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63 Series
Home Deep Groove Ball Bearings 63 Series

6319 Open Type Deep Groove Ball Bearing | Industrial Heavy-Duty Metric Bearing | 95×200×45 mm

6319 Open Type Deep Groove Ball Bearing | Industrial Heavy-Duty Metric Bearing | 95×200×45 mm

The 6319 is a robust, large-bore deep groove ball bearing engineered for demanding industrial environments where high load-carrying capacity and long-term structural stability are paramount. Designed as an open-type configuration, it allows for seamless integration into oil-circulated or grease-replenished systems, ensuring optimal thermal regulation during continuous operation. With a 95mm bore and a 200mm outer diameter, this bearing is a cornerstone component for high-power electric motors, industrial pumps, and heavy-duty mechanical transmissions.

6319 Deep Groove Ball Bearing 95x200x45 mm | Heavy-Series Metric Bearing | Unshielded Open Design

Built to sustain significant radial and bidirectional axial loads, the 6319 utilizes an optimized internal geometry with high-grade GCr15 chrome steel construction. The deep-groove raceways are precision-honed to minimize friction and vibration, even under intense mechanical stress. Because it features an open architecture, maintenance personnel can easily monitor the internal condition and ensure consistent lubrication, which is vital for the longevity of large-scale rotating hardware in mining, energy, and manufacturing sectors.

6319 Open Type Deep Groove Ball Bearing | Industrial Heavy-Duty Metric Bearing | 95×200×45 mm

Comprehensive Applications

The 6319 provides the heavy-duty reliability required for massive rotational systems:

Large Electric Motors & Power Generation
  • High-voltage industrial motors
  • Hydroelectric and wind turbine generators
  • Main drive shafts for power plants
Construction & Mining Machinery
  • Vibration screens and crushing equipment
  • Heavy-duty conveyor drive pulleys
  • Excavator and crane rotational assemblies
Heavy-Duty Pumps & Compressors
  • Large-scale centrifugal pumps
  • Industrial air compressor units
  • Fluid handling systems in petroleum refineries
Agricultural & Processing Equipment
  • High-capacity grain processing mills
  • Industrial-scale mixers and blenders
  • Heavy-duty tractor transmission systems

Key Performance Features

01. Formidable Load-Bearing Architecture

The defining strength of the 6319 is its ability to handle massive radial forces. The heavy-series design provides thicker rings and larger steel balls compared to the 60 or 62 series, making it the preferred choice for machinery subjected to shock loads and high-torque operations.

02. Unrestricted Thermal Management

The open-type design facilitates superior heat dissipation. In high-speed industrial applications, the lack of seals allows lubricant to flow freely, maintaining thermal equilibrium and preventing the bearing from overheating during peak duty cycles.

03. Precision Industrial Tolerances

Manufactured to P0 (standard) or P6 (enhanced) precision grades, the 6319 ensures high rotational accuracy. The high-purity GCr15 steel minimizes internal impurities, significantly reducing the risk of fatigue-related failure and ensuring a stable service life in rigorous 24/7 operating environments.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series (Heavy-Duty)
Basic Designation 6319
Suffix N/A (Open Type)
Bore Diameter (d) 95 mm
Outer Diameter (D) 200 mm
Width (B) 45 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Cage Material Pressed Steel (Standard) / Machined Brass available
Dynamic Load Rating (Cʳ) ~159 kN
Static Load Rating (C₀ʳ) ~118 kN
Limiting Speed (Grease) ~4,300 r/min
Limiting Speed (Oil) --
Weight (approx.) 5.67 kg

Interchange Part Numbers

Compatible with international heavy-duty bearing standards:

  • SKF: 6319
  • NSK: 6319
  • FAG6319
  • NTN: 6319
  • KOYO: 6319
  • NMB: 6319

Design & Configuration

The 6319 Open Bearing is treated with a specialized anti-rust coating and is ready for site-specific lubrication. It is intended for use in enclosed housings where oil or grease is provided by the system. For applications requiring internal contamination protection, shielded (ZZ) or sealed (2RS) variants can be supplied. For extremely high-load or high-vibration scenarios, we offer C3 or C4 internal clearance options to accommodate thermal expansion.

"Delivering uncompromising strength for large-scale engineering, the 6319 is the definitive solution for high-load, high-reliability industrial rotation."

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