Description

The SKF 6205-2Z/C3 is a high-performance, single row deep groove ball bearing engineered for durability, speed, and reduced maintenance in a wide range of applications. Manufactured by SKF, a global leader in bearing technology, this bearing combines superior design precision with robust material quality to deliver consistent, long-lasting performance in both industrial and automotive environments.

Part of SKF’s deep groove ball bearing series, the 6205-2Z/C3 model is particularly suitable for high-speed, moderate-load applications where reliability and efficiency are critical. It features metal shields on both sides (2Z) to protect against contamination and retain lubrication, along with a C3 internal clearance, allowing for thermal expansion and operation at higher speeds.

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Key Specifications:

• Bore Diameter (ID): 25 mm

• Outer Diameter (OD): 52 mm

• Width (B): 15 mm

• Weight: Approx. 0.13 kg

• Dynamic Load Rating (C): 14.8 kN

• Static Load Rating (C₀): 7.8 kN

• Fatigue Load Limit (Pu): 0.335 kN

• Limiting Speed (Grease): Up to 17,000 RPM (may vary)

• Clearance: C3 (greater than normal internal clearance)

• Shield Type: 2Z (metal shields on both sides)

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Design Features:

1. Deep Groove Ball Bearing Construction

The 6205-2Z/C3 is designed with deep raceway grooves that closely match the diameter of the balls. This geometry supports both radial loads and light axial loads in both directions, ensuring smooth, low-friction rotation and high load-bearing efficiency.

2. Metal Shields (2Z)

The 2Z designation indicates the presence of metal shields on both sides of the bearing. These shields:

• Prevent contamination from dust and debris

• Help retain the internal lubricant

• Minimize the need for frequent relubrication

• Enhance the bearing’s lifespan in moderately contaminated environments

Unlike rubber seals, metal shields do not contact the inner ring, which allows for higher rotational speeds with lower friction.

3. C3 Clearance

The C3 internal clearance allows for more space between the rolling elements and raceways than standard bearings. This feature is ideal for:

• High-speed rotation

• Applications with temperature variations

• Situations with thermal expansion

It ensures that the bearing remains stable and efficient even under increased thermal stress or during continuous high-speed operation.

4. Premium Material Quality

SKF uses high-grade chromium steel for the rings and balls, ensuring:

• High wear resistance

• Excellent fatigue strength

• Dimensional stability under dynamic loads

Each component undergoes strict quality control and precision machining to meet international standards.

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Applications:

The SKF 6205-2Z/C3 is widely used across diverse industries, thanks to its robust performance characteristics. Typical applications include:

• Electric motors

• Industrial gearboxes

• Pumps and compressors

• Fans and HVAC systems

• Automotive alternators and wheels

• Machine tools

• Textile machinery

• Home appliances

Its ability to operate at high speeds with low noise and maintenance makes it especially popular in motorized equipment and continuous-use machinery.

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Advantages:

• High load capacity for its size

• Metal shields provide enhanced protection

• C3 clearance supports high-speed operation

• Maintenance-free in most cases

• Low noise and vibration

• Easy installation and interchangeability

• Reliable performance across temperature variations

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Operating Conditions:

• Temperature Range: -30°C to +120°C (standard operating conditions)

• Mounting Position: Horizontal or vertical

• Lubrication: Pre-lubricated with high-quality grease; generally maintenance-free under normal use

• Misalignment Tolerance: Minimal – ensure accurate shaft alignment

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Summary:

The SKF 6205-2Z/C3 single row deep groove ball bearing is a versatile, efficient, and highly reliable solution for medium-speed, moderate-load applications. The SKF 6205-2Z/C3 is a single row deep groove ball bearing with metal shields on both sides and a C3 clearance for high-speed applications. With its precision-engineered design, dual metal shields, and increased internal clearance, it offers superior performance with minimal maintenance.

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