Deep groove ball bearings

Description

1. Product Overview

This deep groove ball bearing is a precision-ground, single-row, non-separable radial bearing manufactured from vacuum-degassed bearing steel. It serves critical rotating equipment in automotive, heavy machinery, and energy sectors. Its value proposition centers on minimizing frictional losses while sustaining high centrifugal loads. Strategically, it enables predictive maintenance cycles and reduces capital tied up in spare inventories, making it a cornerstone of lean manufacturing supply chains.

2. Key Specifications & Technical Characteristics

• Material composition: Chrome steel GCr15 (equivalent to AISI 52100) with 1.30–1.60% Cr, 0.95–1.10% C; heat-treated to 60–65 HRC.

• Purity / cleanliness: JIS K-4E level inclusion rating (max 0.5 mm² oxide/sulfide).

• Physical characteristics: Bright polished raceways, true circularity within 0.002 mm; radial internal clearance C3 (standard), outer diameter range 8–400 mm.

• Packaging options: VCI-coated paper wrap + individual PE bag + 5-layer corrugated export carton (max 48 pcs/carton) or industrial pails (200 pcs).

• Shelf life: 6 years if unopened, stored <65% RH, 0–40°C; grease life 5 years for lithium-based lubricant.

3. Core Industrial Applications

• Primary industries: Electric motor manufacturing, conveyor systems, agricultural machinery, wind turbines.

• Operational use cases: Motor rotor support (3000–15000 RPM), drive pulley shafts, centrifugal pump spindles.

• Why better than alternatives: Lower running temperature (ΔT ≤ 12°C vs. tapered roller bearings under same radial load) and acoustic noise ≤ 32 dB at 1800 RPM.

• Efficiency / durability advantage: Dynamic load rating C_r up to 29.8 kN (size 6206); lifetime L10h = 25,000 hours at rated load. 18% less torque than standard deep groove bearings from cast steel rings.

4. Competitive Advantages

• Quality consistency: 100% vibration testing (VELOCITY grade V3) and bore tolerance P6 as per ISO 492; lot traceability to heat number.

• Supply reliability: 98.5% on-time dispatch rate with buffer stock at NL, SG, and US hubs.

• Logistics capability: Mixed container shipping (LTL) available with ≤ 15-day lead time to major ports.

• Price competitiveness: Tier-1 performance at 22–27% below SKF/FAG list prices on annual contracts.

• Sustainability: Grease filled with biodegradable ester-based lubricant option; packaging uses 70% recycled cardboard.

• Technical support: Full CAD step files, interference fit calculation sheets, and bearing lifetime prediction report upon request.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 1,000 units per SKU or 20 metric tons (≈5,500–18,000 bearings depending on size).

• Bulk loading capacity: 22 MT per 20-ft container (standard palletized, shrink-wrapped).