LYS 208 2F Spherical Outer Insert Ball Bearing, Eccentric Lock Collar &

1. Product Overview

LYS 208 2F is a large metric spherical outer insert ball bearing with bilateral 2F composite labyrinth sealing assembly and integrated eccentric locking collar, interchangeable with YEL208-2F standard series. Unlike set-screw locked LES/LSS series, its offset eccentric collar wraps the full shaft circumference to achieve uniform clamping force, which resists slipping under heavy alternating impact and vibration loads. The exclusive 2F dual-stage sealing system combines outer metal anti-mud flinger and inner NBR rubber contact lip, forming double barriers to block thick farm mud, crop straw debris, coarse mine dust and splashing cooling water. Factory pre-filled with high-temperature heavy-duty grease and reserved built-in relubrication nipple, this bearing is widely installed on large grain combine harvesters, heavy rotary tillage equipment, outdoor mine auxiliary belt conveyors and medium construction machinery rotary drive units.

Get a quote within 24 hours for your project

2. Key Advantages

• 2F dual composite labyrinth seal intercepts large solid impurities via rotating metal flinger first, drastically reducing abrasion of inner rubber lip compared with ordinary single-lip 2RS contact seals
• Eccentric locking collar provides full circumferential shaft clamping force, far superior anti-slip effect to double set screws under heavy vibration and frequent forward-reverse rotation cycles
• Spherical outer ring delivers ±2.5° self-aligning capacity to compensate minor shaft deflection and housing assembly offset errors, eliminating abnormal bearing stress
• Built-in grease nipple supports periodic supplementary lubrication to extend continuous heavy-load running service cycle
• GCr15 high carbon chromium bearing steel undergoes standardized quenching and tempering for stable large radial load bearing capacity
• Standard 40×80×56.3mm dimensional specifications fully interchangeable with YEL208-2F series for all standard cast iron UCP/UCF/UCFL bearing housings

Helps reduce maintenance cost and improve machine performance

3. Applications

This bearing is widely used in:

• Large grain combine harvester main roller support assemblies
• Heavy agricultural rotary tillage and soil preparation transmission shafts
• Outdoor industrial heavy-duty mine auxiliary belt conveyor roller units
• Medium-size construction machinery outdoor rotary drive components
• Outdoor large woodworking log feeding rotary equipment under muddy working conditions

Ideal for customers looking for reliable and long-life bearing solutions

4. Technical Specifications

Full technical data and drawings available upon request

5. Why Choose GQZ Bearing

• 25+ years professional manufacturing experience of eccentric collar locked 2F labyrinth sealed spherical insert bearings
• Products exported to more than 50 countries worldwide
• Custom OEM services for special anti-rust coating and modified sealing structures
• Complete multi-process inspection for mud resistance, eccentric locking tightness and load performance before shipment
• Fast professional technical reply within 24 hours for all customer inquiries
• Stable mass production supply chain for long-term bulk order cooperation

We focus on quality, reliability, and long-term partnership

6. Quality Assurance

• Raw bearing steel composition and hardness inspection
• Raceway ultra-precision grinding and surface roughness testing
• 2F composite labyrinth seal anti-mud durability cycle fatigue test
• Eccentric collar locking anti-slip vibration impact fatigue inspection
• Dynamic load capacity and low-noise rotation performance test
• Final dimension sorting and visual appearance check before packing

Ensuring stable performance of each bearing

7. CTA

Get a Quote Now

Looking for a professional supplier of large heavy mud-proof eccentric locking 2F sealed insert bearings?

Send your inquiry to get:

• Fast formal quotation within 24 hours
• One-on-one technical support from bearing professional engineers
• Custom surface anti-rust and sealing optimization solutions
• Direct factory price without intermediate markup

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8. FAQ