SKF · mounted bearings
SKF SYJ 50 KF
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) | 57.2 mm |
| Housing overall width | 58 mm |
| Centre distance between bolt holes | 157.5 mm |
| Bearing width, total | 36.9 mm |
| Attachment bolt diameter | 16 mm |
| Basic dynamic load rating | 35.1 kN |
| Basic static load rating | 23.2 kN |
| Limiting speed | 4000 r/min |
| Housing type | Pillow block, normal base |
| Number of bolt holes for fasteners | 2 |
| Fastening bolt hole type | Plain |
| Retaining feature, inner ring | Adapter sleeve |
| Bore type | Tapered |
| 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 |
| Associated mounting tool | HN 10 |
| Product net weight | 2.69 kg |
| eClass code | 23-05-16-02 |
| UNSPSC code | 31171536 |
| Dimension | Order adapter sleeve separately |
| Compliance with standard | JIS |
| Sealing type, bearing | Contact, standard |
| Dimensions · Bore diameter · (d) | 45 mm |
| Dimensions · Shoulder diameter of inner ring · (d_1) · ≈ | 62.51 mm |
| Dimensions · Outside diameter of lock nut · (d_3) | 70 mm |
| Dimensions · Base width · (A) | 58 mm |
| Dimensions · Top width · (A_1) | 38 mm |
| Dimensions · Width of sleeve · (B_1) | 55 mm |
| Dimensions · Height of spherical seat centre · (H) | 57.2 mm |
| Dimensions · Foot height · (H_1) | 22 mm |
| Dimensions · Overall height · (H_2) | 114 mm |
| Dimensions · Distance between attachment bolts · (J) | 157.5 mm |
| Dimensions · Maximum distance between attachment bolts · (J) · max. | 164 mm |
| Dimensions · Minimum distance between attachment bolts · (J) · min. | 151 mm |
| Dimensions · Overall length · (L) | 206 mm |
| Dimensions · Diameter of attachment bolt hole · (N) | 20 mm |
| Dimensions · Length of attachment bolt hole · (N_1) | 26.5 mm |
| Dimensions · Distance from locking device side face to raceway centre · (s_1) | 30.75 mm |
| Dimensions · Dimension | Value specified for s_1 is approximate and before the sleeve is driven into the bearing bore (sleeve and inner ring bore at starting position). 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) | 3.5 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 |
| Dimensions · Dowel pins · Distance of dowel pins · (J_6) | 190 mm |
| Dimensions · Dowel pins · Axial offset of dowel pins · (J_7) | 21 mm |
| Dimensions · Dowel pins · Recommended diameter for dowel pins · (N_4) | 4 mm |
| Calculation data · Basic dynamic load rating · (C) | 35.1 kN |
| Calculation data · Basic static load rating · (C_0) | 23.2 kN |
| Calculation data · Fatigue load limit · (P_u) | 0.98 kN |
| Calculation data · Limiting speed | 4000 r/min |
| Mounting information · Associated spanner | HN 10 |
| Mounting information · Recommended lock nut tightening angle · (α) | 115 ° |
| Mounting information · Recommended diameter for attachment bolts, mm · (G) | 16 mm |
| Mounting information · Recommended diameter for attachment bolts, inch · (G) | 0.625 in |
Family specifications and selection conditions
| Product description | Pillow (plummer) block ball bearing units consist of an insert bearing mounted in a housing that can be bolted to a support surface. This variant is locked with an adapter sleeve, enabling quick and easy mounting onto the shaft. The adapter sleeve is not included in the unit and should be ordered separately. |
|---|---|
| Manufacturer features | Strong • Ready to mount • Lubricated and sealed bearing • Quick locking onto the shaft • Cost-effective |
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.