SKF 6203-ZTN9/C3LHT23 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Other brands for this category
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Decoding SKF 6203-ZTN9/C3LHT23
- 62Series
- Deep groove ball bearings, 62 series. Series differ in outside diameter and width even when the bore is the same.
- 03Bore
- Bore 17 mm: by standard, 03 designates 17 mm.
- ZTN9/C3LHT23Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6203 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6203-ZTN9/C3LHT23 measures 17 mm across the bore and 40 mm across the outside diameter; its width is 12 mm (17 x 40 x 12 mm).
SKF 6203-ZTN9/C3LHT23 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 6203-ZTN9/C3LHT23 and any equivalents.
SKF ZTN/C3LHT deep groove ball bearings are built to handle radial and axial loads where extra internal clearance and a high-performance grease are needed. A shield keeps contaminants out and holds lubricant in, so these bearings work well in tough conditions. MR Industrial Accessories supplies this SKF line as part of its bearing offering.
Reading the part number helps you pick the right bearing. The base number, like 6002, 6202 or 6203, tells you the size and dimension series. The ZTN part covers the sealing setup: Z means a shield, TN stands for a synthetic cage, and the 9 is an internal variant. C3 means the internal radial clearance is larger than standard. LHT indicates a high-performance grease, usually synthetic and made for high temperatures. So a 6203-ZTN9/C3LHT23 is a 62 series bearing with a Z shield, TN cage, C3 clearance and LHT grease.
You will find these bearings in many industrial settings across the United States and Latin America. They show up in electric motors, pumps, fans, compressors and machine tools where heat and speed call for a stable grease and the right clearance. Automotive parts like alternators and tensioners also use them, as do power transmission systems. Because they take combined loads and have a shield, they suit dusty or moderately humid places common in manufacturing and processing.
When choosing a bearing from this series, pay attention to internal clearance. C3 means more clearance than standard, which is useful with interference fits or when the inner and outer rings see different temperatures. The ZTN shield blocks particles but is not liquid-tight; if moisture is a concern, look at variants with rubber seals. LHT grease is made for high temperatures and long life, but check that it works with your environment. During installation, keep everything aligned and avoid hits that could harm the raceways. A clean housing and shaft are a must to keep contamination out.
For equivalents, SKF ZTN bearings with C3 and LHT suffixes can often be swapped with other brands that use the same standardized designations. But extra letters can differ between makers—some use their own codes for synthetic cages or special greases. Always check critical dimensions and operating conditions before substituting one brand for another. MR Industrial Accessories can help you figure out interchangeability.
To get a quote on these SKF bearings, send the full code via WhatsApp or email. At MR Industrial Accessories, we reply promptly with the technical and commercial details you need for your application. We can also suggest equivalents and help you choose the right bearing.
More SKF versions in the 6203 series
SKF lists these 6203 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 6203 ETN9
- SKF 6203 N
- SKF 6203 NR
Dimensions
17 x 40 x 12 mm (d x D x B): boundary dimensions for basic designation 6203, according to ISO 15.
- Bore
- 17mm
- Outside diameter (D)
- 40mm
- Width (B)
- 12mm
Same size, other brands
Other brands' pages with basic designation 6203: 17 x 40 x 12 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 6203-ZTN9/C3LHT23 bearing: what are its dimensions?
- SKF 6203-ZTN9/C3LHT23 measures 17 mm across the bore and 40 mm across the outside diameter; its width is 12 mm (17 x 40 x 12 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6203.
- What does the C3 suffix mean in these bearings?
- C3 indicates an internal radial clearance that is larger than standard. It is used when assembly conditions or temperature differences between inner and outer rings require extra clearance to prevent excessive preload.
- Is LHT lubrication suitable for high temperatures?
- Yes, LHT refers to a high-performance grease, typically synthetic, designed to handle elevated temperatures and extend bearing life. Check the specific temperature range for your application.
- Can I replace an SKF ZTN bearing with one from a different brand?
- In general, bearings with standardized designations are interchangeable between brands, but additional suffixes may vary. Verify dimensions, internal clearance and lubricant type before replacing. Contact us via WhatsApp or email for advice.