6312 Bearing – Size, Stock & Today’s Price

The 6312 is a medium-series deep groove ball bearing with a 60 mm bore, a 130 mm outside diameter and a width of 31 mm. The 63 series is the heavy-duty choice for a given shaft: larger balls, a bigger outside diameter and more width than the 62, for higher loads and shock.

Its last two digits, 12, multiplied by 5 give the 60 mm bore. A full designation such as 6312-2RS-C3 means a 6312 with rubber seals on both sides and C3 internal clearance, the usual choice for electric motors.

Sharing the same 60 mm bore are the 6012 (60 × 95 × 18 mm), the 6212 (60 × 110 × 22 mm), the 6812 (60 × 78 × 10 mm) and the 6912 (60 × 85 × 13 mm). They all fit a 60 mm shaft, but each needs a different housing, so check the outside diameter and width before you order.

Why 6312 prices vary

• Genuine or copy: fakes sell far below the real price and fail early. We sell only genuine bearings.
• Brand and origin: each maker, and each country of manufacture, is priced differently.
• Version: sealed, shielded, C3, stainless and low-noise versions cost more than the open bearing.
• Quantity: bulk and repeat orders are priced lower.

So we quote today’s price for each brand rather than list one number. Ask for the 6312 price on WhatsApp.

6312 dimensions

Dimensions are the ISO 15 standard size, the same in every brand and seal type.

6312 load and speed ratings

Figures for the open SKF 6312 from SKF’s online catalogue (checked 9 Oct 2026). Other brands publish slightly different ratings for the same size. Sealed (2RS) versions have a lower limiting speed. SKF data sheet.

Other bearings for a 60 mm shaft

Same bore, different series: a bigger bearing carries more load but needs a bigger housing.

On a 60 mm shaft, the 6312 carries 54% more load than the slimmer 6212.

6312 variants

Every 6312 has the same outside dimensions. What changes is how it is sealed, its internal clearance and its material:

• 6312 (open): no shields or seals. For gearboxes and machines where oil or grease reaches the bearing.
• 6312 ZZ / 2Z: metal shields on both sides, greased for life. For clean, fast-running motors and fans.
• 6312 2RS: rubber seals on both sides (DDU at NSK, LLU at NTN). Better against dust and moisture.
• 6312 C3: internal clearance greater than normal, combined with any of the above (e.g. 6312-2RS-C3). The usual choice for electric motors.
• S6312 / SS6312: stainless steel for wet or corrosive conditions, usually marked with an S or SS prefix (SKF uses W). Supplied on request.

6312 equivalents by brand

Same size, written in each maker’s own style. Tap a brand to see how it numbers its bearings.

Where the 6312 is used

• Large electric motors
• Industrial pumps and compressors
• Gearboxes and reducers
• Conveyor drives
• Machine tools
• Crushers, mixers and process plant

Brands available for 6312

Is your 6312 genuine?

Counterfeit bearings are sold in many sizes and brands, including the 6312. Check that the marking on the ring matches the box exactly, that the brand’s own suffix style is used, and be wary of prices far below the market. How to spot a fake bearing.

Updated 18 October 2026