UYF211-2S four-bolt square cast iron flange bearing unit, matched with YAR211-2S eccentric lock insert bearing with single-side extended inner ring. Double-sided thickened 2S NBR double-lip rubber contact seals block fine dust, water vapor and light debris. Eccentric locking collar tightly clamps the extended inner ring for stable one-way continuous rotation under heavy vibration. Spherical outer ring provides ±2.5° self-alignment to offset shaft assembly misalignment. Side grease nipple supports periodic re-lubrication. Widely used on agricultural harvesters, heavy belt conveyors, packaging machines and textile heavy transmission rollers.
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• Dual 2S double-layer rubber lip seals form dual dust-proof barrier, reduce grease leakage and extend bearing service cycle.
• Eccentric locking collar delivers uniform full-circle clamping force, anti-loosening under heavy vibration, no scratches on shaft surface.
• HT200 grey cast iron square four-bolt flange housing, high structural rigidity, flat surface for quick mounting & disassembly.
• Spherical outer ring automatically compensates shaft offset, eliminates extra internal stress, lowers wear and running noise.
• Side grease fitting enables regular supplementary lubrication for long-hour non-stop heavy load operation.
• GCr15 fully quenched bearing steel, stable heavy radial load capacity, compact footprint to save equipment layout space.
• Standard unified metric dimensions, fully interchangeable with single-seal UYF210 units for direct sealing upgrade.

Lower maintenance frequency and ensure stable continuous operation of heavy machinery

• Large grain harvesters & rotary tillers
• Heavy-duty belt conveyors, packaging production lines
• Feed processing equipment, textile heavy transmission rollers
• Indoor & semi-outdoor dusty, humid working equipment

Dimension drawings and spec sheets available on request

• 25+ years professional manufacturer of double sealed eccentric lock four-bolt flange bearing units.
• Each batch passes dust resistance, vibration and load durability tests before delivery.
• Support OEM custom anti-rust coating, housing paint and sealing optimization.
• Fast formal quotation and one-on-one technical support within 24h for all RFQs.
• Stable mass production capacity to meet long-term bulk order demands worldwide.

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

• Raw bearing steel hardness & composition inspection
• High-precision raceway grinding roughness test
• Double rubber seal dust resistance cycle aging test
• Eccentric collar anti-slip vibration impact test
• Low-noise continuous rotation heavy load test
• Full dimension sorting & 100% appearance inspection before packing

All UYF 211 2S bearing units pass multi-process strict inspection before shipment