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.
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.

Engineered for heavy-duty industrial applications across multiple sectors where load capacity and reliable performance are critical:
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.
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.
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.
| 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 |
Common manufacturer equivalents include:
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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Details
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Details
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Details
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Details
The 6303-ZZ is a Double Metal Shielded Deep Groove Ball Bearing engineered for applications demanding reliable protection against dust and solid contaminants while maintaining high-speed capability. Equipped with two non-contact metal shields (ZZ) on both sides, this bearing effectively prevents ingress of larger particles and retains grease lubrication with minimal friction. With a 17 mm bore, it is a versatile choice for electric motors, pumps, compressors, and industrial equipment where compact dimensions, moderate load capacity, and long service life are required.
Details
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Details
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Details
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