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NSK spherical roller bearings · NSK 23128CKE4
NSK 23128CKE4 spherical roller bearing

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NSK 23128CKE4 spherical roller bearing

Manufacturer part number23128CKE4Size: 140 x 225 x 68 mm (d x D x B)More 140 x 225 x 68 mm bearings →NSK 231 series size chart →
Brand
NSK
Category
Bearings
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Decoding NSK 23128CKE4

231Series
Spherical roller bearings, 231 series. Series differ in outside diameter and width even when the bore is the same.
28Bore
Bore 140 mm (28 × 5).
CKE4Suffix
NSK suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.

23128 is the standard ISO basic designation, which sets the bearing type, series and bore.

Description

NSK 23128CKE4 measures 140 mm across the bore and 225 mm across the outside diameter; its width is 68 mm (140 x 225 x 68 mm).

NSK 23128CKE4 belongs to spherical roller 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 23128CKE4 and any equivalents.

Spherical roller bearings in the NSK line carry two rows of rollers running on a spherical raceway in the outer ring. That geometry lets the bearing take heavy radial loads together with axial loads in either direction, and it allows the shaft and housing to sit at a small angle to each other. Equipment with shaft deflection, awkward mounting positions or seats that are not perfectly aligned is where these bearings earn their place.

Reading the designation is the first step in ordering. Take *21319CKE4, *22326CKE4 and *23128CKE4: the digits at the front set the dimensional series, the C marks the optimized internal design, the K signals a tapered bore for mounting on a tapered shaft or with an adapter sleeve, and E4 covers the treatment or cage used in that product generation. The asterisk at the start points to a special execution inside the family. Quote the full designation exactly as it appears on the equipment.

Typical service conditions include conveyors, vibrating screens, mills, crushers, paper machines, industrial fans and mining equipment, in short any assembly where the shaft flexes or the housing lacks rigidity. When the bearing self-aligns, small mounting errors no longer concentrate stress on a few rollers, which helps the whole assembly last.

Selection comes down to radial and axial load, rotation speed and lubrication method. A K-suffix bearing with a tapered bore goes onto a tapered seat or an adapter sleeve, and internal clearance should be checked after tightening. Depending on the environment, the bearing may be open or fitted with shields or seals, and the grease or oil has to suit the operating temperature and the level of contamination. Aligning the rings at installation and supporting them correctly avoids early failure.

Dimensional standards make interchange possible between brands when series, bore type and internal design line up. Suffix letters, however, differ from one manufacturer to another and change how the bearing is mounted. Bring us an unidentified part or a competitor's part number and we will identify the compatible alternative for you.

For a quote, send the complete bearing part number, the equipment brand and a photo of the part if you have one. We supply customers throughout the United States and in Latin America, and we answer quote requests by WhatsApp or email.

Dimensions

140 x 225 x 68 mm (d x D x B): boundary dimensions for basic designation 23128, according to ISO 15.

Bore
140 mm
Outside diameter (D)
225mm
Width (B)
68mm

SKF and other brands, same size

Other brands' pages with basic designation 23128: 140 x 225 x 68 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

NSK 23128CKE4 bearing: what are its dimensions?
NSK 23128CKE4 measures 140 mm across the bore and 225 mm across the outside diameter; its width is 68 mm (140 x 225 x 68 mm). Those are the boundary dimensions standardized in ISO 15 for basic designation 23128.
What does the K suffix mean on a spherical roller bearing?
It means the bore is tapered, generally 1:12. The bearing mounts on a tapered shaft or with an adapter sleeve, which simplifies setting internal clearance and removal. Check clearance after mounting.
How do I request a quote for an NSK bearing from this series?
Send the complete part number from the bearing or the equipment manual by WhatsApp or email. Without a number, the main dimensions or a photo will do, and we will come back with the exact part number or size.
Can a bearing from another brand be replaced with an NSK one?
Yes, provided the main dimensions, bore type and internal design match. Suffix letters vary between manufacturers and affect mounting, so send us the original part number and we will confirm the equivalent.
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