SKF 6311 TN2/HC5C5S0 deep groove ball bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Deep groove ball bearings
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Decoding SKF 6311 TN2/HC5C5S0
- 63Series
- Deep groove ball bearings, 63 series. Series differ in outside diameter and width even when the bore is the same.
- 11Bore
- Bore 55 mm (11 × 5).
- TN2/HC5C5S0Suffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
6311 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 6311 TN2/HC5C5S0 measures 55 mm across the bore and 120 mm across the outside diameter; its width is 29 mm (55 x 120 x 29 mm).
SKF 6311 TN2/HC5C5S0 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 6311 TN2/HC5C5S0 and any equivalents.
For machinery that must handle both radial and axial forces at speed, the SKF deep groove ball bearing in the TN/HC series is a common choice. Its single-row layout and deep raceways support high rotational speeds and dependable operation. MR Industrial Accessories LLC supplies this bearing line to maintenance and purchasing teams across the United States and Latin America.
The suffix string on these bearings tells you how they are built. Take 6212 TN2/HC5C5S0: 6212 is the basic type and size; TN2 points to a cage made of glass fiber reinforced polyamide; HC5 means the balls are silicon nitride ceramic; C5 sets internal radial clearance above the standard value; and S0 typically denotes a special heat treatment for dimensional stability. Reading these codes helps you match the bearing to the job.
Typical uses cover food processing, chemical, petrochemical and machine tool operations. Electric motors, pumps, fans and compressors benefit from the high-speed and high-temperature capability. Where lubrication is marginal or the surroundings are corrosive, the ceramic balls cut friction and wear.
When selecting, review radial and axial loads, speed and ambient conditions. C5 clearance suits cases where shaft and housing see different temperatures. The TN2 cage works well at high speeds, but check that the lubricant is compatible. During mounting, align carefully and avoid impacts that could chip the ceramic balls. Choose lubrication to match the cage and operating conditions.
For cross-referencing, SKF bearings with these designations can be swapped with other brands that share the same dimensions and specifications. Always confirm the suffixes, since they define ball material, clearance and other details. Not every brand offers the same options, so it is wise to check with our team before substituting.
To request a quote for an SKF deep groove ball bearing with TN/HC designation, send the full code by WhatsApp or email. MR Industrial Accessories LLC helps you pick the right option for your application and can suggest equivalents.
Dimensions
55 x 120 x 29 mm (d x D x B): boundary dimensions for basic designation 6311, according to ISO 15.
- Bore
- 55mm
- Outside diameter (D)
- 120mm
- Width (B)
- 29mm
Same size, other brands
Other brands' pages with basic designation 6311: 55 x 120 x 29 mm (d x D x B) per ISO 15.
- FAG6311-C6311-C-2Z6311-C-2HRS
- KOYO6311
- NSK63116311 ZZ
- NTN63116311ZZ6311LLB1 more →
- RKB6311
- TIMKEN63116311MB
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 6311 TN2/HC5C5S0 bearing: what are its dimensions?
- SKF 6311 TN2/HC5C5S0 measures 55 mm across the bore and 120 mm across the outside diameter; its width is 29 mm (55 x 120 x 29 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 6311.
- What does the HC5 suffix mean in an SKF bearing?
- HC5 indicates silicon nitride ceramic balls. They are lighter and more corrosion resistant than steel balls, which lowers friction and supports higher speeds. This makes them suitable for applications with limited lubrication or aggressive environments.
- When is a C5 internal clearance advisable?
- C5 clearance is larger than standard. It is recommended when shaft and housing temperatures differ significantly, or when high speeds are involved. The extra clearance compensates for thermal expansion and helps prevent excessive preload that could damage the bearing.
- Can I replace an SKF TN2/HC5C5S0 bearing with another brand?
- Yes, provided the other brand offers the same dimensions and features: ceramic balls, C5 clearance and a polyamide cage. Verify the suffixes and consult a specialist to ensure compatibility and performance.