87702973 Double Knife Guard for New Holland Combine Harvesters

Product Specifications

Application	Fits for New Holland Grain Header: 740CF, 880CF, 840CD
SKU	CA0439
Reference Code	87702973
Manufacturer	Raydafon Group
Brand	EP
Weight	0.93KG
Finishing	Painting Yellow Color or Red or Natural or OEM
Packing	Carton packing or wooden box packing

Note: Our products are replacement parts and not original equipment. We provide perfect replacement products for original equipment. If you need to purchase the original equipment, please contact the original supplier.

Overview of 87702973 Double Knife Guard for New Holland Combine Harvesters

The 87702973 Double Knife Guard is a specialized agricultural component designed for use in New Holland Combine Harvesters, and fits the 740CF, 880CF, and 840CD models. This knife guard is an integral part of the combine's cutting system, ensuring efficient and precise cutting during harvesting operations. Typically made from high-strength, durable steel, the double knife guard is engineered to protect and support the cutting knives as they move back and forth to slice through crops such as wheat, soybeans, barley, and other grains. Its design includes two protective prongs or guard fingers, which not only shield the knives from potential damage caused by stones, debris, or hard stalks but also help maintain proper knife alignment for optimal cutting performance. The double knife guard ensures smooth operation by reducing friction and minimizing wear and tear on both the knives and the guard itself. Furthermore, it enhances safety by preventing accidental contact with the sharp knives. Farmers rely on this part for durability and reliability, as it contributes significantly to the efficiency and longevity of their harvesting machinery.

Function and Use of 87702973 Double Knife Guard for New Holland Combine Harvesters

The 87702973 Double Knife Guard is a critical component designed specifically for New Holland Combine Harvesters, where it plays a vital role in the cutting mechanism of the header. The primary function of this double knife guard is to protect and guide the reciprocating cutting knives as they slice through crops during the harvesting process. This component is engineered to deliver durability, precision, and efficiency, ensuring the combine harvester operates effectively in a variety of crop conditions. The double knife guard consists of two prongs or "fingers" made from high-strength, wear-resistant steel or comparable materials. These prongs serve dual purposes: first, they protect the cutting knives from potential damage caused by hard objects such as stones, debris, or tough crop stalks that may be encountered in the field. Second, they provide a stable guide for the knives, ensuring proper alignment and smooth back-and-forth motion. This alignment is crucial for maintaining a clean and consistent cut, which directly affects the quality of the harvest and reduces crop losses. Additionally, the double knife guard enhances safety for operators and maintenance personnel. By covering the sharp, fast-moving knives, the guard reduces the risk of accidental contact during operation or servicing. It also helps prevent unwanted material, such as stalks or debris, from interfering with the cutting action, thereby improving reliability and reducing the likelihood of blockages or malfunctions.

Advantages of 87702973 Double Knife Guard for New Holland Combine Harvesters

The 87702973 Double Knife Guard is an essential component of New Holland Combine Harvesters. It offers several advantages that make it stand out from other knife guards in the market. Here are some main advantages of this component:

1. Enhanced Knife Protection: The 87702973 Double Knife Guard is designed to shield the cutting knives from damage caused by hard objects such as stones, debris, or tough crop stalks. This ensures the knives remain intact and functional during the harvesting process, reducing wear and tear and extending the lifespan of the cutting system.
2. Improved Cutting Efficiency: By maintaining proper alignment of the reciprocating knives, the double knife guard ensures precise and consistent cutting of crops. This leads to a cleaner harvest with minimal losses, as the crops are cut evenly and efficiently, even in dense or challenging field conditions.
3. Durability and Longevity: Manufactured from high-strength, wear-resistant materials, the 87702973 Double Knife Guard is built to endure the stresses of heavy-duty harvesting operations. Its robust construction minimizes the need for frequent replacements, saving farmers time and money on repairs and maintenance.
4. Reduced Friction and Energy Consumption: The knife guard is designed to minimize friction between the knives and the guard itself, allowing smoother knife motion. This reduces the energy required for cutting, improving the overall efficiency of the combine harvester and contributing to lower fuel consumption during operation.
5. Prevention of Crop Blockages: The double knife guard helps prevent unwanted material, such as stalks or debris, from interfering with the cutting mechanism. By ensuring the cutting system remains clear, the guard reduces the likelihood of blockages, maintaining consistent operation and minimizing downtime.
6. Versatility Across Crop Types: The 87702973 Double Knife Guard is designed to handle a variety of crops, including wheat, soybeans, barley, and more. Its versatility ensures optimal performance across different harvesting conditions, making it an indispensable component for diverse farming operations.

How to Replace a Damaged 87702973 Double Knife Guard for New Holland Combine Harvesters

Replacing a damaged 87702973 Double Knife Guard for a New Holland Combine Harvester involves a series of steps to ensure a safe and effective replacement process. Here is a general guide on how to replace the damaged guard:

