Product Specifications
| Parameter |
Details |
| Model NO. |
30308 |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0 P6 P5 P4 P2 |
| Vibration |
Z1V1 Z2V2 Z3V3 |
| Service |
OEM ODM |
| Transport Package |
Carton Pallet |
| Specification |
40*90*23 mm |
| Origin |
China |
| HS Code |
8482200000 |
Application Industries
| Industry |
Typical Equipment |
| Automotive |
Transmission systems, drive axles, differential gears |
| Industrial Machinery |
Gearboxes, reducers, printing machines |
| Agricultural Machinery |
Tractor gearboxes, harvester drivetrains |
| Engineering Equipment |
Excavator transmission components, heavy-duty conveyors |
Prevent Transmission Failures with Precision Tapered Roller Bearings 30308, 30309, 30310
Transmission systems rely on bearings that handle both radial and axial loads without compromise. A single bearing failure can halt production lines, delay deliveries, and create unexpected costs. Many buyers struggle with inconsistent quality from generic suppliers, where high vibration levels or imprecise tolerances lead to premature wear. When downtime eats into profits, having a reliable bearing partner becomes critical.
Engineered for Transmission Systems: Tapered Roller Bearings You Can Depend On
Our Tapered Roller Bearing 30308, 30309, and 30310 series are designed to meet the rigorous demands of transmission applications. With precision grades from P0 to P4 and vibration control up to Z3V3, these bearings minimize noise and ensure stable performance under heavy loads. Backed by over 18 years of manufacturing experience, we offer one-stop service from R&D to production, ensuring that every bearing meets ISO 9001:2015 standards. Whether for automotive gearboxes or industrial reducers, these bearings deliver the reliability your equipment needs.
Optimal Performance in High-Load Transmission Environments
Tapered roller bearings excel in applications where combined radial and axial loads are present—exactly the conditions found in transmission systems. The 30308, 30309, and 30310 models handle dynamic forces efficiently, with their conical design distributing loads evenly across rolling elements. This design reduces friction and heat buildup, even at high rotational speeds, making them ideal for continuous operation in automotive, agricultural, and industrial machinery. Choosing the right tapered roller bearing directly impacts your equipment’s service life and maintenance frequency.
Key Technical Features That Ensure Reliable Transmission Operation
Precision rating is critical for transmission bearings: P4 grade minimizes radial runout, ensuring smooth power transfer and reducing gear wear. Vibration control (Z1V1 to Z3V3) is equally important—higher Z grades like Z3V3 reduce operational noise and extend bearing life by limiting vibration-induced stress. The 40x90x23mm dimension of the 30308 model provides a balance of compact size and load capacity, fitting standard transmission housings while supporting heavy torque. Our use of high-grade chrome steel enhances durability, ensuring these bearings withstand the harsh conditions of industrial and automotive transmissions.
Why Cutting Corners on Bearings Costs More in the Long Run
Low-quality tapered roller bearings may save money upfront, but they often fail prematurely. A failed bearing in a transmission can damage gears, shafts, and housing, leading to repair costs far exceeding the initial savings. Our bearings, certified to ISO, ABMA, and DIN standards, undergo strict quality control—from raw material inspection to finished product testing. With a 12-month warranty, we stand behind every bearing, ensuring that you avoid the hidden costs of downtime, repairs, and replacement. Investing in reliable bearings reduces total cost of ownership by extending maintenance intervals and preventing unexpected failures.
Your Trusted Partner for Transmission Bearings Since 2005
Jinan Saifan Bearing Co., Ltd has served global clients across Europe, North America, and Southeast Asia for over 18 years. Our factory features automated production lines and in-house laboratories for dimensional, noise, and service life testing. We support OEM/ODM customization, adjusting designs to match your exact specifications. With a 1-piece MOQ for standard bearings and sample orders shipped in 3-5 working days, we meet both small-batch and large-scale needs. Our professional technical team provides free guidance on selection, installation, and maintenance, ensuring you get the right bearing for your application. Certified as a high-tech enterprise, we combine manufacturing expertise with responsive service to keep your operations running smoothly.
Packaging & Shipping
- Standard packaging: Carton with pallet reinforcement for secure transport
- Sample orders: 3-5 working days delivery
- Bulk orders: 5-15 working days production time
- Multiple logistics options: DHL, FedEx, UPS, air freight, and sea freight available
- Flexible MOQ: 1 piece for standard bearings, customized order quantities negotiable
Get Your Transmission Bearings Shipped Fast
Don’t let equipment downtime affect your productivity. Whether you need a single 30308 bearing for emergency repair or bulk orders for production, we have the inventory and expertise to meet your needs. Send us your bearing型号, application details, and quantity, and our team will provide a quote within 24 hours. The sooner you order, the sooner you can get back to smooth, reliable operation.
Frequently Asked Questions
Q: Are these bearings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under strict ISO 9001:2015 quality control. Each product can be traced through our production records, ensuring authenticity and compliance with international standards.
Q: How do I confirm if the 30308 bearing fits my transmission?
A: Provide your equipment model, transmission type, or specific load/speed requirements. Our technical team will verify compatibility and recommend the optimal precision and vibration grade for your application.
Q: What is the warranty policy for these tapered roller bearings?
A: We offer a 12-month warranty from the date of delivery. Defective products due to manufacturing issues will be replaced free of charge or refunded, per customer preference.
Q: What is the minimum order quantity for the 30309 bearing?
A: Standard bearings like the 30309 have a 1-piece MOQ, making them suitable for both emergency repairs and small-batch purchases.
Q: How quickly can I receive my order?
A: Sample orders ship within 3-5 working days, while bulk orders take 5-15 working days depending on quantity. We work with global logistics providers to ensure timely delivery.
Q: Can you provide ODM customization for non-standard transmission bearings?
A: Yes, we support ODM customization. Our R&D team can adjust dimensions, materials, and designs based on your drawings and performance requirements.
Ready to order or need a quote?
Tags:
30308 Bearing
30309 Bearing
30310 Bearing
40x90x23mm Tapered Bearing
P4 Precision Tapered Bearing
Tapered Roller Bearing
Transmission Tapered Bearing
Z3V3 Vibration Control Bearing
