SKF · rolling bearings
SKF PNA 25/47
Needle roller bearings — manufacturer technical reference and quotation support in Saudi Arabia.
لطلب عرض سعر في السعودية، أرسل رقم القطعة أو المقاس والكمية والمدينة. يُرجى تأكيد التوافق والتوفر والسعر مع فريقنا.
| Bore diameter | 25 mm |
|---|---|
| Outside diameter | 47 mm |
| Width | 20 mm |
| Basic dynamic load rating | 22.9 kN |
| Basic static load rating | 38 kN |
| Reference speed | 13000 r/min |
| Limiting speed | 15000 r/min |
| Bearing part | Complete bearing |
| Number of rows | 1 |
| Outer ring type | Drawn cup with open ends |
| Aligning feature | With |
| Cage | Sheet metal |
| Number of flanges, outer ring | 2 |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Indicative carbon footprint for new product | 0.58 kg CO_2e |
| Product net weight | 0.157 kg |
| eClass code | 23-05-09-03 |
| UNSPSC code | 31171512 |
| Dimensions · Bore diameter · (d) | 25 mm |
| Dimensions · Outside diameter · (D) | 47 mm |
| Dimensions · Width · (B) | 20 mm |
| Dimensions · Raceway diameter inner ring · (F) | 30 mm |
| Dimensions · Shoulder diameter sleeve · (D_1) | 42 mm |
| Dimensions · Chamfer dimension sheet steel sleeve · (r) · min. | 0.8 mm |
| Dimensions · Chamfer dimension inner ring · (r_1,2) · min. | 0.3 mm |
| Dimensions · Permissible axial displacement from the normal position of one bearing ring relative to the other · (s) · max. | 0.5 mm |
| Abutment dimensions · Smallest permissible abutment diameter shaft · (d_a) · min. | 25 mm |
| Abutment dimensions · Smallest permissible abutment diameter housing · (D_a) · min. | 41 mm |
| Abutment dimensions · Largest permissible abutment diameter housing · (D_a) · max. | 42 mm |
| Abutment dimensions · Fillet radius · (r_a) · max. | 0.8 mm |
| Abutment dimensions · Fillet radius · (r_b) · max. | 0.3 mm |
| Calculation data · Basic dynamic load rating · (C) | 22.9 kN |
| Calculation data · Basic static load rating · (C_0) | 38 kN |
| Calculation data · Fatigue load limit · (P_u) | 4.8 kN |
| Calculation data · Reference speed | 13000 r/min |
| Calculation data · Limiting speed | 15000 r/min |
Family specifications and selection conditions
| Product description | Alignment needle roller bearings are self-aligning and offer a compact solution in applications where less space is available. Owing to their large number of rollers, they have a high load carrying capacity. Their internal design, where a convex outer ring meets two concave seating rings encased in a drawn sleeve, enables the bearings to compensate for initial errors of alignment. Bearings with an inner ring are used for applications where the shaft cannot be hardened and ground. |
|---|---|
| Manufacturer features | High radial load carrying capacity • Accommodate static initial misalignment • Low cross-sectional height |
Manufacturer references
Follow the complete manufacturer documentation for application restrictions, materials, tolerances and installation requirements. Limits may not apply simultaneously. We do not publish inferred stock, pricing or ratings.