K7X10X10-TN bearing: complete specifications & equivalents
The K7X10X10-TN is a DIN 5402 radial bearing sized 7 x 10 x 10 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 7 mm |
| Outer diameter D | 10 mm |
| Width B | 10 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Basic dynamic load rating C | 3.58 kN |
| Basic static load rating C0 | 3.75 kN |
| Fatigue load limit Pu | 0.415 kN |
| Reference speed (thermal) | 32000 rpm |
| Limiting speed (mechanical) | 36000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1 g |
| Manufacturer designation | K 7x10x10 TN |
| Standard | DIN 5402 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.1 needle roller and cage assemblies |
| Last verified | 2026-09-26 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.1 needle roller and cage assemblies) · extracted 2026-09-26
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.1 needle roller and cage assemblies); 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 & K-series range
| Bore d | 0.276 in |
|---|---|
| Outer diameter D | 0.394 in |
| Width B | 0.394 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 1.5 mm |
| Smallest bore in K-series | 3 mm |
| Largest outer diameter in K-series | 63 mm |
| Width range across K-series | 7–32 mm |
| Bore position in K-series (smallest first) | 5 of 22 |
| Bore above smallest K-series size | 4 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the K7X10X10-TN model number is decoded
SKF lists K 7x10x10 TN in the K series of needle roller and cage assemblies: needle rollers caged at 7×10×10 mm, designed to run directly on a ground, hardened shaft and inside a machined housing bore. K 7×10×10 is a boundary plan, not an envelope: the assembly has no rings, so E 10 mm is the needle set diameter the housing bore must match, and the 7 mm journal must be ground and hardened. SKF supplies these assemblies in single rows as tabulated; the cage quality determines the speed ceiling, and the catalogued 36,000 r/min limiting speed assumes a precision ground journal and bore. Minimum load matters: below roughly 0.02·C the rollers skid and smear; preloading the pivot or specifying a heavier execution avoids the glazing that pure oscillation produces on these raceways. Mounting: grind the 7 mm journal to the catalogue raceway tolerance after hardening to 58–64 HRC, bore the housing to E 10 mm H6, and slide the assembly in axially — pressing through the cage distorts it and locks the rollers.
Typical equipment & failure modes
Common applications
- universal joint crosses on commercial vehicles
- planetary gear pins in compact transmissions
- connecting rods of small compressors where radial height is critical
- rocker arm and rocker pin pivots on camshafts
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
- smearing of rollers and journal during idle periods because the radial section holds too little lubricant
Selection pitfalls — read before you substitute
- At Fw 7 mm the rolling elements are under two millimetres long — handle the K 7x10x10 TN like a watch part: one dropped assembly, one over-pressed cup or one coarse journal finish outweighs any catalogue rating difference.
- Reference and limiting speeds are different limits: the 32,000 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 7 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 3.58/3.75 kN ratings and 1 g mass are SKF catalogue values transcribed from ch. 7.1 of PUB BU/P1 17000 (PDF table page 616); combined-type axial ratings appear in the text above because the structured record carries radial values only.
Frequently asked questions
Which dimensions does the K 7x10x10 TN have?
A K 7x10x10 TN measures 7 mm bore/Fw × 10 mm outside diameter × 10 mm width (0.276 × 0.394 × 0.394 in). From SKF catalogue PUB BU/P1 17000: radial dynamic rating C 3.58 kN, static C0 3.75 kN, fatigue limit Pu 0.415 kN, limiting speed 36,000 r/min, reference speed 32,000 r/min, mass about 1 g.
What does K 7x10x10 TN mean in SKF part numbering?
K = needle roller and cage assembly (DIN 5402); the three figures give Fw 7 mm (shaft journal), E 10 mm (complement outside diameter, matched by the housing bore) and B 10 mm width. TN marks the glass fibre reinforced PA66 cage.
Does the K 7x10x10 TN need a hardened and ground shaft?
No. In this execution the 7 mm shaft journal is the inner raceway: it must be ground and hardened to 58–64 HRC (with matching housing bore quality on the outside). If the shaft cannot meet that, order the inner-ring sibling (NKI/NA execution) plus its ground inner ring instead.
What mounting mistakes ruin a K 7x10x10 TN?
Slide the assembly over the ground 7 mm journal with a mounting sleeve, bore the housing to E 10 mm, and retain with a washer spanning the cage. Never press against the cage or rotate before the bearing is lubricated and loaded.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 7.1 needle roller and cage assemblies on 2026-09-26. Read our editorial & correction policy.