Excavator Slewing Bearing
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Swing Bearing 2109-1059a Doosan S340LC-V

Category: Tag:

Part #: 2109-1059a
Make:Doosan
Model: S340LC-V
Condition: New

Choose Your Brand of Excavator Parts

Doosan Swing Bearing Replacement

Model Part Number Outer Diameter Inside Diameter Total height Outer Height Inner Height Outer Hole Parameters Inner Hole Parameters Number of Teeth
S140LC-V 109-00165 1202 945 84 75 70 36-Ф22 36-M20 80
DX225 109-00162 1327 1082 110 90 95 36 36 92
DX225 109-00162A 1327 1082 110 90 95 36-φ21 36-M20*1.5 92
DX225LC 109-00162 1327 1082 110 90 95 36-φ21 36-M20*1.5 92
DX225LCA 109-00162A 1327 1082 110 90 95 36-φ21 36-M20*1.5 92
DX225LCA 140109-00048A 1327 1082 110 90 95 36-φ21 36-M20*1.5 92
S225NLC 140109-00045 1327 1082 110 90 95 36-φ21 36-M20*1.5 92
SL220LC-V 109-00052 1328 1084 110 91 95 36-φ21 36-M20*1.5 92
225NLC-V 109-00052B 1328 1084 110 91 95 36-φ21 36-M20*1.5 92
225NLC-V 140109-00045 1328 1084 110 91 95 36-φ21 36-M20*1.5 92
255LC-V 109-00030B 1410 1131 117 89 105 35-φ25 36-M24*2 82
255LC-V 180-00297D3 1410 1131 117 89 105 35-φ25 36-M24*2 82
255lc-v 140109-00042 1410 1131 117 89 105 35-φ25 36-M24*2 82
255lc-v 140109-00043 1410 1131 117 89 105 35-φ25 36-M24*2 82
Dx300LCA 140109-00010A 1475 1165 120 90 110 35 36 85
S340 140109-00038 1544 1235 122 87 110 35-φ26 40-M24 90
S340LC-V 140109-00038 1544 1235 122 87 110 35-φ26 40-M24 90
S340LC-V 2109-1059a 1544 1235 122 87 110 35-φ26 40-M24 90
DOOSAN 420 140109-00039 1549 1235 134 103 120 35-φ26 40-M24 90
S420LC-V 109-00161 1550 1235 135 102 120 35-φ26 40-M24 90
DX420LC 140109-00007A 1550 1236 132 103 120 35 40 90
470 109-00159 1682 1320 139 118 111 44 44 111

Excavators are essential in construction, mining, and forestry. One key component that ensures their efficient operation is the swing bearing. This article explores the importance, structure, types, maintenance, and common issues of excavator swing bearings.

Understanding Excavator Swing Bearings

An excavator swing bearing, also known as a slewing ring, slewing bearing,allows the upper structure to rotate 360 degrees. This rotation is crucial for digging, moving, and unloading materials. The bearing supports axial, radial, and moment loads, making it vital for the machine.

Structure of an Excavator Swing Bearing

An excavator slewing bearing consists of:

    • Inner and Outer Rings: Made from high-strength steel to withstand heavy loads.
    • Rolling Elements: Balls or rollers that facilitate smooth rotation.
    • Cages: Keep the rolling elements evenly spaced.
    • Seals: Protect the bearing from dirt, water, and debris.

Types of Excavator Slewing Bearings

Slewing bearings come in various designs:

    • Single-row Ball Bearings: Balance load capacity and rotational speed.
    • Double-row Ball Bearings: Provide higher load capacities for larger excavators.
    • Crossed Roller Bearings: Handle heavy axial and radial loads simultaneously.
    • Three-row Roller Bearings: Offer maximum load capacity for robust excavators.

Importance of Slewing Bearings in Excavators

Slewing bearings ensure even load distribution, maintaining the excavators structural integrity. They allow for 360-degree rotation, enhancing operational efficiency in confined spaces. Their durability reduces downtime and maintenance costs.

Maintenance of Excavator Slewing Bearings

Proper maintenance includes:

    • Regular Inspections: Check for wear, corrosion, or damage.
    • Lubrication: Reduce friction and prevent wear.
    • Seal Integrity: Ensure seals are intact to prevent contamination.
    • Load Management: Avoid overloading the excavator.
    • Alignment: Ensure proper alignment to prevent uneven wear.

Common Issues with Swing Bearings

Common issues include:

    • Wear and Tear: Caused by continuous operation and heavy loads.
    • Contamination: Dirt, water, and debris entering the bearing.
    • Corrosion: Due to moisture and harsh conditions.
    • Misalignment: Resulting from improper installation or structural issues.
      excavator swing bearing

      excavator swing bearing

Conclusion

Excavator swing bearings are crucial for the functionality and efficiency of excavators. Understanding their structure, types, importance, maintenance, and common issues is essential for optimal performance. Proper maintenance and timely issue resolution can extend the lifespan and reliability of these bearings, enhancing productivity.

With over 1000 types of swing bearings available, we provide unparalleled choice and flexibility.Whether you're in the market for CAT, KOMATSU, HITACHI, HYUNDAI, KOBELCO, VOLVO, DOOSAN, JCB, CASE, LIEBHERR, LIUGONG, SANY, YUCHAI, XCMG, SUMITOMO, or any other leading brand, we've got you covered. 

Contact a Parts Specialist today at +8613023501555 for more information.

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