UEF203 2S Square 4-Bolt Flange Bearing Unit, Double 2S Reinforced Rubber Dustproof Seals

1. Product Overview

UEF 203 2S four-bolt square flange bearing unit, matched with UE203-2S set screw insert bearing. Equipped with double-sided 2S thickened NBR double lip rubber contact seals and two symmetric M6 set screws on inner ring. Spherical outer ring provides ±2.5° self-alignment to compensate shaft installation offset. Dual-layer rubber barrier effectively blocks fine dust, light mud splashes, water vapor and debris. Pre-filled long-life high temperature grease, side grease nipple supports periodic re-lubrication. Widely used on small agricultural machinery, light-duty belt conveyors, packaging mini equipment, textile small transmission rollers.

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2. Key Advantages

• Dual 2S double lip rubber seals form dual anti-pollution barrier, reduce grease leakage and extend bearing service cycle
• Two symmetric M6 set screws evenly lock inner ring, stable anti-slip under continuous light vibration, fit forward & reverse rotation
• HT200 cast iron square four-bolt flange housing, compact flat mounting structure, easy installation and disassembly
• Spherical outer ring automatically corrects shaft misalignment, eliminates extra internal stress, lowers operation wear and noise
• Side grease fitting supports regular supplementary lubrication for long-hour continuous running
• GCr15 fully heat-treated bearing steel, stable light radial load capacity, compact small size
• Standard 17×40mm metric dimension, fully interchangeable with single-seal UEF203 bearing units for sealing upgrade

Lower maintenance frequency and stable operation of light-duty small machinery

3. Applications

• Small rotary tillers, mini grain sorting equipment, small lawn maintenance machinery
• Light-duty belt conveyors, small packaging production lines
• Mini textile looms, light food processing transmission rollers
• Light industrial equipment working in slightly dusty, humid indoor environments

4. Technical Specifications

Dimension drawings and technical data sheets can be provided upon request

5. Why Choose GQZ Bearing

• 25+ years professional manufacturing of double sealed four-bolt flange bearing units
• Products supplied to more than 50 countries worldwide
• Custom OEM anti-rust coating, surface paint and personalized sealing schemes
• Full pre-delivery inspection including dust resistance, locking tightness and load durability test
• Fast formal quotation and one-on-one professional technical support within 24 hours for all RFQs
• Stable mass production supply chain for long-term bulk orders

We provide consistent stable quality, on-time delivery and long-term win-win cooperation

6. Quality Assurance

• Raw bearing steel composition and hardness inspection
• High-precision raceway grinding and surface roughness detection
• Double rubber seal dust resistance cycle durability test
• Set screw anti-slip vibration impact test
• Dynamic load and low-noise continuous rotation performance test
• Final dimension sorting and full visual appearance inspection before packaging

All bearing units pass strict multi-process quality checks before shipment

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