YAR208-2F Set Screw Insert Bearing 40mm Metric 2F Double Flinger Sealed Double

1. Product Overview

YAR208-2F heavy-duty spherical outer insert bearing features dual staggered set screw locking structure, standard metric 40mm bore and double extended inner ring. It perfectly matches UCP208, UCT208 and T208 sliding take-up bearing housings for large grain harvesters, heavy mining belt conveyors and outdoor heavy industrial machinery.

Suffix `2F` represents double-sided steel centrifugal flinger + multi-lip NBR rubber composite sealing system. It provides superior barrier against mud, crop stalk residues and splashing rainwater compared with ordinary single-layer rubber seals, specially optimized for severely dusty open-air farm and quarry working conditions.

Spherical outer ring delivers ±3° self-aligning compensation to offset shaft bending deformation, housing machining tolerances and assembly misalignment. Double widened inner ring restricts inner ring deflection on 40mm shafts, effectively reducing running vibration and noise during long-term continuous operation. Two 120° staggered set screws evenly clamp the transmission shaft to avoid inner ring slipping, applicable to both forward and reverse rotation equipment. An independent side M6 grease fitting supports regular supplementary lubrication without full disassembly of the bearing unit. Pre-filled high-viscosity anti-wear lithium grease adapts to humid, dusty outdoor environments. All rolling components are made of fully quenched GCr15 bearing steel with mirror superfinished raceways, featuring stable impact resistance and extended service life. Widely applied to grain sorting heavy conveyors, large feed mixing equipment, heavy lawn mowers, medium quarry belt conveyors and all heavy rotary machines equipped with 40mm metric shafts.

2. Technical Specifications

Metric shaft housing installation drawings, heavy load matching guide and long-cycle 2F flinger seal durability test reports can be provided upon customer request.

3. Core Advantages

• Double-side extended inner ring limits inner ring tilt on 40mm shafts, greatly cuts vibration and running noise during continuous operation, runs more smoothly than single-side widened insert bearings.
• Upgraded 2F dual steel flinger composite sealing system: outer steel flinger blocks mud clods and crop waste, inner multi-lip rubber seal isolates fine dust and splash water, perfectly suited for harsh outdoor farm and quarry sites.
• Dual staggered set screw locking evenly distributes clamping force on 40mm metric shafts, stable anti-slip performance under long-time strong vibration, works for both unidirectional and bidirectional rotation machinery.
• Spherical outer ring self-aligning function automatically compensates assembly deviation and shaft deflection, reduces extra shaft bending stress and local raceway peeling wear.
• Independent side relubrication grease nipple allows on-site grease replenishment without removing the whole bearing unit, lowering maintenance downtime during agricultural peak production seasons.
• Fully quenched rolling elements reach HRC60–65 hardness, excellent anti-indentation and contact fatigue resistance, significantly prolong service life of heavy conveyor tension rollers.
• Standard universal spherical outer dimension, fully interchangeable with global YAR208-2F series double extended inner ring set screw insert bearings, direct replacement for all standard 208 series bearing housings without structural modification.
• Complete customized service: P6 high precision upgrade, stainless steel anti-corrosion version, OEM laser marking on outer ring, neutral export carton anti-rust packaging, pre-filled high-temperature heavy-duty lithium grease.

4. Application Scenarios

YAR208-2F double 2F steel flinger sealed double extended inner ring set screw spherical insert bearing is high-performance dust-proof self-aligning rotary spare part for agricultural, mining and heavy industrial conveyor equipment with 40mm metric shafts:

• Large grain harvester threshing rollers, grain sorting heavy conveyor tension bearing assemblies with 40mm metric shafts
• Heavy feed mixing equipment, livestock breeding production line wet-dust heavy transmission matching units
• Heavy-duty lawn mowers, large orchard picking mobile machinery low-speed heavy-load rotary support positions
• Medium quarry belt conveyors, construction waste sorting outdoor heavy roller tension components
• Large farm irrigation fans, bulk fertilizer spreaders, greenhouse automatic heavy transport vibration bearings

Aftermarket interchangeable YAR series double extended inner ring 2F flinger sealed set screw metric insert bearing
Cost-effective anti-dust anti-splash vibration resistant heavy-load metric bearing solution for agricultural machinery manufacturers, heavy conveyor OEMs and farm maintenance workshops bulk procurement.

5. Why Choose GQZ Bearing

• 25 years professional manufacturing experience of YAR series double extended inner ring set screw spherical metric insert bearings including YAR208-2F
• YAR208-2F fully dimensionally interchangeable with international standard YAR208-2F insert bearings, consistent heavy load rating, 2F composite flinger sealing performance and set screw locking tolerance standards.
• Full OEM & ODM customization service supporting P6 precision grade and outdoor heavy dust-resistant special grease filling.
• Strict pre-delivery inspection process: GCr15 raw material metallographic & hardness test, steel ball dimensional sorting screening, long-cycle continuous vibration rotation aging test, repeated mud splash 2F seal fatigue wear simulation test.
• Professional insert bearing engineering team provides one-on-one radial-axial composite load calculation, UCP208/T208 housing matching selection and set screw installation torque technical guidance within 24 working hours.
• Stable mass production workshop with competitive factory direct bulk wholesale price for large single-model orders, long-term stable supply for global agricultural and mining conveying machinery spare parts buyers.

We specialize in double-side widened inner ring dual set screw locking metric bore insert bearing structure, advanced 2F steel flinger multi-layer composite dust-proof sealing plus relubrication design, universal interchangeable spherical installation dimension standard and long-term win-win cooperation with outdoor heavy-duty transmission equipment suppliers.

6. Quality Control

• Raw material chemical composition, internal flaw and hardness inspection for GCr15 bearing steel inner ring, outer ring and steel ball blanks
• Insert bearing precision integral forging, multiple tempering stress relief, multi-step ultra-precision spherical outer ring and inner deep raceway grinding process
• Steel ball high-temperature quenching, mirror polishing and high-precision automatic dimensional sorting production line
• Dual set screw precision tapping and surface finishing; 2F steel flinger + multi-lip rubber composite seal pressing and M6 grease nipple thread tapping assembly
• Targeted performance testing: YAR208-2F long-cycle heavy dust vibration rotation aging test, repeated mud splash flinger sealing durability test, continuous low-speed anti-slip wear detection
• Full dimensional tolerance, surface burr and composite sealing tightness recheck before anti-rust oil coating and export carton moisture-proof packaging shipment

Each production batch of YAR208-2F bearings undergoes sampling grain harvester heavy conveyor roller vibration simulation rotation test, ensuring stable long-term dust-proof anti-slip rotary support performance on outdoor farm and mining conveyor systems with 40mm metric transmission shafts.

7. Get A Quote Now

If you need YAR208-2F double 2F steel flinger sealed 40mm metric bore double extended inner ring set screw spherical insert bearings for agricultural machinery manufacturing, heavy conveyor tension unit assembly and farm/mining equipment maintenance bulk matching, send your purchase inquiry directly.

You will receive full professional supporting services after submitting inquiry:

• Official sealed formal quotation reply within 24 working hours
• One-on-one radial-axial composite load calculation, UCP208/T208 bearing housing matching and set screw locking installation torque technical guidance from professional bearing engineers
• Custom bearing performance solutions including P6 high precision upgrade and outdoor heavy dust-resistant grease options
• Competitive factory direct bulk wholesale price for large-volume YAR208-2F single model orders

Provide your required purchase quantity, equipment working environment (outdoor heavy dust/mud/splash water vibration) and continuous operating temperature to obtain detailed formal quotation documents.

8. FAQ