LEF220-2F 4-Bolt Flange Bearing, Eccentric Lock, Double 2F Mud-Proof Seals

1. Product Overview

LEF220-2F four-bolt square cast iron flange bearing unit, matched with YEL220-2F double extended inner ring eccentric lock insert bearing. Double-sided 2F composite seal adopts metal flinger + NBR lip two-stage barrier to block mud, crop residues, heavy dust and cooling water splashes. Eccentric locking collar tightly clamps double extended inner ring for stable single-direction rotation under long heavy vibration. Spherical outer ring offers ±2.5° self-alignment to compensate shaft assembly misalignment. Side grease nipple supports periodic supplementary lubrication. Widely used for super-large grain harvesters, heavy belt conveyors, grain sorting lines and heavy feed processing equipment.
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2. Key Advantages

• Dual 2F anti-fouling sealing system: Outer metal flinger throws mud clumps via centrifugal force; inner rubber lip blocks fine dust and water mist, far superior anti-mud performance than single 2S rubber seals for muddy outdoor working conditions.
• Eccentric collar delivers uniform full-circle clamping force, reliable anti-loosening under continuous heavy vibration, no scratches on shaft surface, specially designed for fixed single rotation heavy-duty equipment.
• HT200 grey cast iron square flange housing, ultra-high integral rigidity, extra thick wall anti-impact, quick bolt mounting and disassembly for easy routine maintenance.
• ±2.5° self-aligning spherical outer ring eliminates assembly offset internal stress, reduces abnormal bearing friction, wear and running noise.
• Reserved side grease fitting hole for regular grease replenishment, extends bearing service life and cuts equipment shutdown maintenance downtime.
• GCr15 fully heat-treated bearing steel, ultra-high dynamic & static load capacity, excellent wear resistance and impact resistance for long-hour non-stop heavy-duty operation.
• Standard unified metric dimensions, fully interchangeable with single-seal LEF220 for direct heavy mud-proof sealing upgrade.

Reduce maintenance frequency and guarantee stable long-term operation of super heavy farm & industrial machinery

3. Applications

• Super large grain harvesters, heavy field rotary tillers
• Heavy-duty belt conveyors, grain drying & sorting production lines
• Large feed processing equipment, light mining transport rollers
• Dusty, humid, muddy indoor and semi-outdoor super heavy production equipment

4. Technical Specifications

Dimension drawings and spec sheets can be provided upon request

5. Why Choose GQZ Bearing

• 25+ years professional manufacturer of 2F sealed eccentric lock four-bolt flange bearing units.
• Every batch passes mud resistance aging, vibration endurance and heavy load durability tests before delivery.
• Support OEM custom anti-rust coating, housing paint color and sealing upgrade schemes.
• Fast formal quotation and one-on-one professional installation technical support within 24h for all RFQs.
• Stable mass production capacity to meet long-term bulk order demands from global machinery manufacturers.

Factory direct price, consistent stable quality and on-time batch delivery for overseas buyers

6. Quality Assurance

• Raw GCr15 bearing steel hardness & chemical composition inspection
• HT200 cast iron housing tensile strength & toughness test
• High-precision raceway grinding surface roughness inspection
• 2F double composite seal mud splash cycle aging durability test
• Eccentric collar anti-slip vibration impact test
• Low-noise continuous rotation heavy load performance test
• Full dimension sorting & 100% visual appearance inspection before packing

All LEF 220 2F bearing units pass multi-process strict quality inspection before shipment

7. CTA

Get Quote Now

Looking for factory direct LEF220-2F double mud-proof eccentric lock four-bolt flange bearings for super heavy farm & industrial machinery?
Send your inquiry to receive:

• Formal detailed quotation within 24 hours
• Professional installation drawings & technical guidance
• Custom anti-rust treatment and sealing modification service
• Wholesale factory price without intermediate markup

Contact us anytime for bulk cooperation

8. FAQ

1. Q1: What’s the advantage of 2F seal over single 2S rubber seal?
   2F two-stage composite seal first repels large mud blocks by centrifugal metal flinger, then isolates tiny dust and water mist with inner rubber lip, effectively preventing mud intrusion for outdoor agricultural machines working in muddy fields.
2. Q2: What machinery fits LEF 220 2F?
   Super heavy equipment with 4-hole flat mounting base running in fixed single rotation, such as large harvesters, heavy conveyors and grain processing machines exposed to heavy mud and dust.
3. Q3: Can LEF 220 2F replace ordinary single-seal LEF220?
   Yes, inner bore, outer diameter and flange mounting dimensions follow unified international metric standards, no modification to equipment mounting base during replacement.