Excavator arms are crucial components of the machine's hydraulic system and are responsible for providing the lifting and digging capabilities. Several parts make up the excavator arm assembly. Here are some of the key components:
1. Boom: The boom is the main arm section that extends outward from the machine's body. It provides reach and lifting capacity to the excavator. The boom connects to the machine's mainframe and is usually hydraulically controlled to raise and lower.
2. Stick (also known as the dipper arm): The stick is the section that attaches to the boom and extends further to reach the digging area. It is responsible for controlling the depth and movement of the bucket or attachment. The stick can be extended or retracted using hydraulic cylinders.
3. Bucket Cylinder: The bucket cylinder is a hydraulic cylinder that connects the boom and the stick to the bucket. It controls the movement and positioning of the bucket, allowing for digging, loading, and dumping operations.
4. Linkage: The linkage consists of various connecting components, such as pins, bushings, and link arms. These components provide the necessary mechanical connections between the boom, stick, and bucket, allowing for smooth and controlled movement.
5. Bucket: The bucket is the attachment at the end of the arm that is used for digging, scooping, and material handling. Buckets come in various sizes and configurations, depending on the specific application and digging requirements.
6. Boom Cylinder: The boom cylinder is a hydraulic cylinder that connects the mainframe of the excavator to the boom. It controls the raising and lowering of the boom, allowing for vertical movement and positioning.
7. Stick Cylinder: The stick cylinder is a hydraulic cylinder that connects the boom to the stick. It controls the extension and retraction of the stick, allowing for horizontal movement and reach.
8. Pins and Bushings: Pins and bushings are used throughout the excavator arm assembly to provide pivot points and reduce friction between moving parts. They play a crucial role in allowing smooth and controlled movement of the arm components.
9. Cylinder Mounts: Cylinder mounts are brackets or attachments that secure the hydraulic cylinders to the excavator's mainframe, boom, and stick. They provide stability and support to the cylinders during operation.
10. Cylinder Guards: Cylinder guards are protective covers or shields that are installed around the hydraulic cylinders. They help prevent damage to the cylinders from debris, rocks, or other hazards that may be encountered during excavation or construction work.
11. Grease Fittings: Grease fittings, also known as grease zerks or grease nipples, are small fittings that allow for lubrication of moving parts. They are typically installed at critical points in the arm assembly, such as the pivot points, to ensure smooth operation and reduce wear.
12. Mounting Brackets: Mounting brackets are used to attach the arm assembly to the excavator's mainframe. These brackets provide a secure connection and allow for proper alignment and positioning of the arm components.
13. Counterweight: Although not directly part of the arm assembly, the counterweight plays a significant role in balancing the excavator. It is typically located on the rear of the machine and helps counterbalance the weight of the arm, boom, and attachments during operation.
14. Cylinder Hoses and Fittings: Hydraulic hoses and fittings connect the hydraulic cylinders to the excavator's hydraulic system. These hoses transport hydraulic fluid, allowing for the controlled movement of the cylinders and operation of the arm.
15. Boom Foot: The boom foot is the bottom part of the boom that rests on the ground or other surfaces during operation. It provides stability and support to the excavator arm, especially when digging or lifting heavy loads.
16. Arm Rest: Some excavators have an armrest or arm support feature incorporated into the design. The armrest provides additional comfort and stability for the operator's arm during long hours of operation.
17. Arm Position Sensors: Modern excavators may be equipped with position sensors or angle sensors that provide feedback on the position and movement of the arm components. These sensors help the excavator's control system monitor and adjust the arm's position accurately.
18. Arm Controls: The excavator's operator uses arm controls, such as joysticks or control levers, to manipulate the arm's movement. These controls transmit signals to the hydraulic system, enabling the operator to extend, retract, raise, lower, and articulate the arm as needed.
19. Arm Cylinder Guards: Similar to cylinder guards, arm cylinder guards are protective covers installed around the arm cylinders. They help shield the cylinders from potential damage caused by impacts, debris, or other hazards encountered during operation.
20. Arm Cylinder Seals: Seals are essential components within the hydraulic cylinders that prevent hydraulic fluid leaks. Arm cylinder seals ensure the proper functioning and efficiency of the cylinders by maintaining a secure and leak-free hydraulic system.
