Cylindrical roller bearing NU2205

Description

1. Product Overview
   Cylindrical roller bearing NU2205 is a heavy-duty, single-row rolling-element bearing designed to support high radial loads and accommodate moderate axial displacement in one direction. Widely used in industrial rotating equipment, it delivers precision shaft guidance and long service life in gearboxes, electric motors, pumps, compressors, and heavy machinery. The bearing’s optimized roller geometry and hardened bearing steel construction provide superior load capacity, reduced friction, and predictable wear characteristics. Strategically, NU2205 enables higher uptime and lower life-cycle cost for mission-critical rotating applications, making it a core component for industrial OEMs and maintenance procurement programs.

2. Key Specifications & Technical Characteristics

• Bearing type: Cylindrical roller bearing, single-row, NU design (removable inner ring for axial displacement)

• Model: NU2205

• Material: Bearing-grade high-carbon chromium steel (AISI 52100 / ISO 683-17 equivalent)

• Heat treatment: Through-hardened and precision ground raceways and rollers

• Hardness: Typical range 58–64 HRC (surface hardness after heat treatment)

• Roller geometry: Cylindrical rollers, optimized crowning for uniform load distribution

• Dimensional specifications: Bore diameter 25 mm, outer diameter 52 mm, width 15 mm (standardized to ISO/ABMA dimensions)

• Tolerances: Class P0 (standard) or P6/P5 on request for precision applications

• Lubrication: Supplied unlubricated (open), compatible with grease or oil lubrication systems; seals/shields available on special order

• Running speed (reference): Dynamic rating up to application-specific limits; consult technical data for rpm thresholds under given loads

• Static and dynamic load ratings: per ISO/ABMA standard tables (available in technical datasheet)

• Surface finish: Ground raceways and rollers Ra typical ≤0.4 µm

• Corrosion protection: Standard phosphated or passivated finish; stainless or coated options available on request

• Packaging: Individual protective plastic wrap and carton; bulk packaging in wooden crates or palletized boxes for crate shipments

• Shelf life: Indefinite when stored in original packaging in dry, temperature-controlled environment (recommended 5–35 °C, <70% RH)

3. Core Industrial Applications

• Industries: Power generation, heavy machinery, mining, metallurgy, pulp & paper, marine propulsion, oil & gas rotating equipment, industrial gearboxes, and electric motor OEMs.

• Use cases: Main and pinion shafts in gearboxes, motor rotor support, pump and compressor bearings, conveyor drives, and spindle supports where high radial loads and reliable rotational guidance are required.

• Performance vs alternatives: Compared with ball bearings, NU2205 offers significantly higher radial load capacity for a similar footprint; compared with tapered roller bearings, it provides simpler axial displacement accommodation and lower friction in pure radial-load applications. The standardized design simplifies maintenance and interchangeability, reducing downtime and spare-part complexity.

• Practical benefits: Higher load-carrying capacity per unit volume, predictable wear patterns for scheduled maintenance, lower rotational losses when correctly lubricated, and simplified replacement due to standardized dimensions.

4. Competitive Advantages

• Quality consistency: Manufactured to ISO/ABMA standards with batch traceability and inspection records; tight dimensional and metallurgical control ensures uniform performance across lots.

• Supply reliability: Regular production runs, safety-stock inventory, and prioritized allocation for long-term contracts minimize supply disruption risk.

• Logistics capability: Bulk palletization, container loading expertise, and coordinated export packaging for global shipments; export documentation and customs support available on request.

• Price competitiveness: Economies of scale for bulk orders, competitive pricing tiers for long-term agreements, and transparent cost structures for OEM and MRO buyers.

• Sustainability: Material recycling pathways for bearing steels; options for reduced-packaging shipments and reusable pallet/crate programs to lower transport footprint.

• Technical support: Comprehensive technical datasheets, application engineering support, bearing selection guidance, and failure-analysis services available to support integration and lifecycle optimization.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT

• Loading capacity: Typical loading for sea freight containers depends on packing density; estimated net loading capacity approximately 20–22 MT per 20-foot container and 24–26 MT per 40-foot container for palletized bearings (final figures confirmed at order due to packaging variations)

• Lead time: Standard lead times available on request; expedited production and allocation for contracts.

• Documentation: Supplied with material certificates, dimensional inspection reports, and recommended lubrication/installation guidelines upon order.