An excavator top roller, also known as an upper roller or carrier roller, is a component of the excavator's undercarriage system. It is located at the top of the excavator's track frame and is designed to support and guide the excavator's track chain as it moves.
The top roller consists of a cylindrical roller with a shaft that attaches to the excavator's frame. It is typically made of durable materials such as steel and is designed to withstand the weight of the excavator and the forces encountered during operation. The roller rotates on its shaft, allowing the excavator's track chain to smoothly move along the track frame.
The primary functions of the excavator top roller are:
1. Load Distribution: The top roller helps distribute the weight of the excavator evenly across the track chain, reducing stress on individual components and extending their lifespan.
2. Track Guidance: The top roller acts as a guide for the track chain, ensuring proper alignment and preventing lateral movement or derailment during operation.
3. Tension Adjustment: Some excavator models feature adjustable top rollers that allow for track tension adjustment. This feature helps maintain the optimal tension in the track chain, ensuring proper performance and minimizing wear.
The price of an excavator top roller can vary depending on factors such as the excavator model, brand, size, and quality of the roller. Additionally, prices can vary based on whether you are purchasing a new top roller or a remanufactured/rebuilt one. It's recommended to consult with authorized dealers or suppliers to get specific pricing information for the top roller compatible with your excavator model.
Types of excavator top roller
There are several types of excavator top rollers available, designed to fit different excavator models and undercarriage configurations. Here are some common types:
1. Single Flange Top Roller: This type of top roller has a single flange on one side and is designed to guide the track chain on excavators with a single flange bottom roller.
2. Double Flange Top Roller: Double flange top rollers have flanges on both sides and are used in excavators with double flange bottom rollers. They provide additional stability and track chain guidance.
3. Center-Guiding Top Roller: Center-guiding top rollers have a centered design, with flanges on both sides. They are used in excavators with center-guiding track frames, which have a center guide rail between the track chains.
4. Swivel Top Roller: Swivel top rollers have a swiveling mechanism that allows them to adjust to the track chain's movement during operation. They provide enhanced track chain guidance and reduce wear on the roller and track components.
5. Maintenance-Free Top Roller: Some manufacturers offer maintenance-free top rollers that are designed with sealed bearings or self-lubricating bushings. These rollers require less maintenance and provide longer service life.
6. Heavy-Duty Top Roller: Heavy-duty top rollers are built with reinforced construction and materials to withstand harsh working conditions and heavy loads. They are suitable for demanding applications and ensure durability and reliability.
7. Bolt-On Top Roller: Bolt-on top rollers are designed to be easily attached and detached from the excavator's track frame using bolts. This type of top roller allows for convenient replacement and maintenance.
8. Lubricated Top Roller: Lubricated top rollers are equipped with lubrication fittings or oil reservoirs, allowing for regular lubrication of the roller's bearings. Proper lubrication helps reduce friction and wear, prolonging the roller's lifespan.
9. Sealed Top Roller: Sealed top rollers are designed with sealed bearings or bushings that are protected from contaminants such as dirt, dust, and moisture. They provide enhanced durability and require less frequent maintenance.
10. Floating Top Roller: Floating top rollers are designed to have some degree of vertical movement or play. This allows the top roller to better adjust to uneven terrain and variations in track tension, ensuring optimal track chain contact and performance.
11. Polyurethane-Coated Top Roller: Some top rollers feature a polyurethane coating on the roller surface. This coating provides increased traction and reduces track slippage, especially in slippery or challenging working conditions.
12. Self-Cleaning Top Roller: Self-cleaning top rollers are designed with special features or contours that help prevent the accumulation of debris, mud, or materials. This reduces the risk of track chain damage and improves overall performance.
It's important to note that the availability of specific types of top rollers can vary depending on the excavator model and manufacturer. The choice of top roller should consider factors such as the excavator's undercarriage configuration, working conditions, and the specific needs of the project.
When selecting a top roller for your excavator, it's advisable to consult with the manufacturer or authorized dealers to ensure compatibility, proper fitment, and optimal performance.
Price ranges of excavator top roller
The price of excavator top rollers can vary depending on factors such as the excavator model, brand, quality, and where you purchase them. Additionally, prices can vary based on the specific type of top roller and its features. Here are some general price ranges for excavator top rollers:
1. Single Flange Top Roller: $50 - $200 per piece
2. Double Flange Top Roller: $80 - $250 per piece
3. Center-Guiding Top Roller: $100 - $300 per piece
4. Swivel Top Roller: $150 - $400 per piece
5. Maintenance-Free Top Roller: $120 - $350 per piece
6. Heavy-Duty Top Roller: $150 - $450 per piece
7. Bolt-On Top Roller: $80 - $250 per piece
8. Lubricated Top Roller: $100 - $300 per piece
9. Sealed Top Roller: $120 - $350 per piece
10. Floating Top Roller: $150 - $400 per piece
11. Polyurethane-Coated Top Roller: $150 - $400 per piece
12. Self-Cleaning Top Roller: $120 - $350 per piece
Please note that these price ranges are approximate and can vary significantly based on factors such as the specific top roller, brand, quality, and supplier. Prices can also vary based on the excavator model and make. It's recommended to obtain specific pricing information from authorized dealers, suppliers, or manufacturers for accurate and up-to-date pricing.
Additionally, considering the importance of quality and durability, it is advisable to choose genuine or high-quality top rollers to ensure optimal performance and longevity of your excavator's undercarriage system.
