1500mm径旋回ベアリング

油圧ショベル用旋回ベアリング

Excavator Swing Bearing | High-Performance Slewing Drive for Heavy Machinery

As a premier manufacturer in the ZZ industry, we understand that the excavator swing bearing (also known as a slewing ring or swing circle) is the critical "joint" of your machinery. It connects the upper structure to the undercarriage, bearing immense loads while ensuring smooth, precise rotation.
Our swing bearings are engineered to withstand the harshest operating environments, delivering the durability and reliability required for modern construction and mining equipment.

🏗️ Product Overview & Performance

Our excavator swing bearings are designed to support complex loading conditions simultaneously. Unlike standard bearings, our slewing rings are capable of handling:
  • High Axial Loads: Vertical forces from the machine's weight and digging resistance.
  • Radial Loads: Horizontal forces generated during side-to-side movement.
  • Overturning Moments: The tilting forces created when the excavator arm extends and lifts heavy loads.
Why Choose ZZ Swing Bearings?
  • Superior Load Capacity: Utilizing advanced raceway hardening (HRC 55-62) and optimized roller/ball geometry to maximize static and dynamic load ratings.
  • Precision Rotation: Manufactured with tight tolerances to ensure smooth slewing motion without "stick-slip" phenomena, essential for fine control during operation.
  • Integrated Gear Options: We offer high-precision external or internal gearing (teeth) that meshes perfectly with your excavator's swing motor pinion, ensuring efficient torque transmission.
  • Robust Sealing: Multi-lip rubber seals are standard, effectively preventing the ingress of dust, mud, and water while retaining grease, significantly extending service life.

⚙️ 技術仕様

We manufacture a wide range of excavator swing bearings, from compact mini-excavators to massive mining shovels. Our standard series include Single-Row Four-Point Contact Ball Bearings, Double-Row Ball Bearings, and Crossed Roller Bearings.
Standard Excavator Swing Bearing Parameters
技術仕様 仕様範囲 注意事項
内径 200mm - 2500mm+ Custom large diameters available
Outside Diameter 250mm - 3000mm+ Fits standard housing dimensions
Height (Width) 40mm - 160mm Optimized for compact design
材質 42CrMo / 50Mn / 100Cr6 High-strength alloy steel
硬度 HRC 55～62 Induction hardened raceways
最大20,000 kN·m External / Internal / No Gear Precision cut teeth (Module m2-m20)
シール NBR / Viton Dust-proof and waterproof

🛡️ Quality Assurance & Certifications

At ZZ, quality is not just a promise; it is a process. Our manufacturing facility adheres to strict international standards to ensure every unit leaving our factory meets OEM specifications.
  • ISO 9001:2015 Certified: Our quality management system ensures consistent production standards.
  • Material Traceability: All steel raw materials come with Mill Test Certificates (MTC) to guarantee chemical composition and structural integrity.
  • Advanced Heat Treatment: We utilize medium-frequency quenching to harden raceways, providing superior wear resistance and fatigue life.
  • Precision Machining: CNC machining centers ensure that bolt hole patterns and gear teeth profiles meet exact tolerances (DIN/ANSI standards).

🛠️ 用途

While our primary focus is the excavator swing bearing, our slewing solutions are versatile and widely used across various heavy industries:
  • Construction Machinery: Hydraulic excavators, wheel loaders, and bulldozers.
  • Lifting Equipment: Truck cranes, crawler cranes, and tower cranes.
  • Infrastructure: Tunnel boring machines (TBMs) and concrete pump trucks.
  • 再生可能エネルギー：風力タービンのピッチ・ヨー駆動装置。
  • Industrial Automation: Robotic manipulators and rotary welding positioners.

🤝 ZZ Service & Support

We don't just sell bearings; we provide solutions. As a direct manufacturer, we offer:
  • OEM & ODM Services: We can reverse-engineer or custom-design swing bearings to match specific excavator models (e.g., Caterpillar, Komatsu, Hitachi, Volvo, SANY).
  • Fast Lead Times: Stock availability for common models and rapid production for custom orders.
  • Technical Consultation: Our engineering team assists with bearing selection, lubrication advice, and failure analysis.
  • After-Sales Warranty: Comprehensive warranty coverage and replacement support for defective units.

アフターサポート：取付ガイド、潤滑スケジュール、ライフタイムメンテナンスのアドバイスを提供します。

Q1: 油圧ショベルの旋回ベアリングが故障する兆候は何ですか？
A: 一般的な症状としては、旋回動作時の過度なバックラッシュ（遊び）や回転時の異音・クリック音、軌道面にできる視認可能な亀裂、コロの固着による旋回困難などが挙げられます。
Q2: ベアリングにギア（歯）は付属しますか？
A: はい。当社では、外歯または内歯をリングに直接切削したタイプ、または機械の設計に応じて歯なしの「ブランク」リングも製造しております。
Q3: 油圧ショベルの旋回ベアリングの標準的なリードタイムはどのくらいですか？
A: 標準モデルについては在庫を有していることが多いです。カスタム品や大口径品の場合、数量にもよりますが、通常の生産期間は20～30日です。
Q4: 旋回ベアリングに汎用グリースを使用してもいいですか？
A: 軌道面とギアの最適な潤滑を確保するため、高荷重旋回ベアリング専用に設計された高品質リチウムコンプレックスグリース（EP2）の使用をお勧めします。
Q5: ベアリングが私の油圧ショベルモデルに適合することを確認するにはどうすればいいですか？
A: 機械の型番、旧ベアリングの部品番号、または寸法（ボルトピッチ円直径、外径、高さ）が記載された技術図面をご提供ください。
A: もちろんです。ダクロメット、亜鉛ニッケルメッキ、ステンレス鋼オプションなど、塩水アプリケーション向けの特殊コーティングを提供しています。
信頼できる油圧ショベル用旋回ベアリングのサプライヤーをお探しですか？競争力のある見積りと技術データシートについては、今すぐお問い合わせください。あなたの機械の稼働を維持します。