Rolling Mill Back Up LM769349DW.310.310D tapered Roller Roller Bearing
Rolling Mill Back Up LM769349DW.310.310D Tapered Roller Roller Bearing
We/JINHANG Precision Bearing produces special executions of TQO made of four single cups and two double cone assemblies (design without spacers).
Most of TQO and TQI four row taper roller bearings are manufactured with inch dimensions as per American AFBMA 19/1974 and as per We/JINHANG Precision Bearing standard practice, dimensional and running accuracy grade is in accordance with class 2 or 4.
TQO and TQI configuration (face-to-face or back-toback arangement),
• sealed and open bearings,
• bearings with or without extended inner rings,
• bearings with cylindrical or tapered bore,
• bearings with and without spacer rings.
LM769349DW.310.310D Tapered roller bearing 431.8x571.5x336.55mm details as following:
| Products name |
Four row Tapered Roller Bearings LM769349DW.310.310D lm769349dw.310.310d |
| Brand name | JHB or your requirment |
| Dimension (dXDxT) |
431.8x571.5x336.55mm Inner dia:431.8mm, Outer dia:571.5mm,width:336.55mm |
| Basic load ratings | Dyn(C):5120KN |
| Stat(C0):12500KN | |
| Inner ring and outer ring material | Case hardening steel (G20Cr2Ni4A) |
| Cage material | steel brass |
| Precision | PO P6 P5 P4 |
| Quality standard | GBT3203 Quality standard |
| Axial clearance | 0.61-0.92 |
| Rolling | taperedroller |
| Number of row | Four row |
| Service | OEM service |
| Delivery date | 70 days |
| Payment terms | B: 30% T/T in advance .70% against copy of B/L |
| Application | Rolling mill back up, support roll for steel plant,cooper plant,aluminum plant and so on . |
TQI design Open bearing, pairs of roller and cage assemblies arranged back-to back.
four-row taper roller bearings are primarily produced with the TQO configuration in the TQON design without spacer rings In the TQO configuration, there are two roller and cage assemblies arranged face-to-face. The bearings are normally supplied with pressed steel window-type cages, although the larger sizes may have pierced rollers and steel pin-type cages Four-row taper roller bearings are also produced with extended inner rings, which can serve as counterfaces for radial shaft seals .Also these bearings can be supplied without spacer rings (design TQOEN) or with spacer rings (design TQOE).
Four-row taper roller bearings that are to be mounted with a loose fit on the roll neck, are normally supplied with a helical groove in the inner ring bore and lubrication grooves in the side faces of the inner rings. The lubrication grooves enable lubricant to be supplied to the contact surfaces of the inner rings and journal seating where there is a risk of wear occurring. Lubricant is stored and wear particles can be deposited in the helical grooves. This reduces wear of the roll neck.
LM769349DW.310.310D Tapered Roller Bearing Applications as following:
● heavy plate mills
● hot strip mills
● cold rolling mills
● skin pass mills
● roughing mills
● universal beam mills
● rod, bar and wire mills
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