Description

Lager 6205-2ZR TH 300 – Deep Groove Ball Bearing (Double Shielded)

The Lager 6205-2ZR TH 300 is a high-performance, single row deep groove ball bearing engineered for precision, reliability, and durability across a wide range of industrial and mechanical applications. With double metal shields (2ZR) and manufactured to TH 300 specifications, this bearing offers excellent resistance against contaminants while supporting high-speed, smooth operation with minimal maintenance.

Ideal for rotating machinery, electric motors, pumps, and gearboxes, this bearing belongs to the 6200 series—one of the most widely used bearing families. It features standard dimensions and is interchangeable with other industry-standard bearings, making it a convenient and cost-effective solution for both OEMs and maintenance engineers.

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Technical Specifications:

• Bore Diameter (ID): 25 mm

• Outer Diameter (OD): 52 mm

• Width: 15 mm

• Weight: Approx. 0.13 kg

• Dynamic Load Rating (C): 14.8 kN

• Static Load Rating (C₀): 7.8 kN

• Limiting Speed (Grease Lubrication): ~13,000 RPM

• Design: Single Row Deep Groove Ball Bearing

• Seal/Shields: 2ZR – Metal shields on both sides

• Internal Clearance: Standard or C3 (based on specification)

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Design & Functional Features

1. Deep Groove Ball Bearing Structure

This bearing consists of a single row of balls between inner and outer rings with deep raceway grooves. The geometry allows it to carry radial loads efficiently and accommodate limited axial loads in both directions. Its compact form factor and low-friction design enable quiet, smooth, and efficient performance.

2. 2ZR – Double Metal Shields

The “2ZR” suffix denotes non-contact metal shields on both sides of the bearing. These shields:

• Protect the internal components from dust, dirt, and other contaminants

• Help retain the factory-applied lubricant

• Allow higher-speed operation compared to rubber-sealed variants

• Reduce maintenance and increase service life in clean to moderately contaminated environments

3. TH 300 Specification

The TH 300 rating typically refers to an internal manufacturing or quality control classification, indicating that the bearing meets high manufacturing precision standards and is suitable for applications requiring enhanced stability, tolerance, and load capacity.

4. High-Speed Compatibility

Thanks to its low-friction shield design and high-precision steel components, the 6205-2ZR TH 300 operates reliably at high speeds. With proper lubrication, it can handle speeds up to 13,000 RPM, depending on the application environment.

5. High-Quality Material Construction

Constructed from hardened chromium steel, this bearing offers:

• Excellent resistance to wear and fatigue

• Dimensional accuracy and thermal stability

• Smooth, vibration-free operation

• Long-term durability even under repetitive or heavy loads

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Common Applications

The Lager 6205-2ZR TH 300 is suitable for a broad range of use cases across industries such as:

• Electric motors and generators

• Industrial fans and blowers

• Automotive components

• Pumps and compressors

• Conveyor systems and material handling equipment

• Agricultural and construction machinery

• HVAC systems and household appliances

It is also widely used in DIY tools, garden equipment, and other applications requiring quiet, efficient, and reliable rotary motion.

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Key Advantages

• Low maintenance due to effective sealing

• High load capacity in a compact design

• Reduced risk of contamination with metal shields

• Smooth, low-noise rotation

• Interchangeable with standard 6205 series bearings

• Cost-effective and durable solution for general-purpose machinery

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Operating Conditions

• Operating Temperature Range: -30°C to +120°C

• Mounting Tolerance: Standard fits; ensure proper shaft and housing alignment

• Lubrication: Factory pre-lubricated with grease

• Alignment Tolerance: Minimal misalignment acceptable—use proper housings

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Packaging & Handling

Each bearing is sealed and individually packaged to maintain cleanliness and protection during transport and storage. Avoid exposure to moisture and contaminants prior to installation. Use bearing pullers or presses for safe and damage-free mounting.

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Summary

The Lager 6205-2ZR TH 300 is a versatile, double-shielded deep groove ball bearing offering reliable performance, high-speed capacity, and long-lasting operation in a range of applications. With its precision-engineered design and TH 300-grade quality, it is ideal for manufacturers, maintenance professionals, and engineers seeking efficient motion control in space-constrained environments.

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