FAGI 6312 2RS C3 P6 Deep Groove Ball Bearing
The FAGI 6312 2RS C3 P6 represents a pivotal heavy-duty deep groove ball bearing within the international ISO 63 "Heavy" Series, specified with metric dimensions: 60 mm bore diameter (d), 130 mm outside diameter (D), and a 31 mm overall width (B). Constructed with reinforced raceway wall thicknesses and substantially oversized rolling elements (balls), this bearing is engineered for demanding industrial duties where high basic dynamic radial loads and recurring axial shock impulses render lighter 6000 and 6200 series bearings vulnerable to premature fatigue.
10022110042
Request a quote
Product Detail
Technical Specifications & Engineering Overview: FAGI 6312 2RS C3 P6 Deep Groove Ball Bearing (60x130x31 mm) Heavy Series (63 Series) with Dual NBR Contact Seals, C3 Internal Radial Clearance, and P6 Precision Rating (ISO Class 6)
Manufactured from ultra-high-purity, through-hardened 100Cr6 bearing alloy steel with reinforced 63-series geometry. Engineered to withstand intense dynamic shock loads and severe rotational torques on 60 mm drive shafts across high-voltage electric motors, jaw crushers, large screw compressors, and heavy industrial gearboxes.
Engineering Overview & Structural Architecture: FAGI 6312 2RS C3 P6
The FAGI 6312 2RS C3 P6 represents a pivotal heavy-duty deep groove ball bearing within the international ISO 63 "Heavy" Series, specified with metric dimensions: 60 mm bore diameter (d), 130 mm outside diameter (D), and a 31 mm overall width (B). Constructed with reinforced raceway wall thicknesses and substantially oversized rolling elements (balls), this bearing is engineered for demanding industrial duties where high basic dynamic radial loads and recurring axial shock impulses render lighter 6000 and 6200 series bearings vulnerable to premature fatigue.
The engineering architecture of this designation relies on three foundational performance characteristics: P6 Precision Class (in compliance with ISO 492 / ABEC-3) for rigorous control of radial and axial runout while minimizing mechanical vibration under heavy loads; C3 Internal Radial Clearance to accommodate raceway expansion caused by heavy shaft press fits (Interference Fits) and continuous thermal gradients across 60 mm shafts; and dual 2RS contact seals formed from steel-reinforced Acrylonitrile Butadiene Rubber (NBR), maintaining pristine lubrication integrity while forming an impenetrable barrier against environmental abrasives, moisture, and fine dust.
Technical Designation Anatomy (FAGI 6312 2RS C3 P6)
Constructed with deep raceway grooves and thickened ring sections, delivering peak dynamic load capacity and superior impact resistance among single-row ball bearings.
Standard metric bore calculation ($12 \times 5 = 60\text{ mm}$); perfectly matched for drive shafts of high-capacity electric motors and primary mining drive systems.
Dual NBR rubber contact seals with internal steel stiffening plates, preventing grease purging and guarding against slurry, grit, and industrial fluids.
Enlarged internal radial clearance beyond normal (CN) to eliminate rolling element binding resulting from heavy press-fit interference and elevated operational operating temperatures.
Strict ISO Class 6 / ABEC-3 manufacturing tolerances that suppress rotational runout, attenuate acoustic noise, and boost overall mechanical efficiency.
Dimensional, Mechanical & Metallurgical Specifications
| Technical Parameter | Value / Specification | Functional Mechanical Impact |
|---|---|---|
| Bore Diameter (d) | 60 mm | Precise, stable seating on primary 60 mm heavy-duty industrial machinery drive shafts. |
| Outside Diameter (D) | 130 mm | Extensive outer raceway contact area engineered to distribute high radial reaction forces into cast-iron housings. |
| Overall Width (B) | 31 mm | Outstanding axial rigidity, providing high resistance against bending moments and dynamic thrust loads. |
| Precision Class | P6 (ISO Class 6 / ABEC-3) | Minimizes shaft rotational runout and damps high-frequency harmonic vibration under load. |
| Radial Internal Clearance | C3 (Greater than Normal) | Eliminates risk of ball pinching or thermal seizure caused by operational temperature differentials between rings. |
| Sealing System | 2RS (Dual Steel-Reinforced NBR Contact Seals) | Zero-maintenance barrier against water spray, abrasive particulate, and internal grease degradation. |
| Ring & Ball Metallurgy | 100Cr6 Chromium Bearing Steel (AISI 52100) | Through-hardened to 60–64 HRC with stable martensitic matrix for high resistance to rolling contact fatigue (RCF). |
| Cage Material | Pressed Steel (Ribbon Type) | High mechanical strength for uniform ball retention under rapid acceleration and severe cyclic shocks. |
Engineering Advantages & Operational Superiority of FAGI 6312 2RS C3 P6
1. Exceptional Load Capacity in 63 Heavy Series
The substantial 130 mm outside diameter accommodates reinforced rolling elements, dramatically boosting radial load capacity and shock resistance beyond standard 60 or 62 series configurations.
