SKF 6304-2Z Explorer Series Deep Groove Ball Bearing

Description

The SKF 6304-2Z is a high-quality Explorer series deep groove ball bearing. Engineered for superior performance, it accommodates both radial and axial loads in both directions. This versatile bearing is suitable for a wide range of industrial applications that require high rotational speeds and low friction. The Explorer class enhancements result in a longer service life, increased reliability, and reduced operational noise.

Specifications

• Brand: SKF
• Model: 6304-2Z
• Type: Single-Row Deep Groove Ball Bearing
• Bore Diameter (d): 20 mm
• Outside Diameter (D): 52 mm
• Width (B): 15 mm
• Sealing: Two metal shields (designation 2Z)
• Material: High-carbon chromium bearing steel

Label Info

• Manufacturer: SKF
• Part Number: 6304-2Z
• Series: Explorer
• EAN: 7316570205350

Application

Ideal for use in electric motors, pumps, gearboxes, conveyors, and general industrial machinery where protection against solid contaminants is required without increasing friction significantly.

Country of Origin

Made in Bulgaria.

CO2 Impact

By purchasing this surplus bearing, you help avoid the production of a new one, saving approximately 0.26 kg of CO2. This saving is equivalent to the emissions from driving a car for 1.3 kilometers.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

Question? What is the difference between a 2Z and a 2RSH seal on an SKF bearing?

A 2Z designation means the bearing has non-contacting metal shields on both sides, which are excellent for high-speed applications as they generate no extra friction. A 2RSH designation indicates contact seals made of Acrylonitrile-butadiene rubber (NBR) on both sides, offering superior protection against contaminants and moisture, but with slightly higher friction and lower speed limits.

Question? Is this SKF Explorer bearing pre-lubricated?

Yes, SKF 6304-2Z bearings are supplied pre-filled with a high-quality grease, designed to last the lifetime of the bearing under normal operating conditions. It is considered lubricated-for-life and does not require re-lubrication.

Question? What are the limiting and reference speeds for the 6304-2Z?

According to the SKF datasheet, the reference speed is approximately 30,000 r/min, and the limiting speed is around 18,000 r/min. These values can vary depending on lubrication, load, and cooling conditions.

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Friday, March 13, 2026