NX10 bearing: complete specifications & equivalents
The NX10 is a DIN 616 radial bearing sized 10 x 19 x 18 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 10 mm |
| Outer diameter D | 19 mm |
| Width B | 18 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 4.95 kN |
| Basic static load rating C0 | 4.55 kN |
| Fatigue load limit Pu | 0.53 kN |
| Reference speed (thermal) | 8500 rpm |
| Limiting speed (mechanical) | 9500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 25 g |
| Manufacturer designation | NX 10 |
| Standard | DIN 616 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.8 needle roller / thrust ball, full complement thrust part |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.8 needle roller / thrust ball, full complement thrust part) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.8 needle roller / thrust ball, full complement thrust part); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & NX-series range
| Bore d | 0.394 in |
|---|---|
| Outer diameter D | 0.748 in |
| Width B | 0.709 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 4.5 mm |
| Smallest bore in NX-series | 7 mm |
| Largest outer diameter in NX-series | 47 mm |
| Width range across NX-series | 18–30 mm |
| Bore position in NX-series (smallest first) | 2 of 9 |
| Bore above smallest NX-series size | 3 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| NX10-Z | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 10×19×18 mm envelope and equivalent catalogue ratings; NX10-Z is the combined needle/thrust ball execution — boundary-dimension interchangeable, execution differences (seals, shields, cage) apply. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the NX10 model number is decoded
Where a 10 mm shaft needs radial support plus one-direction axial location in minimal length, NX 10 from the combined needle roller / full complement thrust ball bearings stacks both functions: 19 mm OD, thrust part 5.07 kN (Ca) dynamic. In SKF nomenclature the X in NX flags the combined radial-plus-thrust construction; the figure 10 selects the size, and the catalogue adds the 19 mm envelope and 18 mm height. Full complement thrust parts run slower than caged ones: observe the 9,500 r/min limiting speed, and expect the thrust part to govern the thermal ceiling. Selection arithmetic for the combined unit: radial C 4.95 kN, radial C0 4.55 kN, axial dynamic 5.07 kN (Ca) and axial static 8.5 kN (C0a); combine them with the equivalent-load factors from the catalogue before checking L10. Mounting: assemble the thrust washer set with the keyed washer in the housing, fill the packed ball complement with grease so the balls adhere during fitting, and orient the thrust part toward the working axial load.
Typical equipment & failure modes
Common applications
- screw jack and lifting screw spindles
- valve and dosing pump stems with slow axial push
- light rotary tables under axial load
- oscillating pivots with steady axial preload
Known failure patterns
- needle edge loading and raceway denting when the shaft deflects beyond the compensation range
- polymer cage deformation when the local temperature exceeds the 120 °C sustained limit
- grease starvation at the roller ends when relubrication intervals are stretched in dirty duty
- corrosion pitting from condensation in intermittently operated machinery
- thrust washer raceway wear from reverse axial shocks the one-direction thrust part cannot carry
Selection pitfalls — read before you substitute
- On a 10 mm seat the housing bore quality dominates life: a bore 0.02 mm out of round pinches the 19 mm ring or cup into a lobed shape, and the rollers then trace the housing's geometry error, not the design load.
- Reference and limiting speeds are different limits: the 8,500 r/min reference is the thermal criterion under load, The limiting value is mechanical; the reference value is thermal under load, and grease choice moves it substantially.
- Hardness is load capacity: in families without an inner ring the 10 mm journal must hold 58–64 HRC with a ground finish; a surface that looks fine but sits at 45 HRC will rib the raceway within weeks.
- The thrust part is one-direction: reverse axial events — however brief — lift the rolling elements off the raceway, and the subsequent re-entry impact dents the washer face; mount the NX 10 facing the working thrust.
- Minimum axial load is a real requirement: below factor A 0.00038 the thrust elements skid, polish their raceways and lose them — springs or preload washers belong in the arrangement drawing, not the troubleshooting notes.
- The 4.95/4.55 kN ratings and 25 g mass are SKF catalogue values transcribed from ch. 7.8 of PUB BU/P1 17000 (PDF table page 656); combined-type axial ratings appear in the text above because the structured record carries radial values only.
Frequently asked questions
Which dimensions does the NX 10 have?
A NX 10 measures 10 mm bore/Fw × 19 mm outside diameter × 18 mm width (0.394 × 0.748 × 0.709 in). From SKF catalogue PUB BU/P1 17000: radial dynamic rating C 4.95 kN, static C0 4.55 kN, fatigue limit Pu 0.53 kN, limiting speed 9,500 r/min, reference speed 8,500 r/min, mass about 25 g. Axial ratings of the thrust part: dynamic Ca 5.07 kN (Ca), static C0a 8.5 kN (C0a), minimum load factor A 0.00038; the thrust set carries load in one direction only.
What does NX 10 mean in SKF part numbering?
NX = needle roller radial part + full complement thrust ball part for a 10 mm shaft; the catalogue plan completes 19 mm OD and 18 mm overall height. The packed thrust set maximises axial capacity at low speed.
Does the NX 10 need a hardened and ground shaft?
The radial needle part of the NX 10 runs directly on the 10 mm journal — harden to 58–64 HRC and grind it. The thrust washers are integral, so no separate inner ring exists; size the shaft for the raceway tolerances in the catalogue table.
What mounting mistakes ruin a NX 10?
Press on the ring faces only with a fitting sleeve, keep everything square to the 10 mm seat, and never transmit force through the rolling elements. Follow the catalogue's seat tolerances — the narrow needle contact forgives neither tilt nor burrs.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.8 needle roller / thrust ball, full complement thrust part on 2026-09-26. Read our editorial & correction policy.