Import 239/800 — Buy in wholesale FOB from Supplier in China

The 239/800 is a spherical roller bearing with an 800 millimetre bore diameter, manufactured by Disen Bearing Co., Ltd. in China. This bearing type is designed to accommodate heavy radial loads and moderate axial loads in both directions, with inherent self-aligning capability that compensates for shaft deflection or misalignment. The outer ring features a common spherical raceway, while the inner ring contains two symmetrical rows of barrel-shaped rollers guided by a central flange or cage. Disen Bearing Co., Ltd. constructs this unit from high-grade chromium steel (GCr15 / SUJ2), a material selected for its uniform hardness distribution and fatigue resistance under cyclic stress. The bearing's geometry permits angular misalignment of up to 1.5 to 2.5 degrees depending on application conditions, a critical feature for installations in mining conveyors, steel mill stands, and cement kiln supports where frame distortion is common.

The GCr15 / SUJ2 chromium steel composition contains approximately 1.3% carbon and 1.5% chromium, with controlled sulphur and phosphorus levels below 0.025% to reduce inclusion-related fatigue initiation. Through-hardening to 58-64 HRC on the raceways and rolling elements provides consistent wear resistance throughout the cross-section, essential for bearings subjected to heavy shock loads. The standard cage material is either machined brass or pressed steel, with brass offering superior vibration damping and steel providing higher speed capability. Typical radial internal clearance for this size category ranges from C3 to C4 (240-370 micrometres), though the exact value should be confirmed with Disen Bearing Co., Ltd. for the specific variant supplied. Lubrication grooves and holes in the outer ring are standard on many 239 series bearings, facilitating grease replenishment without dismantling adjacent equipment.

Primary applications for the 239/800 include main bearings in vertical roller mills for cement grinding, drive shafts in mining draglines and shovels, and gearbox supporting bearings in thermal power generation turbines. Steel producers utilise this size in continuous casting machine roll supports and hot strip mill finishing stands, where thermal expansion and heavy rolling forces coincide. The bearing's open design (unsealed) allows for oil bath or circulating oil systems in high-speed, high-temperature environments, though sealed variants may be available on request. Buyers should confirm with Disen Bearing Co., Ltd. the exact internal clearance designation, cage type, and whether the bearing is supplied with lubrication features or as a plain design. Packaging typically involves vacuum-sealed polyethylene wraps within wooden crates for ocean freight, though the supplier's specific export packing practice should be verified before order confirmation.

Disen Bearing Co., Ltd. maintains its registered office at Room 2105, Trend Centre, 29-31 Cheung Lee Street, Chai Wan, China, with operations based in mainland China. The supplier holds a 'harbor' trust tier classification, indicating a baseline verification status on the marketplace platform. The company's response rate is recorded at 0.00% with an average response time of zero hours, which suggests either a newly listed profile, inactive account, or data capture anomaly. Prospective buyers should note this communication signal and initiate contact through multiple channels to confirm current operational status and sales representative availability before committing to orders.

The listing presents Disen Bearing Co., Ltd. as a manufacturer of heavy-duty industrial bearings to ISO standards, with the 239/800 serving as a representative large-bore spherical roller bearing in their catalogue. No specific production capacity figures, factory audit certifications, or third-party quality accreditations are stated in the available profile data. The supplier advertises flexible minimum order quantities, multiple payment methods including letter of credit and telegraphic transfer, and export-oriented packaging, though exact terms require direct negotiation. Buyers are advised to verify the company's manufacturing location (whether the Chai Wan address represents headquarters, trading office, or production facility), request current ISO 9001 or ISO/TS 16949 certification copies, and confirm that the GCr15 / SUJ2 material specification refers to certified melt analysis rather than generic grade claims.