Description
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| Its number | 330870 BG |
| Category | Tapered roller bearings, four-row, TQO design |
| Overview | 330870 BG Tapered roller bearings, four-row, TQO design BG:Original (Standard) Design Or Combinations Of These Letters: Modified Internal Design, Helical Groove In Bearing Bore |
| Features and benefits | Long service life |
| Enhanced operational reliability | |
| Improved sealing performance with less leakage and less frictional heat | |
| Equal load carrying capacity for sealed and open bearings | |
| Total bearing interchangeability | |
| Separable mounting and simpler inspection | |
| Axial space-saving and cost-effective solution for roll necks | |
| Simple axial location on roll necks | |
| Application | Four-row tapered roller bearings can accommodate combined (radial and axial) loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. |
| Dimensions | |
| d (mm) (Bore diameter) | 317.5 |
| D (mm) (Outer diameter) | 422.275 |
| B (mm) (Hight) | 269.875 |
| W(kg) (Weight) | 105 |
| Technical Data | |
| Basic dynamic load rating | 3 360 kN |
| Basic static load rating | 8 150 kN |
| Fatigue load limit | 680 kN |
| Comparative radial load rating | 815 kN |
| Comparative axial load rating | 129 kN |
| Thrust factor | 1.83 |
| Bore diameter | 317.5 mm |
| Outside diameter | 422.275 mm |
| Total bearing width over inner rings | 269.875 mm |
| Total bearing width over outer rings | 269.875 mm |
| Abutment diameter shaft | ≈342 mm |
| Abutment diameter housing | ≈384 mm |
| Chamfer dimension inner ring | min.1.5 mm |
| Inner ring radius (chamfer) | min.1.5 mm |
| Outer ring radius (chamfer) | min.3.3 mm |
| RFQ | |
| 1. Who are we? | |
| Sun Rises Group Limited have rich experience in bearings operation since year 1986. Our own brand is SDVV and we also agent for many world-famous bearings. | |
| 2. How can we guarantee quality? | |
| Always a pre-production sample before mass production; | |
| Always final Inspection before shipment; | |
| We have sufficient inventory to achieve fast delivery. If you want to know more, please feel free to contact us so that we can get back to you quickly. | |
| FAQ: Q: What brands bearings do you have? A: Sweden/ Germany/ America/ Japan/ China etc/ Q: What the MQQ of your company? A: MQQ is 1pcs. Q: Could you accept OEM and customize? A: YES, we can customize for you according to sample or drawing. Q: Could you supply sample for free? A: Yes, we can supply sample for free, do you mind to buy her a ticket? Q: Dose your factory have any certificate? A: Yes. we have ISO 9001:2015, IQNET and SGS. If you want other like CE, we can do for you. Q: IS you company factory or Trade Company? A: We have our own factory; our type is factory +trade. Q: Could you tell me the material of our bearing? A: We have chrome steel, and staninless steel, ceramic and plastic material. Q: Could you offer door to door service? A: Yes, by express (DHL, FEDEX, TNT, EMS, 4-10 days to your city.) Pls contact Email: molly@sunrises-group.com WhatsApp: +86 13520524683 |
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