21. Arm Linkage Pins: Arm linkage pins are used to connect the various components of the arm assembly, such as the boom, stick, and bucket, together. These pins provide a secure and robust connection, allowing for the articulation and movement of the arm.
22. Arm Cylinder Control Valve: The arm cylinder control valve is a hydraulic valve that regulates the flow of hydraulic fluid to the arm cylinders. It helps control the speed and force of the arm's movement, allowing for precise operation and control.
23. Arm Cylinder Rods and Pistons: The arm cylinders consist of rods and pistons that convert hydraulic pressure into linear motion. The rod extends and retracts, while the piston moves within the cylinder barrel, generating the force required for arm movement.
24. Arm Cylinder Hoses and Fittings: Similar to the cylinder hoses and fittings mentioned earlier, the arm cylinders have their own set of hydraulic hoses and fittings that transport hydraulic fluid to and from the cylinders.
25. Arm Cylinder Mounting Brackets: Arm cylinder mounting brackets are used to secure the arm cylinders to the boom, stick, or other structural components of the arm assembly. These brackets provide stability and ensure proper alignment of the cylinders.
26. Arm Wear Plates: Arm wear plates are protective plates installed on areas of the arm that are prone to wear, such as the underside of the boom or stick. These plates help increase the longevity of the arm assembly by reducing wear caused by friction and abrasion.
27. Arm Pin Locking Mechanisms: Some excavators may be equipped with pin locking mechanisms that secure the arm linkage pins in place. These mechanisms prevent unintentional disconnection or movement of the arm components during operation.
28. Arm Cylinder Hydraulic Seals: Hydraulic seals are critical components within the arm cylinders that prevent hydraulic fluid leaks. They ensure the proper functioning and efficiency of the cylinders by maintaining a tight seal and preventing fluid loss.
29. Arm Cylinder Rod Guards: Arm cylinder rod guards are protective covers or shields that are installed around the exposed rod portion of the arm cylinders. These guards help prevent damage to the rod from impacts, debris, or other external factors, ensuring the smooth operation of the cylinders.
30. Arm Cylinder Locking Pins: Arm cylinder locking pins are used to secure the arm cylinders in a fixed position when the excavator is being transported or not in use. These pins prevent unintended movement or extension of the arm during transportation or maintenance.
31. Arm Cylinder Bearings: Arm cylinder bearings are used to reduce friction and provide smooth movement between the arm cylinders and the components they connect to. These bearings ensure proper articulation and minimize wear on the arm assembly.
32. Arm Cylinder Control Levers: Arm cylinder control levers are part of the operator's control system and are used to operate and control the movement of the arm cylinders. These levers allow the operator to extend, retract, and control the speed and precision of the arm's motion.
33. Arm Cylinder Accumulators: Arm cylinder accumulators are hydraulic devices that store and release pressurized fluid to provide additional force or absorb shock during arm movement. They help improve the efficiency and performance of the arm assembly.
34. Arm Cylinder Piston Rings: Arm cylinder piston rings are used to maintain a proper seal between the piston and cylinder wall, preventing hydraulic fluid leaks and ensuring optimal performance of the arm cylinders.
35. Arm Cylinder Pressure Relief Valves: Pressure relief valves are safety devices installed in the hydraulic system to protect the arm cylinders from excessive pressure. These valves release or redirect hydraulic fluid to maintain safe operating conditions for the arm assembly.
36. Arm Cylinder Lock Valves: Arm cylinder lock valves are hydraulic valves that lock the arm cylinders in position, holding them securely during operations that require the arm to remain stationary for extended periods. These valves prevent unintended movement or drift of the arm.
37. Arm Cylinder Cushions: Arm cylinder cushions, also known as shock absorbers, are located within the arm cylinders. They help dampen the impact and reduce vibrations during the movement of the arm, providing smoother operation and minimizing stress on the components.
38. Arm Cylinder Pressure Sensors: Arm cylinder pressure sensors are devices that monitor the hydraulic pressure within the arm cylinders. These sensors provide feedback to the excavator's control system, allowing for precise control and adjustment of the arm's lifting and digging capabilities.
39. Arm Cylinder Flow Control Valves: Flow control valves are hydraulic valves that regulate the flow rate of hydraulic fluid to the arm cylinders. These valves help control the speed and movement of the arm, ensuring smooth and controlled operation.
