EKB Brand NUTR45100 Support Roller Bearing | 45x100x32 mm | Full Complement Needle Rollers

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SUPPORT ROLLER / YOKE TYPE TRACK ROLLER

NUTR45100 Support Roller Bearing

45×100×32 mm (1.772×3.937×1.260 in) · Double Row Full Complement Needle Rollers · Crowned Outer Ring R500

Need NUTR45100 or a replacement? Send us your original part number, drawing, or sample photo — we confirm dimensions, stock and lead time before quoting. Get a Quote →

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Specifications

Parameter	Metric	Inch
Bore diameter (d)	45 mm	1.772 in
Outer diameter (D)	100 mm	3.937 in
Inner ring width (B)	32 mm	1.260 in
Outer ring width (C)	30 mm	1.181 in
Inner ring rib diameter (d2)	55.2 mm	2.173 in
Chamfer r1 min	0.6 mm	0.024 in
Outer ring edge radius r min	1.1 mm	0.043 in
Rolling element	Double row needle rollers, full complement (no cage)
Radial clearance	CN group (0.030 – 0.060 mm)
Basic dynamic load rating (Cr)	72 kN
Basic static load rating (Cor)	115 kN
Outer ring profile	Crowned outer ring (radius R500 mm)
Seal	Sheet metal angle ring labyrinth seals (both sides)
Lubrication	Lubrication hole in inner ring; bearing pre-filled with grease
Hardness	58 – 64 HRC
Weight	1.43 kg

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Key Features

Full complement needle rollers. No cage — maximum number of rolling elements in a compact envelope, giving high radial load capacity (Cr 72kN / Cor 115kN).

Crowned outer ring (R500). The outer raceway is ground with a crown radius of 500mm to reduce edge stress under misalignment.

Integral flanges on inner ring. Fixed flanges locate the needle rollers axially in yoke-type and track-guided arrangements.

Sheet metal labyrinth seals. Angle-ring metal seals retain grease and block contamination without adding friction at low speeds.

Inner ring lubrication hole. Allows relubrication through the inner ring when the bearing is mounted on a shaft with a grease passage.

Typical Applications

Conveyor track guidance rollers
Cam drives and cam tracks
Material handling and lifting equipment
Industrial machinery track rollers
Textile and metalworking machinery

NUTR45100 vs NUTR45100-X

The two part numbers share the same bore, OD, widths, load ratings and internal design. The only difference is the outer ring profile:

Part Number	Outer Ring Profile	Best For
NUTR45100	Crowned (R500mm)	Applications with minor misalignment or deflection
NUTR45100-X	Cylindrical (flat)	Rigid, well-aligned tracks

Confirm the outer ring profile on your old bearing before ordering. Bore size alone does not guarantee interchangeability.

Every Bearing Is Inspected Before Shipment

We are a factory-direct bearing supplier, not a trader. Each NUTR45100 goes through dimensional inspection on precision instruments before it leaves our workshop. Inspection records are available on request.

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18,000 m² own factory, 13 automated production lines
42 precision inspection instruments; 100% dimensional check before shipment
ISO 9001:2015 certified; exported to 66 countries
Custom dimensions and non-standard constructions on drawing or sample

Frequently Asked Questions

Q: What are the dimensions of NUTR45100?
A: 45mm bore × 100mm OD × 32mm inner ring width × 30mm outer ring width.

Q: What is the difference between NUTR45100 and NUTR45100-X?
A: NUTR45100 has a crowned (barrel-shaped) outer ring, R500mm. NUTR45100-X has a cylindrical outer ring. All other dimensions and load ratings are identical.

Q: Does this bearing have a cage?
A: No. It is a full-complement needle roller design with no cage, to maximise the number of rolling elements and load capacity.

Q: What are the load ratings?
A: Dynamic Cr = 72kN, static Cor = 115kN, per the factory drawing.

Q: Can you provide inspection records?
A: Yes. Every bearing is dimensionally checked before dispatch; measurement data can be supplied with the order.

Q: Is this an INA / SKF original bearing?
A: No. EKB Brand replacement / equivalent bearing manufactured to the same dimensional envelope. We reference industry part numbers for identification only.

Related Support Rollers

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NUTR50110-X (50×110×32, cylindrical outer ring) →

Need NUTR45100 or NUTR45100-X?

Send your original part number, quantity, drawing or sample photo.