LKF211-2F 4-Bolt Flange Bearing With H2311 Sleeve, Double 2F Mud Seals

1. Product Overview

LKF211-2F+H2311 integrated flange bearing set includes F211 cast iron square housing, UK211-2F tapered bore insert bearing and complete H2311 adapter sleeve kit. Double-sided 2F flinger-rubber composite seals block mud, dust and water splash. The 1:12 taper sleeve fits smooth 50mm plain shafts perfectly, without shaft step processing. Spherical outer ring offers ±2.5° self-alignment to fix shaft installation offset. Side grease nipple supports re-lubrication. Widely used on agricultural harvesters, heavy conveyors, grain processing and light mining transport equipment.

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2. Key Advantages

• Dual 2F two-stage anti-mud sealing: Metal flinger repels large mud clumps, inner rubber lip blocks fine dust and mist, far better than single 2S seals for muddy field conditions.
• H2311 taper sleeve locks shaft evenly around full circumference, no shaft scratch, stable for forward & reverse rotation under heavy vibration.
• HT200 cast iron 4-bolt square housing, high rigidity, easy bolt mounting and disassembly for maintenance.
• ±2.5° self-aligning design eliminates assembly stress, cuts abnormal wear and running noise.
• Grease fitting for regular lubrication, extends bearing service life and reduces downtime.
• GCr15 heat-treated bearing steel, strong load & impact resistance for long-hour heavy-duty running.
• Standard metric overall dimensions, fully interchangeable with single-seal LKF211+H2311 for direct upgrade.

Cut maintenance costs and guarantee stable operation of heavy farm & industrial machines

3. Applications

• Large grain harvesters & rotary tillers
• Heavy belt conveyors, grain drying & sorting lines
• Feed processing machinery, light mining transport rollers
• Dusty, humid, muddy indoor and semi-outdoor equipment

4. Technical Specifications

Drawings and spec sheets available on request

5. Why Choose GQZ Bearing

• 25+ years factory for tapered bore flange bearing & sleeve assemblies.
• Every batch passes mud resistance, vibration and load durability tests before shipment.
• Custom anti-rust coating, grease and sealing options for OEM orders.
• Fast quotation and one-on-one technical support within 24h for all RFQs.
• Stable mass production to support long-term bulk orders worldwide.

Factory direct price, consistent quality and on-time delivery for global buyers

6. Quality Assurance

• Raw steel hardness & composition inspection
• Raceway high-precision grinding test
• 2F seal mud splash aging cycle test
• H2311 sleeve anti-slip vibration impact test
• Continuous rotation low-noise load test
• Full dimension sorting & 100% appearance check before packing

All bearing sets pass multi-process strict inspection before delivery

7. CTA

8. FAQ

Q1: What’s the difference between 2F seal and 2S seal?

2F dual composite seal uses metal flinger + rubber lip two-layer barrier, much better anti-mud performance for outdoor muddy farm machines than single 2S rubber seals.

Q2: What shafts fit this bearing unit?

It works for standard smooth 50mm cylindrical shafts via H2311 taper sleeve, no stepped shaft needed.

Q3: Can it replace standard single-seal LKF211+H2311?

Yes, all mounting and shaft dimensions are fully universal, no equipment modification required during replacement.