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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Double-row precision cylindrical roller bearing, 55 mm tapered bore x 90 mm OD x 26 mm wide, 1:12 taper, machined brass cage, ABEC 5, non-locating design for machine-tool spindles. Sold as 1 Pc.
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$144.50
1 in stock
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| MFR / Brand | Consolidated |
|---|---|
| Model | NN 3011 K M S P5 |
| Bearing Type | Cylindrical Roller Bearing, Open |
| ID | 55 mm |
| OD | 90 mm |
| Width | 26 mm |
| Material | Bearing Steel |
|---|---|
| Series | NN 30 |
| Base Number | NN3011K |
| Industry Terms | double row cylindrical roller, spindle bearing, tapered bore roller bearing, precision roller bearing, machine tool spindle bearing |
| Common Misspellings | Consolodated NN3011KMSP5, NN3O11KMSP5, NN3011 KMS P5, Consalidated NN3011, NN3011KMSPS |
| Application Types | Grinding spindles, turning and milling spindles, precision gearboxes, rolling mill work rolls |
| Bore Shaft Size | 55 mm (2.1654 in), tapered 1:12 |
| Mpn Variants | NN3011KMSP5, NN3011-K-M-S-P5, NN 3011 K M S P5, NN3011KMP5, NN3011K |
| Rolling Elements | Cylindrical |
| Number Of Rows | 2 |
| Bore Type | Tapered |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.50.00.00 |
| Part Number | NN3011KMSP5 |
A Consolidated NN3011KMSP5 double-row cylindrical roller bearing with a 55 mm tapered bore, a 90 mm outside diameter and a 26 mm width. It is a precision spindle bearing with a machined brass cage, ground to ABEC 5.
NN: double-row cylindrical roller design, rollers guided by the inner ring, outer ring ribless. 3011: 30 series, 55 mm bore, 90 mm OD, 26 mm width. K: 1:12 tapered bore. M: machined brass cage. S: Consolidated execution letter, retained as a search term. P5: precision class 5, equivalent to ABEC 5.
Two rows of cylindrical rollers give a long total contact line in a narrow section, so the bearing carries very high radial load and holds the shaft radially stiff. The design is non-locating: the ribless outer ring lets the shaft grow axially through the bearing as it heats, and axial location comes from a thrust or angular contact bearing elsewhere in the spindle. An NJ or NUP cylindrical bearing locates the shaft axially and a single-row NU has half the roller complement, so neither substitutes for this design.
Bore: 55 mm (2.1654 in), tapered 1:12. Outside diameter: 90 mm (3.5433 in). Width: 26 mm (1.0236 in). Number of rows: 2. Rolling elements: cylindrical rollers. Cage material: machined brass. Precision class: P5, ABEC 5. Axial location: non-locating. Closure: open.
Supplied as 1 Pc, bearing only.
The 1:12 tapered bore seats directly on a matching tapered spindle journal. This design does not use an adapter sleeve.
Genuine equivalents are P5 double-row tapered-bore cylindrical roller bearings in the same 55x90x26 mm envelope with a machined cage: SKF NN3011 KTN9/SP, FAG NN3011-AS-K-M-SP, NSK NN3011TBKRE44CC1P4 and URB NN3011K. The straight-bore NN 3011 is a related size rather than an interchange, because it needs a cylindrical shaft seat and gives no clearance adjustment.
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