LKF212-2F 4-Bolt Flange Bearing With H2312 Sleeve, Double 2F Mud-Proof Seals

LKF212-2F+H2312 full square flange bearing assembly includes F212 cast iron 4-bolt housing, UK212-2F tapered bore insert bearing and complete H2312 adapter kit (KM12 lock nut + MB12 lock washer). Double-sided 2F flinger-rubber two-stage composite seals block mud, crop debris, dust and cooling water splashes. The 1:12 taper sleeve fits smooth 55mm plain shafts without stepped shaft machining, provides uniform full-circle clamping force for bidirectional rotation. Spherical outer ring delivers ±2.5° self-alignment to eliminate shaft installation offset stress. Side grease nipple supports periodic re-lubrication. Widely used on large grain harvesters, heavy belt conveyors, grain sorting lines and feed processing equipment.

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• Dual 2F anti-fouling sealing system: Outer metal flinger throws off mud clumps via centrifugal rotation; inner NBR double-lip rubber blocks fine dust and water mist, far better anti-mud performance than single 2S rubber seals for muddy field environments.
• H2312 taper sleeve locking: Even full-shaft clamping, no surface scratches, stable anti-loose under long heavy vibration and frequent forward/reverse rotation.
• HT200 grey cast iron square flange housing, high rigidity, thick wall anti-impact, quick bolt mounting and disassembly for maintenance.
• ±2.5° self-aligning spherical outer ring automatically compensates assembly misalignment, reduces abnormal wear and running noise.
• Reserved side grease fitting for regular supplementary lubrication, extends bearing service life and cuts equipment downtime.
• GCr15 fully heat-treated bearing steel, high load capacity, excellent wear & impact resistance for non-stop heavy-duty operation.
• Standard unified metric dimensions, fully interchangeable with single-seal LKF212+H2312 for direct mud-proof upgrade.

Lower maintenance cost and guarantee stable transmission of heavy agricultural & industrial machinery

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

Dimension drawings and spec sheets can be provided upon request

• 25+ years professional manufacturer of tapered bore flange bearing + adapter sleeve integrated sets.
• Every batch passes mud resistance aging, vibration endurance and heavy load durability tests before delivery.
• Support OEM custom anti-rust coating, housing paint color, special grease 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 of global machinery manufacturers.

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

• 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
• H2312 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 212 2F + H2312 bearing assemblies pass multi-process strict quality inspection before shipment