SKF 6306-2Z/GJN deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Other brands for this category
Ask us for alternatives. We check every equivalent against the part number and your application.
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Decoding SKF 6306-2Z/GJN
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 06Bore
- Bore 30 mm (06 × 5).
- 2Z/GJNSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6306 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6306-2Z/GJN measures 30 mm across the bore and 72 mm across the outside diameter; its width is 19 mm (30 x 72 x 19 mm).
SKF 6306-2Z/GJN belongs to deep groove ball bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 6306-2Z/GJN and any equivalents.
SKF 2Z/GJN deep groove ball bearings handle radial and axial loads in both directions. Each bearing has two metal shields (2Z) that keep the factory grease in place and block solid particles, which suits equipment where relubrication is difficult and reliable operation matters. MR Industrial Accessories supplies this series as part of its bearing range for customers in the United States and several Latin American countries.
Reading the code helps you order correctly. The base number gives the size and series. The 2Z suffix means two steel shields, one per side. GJN identifies the grease packed at the factory. If you send us the complete code from the old bearing, we can match it or suggest an equivalent.
Typical uses include electric motors, centrifugal pumps, fans, conveyors, machine tools and automotive components. The shielded design works well in dusty or moderately humid areas, where the goal is to cut lubrication work and keep the bearing running. For food, chemical and petrochemical plants, the same bearing is common in maintenance workshops.
When selecting a bearing, check the radial and axial load, the speed and the environment. The 2Z shields stop solid contaminants but do not seal against liquids. If water or vapors are present, look at versions with rubber seals instead. During mounting, align shaft and housing carefully and do not strike the shields. The GJN grease is already in place and, under normal conditions, does not need to be added.
SKF bearings in this series can be interchanged with other brands that use the same basic designation and equivalent suffixes, such as FAG, NSK or NTN. Always confirm tolerances and grease type, because these can differ between manufacturers. For replacements, the safest method is to consult a specialist and provide the full code engraved on the original bearing.
To request a quote for an SKF 2Z/GJN bearing, contact us on WhatsApp or by email. Send the code from the bearing and our team will reply promptly, helping you choose the right option for your application and suggesting equivalents when needed.
More SKF versions in the 6306 series
SKF lists these 6306 series versions in its catalogs, but they don't have a page on this site. Send us the part number of any of them and we'll find it and quote it.
- SKF 6306 ETN9
- SKF 6306 N
Dimensions
30 x 72 x 19 mm (d x D x B): boundary dimensions for basic designation 6306, according to ISO 15.
- Bore
- 30mm
- Outside diameter (D)
- 72mm
- Width (B)
- 19mm
Same size, other brands
Other brands' pages with basic designation 6306: 30 x 72 x 19 mm (d x D x B) per ISO 15.
What they share are the ISO 15 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 6306-2Z/GJN bearing: what are its dimensions?
- SKF 6306-2Z/GJN measures 30 mm across the bore and 72 mm across the outside diameter; its width is 19 mm (30 x 72 x 19 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6306.
- What does the 2Z suffix mean on an SKF bearing?
- It means the bearing has two metal shields, one on each side. They hold grease in and keep dust and particles out, but they are not watertight against liquids.
- Does GJN grease require maintenance?
- No. GJN grease is factory-filled for the life of the bearing under normal operating conditions. Relubrication is not needed, except in very severe or high-temperature applications.
- Can I replace an SKF 2Z/GJN bearing with another brand?
- Yes, if the other brand has the same basic designation and equivalent suffixes. Check tolerances and grease type, and if in doubt consult us with the complete code.