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Features

Specifications

Type: Single Direction Bearing

Bearing Material: Bearing Steel GCr15

Bore Diameter: 90 Mm

Outer Diameter: 155 Mm

Thickness: 55 Mm

Model: Customizable

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51318 Single Direction Bearing

51318 Bearing

Precision Industrial Machinery Bearings

Basic Infomation

Place of Origin: CHINA

Brand Name: Kesle

Payment & Shipping Terms

Delivery Time: 5-8 work days

Payment Terms: T/T,Western Union,MoneyGram,PayPal

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51318 Single Direction Bearing , Precision Industrial Machinery Bearings

Product Description

51318 Single Direction Thrust Ball Bearing

Basic Parameters

Bore diameter (d): 90mm
Outer diameter (D): 155mm
Thickness (T): 50mm (single bearing)
Type: Single-direction thrust ball bearing (51000 series)
Weight: Approximately 3.67-3.88kg (3.67kg for SKF models, 3.88kg for NACHI)
Structure: Single-row, non-separable design with flat housing washer, shaft washer, and steel balls

Core Performance Specifications

Load Capacity

Dynamic load rating (Cr): 182-213kN (significant brand variation)
Static load rating (C0r): 440-525kN (highest for NACHI models)
Material: GCr15/SUJ2 high-carbon chromium bearing steel (surface hardness HRC58-62)

Speed & Precision

Limiting speed:
- Grease-lubricated: 1,100-1,500rpm
- Oil-lubricated: 1,600-2,200rpm
Precision class: Standard P0; customizable to P4

Technical Features

Axial load-oriented: Only withstands unidirectional axial force
Low-friction design: Optimized raceway curvature and cage structure

Structural & Environmental Adaptability

Mounting fit:
- Shaft: h8 (recommended tolerance)
- Housing bore: H8
Temperature range:
- Standard: -20°C to 120°C
- High-temperature type: Up to 200°C
Sealing options: Open, 2RS (double rubber seals), or ZZ (double metal shields)

Typical Applications

Industrial Machinery: Heavy-duty presses, forging equipment, gearboxes, machine tool spindles
Transportation: Railway freight car axle boxes, large construction machinery
Precision Equipment: Medical imaging devices, food packaging machinery

Maintenance & Lubrication Guidelines

Lubrication Options

Grease lubrication: Lithium-based grease (NLGI Grade 2)
Oil lubrication: ISO VG 46-68 mineral oil

Lubrication Interval

Normal conditions: Every 8,000-12,000 hours
High-temperature/high-pollution: Shorten to 4,000 hours

Certifications & Compatibility

Standards compliance: ISO 9001:2015 quality management system
Cross-brand replacement: Interchangeable with NSK 51318, NACHI 51318, HRB 51318

Customization Options

Material upgrades: Ceramic hybrid bearings, stainless steel (SUS440C)
Special designs: Phosphating coating, laser marking for IIoT tracking

Selection Considerations

Load direction: Single-direction design requires paired mounting for bidirectional forces
Fit precision: Cylindricity error should be controlled within 0.01mm
Temperature compensation: Reserve 0.03-0.05mm axial expansion clearance

Summary

The 51318 thrust ball bearing features high axial load capacity (up to 525kN static) and cost-effectiveness as core advantages, making it widely used in industrial machinery, transportation, and precision equipment. Its standardized design and customizable features balance performance and cost. With scientific lubrication and maintenance, it delivers reliable long-term operation in environments ranging from -20°C to 200°C.

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Contact Person :	orlenda li
Tel :	+8613713334285

51318 Single Direction Bearing , Precision Industrial Machinery Bearings

51318 Single Direction Bearing

51318 Bearing

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