Open  cross-section thin-section bearings are precision open thin-wall bearings without seals. Their core feature lies in constant cross-sectional dimensions: as the inner diameter varies, the cross-sectional thickness of the bearing remains unchanged, differentiating them from conventional variable cross-section bearings.

Without dust shields or sealing rings, the fully open structure delivers rapid heat dissipation and smooth lubrication. Featuring high precision, low friction, high rotational speed and lightweight design, these bearings are widely adopted in precision equipment including robots, automation machinery, optical instruments, medical devices and aerospace equipment, serving as core components for lightweight upgrading of high-end precision machinery.

Specifications & Parameters

All standard inch-series models are mass-produced, with customisation available for non-standard sizes, ultra-high precision grades and special material requirements.

Inner diameter range: 1 in – 40 in (25.4 mm – 1016 mm)

Cross-section sizes: 0.1875 × 0.1875 in to 1.0 × 1.0 in

Precision grades: Standard, P6, P5, P4 ultra-precision

Structural types: Radial contact, angular contact, four-point contact

Operating temperature: -40 ℃ to 120 ℃ (standard version); custom high/low-temperature variants are available

Application Fields

Leveraging their high precision and lightweight advantages, open equal cross-section thin-section bearings are extensively used in a full range of high-end precision equipment:

Intelligent Equipment: Industrial robot joints, servo rotary tables, precision indexing plates

Automation Equipment: Precision rotary mechanisms, inspection equipment, conveying machinery

Optical Equipment: Laser equipment, precision lens rotating assemblies, optical detection instruments

Medical Devices: Imaging equipment, precision minimally invasive instruments, medical transmission assemblies

Aerospace: Onboard precision instruments, lightweight transmission equipment

Other Equipment: Precision machine tools, 3D printing equipment, high-end light industrial machinery