LYF205 2F Square 4-Bolt Flange Bearing Unit, Double 2F Flinger-Rubber Anti-Mud Seals

1. Product Overview

LYF 205 2F four-bolt square grey cast iron flange bearing unit, matched with YEL205-2F eccentric lock insert bearing with double extended inner ring. Double-sided 2F composite seal adopts centrifugal metal flinger + NBR rubber lip two-stage barrier structure, the outer flinger can throw off mud and coarse debris by centrifugal force, inner rubber lip blocks fine dust and moisture. Eccentric locking collar clamps the double extended inner ring tightly to realize stable single-direction rotation. Spherical outer ring provides ±2.5° self-alignment to compensate shaft installation misalignment. Dual-layer sealing blocks mud, crop dust, water splashes and workshop debris efficiently. Side grease nipple supports periodic re-lubrication, widely used on medium farm machines, medium belt conveyors, packaging and textile equipment.

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2. Key Advantages

• Dual 2F anti-contamination sealing system: Metal flinger throws away mud and dust via centrifugal force; inner rubber lip isolates fine particles and moisture, better anti-fouling performance than single 2S rubber seals in muddy working environments.
• Eccentric lock collar provides uniform full-circle clamping force, stable anti-slip under medium continuous vibration, no scratch damage on shaft surface, designed for constant single-direction rotation.
• HT200 cast iron square four-hole flange housing, high rigidity, flat mounting surface, easy installation and disassembly, compact overall size saves equipment layout space.
• ±2.5° self-aligning spherical outer ring eliminates extra internal stress caused by shaft deflection and assembly offset, reduces abnormal wear and running noise.
• Side grease fitting enables regular supplementary lubrication, extends service cycle and lowers maintenance frequency.
• GCr15 fully heat-treated bearing steel with stable medium radial load capacity, outstanding wear resistance.
• Standard 25×52mm metric dimension, fully interchangeable with single-seal LYF205 bearing units for direct heavy dust/mud sealing upgrade.

Reduce maintenance workload and ensure long-term stable operation of medium-duty machinery

3. Applications

• Medium rotary tillers, grain sorting equipment, lawn maintenance machinery
• Medium-duty belt conveyors, packaging production assembly lines
• Textile looms, food processing transmission rollers
• Indoor & semi-outdoor industrial equipment with dusty, humid and slightly muddy working conditions

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 2F sealed four-bolt square flange bearing units
• Products supplied to more than 50 countries worldwide
• Custom OEM anti-rust coating, surface paint and personalized sealing optimization schemes
• Full pre-delivery inspection covering mud 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 to meet long-term bulk order demands

We supply consistent stable quality, on-time delivery and long-term win-win cooperation with global buyers

6. Quality Assurance

• Raw bearing steel chemical composition and hardness inspection
• High-precision raceway grinding and surface roughness detection
• 2F double seal mud & dust resistance cycle aging durability test
• Eccentric collar anti-slip vibration impact test
• Dynamic load and low-noise continuous rotation performance test
• Full dimension sorting and 100% visual appearance inspection before packaging

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

7. CTA

8. FAQ