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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 cylindrical roller bearing, 90 x 140 x 37 mm, 1:12 tapered bore for direct spindle mounting, machined brass cage, ABEC 7 super-precision class.
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$228.65
1 in stock
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| MFR / Brand | NSK |
|---|---|
| MPN | NN3018KMBE1CC1P4 |
| Model | NN3016K CC1 P4 NN3016 K |
| Bearing Type | Cylindrical Roller Bearing, Open |
| ID | 90 mm |
| OD | 140 mm |
| Width | 37 mm |
| Material | Bearing Steel |
|---|---|
| Series | NN3000 |
| Base Number | NN3018 |
| Industry Terms | Double row cylindrical roller bearing; precision spindle roller bearing; tapered bore cylindrical bearing; machine tool spindle bearing; ABEC 7 roller bearing; NN series bearing |
| Common Misspellings | NN 3018 KMBE1CC1P4; NN3018KMB E1 CC1 P4; NN3018KMBEICC1P4; NSK NN3018 K MB; cylindrical roler bearing |
| Bore Shaft Size | 90 mm (3.5433 in), tapered 1:12 |
| Mpn Variants | NN3018KMBE1CC1P4; NN3018K-MB-E1-CC1-P4; NN3018 K MB E1 CC1 P4; NN3018KMBP4; NN3018K; NN3018 |
| Rolling Elements | Cylindrical |
| Number Of Rows | 2 |
| Bore Type | Tapered 1:12 (K), mounts directly on a tapered spindle journal |
| Snap Ring Included | No |
| Harmonization Code | 8482.50.00 |
| Part Number | NN3018KMBE1CC1P4 |
| Cross Reference 6 | NSK NN3018KCC1P4 (same bearing, short-form designation) |
|---|
NSK NN3018KMBE1CC1P4 double-row cylindrical roller bearing, super-precision spindle type. Bore 90 mm, outside diameter 140 mm, width 37 mm. Tapered bore, open, two rows of cylindrical rollers, machined brass cage.
NN marks the double-row precision cylindrical roller family, 30 is the dimension series and 18 is the bore code, giving a 90 mm bore. K denotes a 1:12 tapered bore. MB is a machined brass cage. P4 is ISO Class 4, equivalent to ABEC 7, which the carton also states as ABEC7. CC1 is NSK’s non-interchangeable radial clearance code for this range.
On an NN cylindrical roller bearing the 1:12 tapered bore seats directly on a matching tapered spindle journal. Axial position of the inner ring on that taper sets the running clearance, so the fitter controls clearance by drive-up rather than by selecting a clearance class at purchase.
Two rows of cylindrical rollers give very high radial capacity and radial stiffness in a short axial envelope, which is why this type carries the front bearing position on machine tool spindles. The type is non-locating, so a separate bearing takes the axial load and sets shaft position. A machined brass cage tolerates high speed, high temperature and oil-jet lubrication better than a pressed cage, and ISO Class 4 holds ring runout to super-precision limits.
One piece, one complete double-row bearing.
Drive-up on the taper is measured, since it sets radial clearance directly. The outer ring of an NN type is a plain sleeve without ribs and locates axially in the housing bore.
Same-specification equivalents are the SKF NN 3018 K/SPW33, the FAG NN3018-AS-K-M-SP and the NTN NN3018K. The NN3016K also printed on this carton is an 80 mm bore in a 125 x 34 mm envelope, so it is a related size rather than a substitution.
$76.47
12 in stock
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