502312 RN312 Single Row Cylindrical Roller Bearing No Inner Ring Brass Cage 60x113x31mm Farm Compressor Equipment
The 502312 interchange RN312 is a single row cylindrical roller bearing without inner ring, open type without sealing structure, standard dimension 60×113×31mm. It features ultra-large radial load capacity and compact outer ring structure, directly matches quenched and ground shaft surface as inner raceway. Brass cage stabilizes roller operation, widely applied in agricultural machinery, air compressors, cranes, excavators and heavy industrial transmission assemblies.
???? Get a quote within 24 hours for your project| Parameter | Value |
|---|---|
| Model | 502312 (Interchange RN312) |
| Equivalent Inner Bore d | 60mm |
| Outer Ring Diameter D | 113mm |
| Bearing Width B | 31mm |
| Structure | Single row cylindrical roller bearing, no inner ring, outer ring without ribs |
| Cage | Solid machined brass cage (M1) |
| Material | GCr15 high carbon chromium bearing steel |
| Seal Type | Open without rubber shield or seal |
| Clearance | Standard C0, C3, C4 customizable |
| Net Weight | Approx 1.11kg |
- No inner ring design saves installation space, reduce overall mechanical structure volume
- Dense cylindrical roller layout delivers outstanding heavy radial load bearing performance
- Solid brass cage resists high temperature and impact, stable under continuous heavy-duty operation
- Separable outer ring and roller assembly for convenient disassembly and maintenance
- Standard universal size fully interchangeable with global RN312 / 502312 series bearings
- Stamped steel cage variant and enlarged clearance options available for customization
This inner-ring-free cylindrical roller bearing is widely matched to:
- Farm harvesters, agricultural rotary transmission and grain processing machinery
- Industrial air compressors, hydraulic pumps and construction crane moving parts
- Excavator auxiliary transmission shafts, mining light-duty reducer assemblies
- General heavy-load mechanical equipment with limited radial installation space
- 25+ years experience in RN series no-inner-ring cylindrical roller bearing manufacturing
- Exported to 50+ countries worldwide
- Rich OEM bulk order experience for 502312 brass cage heavy roller bearings
- Strict roller hardness, cage forming and load durability inspection before shipment
- Fast professional technical reply within 24 hours
- Stable bulk supply for long-term farm machinery and compressor factory cooperation
- GCr15 bearing steel raw material incoming hardness inspection
- Ultra-precision grinding for outer raceway and crowned cylindrical rollers
- Standard quenching & tempering heat treatment for uniform surface hardness
- Brass cage high-temperature endurance test, roller retention and full dimension recheck
- Anti-rust oil treatment before tube packaging delivery
- Fast factory quotation within 24h
- Professional agricultural compressor bearing technical parameter support
- Custom steel cage & C3/C4 clearance solution suggestions
- Competitive bulk wholesale factory price
- Q1: Does 502312 need separate inner ring?
No, it is designed without inner ring; quenched ground shaft can act directly as rolling raceway.
- Q2: What is the difference between brass cage and steel cage?
Brass cage adapts high-temperature heavy-load working conditions; stamped steel cage for general low-cost light load scenarios.
- Q3: What is your standard production lead time?
Standard stock 502312:7–15 working days
Custom clearance & cage specifiion orders take 12–18 days
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