly during operation, making adjustments as needed to maintain optimal performance. For heavy-use scenarios, increase inspection frequency to ensure early detection of potential issues, minimizing downtime and repair costs.
Q1: Which harvester models does this tension wheel fit?
A1: It is designed for WORLD Ruilong series combine harvesters. Please check your original part number and wheel dimension before ordering to confirm compatibility.
Q2: Is this OEM original part?
A2: It is high-quality aftermarket replacement part. Dimensions, material and bearing specifications are equivalent to OEM standard. Ready for direct installation without modification.
Q3: What are the typical failure symptoms of a bad tension wheel?
A3: Noisy bearing, pulley wobble, stuck rotation, cracked rim, belt slipping, hot/burnt belt, frequent feeding blockage. Replace the tension wheel immediately once these symptoms appear.
Q4: Can I just replace the bearing instead of the whole tension wheel?
A4: You may replace the bearing separately. But if the wheel rim has cracks, out-of-round deformation or serious wear, you have to replace the whole tension wheel. Our pre-assembled unit saves your field repair time.
Q5: How to extend the service life of the tension wheel?
A5: Clean wrapped straw and crop debris regularly. Check bearing lubrication status. Avoid over-tightening the belt during installation.
Q6: Do you support bulk order for dealers?
A6: Yes, we offer competitive wholesale price for agricultural machinery distributors. Contact us for quotation and lead time.
Q7: Any installation tips?
A7: After installation, adjust belt tension to factory recommended range and check belt alignment. If your drive belt is heavily worn, replace the belt and tension wheel together for best performance.
Product Video
