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NTN spherical roller bearing · NTN 22318EMAD1
NTN 22318EMAD1 spherical roller bearing

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NTN 22318EMAD1 spherical roller bearing

Manufacturer Part Number22318EMAD1Dimensions: 90 x 190 x 64 mm (d x D x B)22318 bearing: all versions and brands →NTN 223 series: dimension table →
Brand
NTN
Category
Bearings
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Since 1945 · Martínez, Buenos Aires, Argentina

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How to read NTN 22318EMAD1

223Series
Spherical roller bearings, 223 series. For the same bore, each series has a different outside diameter and width.
18Bore
90 mm bore: 18 × 5.
EMAD1Suffix
NTN suffix: it defines the variant (sealing, cage, internal clearance or other features).

22318 is the standard (ISO) basic designation: it defines the type, the series and the bore.

Description

The NTN 22318EMAD1 bearing has a 90 mm bore, a 190 mm outside diameter and a 64 mm width (90 x 190 x 64 mm).

NTN 22318EMAD1 is a reference of spherical roller bearing, within Bearings. Request a quote for 22318EMAD1 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

The NTN spherical roller bearing is a component designed to support high radial loads and axial loads in both directions, with self-aligning capability. Its design with two rows of rollers and a spherical outer raceway allows it to compensate for angular misalignment between shaft and housing, even under severe conditions. It is used in applications where shaft deflection or mounting errors require tolerance, such as industrial transmissions, mining equipment, mills and heavy machinery. MR Accesorios Industriales sells the NTN line with technical advice to select the right execution.

The designation of the EMAD series in NTN bearings is interpreted as follows: the 223 series corresponds to spherical roller bearings with a wide section, two rows of rollers and a cylindrical bore. The EMAD suffix indicates a machined brass window cage, roller-guided, and a bore and groove design for lubrication. Examples such as 22314EMAD1, 22315EMAD1 and 22316EMAD1 show the progression of the bore diameter: the first two digits (22) identify the dimension series, and the next two (14, 15, 16) the diameter code. The final suffix 1 indicates an internal design variant. This nomenclature allows quick identification of the size and execution characteristics.

In Argentine industry, these bearings are used in crushing equipment, vibrating screens, cement mills, conveyor belts and pulp and paper machines. They also appear in speed reducers, presses and large industrial fans. Their ability to support combined loads and misalignment makes them suitable for mountings where the shaft flexes under load, such as belt or chain drives. In steel and petrochemical plants they are found in support rollers and rolling systems. MR Accesorios Industriales supplies these NTN bearings throughout the country, with a focus on the operational continuity of production processes.

To correctly select a spherical roller bearing, consider the radial and axial load, the rotational speed and the permissible misalignment. Sealing is key: open executions require external lubrication, while sealed ones retain lubricant and exclude contaminants. Internal clearance must be chosen according to the application: greater clearance helps compensate for thermal expansion. During mounting, an interference fit on the shaft and a housing with clearance are recommended, respecting initial alignment. Lubrication must be suitable for the speed and temperature; excess grease can raise the working temperature. The machined brass cage provides strength and stable guidance.

Spherical roller bearings are interchangeable between manufacturers if the main dimensions and execution type match. When replacing a bearing, it is essential to verify the complete code, including suffixes that define cage, sealing and clearance. Equivalent series from other brands may differ in construction details, so it is recommended to consult with specialists. At MR Accesorios Industriales we advise you to find the correct equivalent according to the original part code. If you need a specific variant, write to us on WhatsApp with the code or dimensions and we will quote it promptly.

To request a quote for your NTN spherical roller bearing, simply send us the complete code via WhatsApp. At MR Accesorios Industriales we respond promptly with availability and commercial conditions. We work with the main brands. If you have doubts about the designation or need technical assistance, our team is here to help. Write to us and we will quote the exact code or size you need.

Dimensions

Boundary dimensions of the basic designation 22318 per ISO 15: 90 x 190 x 64 mm (d x D x B).

Bore
90 mm
Outside diameter (D)
190mm
Width (B)
64mm

Same size in SKF and other brands

Pages from other brands with the basic designation 22318: 90 x 190 x 64 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 22318EMAD1 bearing?
The NTN 22318EMAD1 bearing has a 90 mm bore, a 190 mm outside diameter and a 64 mm width (90 x 190 x 64 mm). These are the standardised boundary dimensions (ISO 15) of the basic designation 22318.
What does the EMAD suffix mean in an NTN bearing?
The EMAD suffix indicates a machined brass window cage, roller-guided, and a bore and groove design for lubrication. It is a robust execution for demanding applications. The final number 1 indicates an internal design variant.
How do I choose the right spherical roller bearing for my equipment?
Take into account the radial and axial load, speed, misalignment and environmental conditions. Sealing and internal clearance are critical. If you send us the original part code or dimensions, we will advise you to select the correct execution.
Are NTN bearings interchangeable with other brands?
Yes, in general they are interchangeable if the main dimensions and execution type match. But suffixes may vary between manufacturers. To ensure compatibility, consult us with the exact code and we will indicate the appropriate equivalent.
Request a quote for 22318EMAD1 via WhatsApp
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