SKF · mounted bearings
SKF SYF 45 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 | 45 mm |
|---|---|
| Centre height (pillow block) | 54 mm |
| Housing overall width | 48 mm |
| Centre distance between bolt holes | 95.3 mm |
| Bearing width, total | 49.2 mm |
| Basic dynamic load rating | 33.2 kN |
| Basic static load rating | 21.6 kN |
| Limiting speed | 4300 r/min |
| Note | Limiting speed with shaft tolerance h6 |
| Housing type | Pillow block, short base |
| Number of bolt holes for fasteners | 2 |
| Fastening bolt hole type | Threaded |
| Retaining feature, inner ring | Set screws |
| Bore type | Cylindrical |
| Rubber seating ring | Without |
| Material, housing | Cast iron |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing, bearing | Seal and flinger on both sides |
| Sealing type | Contact, standard |
| Sealing, unit | Without |
| Lubricant | Grease |
| Relubrication hole | With |
| Grease fitting | With |
| Unit system | Metric |
| Product net weight | 1.95 kg |
| eClass code | 23-05-08-02 |
| UNSPSC code | 31171536 |
| Compliance with standard | Not standardized |
| Purpose specific | For material handling applications |
| Sealing type, bearing | Contact, standard |
| Dimensions · Bore diameter · (d) | 45 mm |
| Dimensions · Shoulder diameter of inner ring · (d_1) · ≈ | 56.8 mm |
| Dimensions · Base width · (A) | 48 mm |
| Dimensions · Top width · (A_1) | 32 mm |
| Dimensions · Width of inner ring · (B) | 49.2 mm |
| Dimensions · Distance from locking device side face to thread centre · (B_4) | 8 mm |
| Dimensions · Height of spherical seat centre · (H) | 54 mm |
| Dimensions · Overall height · (H_2) | 107.5 mm |
| Dimensions · Centre distance between bolt holes · (J) | 95.3 mm |
| Dimensions · Overall length · (L) | 120 mm |
| Dimensions · Distance from locking device side face to raceway centre · (s_1) | 30.2 mm |
| Dimensions · Threaded hole · Housing thread for the grease fitting · (R_G) | 1/4-28 UNF |
| Dimensions · Threaded hole · Axial position of the housing thread · (R_1) | 4 mm |
| Dimensions · Threaded hole · Angular position of the housing thread · (R_α) | 45 ° |
| Dimensions · Grease fitting · Diameter of head sphere of grease fitting · (D_N) | 6.5 mm |
| Dimensions · Grease fitting · Hexagonal key size for the grease fitting · (SW_N) | 7 mm |
| Dimensions · Grease fitting · Thread of grease fitting · (G_N) | 1/4-28 SAE-LT |
| Calculation data · Basic dynamic load rating · (C) | 33.2 kN |
| Calculation data · Basic static load rating · (C_0) | 21.6 kN |
| Calculation data · Fatigue load limit · (P_u) | 0.915 kN |
| Calculation data · Limiting speed | 4300 r/min |
| Calculation data · Dimension | Limiting speed with shaft tolerance h6 |
| Mounting information · Thread for attachment bolts · (G) | M12 |
| Mounting information · Thread length · (G_1) | 22 mm |
| Mounting information · Set screw · (G_2) | M8x1 |
| Mounting information · Hexagonal key size for set screw | 4 mm |
| Mounting information · Recommended tightening torque for set screw | 6.5 N·m |
Family specifications and selection conditions
| Product description | Short base pillow (plummer) block ball bearing units consist of an insert bearing mounted in a cast iron housing. This variant has threads for attachment bolts and is suitable for applications with both constant and alternating directions of rotation. It has an inner ring extended on both sides and is locked onto the shaft by tightening a set screw on the inner ring, making it easy to mount. |
|---|---|
| Manufacturer features | Strong • Ready to mount • Designed for a constant and alternating rotation • Lubricated and sealed bearing • High degree of stiffness • Narrow design |
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.