LEF206 2F Square 4-Bolt Flange Bearing Unit, Double 2F Flinger-Rubber Anti-Mud Seals

1. Product Overview

LEF 206 2F four-bolt square grey cast iron flange bearing unit, matched with YEL206-2F 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. Eccentric locking collar clamps the double extended inner ring tightly for stable one-way continuous rotation. Spherical outer ring provides ±2.5° self-alignment to compensate shaft installation deflection and misalignment. Dual-layer sealing effectively blocks mud, crop residues, industrial dust and splashing water. Side grease nipple supports periodic re-lubrication, widely used on medium-heavy farm machinery, medium-duty belt conveyors, packaging and textile transmission equipment.

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2. Key Advantages

• Dual 2F anti-contamination sealing system: Outer metal flinger throws mud and coarse debris away by centrifugal force; inner rubber lip isolates fine dust, moisture and water mist, far better anti-fouling performance than single 2S rubber seals in muddy semi-outdoor working environments.
• Eccentric lock collar delivers uniform full-circle clamping force, stable anti-slip under medium-heavy continuous vibration, no scratch damage on shaft surface, specially designed for constant single-direction rotation equipment.
• HT200 grey cast iron square four-hole flange housing, high structural rigidity, flat mounting surface for quick bolt fixing, compact overall size saves equipment layout space, easy disassembly for maintenance.
• ±2.5° self-aligning spherical outer ring eliminates extra internal stress caused by shaft offset, reduces abnormal bearing wear and running noise.
• Reserved side grease fitting enables regular supplementary lubrication, extends bearing service cycle and cuts equipment maintenance downtime.
• GCr15 fully heat-treated bearing steel with stable medium-heavy radial load capacity, excellent wear and impact resistance.
• Standard unified metric dimensions, fully interchangeable with single-seal LEF206 bearing units for direct heavy mud-proof sealing upgrade.

Reduce maintenance workload and ensure long-term stable operation of medium-heavy agricultural & industrial machinery

3. Applications

• Medium-heavy rotary tillers, grain harvesters, grain drying & sorting production lines
• Medium-duty belt conveyors, feed processing machinery
• Textile looms, food processing heavy transmission rollers
• Indoor & semi-outdoor equipment operating in dusty, humid and muddy 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 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 medium-heavy duty bearing 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