从China供应商批发进口61803 Bth-Zzc4 — FOB条款

The 61803 Bth-zzc4 is a deep groove ball bearing with a bore diameter of 17 mm, an outer diameter of 26 mm, and a width of 5 mm, built from chrome steel (GCr15) for wear resistance in continuous-duty applications. The zz suffix denotes metal shields on both sides, and the C4 clearance rating indicates greater than standard internal clearance to accommodate thermal expansion in elevated-temperature environments. Disen Bearing Co., Ltd. lists this unit for motors, pumps, and agricultural machinery where smooth rotational performance is critical.

The GCr15 chrome steel composition provides a typical hardness of 60-65 HRC after heat treatment, with standard dimensional tolerances to ISO 492 Class Normal for bore and OD. The metal shields (zz) are stamped steel with a synthetic rubber bond to the outer ring, offering particle exclusion without the friction penalty of full contact seals. C4 clearance is standard for applications with interference fits on the shaft or housing, or where operational temperatures exceed 80 degrees C, as the extra radial space prevents seizure during heat soak.

Typical buyers include industrial equipment distributors, agricultural machinery OEMs, and electric motor repair shops sourcing compact spare parts for Asian-manufactured equipment. The bearing suits installations where space is constrained and where shielded rather than sealed protection is adequate for the contamination environment. For trade terms, confirm the supplier's actual MOQ, available Incoterms, and whether lubricant fill is pre-applied or shipped dry, as these details are not stated in the listing.

Disen Bearing Co., Ltd. maintains a registered office at Room 2105, Trend Centre, 29-31 Cheung Lee Street, Chai Wan, Hong Kong, with its manufacturing base in mainland China. The supplier holds a harbor trust tier on the platform, which represents a baseline verification level rather than an audited or premium status. The listing shows a response rate of 0.00 percent and an average response time of zero hours, indicating no recorded buyer engagement through the platform messaging system.

The company profile does not disclose factory size, production capacity, number of employees, revenue figures, or specific client references. No ISO, CE, or other certification numbers are provided in the source data, and any claim of such credentials should be treated as unverified until documentation is requested directly. Buyers should treat the supplier's trade history and quality systems as unconfirmed and conduct independent due diligence, including factory audit or third-party inspection, before committing to volume orders.