About Changzhou Zhihua Bearing Co., Ltd. - Bearing Supplier in China

Changzhou Zhihua Bearing Co., Ltd. is located in Changzhou, China and currently lists five active products. The company focuses on the bearing category and provides components that are commonly used in industrial machinery, automotive assemblies, and equipment requiring precision rotational support. Its catalogue includes axial needle bearings, inner rings, stud type track rollers, bearing washers, and cylindrical roller bearings. The product set covers both standard and specialty designs that meet typical bearing performance requirements. The listings show the supplier’s capability to source steel‑based and stainless‑steel bearing parts for a range of applications.

Among the five items, the bearing washer is classified under HS code 8484.90 and is manufactured from high‑quality spring steel grades SK5 or SK7. The cylindrical roller bearing carries HS code 8482.50 and is offered in chrome steel GCr15 as well as stainless steel variants 440C/SS440. The remaining three products - axial needle bearing, inner ring and stud type track roller - are listed without specific HS codes in the catalogue but fall within the broader bearing HS chapters 8482 and 8484. These listings indicate the supplier’s ability to supply both steel‑based and stainless‑steel bearing components.

Product Range and Specialties of Changzhou Zhihua Bearing Co., Ltd.

The catalogue comprises axial needle bearings, inner rings, stud type track rollers, bearing washers (HS 8484.90) and cylindrical roller bearings (HS 8482.50). Axial needle bearings typically serve bore sizes from 5 mm to 50 mm with dynamic load ratings up to 10 kN and are designed for high‑speed, low‑friction applications. Inner rings are standard bearing components that provide the raceway for rolling elements and are usually supplied in metric diameters matching ISO 15 tolerances. Stud type track rollers are used in conveyor and material‑handling systems, often featuring hardened steel shafts and a load capacity of 1‑5 kN per roller.

Industry practice for bearing washers made from SK5/SK7 spring steel includes a hardness range of 58‑62 HRC and a typical thickness of 0.5‑3 mm, suitable for vibration damping and preload adjustment. Cylindrical roller bearings in GCr15 or 440C/SS440 are commonly offered with bore diameters from 10 mm to 500 mm, C3 internal clearance, and a dynamic load rating (C) up to 200 kN for larger sizes. Standard specifications such as ISO 281 for load rating and ISO 492 for dimensional tolerance are routinely applied to these product families.

Trade and Export Information - Changzhou Zhihua Bearing Co., Ltd.

China is one of the world’s largest exporters of rolling‑bearing components, with the European Union, the United States and Southeast Asian manufacturing hubs ranking among the top import regions. HS chapter 8482 (ball, roller and needle bearings) and 8484 (parts of bearings) are the primary tariff classifications used for customs clearance of the listed products, and they often attract anti‑dumping duties in certain jurisdictions.

Buyers typically request certifications such as ISO 9001 quality‑management, ISO 14001 environmental compliance and, for automotive‑related bearings, the IATF 16949 or A2LT certification. Common regulatory requirements include CE marking for EU markets and compliance with ASTM A295 for spring steel. Sea freight under FOB or CIF terms is the standard logistics model, with bearings packed in moisture‑resistant wooden crates or corrugated boxes, sometimes with a zinc‑rich anti‑corrosion coating to protect against humidity during transit.

Sourcing from Changzhou Zhihua Bearing Co., Ltd. - Buyer Guidance

When sourcing from Changzhou Zhihua Bearing, request a material test certificate that confirms the grade (SK5/SK7 for washers, GCr15 or 440C/SS440 for rollers) and hardness values. Obtain dimensional drawings and ISO 281 load‑rating data to verify that the bearing will meet the intended application’s speed and load requirements. It is advisable to ask for a copy of the supplier’s ISO 9001 certificate and any relevant export inspection reports before finalising the order.

Typical minimum order quantities for Chinese bearing manufacturers range from 500 to 1,000 units per type, with a production lead time of 30‑45 days after order confirmation. Samples can be requested for laboratory testing of hardness, load capacity and dimensional accuracy. Verify that the HS codes on the commercial invoice match the catalogue entries (8484.90 for washers, 8482.50 for cylindrical rollers) to avoid customs discrepancies.

What bearing types are listed in Changzhou Zhihua Bearing’s catalogue?

The supplier lists axial needle bearings, inner rings, stud type track rollers, bearing washers (HS 8484.90) and cylindrical roller bearings (HS 8482.50). Each item falls under the broader bearing categories covered by HS chapters 8482 and 8484.

What material is used for the bearing washer?

The bearing washer is produced from high‑quality spring steel, specified as SK5 or SK7 grade. This material provides a typical hardness of 58‑62 HRC and good fatigue resistance for vibration damping.

Which steel grades are offered for the cylindrical roller bearing?

Cylindrical roller bearings are offered in chrome steel GCr15 and stainless steel grades 440C/SS440. These grades are chosen for high load capacity and corrosion resistance respectively.

What HS codes apply to the listed products?

Bearing washer - HS 8484.90; cylindrical roller bearing - HS 8482.50. The other components (axial needle bearing, inner ring, stud type track roller) are classified under the broader HS chapters 8482 (rolling bearings) and 8484 (bearing parts).

What documentation should a buyer request before purchasing?

Buyers should request material certificates, hardness test reports, dynamic and static load rating data, dimensional drawings, and evidence of ISO 9001 quality‑management compliance. Additional certifications such as ISO 14001 or CE marking may be required for specific markets.

How are these bearings typically packaged and shipped?

Bearings are usually packed in moisture‑resistant wooden crates or reinforced corrugated boxes, often with an anti‑corrosion coating. Sea freight under FOB or CIF Incoterms is the common shipping method for bulk orders.

What are typical minimum order quantities and lead times?

Standard MOQ for Chinese bearing suppliers is often 500 units per item, with a production lead time of 30‑45 days after order confirmation. Larger or customized orders may require longer lead times.

Which markets commonly import Chinese bearing components?

European Union countries, the United States and Southeast Asian manufacturing hubs are frequent importers of Chinese rolled‑bearing products, driven by demand for industrial machinery, automotive parts and equipment manufacturing.