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NTNNN3011KC0NAUPDouble Row Cylindrical Roller Bearing – 55 mm ID, 90 mm OD, 26 mm Width, 1:12 Tapered Bore, C0NA

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Double row cylindrical roller bearing, 55 x 90 x 26 mm, 1:12 tapered bore, C0NA clearance. NTN NN3011KC0NAUP precision spindle bearing, 69,500 N dynamic.

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$178.06

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Specifications

Key Specifications

MFR / BrandNTN
MPNNN3011KC0NAUP
ModelNN 3011 K C0 NA UP
Bearing TypeCylindrical Roller Bearing, Open
ID55 mm
OD90 mm
Width26 mm

Technical Specifications

MaterialBearing Steel
SeriesNN3000
LubricantGrease or oil
Mpn VariantsNN3011KC0NAUP, NN-3011-K-C0-NA-UP, NN3011K, NN3011
Min Temp-40 °C
Dynamic Load Rating69,500 N
Static Load Rating96,500 N
Rolling ElementsCylindrical Roller
Max Temp120 °C
Limiting Speed7,300 rpm grease; 8,600 rpm oil
Number Of Rows2
Bore TypeTapered 1:12
Snap Ring IncludedNo
Internal ClearanceC0NA
Harmonization Code8482.50.00

Cross-References

Cross Reference 1SKF NN 3011 KTN/SP
Cross Reference 2FAG NN3011-AS-K-M-SP
Cross Reference 3NSK NN3011TBKRCC1P4
Cross Reference 4Koyo NN3011K
Seller Part Number: B-AA2B3#OC0M9S

Product Description

What this part is

NTN NN3011KC0NAUP precision double row cylindrical roller bearing with tapered bore, type NN. Bore Diameter: 55 mm. Outside Diameter: 90 mm. Width: 26 mm. Bore Type: Tapered 1:12. Internal Clearance: C0NA.

Decoding the designation

NN — double row cylindrical roller bearing, ribs on the inner ring, plain separable outer ring.

30 — ISO dimension series 30.

11 — bore code, 55 mm.

K — 1:12 tapered bore; mounts directly on a tapered spindle journal.

NA — non-interchangeable clearance: inner and outer ring are matched and supplied as a set.

What these specs mean in practice

Dynamic Load Rating: 69,500 N. Static Load Rating: 96,500 N. Limiting Speed: 7,300 rpm grease; 8,600 rpm oil. Operating Temperature: -40 °C to 120 °C. Two rows of rollers give very high radial stiffness for lathe and machining-centre spindle noses.

Mounting data

Roller outside envelope Ew: 81 mm. Shaft abutment da min: 61.5 mm. Housing abutment Da max: 82 mm. Fillet r: 1.1 mm; ras max: 1.0 mm.

Interchange guidance

Same envelope, tapered bore, precision class: SKF NN 3011 KTN/SP, FAG NN3011-AS-K-M-SP, NSK NN3011TBKRCC1P4, Koyo NN3011K.

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