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64 Series
Home Deep Groove Ball Bearings 64 Series

6419-ZZ Heavy-Duty Deep Groove Ball Bearing for Industrial Machinery & Heavy Equipment | 95×240×55 mm

6419-ZZ Heavy-Duty Deep Groove Ball Bearing for Industrial Machinery & Heavy Equipment | 95×240×55 mm

Developed to endure extreme mechanical stress and high-impact industrial applications, the 6419-ZZ is a massive, heavy-duty deep groove ball bearing belonging to the robust 6400 series. Integrated with twin pressed-steel shields (ZZ), it forms an effective defense mechanism against airborne grit, slag, and workshop dust while safely encasing the specialized factory grease. Because these structural metal shields do not touch the inner ring, the 6419-ZZ experiences virtually zero added rotational resistance or frictional drag, positioning it as a top-tier choice for massive 95mm shaft systems found in industrial gearboxes, heavy-duty electric motors, and mining equipment.

6419-ZZ Deep Groove Ball Bearing 95x240x55 mm | Ultra-High Load Capacity | Steel Shielded

Compliant with strict ISO precision metrics, this 6400 heavy-series bearing utilizes a exceptionally thick cross-sectional profile paired with oversized steel balls. This massive construction allows the 6419-ZZ to absorb substantial radial forces and high bidirectional axial thrust loads that would instantly deform smaller series bearings. The dual-metal closure layout guarantees continuous, reliable shielding for the precision-ground internal raceways without causing the mechanical friction or heat accumulation typical of rubber-contact seals. This thermodynamic advantage ensures a cooler running temperature during prolonged cycles, extending the operating lifetime of heavy commercial machinery.

6419-ZZ Heavy-Duty Deep Groove Ball Bearing for Industrial Machinery & Heavy Equipment | 95×240×55 mm

Comprehensive Applications

Tailored specifically for critical infrastructure, heavy industries, and severe operating loads:

Heavy-Duty Electric Motors & Generators
  • Rotors and armatures in large-scale multi-megawatt industrial motors
  • High-output hydroelectric and wind power generator shafts
  • Auxiliary propulsion motors in marine and railway transit
  • Main drive shafts for heavy industrial ventilation blowers
Mining, Crushing & Construction Equipment
  • Vibratory screens and aggregate sorting machinery
  • Main shaft supports in industrial jaw crushers and ball mills
  • Drive systems for heavy earthmoving and tunneling equipment
  • Industrial conveyor system pulley assemblies
Pumps, Compressors & Fluid Transmissions
  • High-pressure centrifugal pumps and oilfield mud pumps
  • Multi-stage industrial air compressors and turbofans
  • Heavy-duty planetary and helical reduction gearboxes
  • Steel mill rolling machinery and paper mill calendars
Material Handling & Crane Systems
  • Heavy-duty hoist mechanisms and crane cable drums
  • Port terminal container handling cranes
  • Automated high-capacity bucket elevators
  • Industrial turntable and indexing base bearings

Key Performance Features

01. Non-Contact Metal Enclosures for Lower Thermal Build-Up

Featuring a double-shielded (ZZ) design, this heavy bearing deflects destructive particulate debris without generating additional friction. This minimizes torque drag, aids in rapid heat dissipation, and prevents early thermal grease breakdown, maintaining internal integrity across high-stress operating hours.

02. Vacuum-Degassed Forged GCr15 Steel

Crafted entirely from premium, ultra-clean GCr15 chrome steel, every structural component undergoes stringent hardening phases. The resulting crystalline structure ensures optimum Rockwell hardness, exceptional structural fatigue life, and remarkably smooth operation for a bearing of this scale.

03. Extra-Heavy Series Internal Geometry

With an expansive 240mm outer diameter and a wide 55mm profile, the 6419-ZZ boasts significantly deeper raceway grooves and larger rolling balls. This specific geometry drastically elevates its static and dynamic load handling coefficients, preventing deformation under sudden shock loads.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 6400 Series (Heavy Duty / Large Bore)
Basic Designation 6419
Suffix ZZ (Double Steel Shields)
Bore Diameter (d) 95 mm
Outer Diameter (D) 240 mm
Width (B) 55 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class Standard / P5 Grade Available
Shield Material Cold-Rolled Pressed Steel
Dynamic Load Rating (Cʳ) 186.00 kN
Static Load Rating (C₀ʳ) 153.00 kN
Limiting Speed (Grease) 3,400 r/min
Limiting Speed (Oil) 4,000 r/min
Weight (approx.) 13.50 kg

Interchange Part Numbers

Directly crosses over to these major industry designations:

  • SKF: 6419-2Z
  • NSK: 6419ZZ
  • FAG: 6419-2Z
  • KOYO: 6419ZZ
  • TIMKEN: 6419ZZ
  • NTN: 6419ZZ

Design & Configuration

The standard-production 6419-ZZ leaves our facility packed with top-tier, heat-stable grease rated for rugged industrial duty. Because this bearing features non-contact steel closures, it maximizes rotational speeds in environments where oil mist or standard grease lubrication is required. For machinery experiencing high-temperature gradients or rapid heat expansion, we supply these units with a C3 or C4 looser internal clearance. If your operational zones face high levels of ambient humidity or caustic elements, stainless steel composition variants or rubber-sealed 6419-2RS options are available upon order.

"Blending an extra-heavy 6400-series chassis with efficient, low-drag steel shielding, the 6419-ZZ supplies unyielding load support and high-precision dependability to heavy industrial drivetrains."

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Details

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