SE12 Slewing Bearing
2 week ago
Product details
Slewing drive is a full cycle rotary reduction transmission mechanism that integrates a driving power source. It uses a rotary bearing as the driving follower and mechanism attachment, and attaches an active component, driving source, and cover to one of the inner and outer rings of the rotary bearing. The other ring is used as both the driving follower and the connecting base of the driven working component. This makes use of the characteristic that the rotary bearing itself is a full cycle rotary connection, Efficiently configuring the driving power source and main transmission components, making it a universal deceleration transmission mechanism that integrates rotation, deceleration, and driving functions, while also having a simple structure and easy manufacturing and maintenance.
SE12 Slewing Bearing: Technical Overview & Application Guide
I. Product Overview
TheSE12 slewing bearingis ahigh-precision, large-diameter turntable bearingoptimized forapplications requiring ultra-smooth rotation, high stiffness, and minimal maintenance. It features adouble-row ball + single-row roller hybrid design(axial/radial/tilting moment support),integrated precision gearing, andadvanced sealing systems, making it ideal foraerial work platforms, robotic arms, and precision telescopes.
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II. Core Parameters & Performance
【表格】
Specification Technical Details Explanation
Bearing Type Hybrid (Double-row Ball + Single-row Roller) Combines axial/radial ball support with tilting moment roller support.
Outer Diameter (D) 800–3000 mm (customizable) Designed for medium-to-large equipment (e.g., robotic arms, telescopes).
Bore Diameter (d) 400–1500 mm Matches precision shafts and gearboxes.
Height (H) 100–250 mm Thinner design for lightweight applications.
Dynamic Load Rating 1000–10,000 kN (axial/radial) Handles moderate-to-heavy cyclic loads (e.g., construction cranes).
Static Load Rating 2000–20,000 kN (axial/radial) Supports massive stationary loads (e.g., radar systems).
Gear Type External/Internal Gear (Module 4–12) External gear for high-precision drive systems; internal for compactness.
Sealing System Dual-lip rubber seals + labyrinth Prevents dust/water ingress (IP66 optional).
Lubrication Method Grease (manual/centralized) Required for low-speed/temperature applications (up to 120°C).
Material 50Mn/42CrMo4 alloy steel High-strength, case-hardened steel for precision and durability.
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III. Technical Features & Advantages
1. Hybrid Design for High Precision & Load Capacity
• Double-row ball sectionhandles axial/radial loads with low friction (e.g., robotic arms).
• Single-row roller sectionsupports tilting moments (e.g., telescopes).
2. Enhanced Stiffness & Minimal Backlash
• Preloaded racewaysreduce clearance under load.
• Optimized ball/roller spacingprevents edge loading.
3. Advanced Sealing & Low-Maintenance Design
• Dual-lip rubber seals+labyrinth channelsblock dust/water.
• Grease-lubricatedfor long-term reliability (re-lubrication intervals up to 1 year).
4. High-Speed & Low-Noise Operation
• Low-friction ball pathsreduce energy loss and noise (≤65 dB).
• Precision-ground gear teethensure smooth rotation.
5. Modular Customization for Specialized Needs
• Gear module, pitch diameter, and sealing typeadjustable per application.
• Explosion-proof(ATEX-certified) models for hazardous environments.
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IV. Typical Applications
1. Aerial Work Platforms & Construction
• Mobile cranes, cherry pickers, and telehandlersfor 360° rotation under load.
• Tunnel boring machines (TBMs)for underground drilling.
2. Robotics & Automation
• Industrial robotic arms, CNC rotary tables, and packaging machinesfor precise positioning.
• AGV (Automated Guided Vehicle) steering systemsfor flexible logistics.
3. Aerospace & Defense
• Satellite antennas, radar systems, and missile launchersfor continuous rotation.
• Military drones(armored, shock-resistant models).
4. Renewable Energy & Wind Turbines
• Small-to-medium offshore wind turbines (≤5 MW)for yaw/pitch systems.
• Solar tracker systemsfor optimal sunlight alignment.
5. Medical & Scientific Equipment
• CT scanners, MRI machines, and particle acceleratorsfor ultra-smooth rotation.
• Astronomical telescopesfor precise celestial tracking.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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3 year
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