FAGNU1020E.M1A.P53Cylindrical Roller Bearing 100x150x24 mm Single Row Non-Locating NU Design Brass Cage P5 Accuracy C3 Clearance

Product Description

What this part is

A single-row cylindrical roller bearing, 100 mm bore by 150 mm outside diameter by 24 mm width, in the NU10 extra-light dimension series to DIN 5412-1. The NU design carries two integral ribs on the outer ring and a plain, ribless inner ring, so the roller and cage assembly can shift axially against the inner raceway. That makes it a non-locating bearing: it carries radial load and lets the shaft grow thermally while the position stays free of axial load.

Designation decode

NU: two ribs on the outer ring, plain inner ring, non-locating design with the inner ring separable from the outer ring and roller set.

10: NU10 dimension series, an extra-light section 24 mm wide across a 25 mm radial envelope.

20: bore code for a 100 mm bore.

E: reinforced internal design, giving a larger roller complement and higher radial capacity than the base design in the same envelope. The current Schaeffler equivalent suffix is XL.

M1A: two-piece machined brass cage, roller-guided.

P53: combination suffix for P5 accuracy together with C3 radial internal clearance.

Published performance data

Bore Diameter: 100 mm

Outside Diameter: 150 mm

Width: 24 mm

Basic Dynamic Load Rating Cr: 116,000 N

Basic Static Load Rating C0r: 135,000 N

Fatigue Limit Load Cur: 17,700 N

Limiting Speed: 9,000 rpm

Reference Speed: 4,150 rpm

Mass: 1.44 kg

Cage: M1, two-piece machined brass, roller-guided

Precision Class: P5

Internal Clearance: C3

Number of Rows: 1

Number of Ribs, outer ring: 2

Bore Form: straight cylindrical

Closure: open both faces

Rolling Elements: cylindrical rollers

Load Direction: radial

Bearing Position: non-locating

Operating Temperature Range: -30 deg C to +150 deg C

Mounting data

Chamfer Dimension r min: 1.5 mm

Chamfer Dimension r1 min: 1.1 mm

Shaft Abutment Diameter da: 106 mm min to 111 mm max

Housing Abutment Diameter Da max: 143 mm

Abutment Fillet Radius ra max: 1.5 mm

Abutment Fillet Radius ra1 max: 1 mm

Permissible Axial Displacement s: 2.9 mm, the total float between the roller set and the outer ring ribs, which sets how much thermal growth the position absorbs.

What these figures mean in practice

P5 accuracy tightens bore, outside diameter and running-accuracy tolerances well inside normal class, which is what suits this bearing to machine-tool spindles, precision gearboxes and grinding heads where shaft runout is part of the specification. C3 clearance is greater than normal, which preserves operating clearance where the inner ring runs hotter than the housing or where an interference fit on the shaft closes some of the built-in clearance.

The two-piece machined brass cage is roller-guided and dimensionally stable at elevated temperature. It handles oil-jet and oil-mist lubrication and rapid acceleration better than a pressed steel cage, and it is what carries the design to the 150 deg C top of the operating range.

The static rating of 135,000 N reads above the dynamic rating of 116,000 N. That is the published relationship for a line-contact cylindrical roller bearing, where the long roller-to-raceway contact gives very high resistance to permanent deformation under a stationary load.

Quantity and configuration

One bearing, open on both faces. Complete assembly: outer ring, cage, roller set and separable inner ring.

Interchange guidance

The current Schaeffler designation for this bearing is NU1020-XL-M1A-P53. Same-envelope alternatives from other makers appear as NU1020 with equivalent brass-cage and accuracy suffixes, for example SKF NU 1020 MA and NSK NU1020M. Related sizes rather than interchanges: NU1020-M1-C3 is the same geometry at normal accuracy class instead of P5, and NJ1020 and NUP1020 share the 100 x 150 x 24 mm envelope but locate the shaft axially, which is a different function.