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6313-2Z Shielded Deep Groove Ball Bearing For Heavy-Duty Industrial Applications | 65×140×33 mm

The 6313-2Z is a Double Metal Shielded Medium Series Deep Groove Ball Bearing engineered to deliver robust and reliable performance in demanding industrial environments. Fitted with two non-contact metal shields (2Z) on both sides, it provides effective protection against larger contaminant particles while maintaining minimal friction for higher speed operation. With a 65 mm bore and substantial cross-section, this bearing is ideally suited for electric motors, pumps, industrial gearboxes, and heavy machinery operating in clean to moderately contaminated conditions.

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6313-2Z Deep Groove Ball Bearing 65×140×33 mm | ISO 63 Series – Medium | Double Metal Shielded

This heavy-duty bearing incorporates a deep groove raceway design engineered to support smooth operation at speeds reaching 6,400 r/min (Oil) . It is designed to accommodate substantial radial loads and moderate bidirectional axial loads commonly encountered in industrial power transmission equipment. The 6313-2Z represents a durable and versatile bearing solution for applications where reliable operation under moderate to heavy loads is essential, with metal shields providing protection without compromising speed capability.

6313-2Z Shielded Deep Groove Ball Bearing For Heavy-Duty Industrial Applications | 65×140×33 mm

Comprehensive Applications

Engineered for heavy-duty industrial applications across multiple sectors where load capacity and reliable performance are critical:

Heavy Machinery & Processing Equipment
  • Machine tool spindles & ancillary equipment
  • Conveyor systems & bulk material handling
  • Paper mill machinery & processing equipment
  • Rubber & plastics processing machinery
Industrial Power Transmission
  • Industrial electric motors & generators (Frame sizes up to 280)
  • Centrifugal pumps & compressors
  • Industrial gearboxes & speed reducers
  • Fans, blowers & industrial ventilation systems
Automotive & Transportation
  • Truck water pumps & cooling fans
  • Automotive alternators & starter motors
  • Agricultural machinery drivelines
  • Construction equipment auxiliary systems
HVAC & Industrial Ventilation
  • Industrial exhaust systems & air handling units
  • Compressor units for refrigeration systems
  • Large commercial HVAC fan assemblies
  • Cooling tower fans & circulation pumps

Key Performance Features

01. Substantial Load Carrying Capacity

The 6313-2Z, with its 65×140×33 mm dimensions, delivers significant radial load capacity with dynamic load rating of 93 kN and static load rating of 60 kN . This robust construction ensures reliable performance in heavy-duty industrial applications where consistent operation under load is essential.

02. High-Speed Capability with Metal Shields

The double metal shield (2Z) configuration provides effective exclusion of larger contaminants while minimizing frictional torque. This design supports higher rotational speeds compared to contact seals, with grease lubrication permitting speeds up to 4,800-6,400 r/min depending on clearance specification.

03. Precision-Geared for Smooth, Reliable Operation

Manufactured from high-quality chrome steel with precision-ground raceways, the 6313-2Z delivers consistently smooth running characteristics with minimal vibration. Available with Normal (C0) or C3 internal clearance options to accommodate various operating conditions and thermal expansion requirements.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series – Medium
Basic Designation 6313
Suffix 2Z / ZZ (Double Metal Shields)
Bore Diameter (d) 65 mm
Outer Diameter (D) 140 mm
Width (B) 33 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class ABEC-1 (Standard), ABEC-3/5 Available
Cage Material Stamped Steel
Dynamic Load Rating (Cʳ) 93 kN 
Static Load Rating (C₀ʳ) 60 kN
Limiting Speed (Grease) 4,800 - 6,400 r/min
Limiting Speed (Oil) 5,600 - 6,400 r/min
Weight (approx.) 2.10 - 2.18 kg

Interchange Part Numbers

Common manufacturer equivalents include:

  • SKF: 6313-2Z / 6313-ZZ 
  • NSK: 6313ZZ
  • FAG: 6313-2Z
  • NTN: 6313ZZ
  • KOYO: 6313ZZ

Design & Configuration

The standard configuration for the 6313-2Z includes double metal shields and factory-applied lithium-based grease. This design offers dependable protection for applications in relatively clean industrial environments where moderate to high speeds are required. For applications requiring enhanced sealing against moisture or fine particulate, the rubber-sealed version (6313-2RS) is available. C3 internal clearance variants are recommended for applications involving higher operating temperatures or press-fit housings.

"Ideal for industrial electric motors, pumps, and heavy machinery, the 6313-2Z ensures dependable long-term operation under substantial loads. Its effective shield protection against larger contaminants combined with high-speed capability makes it a preferred choice for maintenance professionals and OEMs seeking reliable performance in demanding applications."

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Product Tags 6313‑2Z For Industrial Electric Motors And Pumps          6313‑2Z Double Shielded Bearing          Metal Shielded Ball Bearing For Heavy Machinery          C3 Clearance Deep Groove Ball Bearing 6313          65×140×33 mm Deep Groove Bearing Medium Series          65 mm Bore Metal Shielded Bearing For Gearboxes         

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