K32X37X17 bearing: complete specifications & equivalents
The K32X37X17 is a DIN 5402 radial bearing sized 32 x 37 x 17 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 32 mm |
| Outer diameter D | 37 mm |
| Width B | 17 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 19 kN |
| Basic static load rating C0 | 35.5 kN |
| Fatigue load limit Pu | 4.25 kN |
| Reference speed (thermal) | 13000 rpm |
| Limiting speed (mechanical) | 14000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 19 g |
| Manufacturer designation | K 32x37x17 |
| 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 | 1.26 in |
|---|---|
| Outer diameter D | 1.457 in |
| Width B | 0.669 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 2.5 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) | 12 of 22 |
| Bore above smallest K-series size | 29 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the K32X37X17 model number is decoded
For pivots and crank pins where every millimetre of radial height counts, SKF supplies K 32x37x17: needle rollers in a pressed cage (DIN 5402 boundary plan), dimensioned Fw 32 × E 37 × B 17 mm. Reading the designation: K marks the needle roller and cage assembly, the three numbers give Fw 32 (shaft journal), E 37 (assembly outside diameter) and B 17 (width) in millimetres — the machine parts complete the bearing. SKF supplies these assemblies in single rows as tabulated; the cage quality determines the speed ceiling, and the catalogued 14,000 r/min limiting speed assumes a precision ground journal and bore. Speed planning separates the two ceilings: 13,000 r/min thermal reference and 14,000 r/min mechanical limiting — needle bearings tolerate high rpm only with adequate lubricant film at the 32 mm seat. Lubrication reaches both raceways through the open cage windows; grease the bore and journal before assembly, since after fitting the 17 mm narrow cage cannot be relubricated through a closed housing.
Typical equipment & failure modes
Common applications
- rocker arm and rocker pin pivots on camshafts
- pump and gearbox idler gears running on hardened pins
- hinge and pivot joints in printing and textile machinery
- universal joint crosses on commercial vehicles
Known failure patterns
- needle edge loading and raceway denting when the shaft deflects beyond the compensation range
- cage pocket wear and roller skew after sustained operation with too little radial preload
- grease starvation at the roller ends when relubrication intervals are stretched in dirty duty
- electrical erosion on VFD-driven shafts without brush or insulated mounting
- 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 32 mm bore, verify shaft deflection against the needle length: these rollers tolerate little edge loading, and a simply supported span between 32 mm seats can bend past the compensation range long before the load rating is exhausted.
- 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 32x37x17 shares its 32×37×17 mm outline with inner-ring and sealed siblings whose ratings differ — the family letters are part of the specification, not decoration.
- The 19/35.5 kN ratings and 19 g mass are SKF catalogue values transcribed from ch. 7.1 of PUB BU/P1 17000 (PDF table page 618); combined-type axial ratings appear in the text above because the structured record carries radial values only.
Frequently asked questions
What does K 32x37x17 mean in SKF part numbering?
K = needle roller and cage assembly (DIN 5402); the three figures give Fw 32 mm (shaft journal), E 37 mm (complement outside diameter, matched by the housing bore) and B 17 mm width. TN marks the glass fibre reinforced PA66 cage.
Does the K 32x37x17 need a hardened and ground shaft?
No. In this execution the 32 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 32x37x17?
Slide the assembly over the ground 32 mm journal with a mounting sleeve, bore the housing to E 37 mm, and retain with a washer spanning the cage. Never press against the cage or rotate before the bearing is lubricated and loaded.
Is the K 32x37x17 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.
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.