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Spherical Plain Bearings.jpg
Spherical Plain Bearings.jpg

Durable Spherical Plain Bearings from China Suppliers and Factory for Enhanced Multi-Directional Alignment

Spherical plain bearings are engineered to provide exceptional multi-directional self-alignment while effectively supporting high radial loads, axial loads, and combined loads. These bearings comprise an inner ring featuring a convex spherical outer surface and an outer ring with a corresponding concave spherical inner surface, allowing for compensation of angular misalignment up to ±10–15°. As a leading manufacturer in China, our factory specializes in producing high-quality spherical plain bearings, ensuring that suppliers and distributors can rely on our products for superior performance and durability. Whether you require bearings for industrial applications or specific machinery, our solutions are designed to meet diverse needs effectively
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    Product Details

    Key Features

    🔄 Self-Aligning Capability

    Compensates for static and dynamic misalignment between shaft and housing.

    Eliminates edge stress caused by installation errors or shaft deflection.

    ⚖️ Load Capacity

    · Radial Type: Primarily handles radial loads (e.g., GE…E series).

    · Angular Contact Type: Supports combined radial and axial loads (e.g., GAC…F series).

    · Thrust Type: Designed for pure axial loads (e.g., GX…F series).

    🔩 Sliding Contact Design

    Utilizes sliding motion (not rolling elements), ideal for low-speed, high-load applications.

    Low rotational speed requirement (typically < 100 rpm).

    🛠️ Maintenance Options

    · Maintenance-Free: Lined with self-lubricating materials (PTFE/fiber composite).

    · Lubricatable: Equipped with grease fittings for periodic relubrication (suffix -2RS or -C).

    Structure & Materials

    🔵

    Inner Ring: Hardened bearing steel (e.g., GCr15) with spherical outer surface.

    ⚪

    Outer Ring: Carbon steel with spherical inner surface.

    🧱

    Lining Material:

    · PTFE Composite: For dry or low-lubrication environments.

    · Phosphor Bronze: For high-temperature applications.

    · Nylon/PA66: Lightweight and corrosion-resistant.

    Types & Variants

    1. Radial Spherical Plain Bearings

    · Standard type (e.g., GE series).

    · With extended inner ring (e.g., GEEW series).

    2. Angular Contact Spherical Plain Bearings

    · For combined loads (e.g., GAC series).

    3. Thrust Spherical Plain Bearings

    · For axial loads only (e.g., GX series).

    4. Special Types

    · Rod Ends: Integrated with threaded shafts (e.g., SI…E series).

    · Maintenance-Free: Pre-lubricated and sealed (e.g., GE…ES series).

    Applications

    🏭 Industrial Machinery 🚗 Automotive 🌾 Agriculture 🏗️ Construction ✈️ Aerospace

    · Industrial Machinery: Hydraulic cylinders, piston pumps, injection molding machines.

    · Automotive: Steering systems, suspension linkages.

    · Agriculture: Harvesters, tractor implements.

    · Construction: Excavator booms, crane joints.

    · Aerospace: Landing gear, control surface linkages.

    Technical Specifications

    Parameter Details
    Misalignment Tolerance ±5° to ±15° (varies by series)
    Operating Temperature (Standard) -30°C to +80°C
    Operating Temperature (High-Temp) Up to +300°C (with special materials)
    Load Direction Radial, axial, or combined
    Standards ISO 12240-1, DIN 64807

    Selection Guidelines

    1. Load Type: Confirm radial/axial/combined load requirements.
    2. Misalignment: Determine angular compensation needs.
    3. Speed: Suitable for low-speed applications (< 100 rpm).
    4. Environment: Choose seals (e.g., -2RS for rubber seals) or corrosion-resistant coatings.
    5. Lubrication: Opt for maintenance-free designs in inaccessible or harsh environments.

    Advantages

    🔧
    Reduced Maintenance Self-lubricating options eliminate relubrication needs.
    💪
    High Durability Resists shock loads and vibrations.
    📐
    Compact Design Saves space compared to rolling-element bearings.
    💰
    Cost-Effective Long service life under extreme conditions.

    Frequently Asked Questions

    What is a spherical plain bearing and how does it differ from a rolling-element bearing?
    A spherical plain bearing uses sliding contact between a spherical inner ring and a matching outer ring, rather than rolling elements like balls or rollers. This makes it better suited for low-speed, high-load, and misalignment-prone applications where rolling bearings would experience edge stress or premature failure.
    What types of loads can spherical plain bearings handle?
    Depending on the series, they can handle radial loads (GE series), combined radial and axial loads (GAC series), or pure axial/thrust loads (GX series). Always confirm your load direction before selecting a bearing type.
    What is the maximum operating speed for spherical plain bearings?
    Spherical plain bearings are designed for low-speed applications, typically under 100 rpm. They are not suitable for high-speed rotating machinery. For higher speeds, rolling-element bearings are recommended.
    Do spherical plain bearings require regular lubrication?
    It depends on the type. Maintenance-free variants are lined with PTFE composite or similar self-lubricating materials and require no relubrication. Lubricatable variants include grease fittings (suffix -2RS or -C) for periodic maintenance, which is recommended in heavy-duty or high-cycle applications.
    What temperature range can spherical plain bearings operate in?
    Standard bearings operate from -30°C to +80°C. High-temperature variants using special materials such as phosphor bronze lining can withstand temperatures up to +300°C.
    Which industry standards apply to spherical plain bearings?
    Spherical plain bearings are manufactured in accordance with ISO 12240-1 and DIN 64807, ensuring dimensional consistency and interchangeability across different manufacturers and global supply chains.