Bushings are critical components in excavators, playing a vital role in enhancing operational efficiency and extending the machine’s service life. They are strategically installed in high-stress areas such as the boom, arm, stick, and bucket to minimize friction and wear between moving metal parts. Designed to withstand heavy loads and harsh working conditions, they also allow for straightforward replacement when worn or damaged.

1. Boom ➊

The boom serves as the primary support structure of the excavator’s working mechanism. It performs lifting and lowering movements through the extension and retraction of the boom cylinder, adjusting the height and position of the bucket to suit various digging depths and operational needs.

Bushing Type: Bronze bushings, self-lubricating bushings

2. Arm & Stick

The arm (or dipper) is connected to the boom and enables extension and contraction via the bucket cylinder. Its length and angle determine the working range and digging angle of the bucket, allowing the machine to perform digging and loading tasks efficiently.

Bushing Type: Steel bushings

3. Bucket

The bucket interacts directly with materials and is used for digging, loading, and transporting. It comes in various designs—such as front shovel, backhoe, clamshell, and grab buckets—to match specific operational requirements.

Bushing Type: Flanged bushings, excavator bucket bushings

4. Crawler Track System ➋

The crawler system consists of track plates, track pins, and track links, forming the excavator’s undercarriage. It provides stability, distributes ground pressure evenly, and ensures reliable traction across challenging terrains.

Bushing Type: Steel bushings

5. Guide Wheel (Idler) ➌

Located at the front of the undercarriage, the guide wheel maintains track alignment, directs travel motion, and helps adjust track tension to prevent over-tightening or excessive slack.

Bushing Type: Steel bushings

6. Support Roller ➍

The support rollers bear the weight of the excavator and evenly distribute load across the track, reducing wear and prolonging track life.

Bushing Type: Steel bushings

7. Hydraulic Cylinder ➎

Hydraulic cylinders act as actuators within the hydraulic system, converting fluid pressure into mechanical energy to drive linear and pivoting motions of the boom, arm, and bucket.

Bushing Type: Bronze bushings, self-lubricating bushings

8. Engine Systems ➏

The engine is the heart of the excavator, and its components operate under extreme pressures and temperatures. Bushings here are critical for reducing friction, minimizing vibration, and ensuring longevity of the core powertrain.

• Cylinder Liners (Wet Sleeves): While not a traditional bushing, cylinder liners are a form of sleeve bearing that guide the piston and contain combustion gases. They are fundamental to engine performance and rebuilds.

• Bushing Type: Bronze bushings, precision-engineered steel-backed bushings.

9. Equalizer Bar & Suspension Linkage ➐

The equalizer bar (or swing circle) connects the upper structure to the undercarriage, allowing the cab to rotate. Its linkage system relies on robust bushings to absorb shock loads and ensure smooth, controlled swinging.

• Bushing Type: Heavy-duty steel bushings, flanged bushings, self-lubricating bushings

MYWAY provides high-performance, precision-engineered bushings for all these applications—from the undercarriage and implements to the engine, powertrain, and hydraulic systems—ensuring reliability, reduced maintenance, and extended excavator life even in the most demanding conditions.