LKF218-2F 4-Bolt Flange Bearing with H2318 Sleeve, Double 2F Mudproof Seals

1. Product Overview

LKF218-2F+H2318 full square four-bolt flange bearing set consists of F218 cast iron housing, UK218-2F tapered bore insert bearing and full H2318 adapter kit (KM18 lock nut + MB18 lock washer). Double-sided 2F composite sealing adopts metal flinger + NBR double lip rubber two-stage barrier to block mud, crop waste, heavy dust and water splashes. The 1:12 taper bore paired with H2318 sleeve fits smooth 80mm solid shafts without stepped machining, providing full-circle uniform clamping force for stable forward and reverse rotation. Spherical outer ring offers ±2.5° self-alignment to compensate shaft installation misalignment. Side grease nipple allows regular re-lubrication. Widely used on large harvesters, heavy belt conveyors, grain sorting and heavy feed processing equipment.

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2. Key Advantages

• Dual 2F anti-contamination seal: Outer metal flinger throws off mud clumps by centrifugal force; inner rubber lip blocks fine dust and moisture, far better anti-mud performance than single 2S rubber seals for muddy field environments.
• H2318 taper sleeve locking: Even full-shaft compression without shaft scratches, anti-loose under long heavy vibration and frequent bidirectional rotation.
• HT200 grey cast iron square flange housing, high rigidity, thick wall anti-impact, quick bolt installation and easy disassembly for maintenance.
• ±2.5° self-align spherical outer ring eliminates assembly stress, reduces abnormal bearing wear and running noise.
• Side grease fitting for periodic supplementary lubrication, extends service life and cuts equipment downtime.
• GCr15 fully heat-treated bearing steel, high dynamic & static load capacity, good wear and impact resistance for non-stop heavy-duty running.
• Standard unified metric dimensions, fully interchangeable with single-seal LKF218+H2318 for direct mudproof upgrade.

Cut maintenance cost and ensure stable transmission of heavy farm & industrial machinery

3. Applications

• Large grain harvesters, heavy 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 heavy production equipment

4. Technical Specifications

Dimension drawings and spec sheets available on request

5. Why Choose GQZ Bearing

• 25+ years professional manufacturer of tapered bore flange bearing & adapter sleeve integrated assemblies.
• Every batch passes mud resistance aging, vibration endurance and heavy load durability tests before delivery.
• Support OEM custom anti-rust coating, housing paint, special grease and sealing improvement solutions.
• 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, stable quality and on-time batch delivery for overseas buyers

6. Quality Assurance

• Raw GCr15 steel hardness & composition inspection
• HT200 cast iron housing tensile strength test
• High-precision raceway grinding roughness inspection
• 2F double composite seal mud splash cycle aging test
• H2318 sleeve matching tightness & anti-slip vibration impact test
• Low-noise continuous rotation heavy load performance test
• Full dimension sorting & 100% visual appearance inspection before packing

All LKF 218 2F + H2318 bearing assemblies pass multi-process strict inspection before shipment

7. CTA

8. FAQ

Q1: What is the advantage of 2F seal over single-layer 2S rubber seal?

2F two-stage composite seal firstly repels large mud blocks via metal flinger, then isolates tiny dust and water mist by inner rubber lip, greatly lowering mud ingress risk for outdoor agricultural machines.

Q2: Which shafts fit this bearing unit?

It matches standard smooth 80mm cylindrical shafts with H2318 taper sleeve, no stepped shaft processing required.

Q3: Can LKF 218 2F + H2318 replace standard single-seal LKF218+H2318?

Yes, shaft size, flange mounting holes and overall outer dimensions follow universal metric standards, no equipment modification needed during replacement.