Product Specifications
| Parameter |
Details |
| Model NO. |
31311, 33213, 33013, 33116, 32912 |
| Outer Dimension |
35mm-400mm |
| Material |
Bearing Steel |
| Design Type |
Non-Aligning Bearings, Separated |
| Load Direction |
Radial Bearing |
| Product Name |
Taper Roller Bearing |
| Bore Size |
15-240 mm |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Vibration Grade |
Z1V1, Z2V2, Z3V3 |
| Service |
OEM, ODM |
| Transport Package |
Carton Pallet |
| Specification (31311) |
60*130*48.5 mm |
| Origin |
China |
| HS Code |
8482200000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Presses, Reducers |
| Automotive |
Wheel Hubs, Gearboxes, Axle Systems |
| Agricultural Machinery |
Harvesters, Tractors, Heavy-Duty Transmissions |
| Construction |
Excavators, Loaders, Conveyors |
| Manufacturing |
CNC Machines, Spindles, Industrial Fans |
Eliminate Downtime with High Precision 31311 & 33213 Tapered Roller Bearings
Industrial machinery operators know the cost of unexpected downtime—hours lost to bearing failure, missed deadlines, and costly repairs. Many face the frustration of matching complex bearing specifications or waiting weeks for bulk orders. When precision matters most, settling for low-quality alternatives risks equipment damage and production delays.
Engineered for Reliable Performance in Critical Machinery
Our Tapered Roller Bearings, including models 31311 and 33213, deliver the precision and durability industrial machinery demands. With P0-P4 precision ratings and Z2-Z4 noise control, these bearings minimize vibration and extend equipment life in high-stress applications. Backed by our ISO9001-certified production process and dedicated QC lab, each unit undergoes rigorous testing to ensure consistent performance.
Optimal Performance in Heavy-Load Industrial Environments
Designed for radial and axial load handling, these bearings excel in machinery subject to heavy loads and continuous operation. The separated inner and outer rings allow for easy mounting and maintenance, while bearing steel construction ensures resistance to wear and deformation under pressure. Whether in machine tool spindles, printing presses, or reducers, these bearings maintain stability even at high speeds, reducing the risk of unplanned shutdowns.
Key Technical Features That Maximize Machinery Uptime
Precision rating directly impacts machinery accuracy—our P4-grade bearings, for example, ensure minimal radial runout, critical for CNC machine tools requiring tight tolerances. Vibration grades Z2V2 and Z3V3 reduce noise and energy loss, making them ideal for precision equipment. The 60*130*48.5 mm specification of the 31311 model balances load capacity with compact design, fitting seamlessly into standard industrial gearboxes. Separated construction simplifies installation, cutting maintenance time and labor costs.
Why Genuine Bearings Lower Your Total Cost of Ownership
Counterfeit bearings may offer lower upfront prices, but they often fail prematurely, leading to costly repairs and production losses. Our Tapered Roller Bearings, manufactured to international standards, provide predictable performance and a 12-month global warranty. With free technical guidance and defect replacement, we help you avoid the hidden costs of poor-quality components—ensuring your machinery runs longer and more efficiently.
Trusted by Global Buyers for Over 18 Years
Since 2005, Jinan Saifan Bearing has supplied industrial clients across Europe, America, and Southeast Asia with reliable bearing solutions. Our integrated manufacturing and exporting capabilities mean we control quality from raw material to delivery. We offer flexible orders—1pc MOQ for standard items, 3–5 day sample lead times, and 5–15 day bulk delivery—to meet both emergency repairs and planned production needs. Our ISO14001 certification underscores our commitment to sustainable, reliable manufacturing.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- 3–5 day lead time for samples, 5–15 days for bulk orders
- Global shipping via DHL, FedEx, UPS, air, or sea freight
- Real-time tracking provided for all shipments
- 1pc minimum order quantity for standard models
Get Your Bearings Delivered Fast—No Minimum Order Required
Don’t let bearing issues slow your production. Whether you need a single 31311 for emergency repair or bulk 33213 bearings for scheduled maintenance, we have you covered. Send us your model number, application details, and quantity, and our team will provide a quote within 24 hours.
Frequently Asked Questions
Q: Are these bearings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under ISO9001 standards, with full traceability from raw material to delivery.
Q: How do I confirm if the 31311 or 33213 is compatible with my machinery?
A: Provide your equipment model or technical specifications, and our engineering team will verify compatibility at no cost.
Q: What warranty do you offer on these tapered roller bearings?
A: We provide a 12-month global warranty covering manufacturing defects, with free replacement or refund for non-conforming products.
Q: What is the minimum order quantity for standard models?
A: We accept 1pc MOQ for standard bearings like the 31311 and 33213, ideal for emergency repairs or small-batch needs.
Q: How quickly can you ship after order confirmation?
A: Standard items ship within 5–15 days; samples are available in 3–5 days. We also offer expedited shipping options.
Q: Do you offer OEM/ODM services for custom bearing requirements?
A: Yes, we provide full OEM/ODM customization, including custom dimensions, precision grades, and branding, supported by our R&D team.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