2. P6 Precision Tolerances for Vibration Suppression
Enhanced ISO Class 6 tolerances prevent dynamic runout on the 60 mm shaft, preserving power transmission efficiency and protecting adjoining mechanical seals and couplings.
3. Thermal Expansion Reliability via C3 Clearance
During continuous operation in heavy machinery where shafts operate at high temperatures, C3 clearance guarantees optimal operating geometry without binding or thermal overloading.
4. Zero-Maintenance 2RS Sealing Protection
Factory-metered premium lithium complex grease protected by dual steel-reinforced NBR lip seals guarantees complete environmental protection and eliminates routine relubrication downtime.
Primary Industrial Applications & Target Equipment
- High-Power Medium/High-Voltage Electric Motors (60 mm Shaft): Drive-end (DE) positions subject to severe radial tension from heavy belt drives and direct couplings.
- Jaw Crushers, Vibrating Screens & Industrial Ball Mills: Endures recurring severe shock forces and cyclic torsional vibrations in mining and aggregate processing.
- Large Process Pumps, Slurry Pumps & Turbo-Compressors: Ensures dynamic alignment and long-term durability under continuous hydraulic loads.
- Large Industrial Screw Compressors & Smelter Blowers: Delivers non-stop, 24/7 reliability in dusty steelworks and cement production plants.
- Heavy Helical and Planetary Reduction Gearboxes: Restrains severe combined radial and axial tooth reactions across heavy transmission lines.
Installation Directives & Workshop Warning (FAGI 6312 2RS)
The 6312 2RS bearing is factory-lubricated with a precise charge of high-temperature synthetic-enhanced grease. NEVER wash or submerge this bearing in gasoline, diesel, thinners, or degreasing solvents. Hydrocarbon solvents chemically attack the NBR elastomeric seals and wash away the grease soap structure, resulting in immediate catastrophic seizure upon startup under load.
- Correct Press-Fit Mounting Protocol: For cold mechanical press mounting onto a 60 mm shaft, pressing force must strictly be exerted on the face of the inner ring only using a dedicated mounting tool sleeve. Applying force to the outer ring will transmit destructive loads across the rolling elements, causing permanent raceway Brinelling indentations.
- Induction Heating Temperature Limit: If using an induction bearing heater for thermal mounting, the maximum heating temperature must never exceed 110°C (230°F). Excessive heating will destroy the NBR seal lip elasticity and thermally degrade the pre-packed grease. Direct heating with an open torch flame is strictly prohibited.
- Seal Protection: Exercise extreme caution during assembly to prevent screwdrivers, drift punches, or hammer corners from making physical contact with the flexible rubber seal lips.
- Shaft & Housing Tolerance Audit: Verify the 60 mm shaft journal dimensions and fit tolerance (e.g., ISO k5 or m5) prior to mounting to safeguard the bearing’s inherent P6 rotational accuracy.
FAGI Metallurgical Integrity & Quality Assurance
Because 6312 series bearings are deployed in vital primary drive assemblies and critical production lines, non-standard or counterfeit bearings made from ordinary carbon steel quickly experience cage deformation, raceway flaking, and catastrophic motor seizure.
FAGI 6312 2RS C3 P6 bearings undergo strict metallurgical certification and chemical purity testing using high-grade 100Cr6 alloy steel, precision ground to ISO Class 6 specifications to guarantee extended operating life and prevent costly unscheduled equipment shutdowns.
Price Inquiries, Technical Consultation & Bulk Orders
Contact our KGICO engineering sales department for technical certificates, official metallurgical test sheets, and commercial enterprise pricing.
Visit & Inquire at: kgico.co