SKF 6205-2RS NR C3 Ball Bearing 25x52x15 mm

Applications

The SKF 6205-2RS NR C3 is a high-quality, single-row deep groove ball bearing featuring rubber seals on both sides (2RS) and an external snap ring (NR) groove for secure axial positioning within a housing or bearing unit. With dimensions of 25 mm inner diameter, 52 mm outer diameter, and 15 mm width, this bearing is engineered for demanding industrial applications, providing long service life, high precision, and reduced maintenance requirements.

The C3 internal clearance allows the bearing to operate effectively under conditions of elevated temperature or higher rotational speed. Combined with the 2RS sealing system, it ensures consistent performance in harsh environments exposed to dust, moisture, or contaminants. It’s widely used in bearing housings, bearing units, electric motors, gearboxes, pumps, and production machinery—everywhere durability and precision are essential.

Advantages and Key Features

• Snap Ring (NR) groove: The outer ring includes a machined groove and retaining ring for axial locking, ensuring reliable positioning within the housing or bearing unit.

• 2RS Seals on both sides: Rubber contact seals effectively protect the bearing from contamination and grease leakage, extending service life and minimizing downtime.

• C3 Internal Clearance: Designed for applications with increased thermal expansion or higher speed—providing smoother operation and reduced wear.

• Universal dimensions (25x52x15 mm): Fully interchangeable and compatible with standard bearing housings and bearing units.

• SKF Quality: Manufactured by SKF, a global leader in bearing technology—ensuring top-tier material consistency, precision, and endurance.

Technical Data

• Type: Single-row deep groove ball bearing

• Dimensions: d = 25 mm, D = 52 mm, B = 15 mm

• Sealing: 2RS (rubber seals on both sides)

• Retaining feature: NR (snap ring groove)

• Internal clearance: C3 (increased)

• Manufacturer: SKF

• Applications: Bearing housings, bearing units, industrial drives, motors, pumps, conveyor systems, and machinery assemblies

• Key properties: sealed ball bearing with snap ring, high durability, low maintenance, easy installation

This bearing is particularly suited for applications where axial positioning and contaminant protection are critical. It reduces service frequency and operational costs, improving reliability and uptime across industrial systems.

FAQ

Q1: What does “NR” mean in SKF 6205-2RS NR C3?
A1: “NR” indicates that the outer ring has a machined groove with a snap ring, allowing the bearing to be securely fixed axially inside the housing or bearing block.

Q2: Why is the “C3” clearance important?
A2: The increased internal clearance (C3) allows for safe operation under thermal expansion or high-speed conditions. It prevents excessive friction, overheating, or premature bearing wear.

Q3: What are the benefits of 2RS seals?
A3: The 2RS rubber seals protect the internal bearing structure from dust, dirt, and moisture, ensuring long-term lubrication retention and reducing the need for maintenance.

Q4: Can this bearing be used in bearing housings or bearing units?
A4: Yes. Thanks to the NR snap ring and standard 25x52x15 mm dimensions, this model is perfect for modular bearing units and industrial bearing housings where quick installation and stable positioning are required.

Q5: What industries commonly use this SKF bearing?
A5: It is widely used in automation systems, pumps, conveyors, electric motors, fans, and other industrial machinery where high durability and minimal service are essential.