Deep groove ball bearing 6306ZZ

Description

1. Product Overview

Deep groove ball bearing 6306ZZ is a robust, single-row deep-groove radial ball bearing with metal shields on both sides (ZZ), engineered for reliable rotary support in medium-duty industrial machinery. It provides low-friction rotational performance, precise radial load handling, and straightforward installation across a wide range of operating speeds and temperatures. Its key value proposition is dependable, low-maintenance bearing support that reduces downtime and extends equipment life, making it strategically important for operations that demand high uptime and predictable maintenance planning. Trusted across global supply chains, the 6306ZZ balances performance, cost-efficiency, and interchangeability for OEMs and MRO buyers.

2. Key Specifications & Technical Characteristics

• Bearing type: Deep groove ball bearing, single-row, ZZ (metal shields both sides).

• Bore (d): 30 mm; Outer diameter (D): 72 mm; Width (B): 19 mm (standard 6306 dimensions).

• Material composition: High-carbon chromium bearing steel (commonly AISI 52100 / EN ISO 683-17); shields: stamped steel.

• Heat treatment: Through-hardened raceways and balls; precision ground surfaces for consistent running.

• Internal clearance: Standard (C0) or available C2/C3 on request for thermal/operational requirements.

• Radial load capacity: Rated dynamic and static capacities per ISO/ABEC or equivalent spec sheets (specify on purchase order).

• Sealing/shielding: ZZ double-sided metal shields for effective contamination exclusion with low drag.

• Lubrication: Factory-filled with high-performance grease suitable for typical industrial applications; relubrication intervals dependent on duty cycle.

• Running accuracy: Supplied to industry standard tolerances (ISO/ABEC grade options available on request).

• Temperature range: Typical operating range -30°C to +120°C depending on lubricant choice; extended-temperature variants available.

• Surface finish: Hardened and ground raceways for consistent friction and wear properties.

• Packaging options: Bulk (poly-wrapped and packed in reinforced cartons or crates), palletized wooden cases, or shrink-wrapped trays; individual boxed units available for mixed orders.

• Shelf life: Indefinite when stored dry and clean; recommended storage: 0–50°C, humidity <65%, original packaging to prevent contamination.

3. Core Industrial Applications

• Primary industries: Manufacturing (machine tools, conveyors), automotive (auxiliary systems, transmissions), power generation, mining equipment (light to medium loads), HVAC systems, packaging machinery, and general industrial OEMs and MRO operations.

• Specific operational use cases: Shaft support in motors and gearboxes, idler and guide rollers, pulleys and fans, pump and compressor bearings, spindle and reducer applications where radial loads dominate with occasional axial load.

• Why it outperforms alternatives: The deep-groove geometry provides superior radial load capacity and accommodates moderate axial loads without complex arrangements; ZZ metal shields offer robust contamination protection with minimal rotational drag compared to rubber seals, improving efficiency at higher speeds. Standardized dimensions ensure interchangeability and rapid replacement, reducing downtime and inventory complexity.

• Efficiency, durability, cost advantages: Low rolling resistance improves energy efficiency; hardened, precision-ground components extend service life under cyclic loading; simple, proven design lowers unit cost and simplifies inventory management versus specialized bearing types.

4. Competitive Advantages

• Quality consistency: Manufactured from industry-standard high-chrome bearing steel and heat-treated to tight tolerances for reproducible performance across production lots.

• Supply reliability: Scalable production and established logistics channels ensure consistent availability for OEM and bulk MRO contracts.

• Logistics capability: Flexible packaging and palletization for containerized export, consolidated LTL shipments, and programmed replenishment (consignment/JIT) arrangements.

• Price competitiveness: High-volume production and standardized design yield favorable unit economics; tiered pricing for bulk (20 MT+) customers.

• Sustainability/environmental benefits: Long service life reduces replacement frequency and associated material waste; packaging optimized to minimize freight volume and protective materials can be specified from recycled/returnable options.

• Technical support and documentation: Comprehensive datasheets, load-speed charts, installation and maintenance guides, and material certificates (e.g., steel grade, hardness) supplied with orders or downloadable from supplier portal. Engineering consultation available for fitment, clearance, and lubrication selection.

5. Commercial & Supply Information

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

• Loading capacity (MT per container): Typical loading capacity depends on packaging and container type; as guidance:

  • 20 ft container approximate loading: 20 MT

  • 40 ft container approximate loading: 22–24 MT
    (Final loading figures confirmed per packaging configuration and palletization; supplier will provide exact container loading plan on order.)