| Customization: | Available |
|---|---|
| Vibration: | Zv1 Zv2 Zv3 |
| Hardness: | HRC60--62 |
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UJK spherical plain bearings (also called joint bearings) enable precise angular misalignment (±3°-15°) and rotational/swiveling motion under extreme loads, vibration, and harsh environments. Designed with a spherical sliding contact surface (inner ring + outer ring), they eliminate rolling elements to deliver unmatched impact resistance and durability where conventional ball/roller bearings fail.
| Feature | Radial Type (GE/GEM) | Angular Contact Type (SI/SAC) |
|---|---|---|
| Load Direction | Radial + Light Axial | Combined Radial + Heavy Unidirectional Axial |
| Misalignment | ±10°-15° | ±3°-8° |
| Friction Reduction | PTFE/Glass Fiber Composite Liner (Self-Lubricating) | Maintenance-Free Metallic Sliding Surface |
| Robustness | Shock Load Resistant (3× Higher vs. Roller Bearings) | Corrosion-Resistant (Stainless Steel Options) |
| Installation | Simple Press-Fit Housing | Flanged/Threaded Outer Ring for Secure Mounting |
(Conforms to ISO 12240 & DIN 648 standards)
| Series | Structure | Bore Range (mm) | Static Load (C) | Dynamic Load (C) | Liner Material | Applications |
|---|---|---|---|---|---|---|
| GE..C/E | Radial, Self-Lubricating | 6-300 | 8-4,500 kN | 3-1,800 kN | PTFE + Fiber Composite | Hydraulic Cylinders, Valves |
| GEP..FS | Radial, Sealed | 10-120 | 12-1,200 kN | 5-480 kN | PTFE + Bronze Sintered | Agriculture Machinery (Pivots) |
| SI..ES | Angular Contact | 15-200 | 25-3,800 kN | 10-1,500 kN | Hardened Steel/SS304 | Crane Hooks, Linkages |
| SAC..D | Axial + Angular | 20-180 | 40-4,200 kN | 16-1,700 kN | CuZn25Al5 Bronze | Construction Boom Joints |
| GX..T/K | Rod Ends | M6-M48 | 2-180 kN | 0.8-72 kN | PTFE/Chromium Steel | Steering Systems, Actuators |
Self-Lubricating Innovation
GE..C Series: Embedded PTFE/fiber liners operate at -40°C to +260°C without relubrication.
Dry-Running Capability: Ideal for food/pharma applications where oil/grease is prohibited.
Extreme Environment Resilience
Corrosion Resistance: 316L stainless steel options for marine/chemical exposure.
Sealed Variants (GEP..FS): Triple-lip seals block abrasive particles in mining/construction.
Precision Machining
Spherical surfaces ground to ≤0.002 mm tolerance for smooth articulation.
Hardened raceways (HRC 58-62) resist denting under impact loads.
Heavy Machinery: Excavator boom joints (SAC series), conveyor tensioners (GE series).
Automotive: Suspension linkages (GX rod ends), clutch release bearings.
Aerospace: Landing gear pivots, flap actuators (SiCr-coated variants).
Renewable Energy: Pitch/yaw bearings in wind turbines (GEP..FS sealed units).
Robotics: Articulated arm joints requiring ±15° misalignment.
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