1. Inspect the Cutting System: Carefully examine the header to locate the damaged 87702973 Double Knife Guard. Look for cracks, bends, or other visible damage that may compromise its performance. While inspecting, check for any additional wear or issues with surrounding components like the cutting knives or bolts, as these may also need attention or replacement.
2. Remove the Damaged Knife Guard: Loosen and remove the bolts or screws securing the damaged knife guard to the header frame. Be cautious when removing it, as the cutting knives may still have sharp edges. Take note of how the damaged guard is positioned to ensure proper alignment when installing the new one.
3. Inspect and Clean the Mounting Area: After removing the damaged guard, inspect the mounting area for debris, rust, or damage. Clean the area thoroughly to ensure a proper fit for the new guard. If the mounting bolts are worn or damaged, replace them with new ones to maintain secure attachment and long-term reliability.
4. Install the New Double Knife Guard: Position the replacement 87702973 Double Knife Guard in the correct alignment as per the original part. Secure it using the bolts or screws, tightening them evenly to ensure the guard is firmly in place. Avoid over-tightening, as this can cause stress on the guard or the header frame.
5. Test the Knife Alignment: Once the new guard is installed, check the alignment of the cutting knives to ensure they move freely within the guard's prongs. Manually move the knives back and forth to confirm there is no obstruction or excessive friction. Proper alignment is essential for efficient cutting and smooth operation.
6. Perform a Test Run: Reconnect the power and start the combine harvester. Engage the header and observe its operation at a low speed. Check for any unusual noises, vibrations, or performance issues. If everything functions correctly, the replacement is successful. Monitor the new guard during the next few uses to ensure it remains secure and performs as expected.

Other Replacement Combine Harvester Parts for New Holland

Combine harvesters are complex agricultural machines that rely on numerous components working in tandem to harvest crops efficiently and effectively. In addition to the Double Knife Guard, the following replacement parts are crucial for maintaining the optimal performance of New Holland combine harvesters:

1. Idler Pulley

The idler pulley is a critical component in the belt drive system of combine harvesters. It helps maintain proper tension and alignment of the belts, ensuring smooth power transmission to various parts of the machine. A worn or damaged idler pulley can lead to belt slippage, reduced efficiency, or machine downtime, making timely replacement essential for optimal performance.

2. Drive Pulley

The drive pulley is responsible for transmitting power from the engine to other mechanical systems within the combine harvester. It works in tandem with the belts, ensuring that the machine’s components operate efficiently. Over time, drive pulleys can wear down, causing reduced power transfer or belt misalignment, necessitating replacement to maintain smooth operation.

3. Gears

Gears are essential for transferring power within the drivetrain and cutting systems of combine harvesters. They are precision-engineered to handle high loads and ensure synchronized operation of various moving parts. Damaged or worn gears can lead to inefficient power transmission, increased wear on other components, and reduced machine reliability, requiring prompt replacement.

4. Drive Shaft

The drive shaft transmits rotational power from the engine to various parts of the combine harvester, such as the cutting platform or threshing mechanism. It is designed to handle heavy loads and continuous use. A failing drive shaft can cause vibrations, loss of power, or complete system failure, making it a key component that requires proper maintenance and replacement when needed.

5. Drive Hub

The drive hub connects the drive shaft to other rotating components, such as the cutting blades or threshing drum. It ensures smooth and reliable power transfer while maintaining alignment. A damaged drive hub can lead to misalignment, excessive wear on connected parts, or uneven operation, necessitating its timely replacement.

6. Knife Blade

Knife blades are crucial for cutting crops during harvesting. These sharp, durable components are mounted on the cutting platform and work in conjunction with knife guards. Over time, knife blades can dull or break due to contact with rocks or tough vegetation, requiring replacement to ensure clean, efficient cutting and prevent crop loss.

7. Drive Sprocket

The drive sprocket is a key component in the chain-driven systems of combines. It transmits power to chains that drive various mechanisms, such as the feeder or threshing system. Worn sprocket teeth can result in chain slippage or breakage, reducing operational efficiency and requiring replacement to maintain functionality.

8. Idler Sprocket

The idler sprocket maintains proper chain tension and alignment in chain-driven systems. It ensures that the drive chain operates smoothly without excessive slack or wear. A damaged or misaligned idler sprocket can lead to chain failure and downtime, making regular inspection and replacement critical for reliable operation of the combine harvester.

Why Choose Raydafon's Forged Knife Guard?

As one of the leading manufacturers and wholesale distributors of aftermarket replacement parts for combine harvesters, balers, tractors, and corn heads in domestic and global markets, Raydafon has a comprehensive range of agricultural spare parts. Our product range consists of best quality aftermarket spare parts for combine harvesters such as John Deere, New Holland, Case, Claas, Welger, KMC, Amadas, Gallignani, Kubota, Laverda, MTZ, Ford, Maschio, Goldoni, Howard, BCS; which are all the world’s leading brands in the agricultural machinery industry. You can view our entire product range in detail on our product page. Our company supplies products to its local customers in whole world. Over time, it has come a long way in this field, too. Currently, our company exports its products to its valued customers in more than 50 countries in 5 continents of the world. We continue to work with all our strengths to provide the best service to our business partners with our professional human resources, strong infrastructure, and customer-oriented service approach. 1. Quality Products: Our products are crafted with precision and high-quality materials to ensure durability and performance. We adhere to stringent quality standards, ensuring each part meets the demands of rigorous agricultural operations. 2. Wide Range of Products: We offer an extensive selection of aftermarket spare parts for leading agricultural machinery brands. Our diverse product range meets the varied needs of farmers and businesses worldwide. 3. Competitive Prices: We provide top-quality products at competitive prices, offering exceptional value without compromising on quality. Our efficient manufacturing and strategic partnerships help keep costs low. 4. Excellent Customer Service: Customer satisfaction is our priority. Our dedicated team is ready to assist with inquiries, orders, and technical support. We focus on building long-term relationships through personalized service and expert advice. 5. Fast Delivery: We understand the importance of timely delivery in agriculture. Our efficient logistics network ensures that orders are delivered promptly, minimizing downtime during critical operations. 6. Customization Products: We offer tailored solutions by welcoming customer specifications and designs. Provide drawings or samples, and our expert team will create customized parts to meet your unique needs, ensuring optimal performance.