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Double-row cylindrical roller bearing, 85 x 130 x 34 mm, 1:12 tapered bore, machined brass cage, precision class P5 with tightened running accuracy. Sold as 1 piece.
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| MFR / Brand | Consolidated |
|---|---|
| MPN | NN3017KMP51 |
| Model | NN 3017 K M P51 |
| Bearing Type | Cylindrical Roller Bearing, Open |
| ID | 85 mm |
| OD | 130 mm |
| Width | 34 mm |
| Material | Bearing Steel |
|---|---|
| Series | NN3000 |
| Condition | New |
| Base Number | NN3017 |
| Industry Terms | double row cylindrical roller bearing, precision spindle bearing, taper bore roller bearing, SP class spindle roller bearing |
| Common Misspellings | NN3O17KMP51, NN301 7KMP51, NN3017KMP5I, NNU3017KMP51, Consolodated, Consoladated |
| Application Types | machine tool spindles, lathe headstocks, milling and boring spindles, precision grinding spindles, rolling mill gearboxes |
| Bore Shaft Size | 85 mm (3.3465 in), 1:12 taper |
| Mpn Variants | NN3017KMP51, NN 3017 K M P51, NN-3017-K-M-P51, NN3017KM P51, NN3017KMSP |
| Arrangement Configuration | Non-locating radial position; taper bore mounts directly on a tapered journal, no adapter sleeve |
| Precision Class | P51 (class 5 with tightened running accuracy) |
| Min Temp | -40 °C |
| Cage Type | Machined Brass |
| Dynamic Load Rating | 134 kN |
| Static Load Rating | 186 kN |
| Precision Rating | ABEC 5 / P5 |
| Rolling Elements | Cylindrical |
| Max Temp | 150 °C |
| Item Weight | 3.55 lbs |
| Cage Material | Brass |
| Number Of Rows | 2 |
| Bore Type | Tapered |
| Snap Ring Included | Without Snap Ring |
| Harmonization Code | 8482.50.00 |
| Design Units | Metric |
| Internal Clearance | CN |
| Part Number | NN3017KMP51 |
| Cross Reference 1 | NN3017K (base tapered-bore designation) |
|---|---|
| Cross Reference 2 | NN3017 |
| Cross Reference 3 | RKW NN3017KMP51 |
A precision double-row cylindrical roller bearing in the NN3017 envelope, 85 mm bore × 130 mm outside diameter × 34 mm width, with a 1:12 tapered bore, a machined brass cage and a P51 precision class.
NN — double-row cylindrical roller bearing, integral inner-ring flanges, separable outer ring
30 — dimension series 30
17 — bore code, 85 mm bore
K — 1:12 tapered bore
M — machined brass cage
P51 — precision class 5 dimensional tolerance with tightened running accuracy, the machine tool spindle grade
Two rows of cylindrical rollers in a narrow section carry very high radial load with high radial stiffness and no axial capacity, so axial location comes from a separate thrust or angular contact bearing. The K tapered bore seats directly on a 1:12 tapered spindle journal; axial draw-up on that taper sets radial internal clearance and preload, which is how this family is adjusted in service. P51 tightens bore, outside diameter and radial runout well beyond normal class, which is what keeps spindle runout low at the tool. The machined brass cage tolerates higher temperature and shock loading than a polyamide cage and suits oil-jet or oil-mist lubrication.
Unit quantity: 1 Pc
Bore: 1:12 taper, mounted directly on a tapered journal
Rows: 2, cylindrical rollers
Clearance is set by axial draw-up of the inner ring along the tapered journal and measured with a bore gauge before and after seating. No adapter sleeve is involved. The outer ring is separable and stays paired with its own roller-and-inner assembly.
Written also as NN 3017 K M P51, NN-3017-K-M-P51, NN3017KMSP and NN3017KM P51. Same-envelope NN3017 bearings with a cylindrical bore, a pressed-steel or polyamide cage, or a normal precision class are related sizes rather than interchanges.
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