K6X9X10-TN bearing: complete specifications & equivalents
The K6X9X10-TN is a DIN 5402 radial bearing sized 6 x 9 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 | 6 mm |
| Outer diameter D | 9 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 | 3.3 kN |
| Basic static load rating C0 | 3.2 kN |
| Fatigue load limit Pu | 0.345 kN |
| Reference speed (thermal) | 34000 rpm |
| Limiting speed (mechanical) | 38000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1.1 g |
| Manufacturer designation | K 6x9x10 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 | 0.236 in |
|---|---|
| Outer diameter D | 0.354 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) | 4 of 22 |
| Bore above smallest K-series size | 3 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the K6X9X10-TN model number is decoded
SKF lists K 6x9x10 TN in the K series of needle roller and cage assemblies: needle rollers caged at 6×9×10 mm, designed to run directly on a ground, hardened shaft and inside a machined housing bore. K 6×9×10 is a boundary plan, not an envelope: the assembly has no rings, so E 9 mm is the needle set diameter the housing bore must match, and the 6 mm journal must be ground and hardened. Because there are no rings, execution differences live in the cage: TN polymer cages reduce friction and noise, while the basic steel cage tolerates higher operating temperatures up to the lubricant limit. 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. The assembly is drawn on over a mounting sleeve that spreads the load around all rollers; never drive it home against the cage face, and retain it with a washer whose OD spans the cage, not 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
- abrasive paste formation from dust ingressing past open ends without effective housing seals
- brinelling of raceways from impact or pressing force transmitted through the rolling elements
- rapid raceway scoring when the shaft journal hardness drops below 58 HRC or the ground finish wears away
Selection pitfalls — read before you substitute
- At Fw 6 mm the rolling elements are under two millimetres long — handle the K 6x9x10 TN like a watch part: one dropped assembly, one over-pressed cup or one coarse journal finish outweighs any catalogue rating difference.
- Contamination, not fatigue, kills most small needle bearings: with raceways this narrow, one hard particle dents a full-width line — seal the housing even when the bearing execution itself is open.
- Do not interchange envelope-identical needle families blindly: K 6x9x10 TN shares its 6×9×10 mm outline with inner-ring and sealed siblings whose ratings differ — the family letters are part of the specification, not decoration.
- The 3.3/3.2 kN ratings and 1.1 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
Is the K 6x9x10 TN sealed?
No — this execution is open and depends on the housing sealing arrangement; grease it at assembly and keep the relubrication interval short in dirty duty.
Which dimensions does the K 6x9x10 TN have?
A K 6x9x10 TN measures 6 mm bore/Fw × 9 mm outside diameter × 10 mm width (0.236 × 0.354 × 0.394 in). From SKF catalogue PUB BU/P1 17000: radial dynamic rating C 3.3 kN, static C0 3.2 kN, fatigue limit Pu 0.345 kN, limiting speed 38,000 r/min, reference speed 34,000 r/min, mass about 1.1 g.
What does K 6x9x10 TN mean in SKF part numbering?
K = needle roller and cage assembly (DIN 5402); the three figures give Fw 6 mm (shaft journal), E 9 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 6x9x10 TN need a hardened and ground shaft?
No. In this execution the 6 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.
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.