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NKI40/30

Needle Roller Bearing

Lead TimePOA
ISO 9001 Certified Authorised UK Distributor
NKI40/30 Needle Roller Bearing
INA
INA logo

INA NKI40/30 needle roller bearing with inner ring, 40x55x30mm. Large needle bearing for heavy industrial applications.

Price Match Promise

Found it cheaper elsewhere? We’ll match any UK competitor’s price on bearings in stock — call us before you buy.

17,000+ parts in stock Next-day UK dispatch UK distributor since 2010
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ISO 9001 Certified Free UK delivery over £150 30-day returns

Technical Dimensions & Load Ratings

Confirm these values match your shaft, housing and application requirements before ordering.

Dimensions

Bore Diameter (d)40mm
Outer Diameter (D)55mm
Width (B)30mm

Product Details

Part NumberNKI40/30
BrandINA
Bearing TypeNeedle Roller Bearing
Stock StatusExtended Stock

Technical Datasheet

Download full specifications for NKI40/30 — dimensions, load ratings, and material data.

No cross-reference part numbers are recorded for NKI40/30. Ask our team for equivalent part numbers.
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Engineering support

Our experienced MRO products specialists are on hand to offer practical solutions to your problems and can assist with an on-site visit.

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Frequently Asked Questions

What is a NKI40/30 bearing?

The NKI40/30 is a INA Needle Roller Bearing with a 40mm bore, 55mm outer diameter and 30mm width. It is Extended Stock at Buy Bearings.

What are the NKI40/30 dimensions?

The NKI40/30 measures 40mm bore (inner diameter) × 55mm outer diameter × 30mm width.

Is the NKI40/30 in stock?

The NKI40/30 is Extended Stock at Buy Bearings. Submit an enquiry or call our sales team for current stock and pricing (POA).

Related & Compatible Bearings

Same needle roller bearing, closest dimensions first — useful if you need a slightly different size or this part is unavailable.

NKI35/30 Needle Roller Bearing
NKI35/30
INA logo
POAPrice Match
Bore
35
OD
50
Width
30
INA NKI35/30 needle roller bearing with inner ring, 35x50x30mm. Extra-wide design for maximum load capacity.
Lead Time
NA6907-ZW-XL Needle Roller Bearing
NA6907-ZW-XL
INA logo
POAPrice Match
Bore
35
OD
55
Width
36
SealOpen
Cr/C0r54 / 86 kN
Speed6,700 rpm
Heavy-duty needle roller bearing with an inner ring, part of the X-life series for extended service life.
Lead Time
RNA4907 Needle Roller Bearing
RNA4907
IKO logo
POAPrice Match
Bore
42
OD
55
Width
20
IKO RNA4907 needle roller bearing without inner ring, 42x55x20mm. Large-capacity bearing for demanding applications.
Lead Time
NA4907 Needle Roller Bearing
NA4907
IKO logo
POAPrice Match
Bore
35
OD
55
Width
20
IKO NA4907 needle roller bearing with inner ring, 35x55x20mm. Large-capacity bearing for demanding applications.
In Stock

Related Parts — Seals & Bushings

Matching seals and bushings for 40mm shaft diameter — complementary components for your bearing.

40X50X7 R23 Seals
40X50X7 R23
Unclassified
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OD
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Width
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SealOpen
Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
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40X52X7 R23 Seals
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OD
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SealOpen
Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
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40X55X10 R23 Seals
40X55X10 R23
Unclassified
POAPrice Match
Bore
40
OD
55
Width
10
SealOpen
Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
In Stock
40X55X7 R23 Seals
40X55X7 R23
Unclassified
POAPrice Match
Bore
40
OD
55
Width
7
SealOpen
Unclassified Seals with Open seals. A versatile bearing suitable for a range of mechanical applications. Manufactured from Chrome Steel (SAE 52100) for durability and long service life. In Stock at Buy Bearings. Order by 1pm for next-day UK dispatch.
In Stock
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