High Capacity 30312 Tapered Roller Bearing for Mining Equipment
| Item No : | 30312 (7312E / ISO 303 Heavy Series) |
| Size (d*D*B) : | 60x130x33.5mm |
| Material : | |
| Lead Time : | 3-5 days |
| Weight : | 2.02KG |
| MOQ : | 10 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
The 30312 (60x130x33.5mm) is a large-scale ISO metric single-row tapered roller bearing from the heavy-duty 303 series. Engineered for extreme operating environments, this robust bearing is specifically designed to manage massive radial loads and high unidirectional axial thrust simultaneously. As an experienced B2B bearing distributor, we supply high-reliability 30312 units under our proprietary RMO brand for heavy machinery manufacturing, mining equipment, and aftermarket replacements. Additionally, our global procurement channel is fully equipped to source Tier-1 international bearing brands to meet your specific project requirements.
⚙️Product Features:
- Massive Load Capacity (303 Series): Features an extra-thick cross-section (130mm OD) and enlarged rolling elements, making it highly resistant to metal fatigue in heavy engineering and metallurgical applications.
- Friction-Optimized Large Rollers: Precision-ground tapered rollers and raceways ensure optimal load distribution, minimizing heat generation even under heavy shock loads and continuous operation.
- Interchangeable Separable Design: The standard ISO cup (outer ring) and cone (inner ring with roller cage) can be installed separately, facilitating easier mounting and precise clearance adjustments on large shafts.
- Scalable B2B Procurement: Empower your wholesale operations with our bulk-ready RMO brand inventory, or utilize our global network for competitive sourcing of alternative premium brands.
⚙️Product Application:
Designed to provide unyielding stability in large mechanical systems, the 30312 heavy tapered bearing is widely deployed in:
- Heavy-duty commercial truck axles, trailer wheel hubs, and massive differential gearboxes.
- Mining crushers, vibrating screens, slurry pumps, and material handling conveyors.
- Metallurgical rolling mill equipment and heavy industrial speed reducers.
- Large-scale agricultural tractors, forestry machinery, and railway axle box assemblies.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
About Rimao
Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!
⚙️Technical Parameters:
| Model / Industry No. | 30312 (7312E / ISO 303 Heavy Series) |
| Bearing Type | |
| Metric Dimensions | 60x130x33.5mm (Inner d x Outer D x Total Width/Height H) |
| Ring Widths | Inner Cone Width: 31 mm / Outer Cup Width: 26 mm |
| Structure | Separable Cup and Cone Assembly |
| Material | |
| Precision Rating | Normal / P6 / P5 Precision Grade |
| Target Application | Mining Crushers, Heavy Trucks & Reducers |
| Brand | RMO/Neutral/OEM/Other Brands |
| Package | Individual plastic bag, plastic tube or original RMO brand box |
| Lead Time | 3-5 days for stock; 7-15 days for bulk orders |
| Shipping | Express (DHL/FedEx/UPS), Air Freight, Sea Freight |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |
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