40. Arm Cylinder Heat Shields: Arm cylinder heat shields are protective covers designed to shield the arm cylinders from excess heat generated during operation. They help prevent overheating of the cylinders and maintain their optimal performance.
41. Arm Cylinder End Fittings: Arm cylinder end fittings are the connectors located at the ends of the hydraulic cylinders. These fittings provide a secure attachment point for hydraulic hoses and facilitate the proper flow of hydraulic fluid to and from the cylinders.
42. Arm Cylinder Servo Valves: Servo valves are precision hydraulic valves that provide precise control of the arm cylinder movement. They allow for accurate positioning and smooth operation of the arm, especially in applications that require high precision and control.
43. Arm Cylinder Sealing Kits: Sealing kits include various seals, gaskets, and O-rings that are used to replace worn or damaged seals within the arm cylinders. These kits help maintain the hydraulic integrity of the cylinders, preventing leaks and ensuring optimal performance.
44. Arm Cylinder Counterbalance Valves: Counterbalance valves are hydraulic valves that control the movement and positioning of the arm cylinders by balancing the hydraulic forces. They help prevent uncontrolled or sudden movements of the arm and provide stability during lifting and digging operations.
45. Arm Cylinder Pressure Gauges: Arm cylinder pressure gauges are instruments that display the hydraulic pressure within the arm cylinders. These gauges provide real-time pressure readings, allowing the operator to monitor and adjust the hydraulic system accordingly.
46. Arm Cylinder Speed Control Valves: Speed control valves, also known as flow control valves, regulate the speed of hydraulic fluid flow to the arm cylinders. They enable the operator to adjust the arm's movement speed for different tasks or operating conditions.
47. Arm Cylinder Electrical Connectors: Electrical connectors are used to establish electrical connections between the arm cylinders and the excavator's control system. These connectors transmit electrical signals for monitoring and controlling the arm's movement.
48. Arm Cylinder Position Feedback Sensors: Position feedback sensors are devices that provide information about the position and movement of the arm cylinders. They enable the excavator's control system to accurately track the arm's position and ensure precise control.
49. Arm Cylinder Retract Limit Valves: Retract limit valves are hydraulic valves that control the maximum retraction distance of the arm cylinders. They help prevent over-retraction of the arm and ensure safe operation within the intended range.
50. Arm Cylinder Extend Limit Valves: Extend limit valves are hydraulic valves that control the maximum extension distance of the arm cylinders. They prevent over-extension of the arm and ensure safe operation within the specified limits.
51. Arm Cylinder Lockout Valves: Lockout valves are hydraulic valves that lock the arm cylinders in position to prevent unintended movement or drift. They are commonly used during maintenance or when the arm needs to be held in a fixed position for an extended period.
52. Arm Cylinder Temperature Sensors: Temperature sensors are used to monitor the temperature of the hydraulic fluid within the arm cylinders. These sensors provide feedback on fluid temperature, helping to prevent overheating and maintain optimal operating conditions.
53. Arm Cylinder Filter Assemblies: Filter assemblies are used to remove contaminants and impurities from the hydraulic fluid that flows through the arm cylinders. They help maintain the cleanliness of the hydraulic system, prolonging the lifespan of the cylinders and other components.
54. Arm Cylinder Check Valves: Check valves, also known as non-return valves, are hydraulic valves that allow fluid flow in one direction while preventing backflow. Arm cylinder check valves help maintain the position of the arm and prevent it from drifting or moving unintentionally.
55. Arm Cylinder Load Holding Valves: Load holding valves, also called counterbalance valves, are hydraulic valves that hold the position of the arm under load, preventing the arm from lowering or dropping unexpectedly. These valves ensure stability and safety during lifting operations.
56. Arm Cylinder Flow Dividers: Flow dividers are hydraulic devices used to split the hydraulic flow into multiple paths. In the context of the excavator arm assembly, arm cylinder flow dividers allow for independent control and movement of different arm sections, such as the boom and stick.
57. Arm Cylinder Rod End Bearings: Arm cylinder rod end bearings provide support and allow for smooth movement between the rod end and the arm structure. These bearings reduce friction and wear, ensuring efficient operation and longevity of the arm assembly.
58. Arm Cylinder Control Switches: Arm cylinder control switches are part of the operator's control panel and are used to activate and control the movement of the arm cylinders. These switches enable the operator to extend, retract, and control the positioning of the arm.
