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62 Series
Home Deep Groove Ball Bearings 62 Series

6219 Open Deep Groove Ball Bearing | Heavy-Duty Unshielded Industrial Performance | 95×170×32 mm

6219 Open Deep Groove Ball Bearing | Heavy-Duty Unshielded Industrial Performance | 95×170×32 mm

The 6219 is a high-capacity, single-row open deep groove ball bearing engineered for rugged industrial environments where maximum radial load support and external lubrication flow are essential. Unlike shielded or sealed variants, this open-type bearing exposes the inner raceways and rolling elements, making it the perfect solution for machinery utilizing oil-bath or continuous circulating lubrication systems. Built to precise metric dimensions—a 95 mm bore, 170 mm outer diameter, and 32 mm width—the 6219 delivers uncompromising structural integrity and operational stability for large-scale equipment, heavy gearboxes, and industrial motors.

6219 Deep Groove Ball Bearing 95x170x32 mm | Open Configuration | High-Torque Precision Layout

Designed with an "unrestricted-flow, high-endurance" architecture, the open configuration eliminates the frictional drag entirely associated with contact seals or even non-contact shields. This allows the bearing to maximize energy efficiency and heat dissipation when submerged in or actively fed by an external oil system. It is the premier choice for manufacturing plants, agricultural assemblies, and commercial pumping stations where heavy load handling and continuous long-term operation are standard requirements.

6219 Open Deep Groove Ball Bearing | Heavy-Duty Unshielded Industrial Performance | 95×170×32 mm

Comprehensive Applications

Optimized for robust industrial machinery rather than micro-scale tech, the 6219 Open bearing is heavily relied upon across demanding manufacturing and heavy-duty sectors:

Heavy Machinery & Gearboxes
  • Industrial Transmissions
  • Mining Conveyor Rollers
  • Rotary Rock Crushers
Fluid & Air Systems
  • Large-capacity Commercial Water Pumps
  • Industrial-grade Air Compressors
Power Generation
  • Main Drive Shafts in Heavy-duty Electric Motors
  • Commercial Generators
  • Wind Turbine Assemblies

Key Performance Features

01. Unrestricted Lubrication Access

The completely open design lacks side shields or seals, allowing lubricating oil to freely circulate through the ball matrix and raceways. This ensures rapid heat dissipation and continuous flushing of microscopic wear particles in closed-bath systems.

02. Exceptional Load Bearing Capacity

Engineered from premium GCr15 Chrome Steel, the deep, uninterrupted raceway grooves closely match the ball diameter. This geometry enables the 6219 to support heavy radial loads as well as moderate thrust (axial) loads in either direction.

03. Thermal Stability & Durability

Through advanced metallurgical forging and precision polishing, the internal components maintain structural integrity even under high-torque stress. The lack of restrictive sealing components means there is zero friction added to the assembly, keeping operational temperatures lower in demanding, continuous-run applications.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 62 Series (Medium Duty)
Basic Designation 6219
Suffix None (Open Configuration)
Bore Diameter (d) 95 mm
Outer Diameter (D) 170 mm
Width (B) 32 mm
Material (Races & Balls) High-Carbon Chrome Steel (GCr15 / SAE 52100)
Precision Class ISO Class 6 (ABEC-3) / Class 5 (ABEC-5) Available
Cage Material Standard Pressed Steel Cage
Dynamic Load Rating (Cʳ) 109.0 kN
Static Load Rating (C₀ʳ) 71.5 kN
Limiting Speed (Grease) 4,300 r/min
Limiting Speed (Oil) 5,300 r/min
Weight (approx.) 2.62 kg

Interchange Part Numbers

The 6219 standard is universally recognized in the bearing industry and serves as a direct drop-in replacement for the following brand designations:

  • KOYO: 6219
  • SKF/FAG: 6219
  • NSK: 6219
  • NTN: 6219
  • Timken: 6219

Design & Configuration

The mechanical architecture of the 6219 prioritizes heavy load distribution and environmental integration over internal contamination protection. By utilizing an open layout, the bearing relies on the machinery's sealed housing to keep dust out, while exploiting the machine's internal oil bath for optimal running conditions. This synergy prevents the bearing from running dry or overheating during aggressive operational cycles.

It is the necessary standard for large-scale mechanical engineering where external oiling systems are present, ensuring massive rotational forces are supported with maximum efficiency and minimal maintenance downtime.

"A rugged, high-capacity industrial core designed to facilitate heavy-duty energy transfer while maximizing thermal management through unrestricted lubrication flow."

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