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NTN logo · NTN 6310MALLB6310MALLBDeep groove ball bearings
NTN 6310MALLB deep groove ball bearing

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NTN 6310MALLB deep groove ball bearing

Manufacturer Part Number6310MALLBDimensions: 50 x 110 x 27 mm (d x D x B)6310 bearing: all versions and brands →NTN 63 series: dimension table →
Brand
NTN
Category
Bearings
Series
MA
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Since 1945 · Martínez, Buenos Aires, Argentina

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How to read NTN 6310MALLB

63Series
Deep groove ball bearings, 63 series. For the same bore, each series has a different outside diameter and width.
10Bore
50 mm bore: 10 × 5.
MALLBSuffix
NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).

6310 is the standard (ISO) basic designation: it defines the type, the series and the bore.

Description

The NTN 6310MALLB bearing has a 50 mm bore, a 110 mm outside diameter and a 27 mm width (50 x 110 x 27 mm).

NTN 6310MALLB is a reference of deep groove ball bearing, within Bearings. Request a quote for 6310MALLB via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN MA series deep groove ball bearing is a single-row bearing with metal shield closure, designed to withstand moderate radial and axial loads in both directions. Its robust construction and metal shielding make it suitable for dusty or dirty environments, where protection is required without the high friction torque of a rubber seal. It is used in a wide variety of industrial applications, from electric motors to conveyors and pumps.

The MA series designation is interpreted as follows: the initial number indicates the size and dimension series (for example, 6209, 6210, 6308, 6310, 6312). The letters MA correspond to the bearing series with metal shields. In the examples 6209MALLB, 6210MALLB, 6308MALLB, 6310MALLB and 6312MALLB, the MALLB suffix identifies the specific closure configuration and possibly other internal features. To select the correct bearing, it is essential to identify the complete part number and check the required dimensions.

These bearings are used in industries such as food, chemical, mining and manufacturing in Argentina. They are common in electric motors, gearboxes, centrifugal pumps, fans, belt conveyors and agricultural machinery. Their ability to withstand combined loads and their resistance to contamination make them ideal for demanding environments. MR Accesorios Industriales sells this series to supply industrial plants and maintenance workshops throughout the country.

For correct selection, take into account the radial and axial load the bearing must withstand, as well as the rotation speed and environmental conditions. The metal shield closure (MA type) offers protection against large particles, but does not retain liquid lubricant or exclude fine moisture; if the environment is very humid or has liquids, consider a rubber seal. During mounting, ensure precise alignment between shaft and housing, and apply adequate lubrication according to the manufacturer's recommendations. Avoid striking the bearing directly on the balls or cage.

NTN MA series deep groove ball bearings are interchangeable with equivalent bearings from other brands that follow the same standardized ISO dimensions. When looking for a replacement, verify that the size code (for example, 6209) and the closure type (MA) match. If the original bearing has an additional suffix, such as MALLB, it is important to keep it to ensure the same configuration. MR Accesorios Industriales can advise you on equivalence with other brands and on selecting the right bearing for your application.

If you need to request a quote for an NTN MA series deep groove ball bearing, message us on WhatsApp with the complete part number (for example, 6209MALLB) or with the shaft and housing dimensions. At MR Accesorios Industriales we quote promptly and indicate the compatible alternative if necessary. We are your reliable partner in bearings and power transmission.

Dimensions

Boundary dimensions of the basic designation 6310 per ISO 15: 50 x 110 x 27 mm (d x D x B).

Bore
50 mm
Outside diameter (D)
110mm
Width (B)
27mm

Same size in SKF and other brands

Pages from other brands with the basic designation 6310: 50 x 110 x 27 mm (d x D x B) per ISO 15.

They share the boundary dimensions set by ISO 15, not the technical data: seals or shields, internal clearance, cage and load rating can differ by brand and suffix. We quote each one by its full part number.

Frequently Asked Questions

What are the dimensions of the NTN 6310MALLB bearing?
The NTN 6310MALLB bearing has a 50 mm bore, a 110 mm outside diameter and a 27 mm width (50 x 110 x 27 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 6310.
What does the MA suffix mean on an NTN bearing?
The MA suffix indicates that the bearing has metal shield closure. This type of closure protects against dust and particles, but is not sealed against liquids. It is ideal for applications requiring low friction and moderate protection.
How do I identify the bearing I need?
You need the complete part number shown on the original bearing, for example 6209MALLB. If you do not have it, measure the shaft diameter, outer diameter and width, and contact us on WhatsApp. We help you identify it and request a quote.
Are they interchangeable with other brands?
Yes, NTN MA series deep groove ball bearings follow standardized ISO dimensions, so they are interchangeable with equivalent bearings from other brands that share the same size code and closure type. Ask us about equivalences.
Request a quote for 6310MALLB via WhatsApp
Request a quote on WhatsApp