59. Arm Cylinder Accumulator Charging Valves: Accumulator charging valves are hydraulic valves used to charge and maintain the pressure in the arm cylinder accumulators. These valves ensure that the accumulators are ready to provide additional force or absorb shocks when required.
60. Arm Cylinder Anti-Drift Valves: Anti-drift valves are hydraulic valves that prevent the arm cylinders from drifting or moving slowly due to internal leakage. These valves help maintain the position and stability of the arm, especially when it needs to be held stationary for extended periods.
61. Arm Cylinder Internal Cushions: Arm cylinder internal cushions are built-in features within the cylinders that provide additional shock absorption and cushioning during arm movement. They reduce the impact and vibration, enhancing the smoothness and control of the arm operation.
62. Arm Cylinder Swivel Joints: Swivel joints are mechanical connections that allow for rotation or articulation between different sections of the arm assembly. Arm cylinder swivel joints enable the arm to move and articulate in various directions, providing flexibility and reach during operation.
63. Arm Cylinder Position Sensors: Arm cylinder position sensors are devices that detect and provide feedback on the precise position of the arm cylinders. These sensors enable the excavator's control system to accurately track and control the arm's movement.
64. Arm Cylinder Load Sensors: Arm cylinder load sensors are used to measure the load or force exerted on the arm cylinders during lifting or digging operations. These sensors provide valuable information for load monitoring and safety purposes.
65. Arm Cylinder Quick Couplers: Quick couplers are mechanical devices that allow for easy and efficient attachment and detachment of additional arm attachments, such as buckets or grapples. These couplers enable the operator to quickly switch between different tools or attachments, enhancing the versatility of the arm assembly.
66. Arm Cylinder Electrical Wiring Harness: The electrical wiring harness is a network of electrical cables and connectors that transmit power and signals between various electrical components of the arm assembly, such as sensors, switches, and control systems.
67. Arm Cylinder Hydraulic Hoses: Hydraulic hoses are flexible tubes that carry hydraulic fluid between different hydraulic components, including the arm cylinders. These hoses ensure the proper flow of fluid and enable the movement and control of the arm.
68. Arm Cylinder Control Valves: Arm cylinder control valves are hydraulic valves that regulate the flow and direction of hydraulic fluid to the arm cylinders. These valves allow for precise control and manipulation of the arm's movement and functions.
69. Arm Cylinder Wear Pads: Arm cylinder wear pads are protective pads or strips made of durable material that are placed on high-wear areas of the arm assembly. These pads minimize friction and wear, extending the lifespan of the arm cylinders and other components.
70. Arm Cylinder Grease Fittings: Grease fittings, also known as grease nipples or zerks, are small fittings that allow for the lubrication of moving parts within the arm cylinders. Greasing helps reduce friction and wear, ensuring smooth and reliable operation.
71. Arm Cylinder Hydraulic Filters: Hydraulic filters are used to remove contaminants and impurities from the hydraulic fluid flowing into the arm cylinders. These filters help maintain the cleanliness of the hydraulic system and protect the cylinders from damage.
72. Arm Cylinder Control Levers: Arm cylinder control levers are manual controls operated by the excavator operator. These levers allow the operator to control the movement and positioning of the arm cylinders, providing fine-tuned control over the excavator's functions.
73. Arm Cylinder Lock Pins: Arm cylinder lock pins are mechanical pins that secure the arm cylinders in place when the arm needs to be locked in a specific position. These pins prevent unintended movement of the arm cylinders during transportation or when the excavator is not in use.
74. Arm Cylinder Protective Covers: Protective covers are used to shield the arm cylinders from external elements such as dirt, debris, and weather conditions. These covers help prevent damage and ensure the longevity of the arm cylinders.
75. Arm Cylinder Mounting Brackets: Mounting brackets are structural components that provide support and secure attachment points for the arm cylinders. These brackets ensure the proper alignment and stability of the cylinders within the excavator's arm assembly.
76. Arm Cylinder Control Pedals: Arm cylinder control pedals are foot-operated controls used by the excavator operator to control the movement and functions of the arm cylinders. These pedals allow for precise control and coordination of the arm's actions.
