Wholesale Tapered Roller Bearing

Wholesale Tapered Roller Bearing Manufacturer and Supplier

Shanghai Yinin Bearing & Transmission Company is a wholesale tapered roller bearing manufacturer and supplier based in China. Since 1999, we have grown from a domestic bearing export agent into an integrated group with our own manufacturing facility, Jiangsu Dahua Bearing Manufacturing Co., Ltd. Today, we supply a full range of tapered roller bearings in metric and inch series, engineered for combined radial and axial loads in demanding industrial and automotive applications.

Our tapered roller bearing line covers 30200, 30300, 32200, 32300, 31300, 32000, 33000, 33100, 33200 series, plus flanged outer ring and inch-size variants. Each series is available in open or sealed configurations, with cages selected for your speed and load profile. We support OEM and aftermarket projects with application engineering, quality control, and packaging that protects bearings through global logistics.

Tapered Roller Bearing Range and Application Fit

Tapered roller bearings are separable bearings designed to handle combined radial and axial loads. The contact angle and roller geometry determine load capacity and speed capability. Our range is organized by series, each with a distinct load-angle profile.

For applications requiring paired mounting, we supply matched sets with controlled preload to optimize system stiffness and accuracy. Our engineering team can help you select the correct series and tolerance class based on your shaft and housing fits.

Engineering and Configuration Approach

We configure each tapered roller bearing according to your operating conditions: load magnitude and direction, speed, temperature, lubrication method, and mounting arrangement. Our proposal includes the bearing series, size, tolerance (P0, P6, P5), cage type (steel, brass, polyamide), and sealing solution.

• Materials: High-carbon chromium bearing steel (GCr15, GCr15SiMn) for standard applications; stainless steel for corrosive environments.
• Heat treatment: Controlled carburizing or through-hardening to achieve core toughness and surface hardness for shock loads.
• Precision: Dimensional accuracy and running accuracy per ISO 492, with options for higher classes when required.
• Seals and shields: Contact or non-contact seals, metal shields, or open design for oil lubrication.

We also produce non-standard tapered roller bearings for specialized equipment. If your application requires a modified bore, special width, or custom cage, we can evaluate feasibility and provide a tailored solution.

Quality Assurance and Testing

Quality is built into every stage, from raw material inspection to final assembly. Our manufacturing facility in Jiangsu is equipped with precision CNC lathes, grinders, and heat treatment lines. We maintain a separate QC center that performs dimensional, material, and performance testing.

• Material analysis: Chemical composition and hardness verification on incoming steel.
• Dimensional inspection: CMM and dedicated gauges for bore, OD, width, and taper angle.
• Dynamic balance: High-speed balancing to minimize vibration.
• Load and life testing: Simulated operating conditions to validate durability.

We follow ISO9001 quality management principles and can provide inspection reports with each shipment. For critical applications, we offer additional testing such as magnetic particle inspection or noise testing.

Integration, Installation, and Maintenance Support

Proper mounting is essential for tapered roller bearing performance. We provide installation guidance, including recommended fits, preload adjustment, and lubrication. Our technical team can assist with troubleshooting if issues arise during commissioning or operation.

We also supply matched bearing sets with shims or spacers to achieve the correct endplay or preload. For high-volume OEM programs, we offer just-in-time delivery and vendor-managed inventory to reduce your carrying costs.

Information We Use to Configure Your Solution

To prepare an accurate quotation and technical proposal, we need the following details:

If you have an existing bearing sample or drawing, send it to us for cross-reference. Our team will verify interchangeability and provide a sample for approval before mass production.

Packaging and Delivery

Bearings are individually wrapped in anti-rust paper, packed in boxes, and then in export cartons or wooden crates. We offer standard industrial packaging or custom branding for distributors. In-stock items ship within 3 working days; custom production lead times depend on quantity and specification.

We export to the United States, Europe, Asia, and other regions. Our logistics team coordinates sea, air, or express delivery to meet your project schedule.

Frequently Asked Questions

What is the difference between metric and inch tapered roller bearings?

Metric series (e.g., 30200, 30300) follow ISO dimensions in millimeters, while inch series are based on inch dimensions and are common in North American equipment. We supply both, and our team can help you identify the correct equivalent for your application.

Can you provide bearings with special tolerances or custom dimensions?

Yes, we can manufacture non-standard tapered roller bearings with modified bore, outer diameter, width, or special materials. Send us your drawing or detailed specification for a feasibility review.

How do you ensure the quality of mass-produced bearings?

We perform 100% inspection on critical dimensions and conduct statistical process control during production. Each batch is tested for hardness, noise, and vibration before shipment. We can provide inspection certificates upon request.

What is the minimum order quantity for tapered roller bearings?

Our standard MOQ is 100 sets for stock sizes, but we can accommodate smaller trial orders for sample testing. For custom bearings, MOQ depends on the complexity and production setup.

Do you offer technical support for bearing selection and installation?

Yes, our engineering team provides application guidance, including load calculations, fit recommendations, and installation procedures. We also offer after-sales support to resolve any operational issues.