Spherical roller bearing 22220 C3

Description

1. Product Overview
   Spherical roller bearing 22220 C3 is a precision-engineered rolling-element bearing designed to accommodate radial loads and moderate axial misalignment in heavy-duty rotating equipment. Commonly used in gearboxes, industrial motors, crushers, and paper-, steel-, and mining-industry machinery, it delivers reliable radial load capacity with controlled internal clearance for thermal expansion. Its key value proposition is high load capacity combined with robust misalignment tolerance, reducing downtime and maintenance costs while extending equipment life. Strategically, the 22220 C3 is a core component for operations where uptime, predictable performance, and simplified shaft alignment directly impact production throughput and total cost of ownership.

2. Key Specifications & Technical Characteristics

• Bearing type: Spherical roller bearing, single row, solid brass or steel cage options available.

• Model designation: 22220 C3 (increased internal radial clearance C3 for thermal/assembly conditions).

• Bore diameter: 100 mm (standard 22220 nominal bore).

• Outer diameter: 180 mm (standard 22220).

• Width: 46 mm (standard 22220).

• Material: High-grade through-hardened chrome steel (commonly AISI 52100 / EN 1.3505), alternative stainless or corrosion-resistant alloys available on request.

• Heat treatment: Induction-hardened raceways and rollers to industry fatigue life standards (e.g., ISO/ABMA hardness ranges).

• Surface finish: Precision-ground raceways, Ra specified per customer requirement.

• Rolling elements: Forged and precision-ground rollers with optimized profile for load distribution.

• Internal clearance: C3 standard (greater than normal clearance to accommodate thermal expansion and shaft deflection).

• Dynamic and static load ratings: OEM-spec tables provided on request for L10/L50 life calculations.

• Lubrication: Compatible with mineral, synthetic, and high-temp lubricants; pre-greased option available.

• Sealing options: Open, shielded (Z), sealed (2RS) configurations available depending on contamination control needs.

• Tolerances: ISO/ABEC or equivalent industrial tolerances; bore and outer diameter tolerances per ISO 492 or customer specification.

• Operating temperature range: Standard -30°C to +120°C; high-temp variants up to +250°C.

• Weight (approx.): 6.2 kg per unit (varies by cage and material).

• Packaging: Industrial-grade carton, sealed plastic inner wrap, wooden pallet; corrosion inhibitor and desiccant upon request.

• Shelf life: Indefinite when stored dry and protected from contamination; recommend rotation and re-inspection after 5 years in long-term storage.

3. Core Industrial Applications

• Primary industries: Mining and aggregates, steel and metal processing, cement and construction materials, pulp & paper, power generation, heavy machinery manufacturing, and large gearbox OEMs.

• Specific operational use cases:

  • Primary and secondary crusher shafts where high radial loads and misalignment occur.

  • Gearbox carrier bearings in wind turbines and industrial gear drives requiring robust life under variable loads.

  • Mill and kiln support rollers subject to shaft deflection and thermal gradients.

  • Heavy-duty conveyor drive shafts and pulleys in bulk-handling plants.

• Why it outperforms alternatives:

  • Designed to tolerate shaft misalignment and deflection without rapid degradation, reducing field failures compared with cylindrical or deep-groove bearings.

  • Higher radial load capacity per unit volume than comparable ball bearings, enabling smaller footprint or higher load margins.

  • C3 internal clearance prevents brinelling and premature stress under thermal expansion, improving service life in high-temperature or variable-load environments.

  • Availability of hardened raceways and precision roller profiles increases fatigue life and reduces vibration relative to lower-grade alternatives.

4. Competitive Advantages

• Quality consistency: Manufactured to ISO tolerance and heat-treatment processes with traceable material certificates and batch testing to ensure repeatable fatigue life and dimensional accuracy.

• Supply reliability: Production capacity and inventory planning for bulk industrial buyers, scheduled re-supply, and safety-stock options to minimize production interruptions.

• Logistics capability: Palletized bulk shipping with export-compliant documentation, options for sea (20’/40’ container loading), air freight, and door delivery; custom packaging for long-haul and high-humidity routes.

• Price competitiveness: Scalable pricing for bulk orders (MOQ-tiered discounts), competitive landed cost through optimized packing density and freight consolidations.

• Sustainability: Extended service life reduces replacement frequency and waste; optional bearings made from recycled-content steel and environmentally-preferable packaging available on request.

• Technical support: Detailed product datasheets, load-life calculation support, installation and maintenance guides, and failure-analysis assistance for engineering teams.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT

• Loading capacity: Typical loading capacity per container (approximate; confirm at time of order based on packaging and cage/material choice):

  • 20-foot container: up to ~18–20 metric tonnes (subject to palletization and packing density)

  • 40-foot container: up to ~24–26 metric tonnes (subject to palletization and packing density)

• Lead times: Standard bulk lead time quoted on order confirmation; expedited production and shipment available for priority contracts.

• Documentation: Material Test Certificates (MTC), dimensional inspection reports, export paperwork, and recommended spare parts lists provided with shipment.