77. Arm Cylinder Hydraulic Reservoir: The hydraulic reservoir is a container that stores hydraulic fluid for the arm cylinders and other hydraulic components of the excavator. The reservoir helps maintain an adequate supply of hydraulic fluid for smooth operation and cooling.
78. Arm Cylinder Piston Rings: Piston rings are sealing rings that are fitted around the pistons inside the arm cylinders. These rings help maintain the sealing integrity of the cylinders, preventing hydraulic fluid leaks and ensuring efficient operation.
79. Arm Cylinder Control System: The arm cylinder control system consists of various electronic and hydraulic components that enable the control and coordination of the arm's movement. This system includes sensors, valves, pumps, and control units that work together to ensure precise and responsive arm operation.
80. Arm Cylinder Boom Stops: Boom stops are mechanical devices that limit the range of motion of the arm's boom section. These stops prevent overextension or over-retraction of the boom, protecting the arm cylinders from excessive strain or damage.
81. Arm Cylinder Pilot Control Valves: Pilot control valves are small hydraulic valves that act as control mechanisms for larger hydraulic valves in the arm cylinder circuit. These valves help regulate the flow and pressure of hydraulic fluid, ensuring smooth and controlled arm movement.
82. Arm Cylinder Boom Arm: The boom arm is a major component of the excavator arm assembly. It provides the primary extension and retraction movement of the arm. The boom arm is typically composed of multiple sections that can be extended or retracted to adjust the reach and height of the arm.
83. Arm Cylinder Stick Arm: The stick arm, also known as the dipper arm, is another significant component of the excavator arm assembly. It is connected to the boom arm and provides additional reach and digging capability. The stick arm can be extended or retracted to adjust the depth of excavation.
84. Arm Cylinder Bucket Linkage: The bucket linkage is a mechanical linkage system that connects the arm cylinders to the excavator bucket. It translates the force and movement from the arm cylinders to the bucket, allowing for digging, lifting, and dumping operations.
85. Arm Cylinder Bucket Cylinder: The bucket cylinder is a hydraulic cylinder that controls the movement of the excavator bucket. It is typically mounted between the bucket linkage and the bucket itself. The bucket cylinder allows for the opening and closing of the bucket to scoop, carry, and dump materials.
86. Arm Cylinder Bucket Teeth: Bucket teeth are replaceable tooth-like attachments that are mounted on the edge of the excavator bucket. They provide improved digging and breaking capabilities, allowing the bucket to penetrate the ground or break through hard materials.
87. Arm Cylinder Bucket Cutting Edge: The bucket cutting edge is a replaceable edge that is attached to the front lip of the excavator bucket. It helps in cutting through soil, rocks, or other materials during digging operations. The cutting edge can be replaced when it becomes worn or damaged.
88. Arm Cylinder Bucket Thumb: The bucket thumb is an optional attachment that can be added to the excavator bucket. It provides additional gripping capability, allowing the operator to secure and handle irregularly shaped objects or materials.
89. Arm Cylinder Boom Cylinder: The boom cylinder is a hydraulic cylinder that controls the movement of the boom arm. It enables the extension and retraction of the boom, allowing for adjustable reach and height of the arm assembly.
90. Arm Cylinder Stick Cylinder: The stick cylinder is a hydraulic cylinder that controls the movement of the stick arm. It enables the extension and retraction of the stick arm, adjusting the depth of excavation and the reach of the arm assembly.
91. Arm Cylinder Boom Suspension System: The boom suspension system is a mechanism that provides shock absorption and stability to the boom arm. It minimizes vibrations and impacts during operation, improving operator comfort and reducing stress on the arm cylinders.
92. Arm Cylinder Boom Foot: The boom foot, also known as the boom base or boom mount, is the lowermost part of the boom arm. It provides support and attachment points for the boom arm to the excavator's main structure or undercarriage.
93. Arm Cylinder Stick Foot: The stick foot, also known as the stick base or stick mount, is the lowermost part of the stick arm. It provides support and attachment points for the stick arm to the boom arm or other components of the excavator.
94. Arm Cylinder Boom Rest: The boom rest is a structure or mechanism that supports the boom arm when it is not in use or during transportation. It helps protect the boom arm from damage and provides stability to the excavator.
95. Arm Cylinder Stick Rest: The stick rest is a structure or mechanism that supports the stick arm when it is not in use or during transportation. It helps protect the stick arm from damage and provides stability to the excavator.
