LES 212 2F Extended Inner Ring Insert Bearing, Dual-Side 2F Mud-Proof Labyrinth

1. Product Overview

LES 212 2F heavy spherical outer insert bearing features fully extended bilateral inner ring, symmetric double set screws and two-sided 2F composite labyrinth seals, interchangeable with YAR212-2F standard model. The two-stage 2F seal adopts rotating metal flinger plus NBR rubber lip to block thick farm mud, crop straw residues and coarse workshop dust. Spherical outer ring provides ±2.5° self-aligning function to offset slight shaft installation deflection. Pre-filled with high-temperature heavy-duty grease and equipped with built-in relubrication nipple, widely matched to large grain combine harvesters, heavy rotary tillage machines, outdoor mine heavy conveyors and large construction rotary drive assemblies.

Get a quote within 24 hours for your project

2. Key Advantages

• 2F composite labyrinth seal throws off large solid impurities via metal flinger first, greatly reducing rubber lip abrasion compared with ordinary single-lip 2RS seals
• 120° symmetric double M10 set screws evenly clamp inner ring to shaft circumference, stable anti-slip under medium vibration and frequent forward-reverse rotation
• Fully extended long inner ring creates larger contact area with shaft, improving locking stability under long-time alternating rotation
• Spherical outer ring automatically compensates assembly misalignment to avoid abnormal internal bearing stress
• Reserved grease filling port supports regular supplementary lubrication to extend continuous heavy-load service cycle
• GCr15 bearing steel with complete heat treatment ensures stable heavy radial load bearing capacity
• Standard 60×110×65.1mm dimensions fit all standard cast iron bearing housings for direct replacement

Helps reduce maintenance cost and improve machine performance

3. Applications

This bearing is widely used in:

• Large grain combine harvester main roller supports
• Heavy agricultural rotary tillage transmission shafts
• Outdoor industrial heavy-duty mine conveyor roller units
• Large construction machinery outdoor rotary drive components
• Muddy outdoor large log feeding woodworking equipment

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 manufacturing experience of long inner ring double set screw 2F sealed spherical insert bearings
• Products exported to more than 50 countries worldwide
• Custom OEM services for anti-rust coating and modified sealing structures
• Complete multi-process inspection for mud resistance, 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 test
• Double set screw locking anti-slip vibration impact 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 heavy mud-proof long inner ring double set screw 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 anti-rust and sealing optimization solutions
• Direct factory price without intermediate markup

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8. FAQ