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SKF
SKF 6312-Z Deep Groove Ball Bearing
Model: 6312-Z
4-hour response · Pricing in SAR · Delivery across all KSA regions
6312-Z — SKF 6312-Z Deep Groove Ball Bearing
The SKF 6312-Z is a single-row deep groove ball bearing with a single steel shield on one side, designed for medium-to-heavy radial load applications where higher operating temperatures or grease compatibility with an external lubrication system require one side to remain open to the housing cavity. With a bore of 60 mm, outer diameter of 130 mm, and width of 31 mm, the 6312 series is a workhorse bearing for larger electric motors, industrial fans, and medium-duty gearboxes operating across Saudi industrial sectors.
The single-shield (suffix -Z) configuration strikes a balance between contamination protection and operational flexibility. The steel shield on the shielded side reduces the entry of larger particles and deflects splashed oil or light grease, while the open side allows a pressurised external grease supply or oil-mist lubrication system to reach the bearing cavity — an arrangement commonly specified by ARAMCO and Saudi Aramco subsidiary engineering standards for large motor-driven pump applications where centralised lubrication systems are installed. In contrast to a fully sealed bearing, the 6312-Z can be relubricated in service, extending maintenance intervals and enabling condition-based lubrication strategies aligned with modern reliability-centred maintenance (RCM) programmes.
SKF produces the 6312-Z to its Explorer series manufacturing standards, meaning the bearing benefits from SKF's optimised internal geometry, surface finish, and steel cleanliness — characteristics that translate directly into extended calculated L10 life compared to catalogue-standard bearings from lesser manufacturers. The basic dynamic load rating of 81.9 kN positions the 6312-Z for continuous heavy-duty service in 55–75 kW electric motors, multi-stage centrifugal pumps, and industrial ventilation fans — the exact equipment categories specified in ARAMCO's pump and rotating equipment procurement standards for process service.
Razz Middle East maintains stock of the SKF 6312-Z for rapid delivery to all major Saudi industrial hubs. Our team supports ARAMCO maintenance contractors and plant maintenance departments with technical cross-reference, interchange confirmation, and full documentation packages including material certificates and conformity declarations as required by ARAMCO IK and inspection protocols.
Technical Specifications
Full specifications for the 6312-Z
- Bore Diameter
- 60 mm
- Outer Diameter
- 130 mm
- Width
- 31 mm
- Basic Dynamic Load Rating (C)
- 81.9 kN
- Basic Static Load Rating (C0)
- 52.0 kN
- Limiting Speed (grease)
- 4,300 rpm
- Shield Type
- Single steel shield one side (-Z)
- Tolerance Class
- ISO P6 (ABEC 3)
Key Features & Benefits
- Single steel shield on one side protects against larger contaminants while leaving the opposite side open for external relubrication — compatible with centralised lubrication systems commonly specified by ARAMCO and SABIC engineering standards.
- SKF Explorer manufacturing standards deliver a basic dynamic load rating of 81.9 kN with optimised internal geometry that extends L10 calculated life by up to 40% compared to catalogue-standard equivalents.
- 60 mm bore and 130 mm outer diameter position the 6312-Z as the standard choice for 55–75 kW electric motor shaft support across Saudi industrial applications.
- Steel shield construction tolerates higher operating temperatures than rubber-sealed variants, suitable for applications where bearing running temperature exceeds 80°C.
- Relubrication capability supports condition-based maintenance programmes aligned with reliability-centred maintenance (RCM) frameworks adopted at ARAMCO process facilities.
Industrial Applications in Saudi Arabia
- Large electric motor shaft support at ARAMCO upstream pump stations and compressor facilities in the Eastern Province, where the open-side configuration allows integration with centralised oil-mist lubrication systems.
- Industrial ventilation and process fan bearings at SABIC petrochemical plants in Jubail, where continuous 24/7 operation demands the high load rating and reliable lubrication access of the 6312-Z.
- Multi-stage centrifugal pump drive-end and non-drive-end positions in seawater desalination facilities operated by SWCC and MARAFIQ, where corrosion-resistant grease compatibility is maintained through external lubrication access.
- Heavy-duty conveyor drive motor bearings in Saudi cement plants and materials handling facilities, where high radial loads from belt tension require the 6312 series' elevated load rating.
- Industrial gearbox input shaft support in processing equipment across Riyadh and Dammam industrial estates, where gear-oil splash lubrication from the housing is channelled to the bearing through the open shield side.
Industrial Supplier in Saudi Arabia
Get a Quote for the SKF 6312-Z Deep Groove Ball Bearing
We respond within 4 business hours. Send model 6312-Z for competitive pricing in SAR with delivery across Saudi Arabia and the GCC.
Frequently Asked Questions — 6312-Z
Common questions from buyers in Saudi Arabia and the GCC
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