96. Arm Cylinder Boom Cylinder Guard: The boom cylinder guard is a protective cover or shield that encloses the boom cylinder(s). It helps prevent damage to the cylinder(s) from external impacts, debris, or other hazards.
97. Arm Cylinder Stick Cylinder Guard: The stick cylinder guard is a protective cover or shield that encloses the stick cylinder(s). It helps prevent damage to the cylinder(s) from external impacts, debris, or other hazards.
98. Arm Cylinder Pin Retaining Clips: Pin retaining clips, also known as snap rings or circlips, are small metal clips that secure the pins in place within the arm assembly. These clips prevent accidental dislodgment or movement of the pins during operation.
99. Arm Cylinder Pin Locking Plates: Pin locking plates are metal plates that provide additional security and stability to the arm assembly by locking the pins in place. These plates help prevent the pins from loosening or shifting during heavy-duty operations.
100. Arm Cylinder Pin Grease Fittings: Pin grease fittings, similar to arm cylinder grease fittings mentioned earlier, are small fittings that allow for the lubrication of the pins within the arm assembly. Greasing these pins helps reduce friction and wear, ensuring smooth and reliable operation.
These additional components contribute to the strength, stability, protection, and maintenance of the excavator arm assembly. Their specific presence and configurations may vary depending on the excavator model, manufacturer, and the specific requirements of the machine.
The price range of the components mentioned can vary significantly depending on factors such as the specific excavator model, brand, quality, and supplier. Additionally, prices can also be influenced by factors like regional variations, market conditions, and currency fluctuations. It's important to note that the prices provided here are rough estimates and may not reflect current market prices. It's always recommended to consult with manufacturers, dealers, or excavator parts suppliers for accurate and up-to-date pricing information.
Some approximate price ranges for the excavator arm assembly components:
- Arm Cylinder: $1,500 to $5,000 per cylinder.
- Arm Cylinder Position Sensors: $100 to $500 per sensor.
- Arm Cylinder Load Sensors: $200 to $800 per sensor.
- Arm Cylinder Quick Couplers: $500 to $1,500 per coupler.
- Arm Cylinder Electrical Wiring Harness: $200 to $800 per harness.
- Arm Cylinder Hydraulic Hoses: $50 to $200 per hose.
- Arm Cylinder Control Valves: $500 to $2,000 per valve.
- Arm Cylinder Wear Pads: $50 to $200 per pad.
- Arm Cylinder Grease Fittings: $5 to $20 per fitting.
- Arm Cylinder Hydraulic Filters: $20 to $100 per filter.
- Arm Cylinder Control Levers: $100 to $500 per lever.
- Arm Cylinder Lock Pins: $20 to $100 per pin.
- Arm Cylinder Protective Covers: $50 to $200 per cover.
- Arm Cylinder Mounting Brackets: $100 to $500 per bracket.
- Arm Cylinder Control Pedals: $100 to $500 per pedal.
- Arm Cylinder Hydraulic Reservoir: $200 to $1,000 per reservoir.
- Arm Cylinder Piston Rings: $50 to $200 per set.
- Arm Cylinder Control System: $1,000 to $5,000 for the system.
- Arm Cylinder Boom Stops: $50 to $200 per stop.
- Arm Cylinder Pilot Control Valves: $500 to $2,000 per valve.
- Arm Cylinder Boom Arm: $2,000 to $10,000 for the arm.
- Arm Cylinder Stick Arm: $2,000 to $10,000 for the arm.
- Arm Cylinder Bucket Linkage: $500 to $2,000 for the linkage.
- Arm Cylinder Bucket Cylinder: $1,000 to $5,000 per cylinder.
- Arm Cylinder Bucket Teeth: $20 to $100 per tooth.
- Arm Cylinder Bucket Cutting Edge: $100 to $500 per edge.
- Arm Cylinder Bucket Thumb: $1,000 to $5,000 for the thumb.
- Arm Cylinder Boom Cylinder: $1,000 to $5,000 per cylinder.
- Arm Cylinder Stick Cylinder: $1,000 to $5,000 per cylinder.
- Arm Cylinder Boom Suspension System: $500 to $2,000 for the system.
It's worth noting that these prices are rough estimates and can vary significantly. It's always advisable to obtain specific quotes from reputable excavator parts suppliers or manufacturers for accurate pricing information.
