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Radial Hydrostatic Bearing
Typical applications
Ultra-precision machining: nano-level machine tool spindles, optical mirror grinders
Aerospace: satellite attitude control bearings, aircraft engine test benches
Energy equipment: large hydroelectric generator sets, nuclear main pump bearings
Scientific research instruments: electron microscope turntable, laser interferometer
Intelligent manufacturing: industrial robot RV reducer, semiconductor wafer equipment
Core advantages
Micron-level precision: oil film thickness is precisely controllable (1-50μm)
Ultra-high load: unit area load capacity can reach 30MPa
Zero wear operation: theoretical life can reach more than 100,000 hours
Vibration suppression: inherent damping is 3-5 times higher than traditional bearings
Excellent energy efficiency: friction power consumption is reduced by more than 90%
Environmental adaptability: supports high temperature conditions from -196℃ (liquid nitrogen) to 300℃
Radial hydrostatic bearing technology analysis
Working principle
Radial hydrostatic bearings use an external oil supply device to press the lubricating medium into the bearing gap to form a stable hydraulic oil film. The static pressure effect generated by the oil film effectively isolates the contact of the friction pair and achieves a nearly zero-friction operating state. This non-contact support method is particularly suitable for industrial scenarios with strict requirements on precision and stability.
Common brands
SKF Radial hydrostatic bearings
FAG Radial hydrostatic bearing
INA Radial hydrostatic bearing
NSK Radial hydrostatic bearing
NTN Radial hydrostatic bearing
TIMKEN Radial hydrostatic bearing
NACHI Radial hydrostatic bearing
KOYO Radial hydrostatic bearing
Typical application areas
Precision manufacturing equipment
Ultra-precision machine tool spindle system
High-precision grinding equipment rotation mechanism
Aerospace equipment
Aeroengine test platform
Spacecraft attitude control device
Energy power system
Large generator support components
Deep-sea drilling equipment transmission mechanism
Measurement and detection instruments
Nano-level optical detection equipment
Precision metrology instrument turntable
Intelligent equipment system
Industrial robot precision joints
Automated production line transmission unit
Core technical advantages
Nano-level precision: Oil film support eliminates mechanical contact and achieves sub-micron operation accuracy
Excellent load-bearing performance: The hydraulic system can provide a support pressure of up to 100MPa
Ultra-smooth operation: The oil film damping effect effectively suppresses vibration, and the operating noise is less than 40dB
Ultra-low energy consumption characteristics: The friction coefficient is as low as 0.001, and the energy saving effect is Significant results
Extremely long service life: contact-free wear design increases service life by 5-8 times
Environmental adaptability: can work stably in a wide temperature range of -50℃ to 200℃
Common troubleshooting solutions
Oil film failure problem
Cause: abnormal oil supply pressure or oil circuit blockage
Countermeasures: install pressure monitoring device and clean the oil circuit regularly
Lubrication performance deterioration
Cause: oil contamination or deterioration
Countermeasures: establish a regular oil inspection system and adopt a multi-stage filtration system
Abnormal temperature rise
Cause: insufficient cooling or overload operation
Countermeasures: optimize cooling system design and install temperature alarm device
Vibration exceeds the standard
Cause: assembly deviation or oil film parameter mismatch
Countermeasures: use laser alignment instrument to calibrate and adjust oil film thickness parameters
Technical summary
Radial hydrostatic bearings, one of the plain bearings, with their revolutionary non-contact support technology, have shown irreplaceable advantages in the field of high-end equipment manufacturing. This technology perfectly solves the industry problem of high precision, high load and long life through precisely controlled hydraulic oil film. Its performance advantages are particularly prominent in cutting-edge fields such as precision machining and aerospace. Reasonable system design combined with scientific maintenance plans can keep bearing performance in the best condition at all times, providing reliable technical support for modern industrial equipment.