Deep groove ball bearing 6309-2RS

Description

1. Product Overview

Deep groove ball bearing 6309-2RS is a precision-engineered radial ball bearing featuring dual rubber seals for robust contamination protection and long service life. Designed for rotating machinery, gearboxes, electric motors, pumps and industrial conveyors, it provides low-friction, high-speed performance and dependable radial load support. Its key value proposition is consistent bearing life and reduced maintenance downtime through superior sealing and tight manufacturing tolerances. Strategically, 6309-2RS bearings are a fundamental component across manufacturing, power generation and material-handling supply chains—critical for uptime, predictable maintenance planning, and total cost of ownership reduction.

2. Key Specifications & Technical Characteristics

• Bearing type: Deep groove ball bearing, sealed on both sides (2RS).

• Bore diameter: 45 mm.

• Outer diameter: 100 mm.

• Width: 25 mm.

• Material: High-chromium bearing steel (AISI 52100 / equivalent), hardened and ground.

• Seals: Dual rubber contact seals (NBR or equivalent) bonded to steel shield.

• Internal clearance: Standard radial internal clearance (C0/C3 available on request).

• Cage: Pressed steel cage (brass or polyamide options available on request).

• Ball material: Hardened bearing steel, precision ground.

• Precision class: Standard ISO P0 (higher grades P6/P5 available on request).

• Dynamic load rating (approximate typical): 31.4 kN (model-dependent — verify datasheet).

• Static load rating (approximate typical): 17.1 kN (model-dependent — verify datasheet).

• Limiting speed (approximate typical): 4,000–6,000 rpm depending on lubrication and operating temperature.

• Lubrication: Pre-lubricated with industrial-grade grease; relubrication intervals depend on duty cycle.

• Temperature range: Typical operational range -30 °C to +120 °C (high-temp grease variants available).

• Surface finish: Hardened and ground raceways with Ra consistent with bearing industry standards.

• Packaging options: Individual boxed, bulk boxed (10–50 pcs per inner box), palletized wooden crates, 20 ft container optimized bulk packing.

• Shelf life: Indefinite when stored dry and protected from corrosion; recommended first-in, first-out (FIFO) within 3–5 years for pre-lubricated units under recommended storage conditions.

3. Core Industrial Applications

• Electric motors and generators: Provides stable radial support and low vibration at high rpm, extending motor life and reducing noise.

• Gearboxes and reducers: Durable under combined radial and light axial loads; minimizes backlash and maintenance intervals.

• Pumps and compressors: Sealed design prevents ingress of liquids and particulates, preserving internal lubrication and preventing premature failure.

• Material handling and conveyors: Reliable in continuous operation environments with long service intervals; withstands shock and moderate misalignment.

• Machine tools and automation: High repeatability and precision for spindle supports and indexing applications.
  Why it performs better than alternatives: The 2RS sealing minimizes contamination and lubricant loss compared with open bearings, lowering failure rates in harsh environments. Hardened AISI 52100 raceways and precision ball tolerances deliver higher bearing life and predictable wear curves versus lower-grade materials. The combination of industry-standard dimensions and robust sealing makes it a low-risk, high-availability substitution in existing machine designs, reducing engineering change costs.

4. Competitive Advantages

• Quality consistency: Manufactured to ISO bearing standards with traceable heat-treatment and hardness records; batch-level quality control and sample testing available.

• Supply reliability: Bulk inventory and scheduled replenishment for industrial customers; capacity for long-term contracts and safety-stock programs.

• Logistics capability: Packaged and palletized for containerized shipping; export-ready documentation and consolidated shipping options for 20 ft / 40 ft containers.

• Price competitiveness: Commodity-level pricing with enterprise-tier discounts for volume contracts and multi-year purchase agreements.

• Sustainability: Long service life reduces replacement frequency and total material consumption; recyclable steel construction and reduced lubricant waste with sealed design.

• Technical support & documentation: Full datasheets, bearing life calculation support (L10/L50), installation and maintenance guidelines, and engineering responsiveness for custom cage or clearance options.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT.

• Loading capacity: Specify typical loading capacity per container (MT) for planning:

  • 20 ft container (typical): up to ~20–22 MT depending on packaging density and pallet configuration.

  • 40 ft container (typical): up to ~24–26 MT depending on packaging density and pallet configuration.
    (Exact container load depends on final packing specification; confirm at order placement.)