SKF · mounted bearings
SKF PF 20 TF
Ball bearing units — 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.
| Shaft diameter | 20 mm |
|---|---|
| Housing overall width | 16 mm |
| Pitch diameter of bolt holes of round and triangle flange type housing | 71.4 mm |
| Bearing width, total | 31 mm |
| Attachment bolt diameter | 8 mm |
| Basic dynamic load rating | 12.7 kN |
| Basic static load rating | 6.55 kN |
| Limiting speed | 8500 r/min |
| Note | Limiting speed with shaft tolerance h6 |
| Housing type | Flanged |
| Flanged housing type | Round |
| Number of bolt holes for fasteners | 3 |
| Fastening bolt hole type | Plain |
| Retaining feature, inner ring | Set screws |
| Bore type | Cylindrical |
| Rubber seating ring | Without |
| Material, housing | Pressed steel |
| Material, bearing | Bearing steel |
| Coating | Zinc-coated housing |
| Sealing, bearing | Seal and flinger on both sides |
| Sealing type | Contact, standard |
| Sealing, unit | Without |
| Lubricant | Grease |
| Relubrication hole | Without |
| Grease fitting | Without |
| Unit system | Metric |
| Product net weight | 0.33 kg |
| eClass code | 23-05-08-02 |
| UNSPSC code | 31171536 |
| Compliance with standard | ISO |
| Purpose specific | For agricultural applications |
| Sealing type, bearing | Contact, standard |
| Dimensions · Bore diameter · (d) | 20 mm |
| Dimensions · Outer diameter of inner ring · (d_1) · ≈ | 28.2 mm |
| Dimensions · Width of housing half · (A_2) | 8 mm |
| Dimensions · Top width · (A_4) | 2 mm |
| Dimensions · Width of inner ring · (B) | 31 mm |
| Dimensions · Distance from locking device side face to thread centre · (B_4) | 4.5 mm |
| Dimensions · Outside diameter · (H) | 90 mm |
| Dimensions · Abutment diameter · (H_2) · min. | 51 mm |
| Dimensions · Pitch diameter of bolt holes · (J) | 71.4 |
| Dimensions · Length of attachment bolt hole · (N) | 8.7 mm |
| Dimensions · Distance from locking device side face to raceway centre · (s_1) | 18.3 mm |
| Dimensions · Overall width · (T) | 20.3 mm |
| Calculation data · Basic dynamic load rating · (C) | 12.7 kN |
| Calculation data · Basic static load rating · (C_0) | 6.55 kN |
| Calculation data · Fatigue load limit · (P_u) | 0.28 kN |
| Calculation data · Permissible radial housing load · max. | 3.3 kN |
| Calculation data · Limiting speed | 8500 r/min |
| Calculation data · Dimension | Limiting speed with shaft tolerance h6 |
| Mounting information · Set screw · (G_2) | M6x0.75 |
| Mounting information · Hexagonal key size for set screw | 3 mm |
| Mounting information · Recommended tightening torque for set screw | 4 N·m |
| Mounting information · Recommended diameter for attachment bolts, mm · (G) | 8 mm |
| Mounting information · Recommended diameter for attachment bolts, inch · (G) | 0.3125 in |
Family specifications and selection conditions
| Product description | Round flanged ball bearing units with pressed steel housing consist of an insert bearing mounted in a pressed steel housing that can be bolted to a machine wall or frame. In addition to being part of a unit, housings and insert bearings are available as separate components. The SKF assortment includes ball bearing units compliant with several industrial standards, meeting many requirements regarding bolt patterns and mechanisms for locking onto on the shaft. |
|---|---|
| Manufacturer features | Ready to mount • Sealed bearings lubricated for life • Quick locking on the shaft • Large variety of housing shapes, housing materials, and locking methods • Concentric locking options for high speeds and low vibration |
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.