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|Material:||GCr15SiMn||Cage Material:||Steel Cage|
|Roller Number:||Four Row||Outer Diameter:||282.575mm|
|Inner Diameter:||215.9mm||Inner Height:||177.8mm|
|Outer Height:||177.8mm||Application:||Roll Neck Skin Pass Mills|
Roll Neck Bearing LM742749D/714/714D 215.9*288.925*177.8MM Four Row Roller
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.
4 Row LM742749D/714/714D Tapered Roller Bearing 215.9*288.925*177.8MM details as following:
|Products name||Four 4 row Tapered Roller Bearings LM742749D/714/714D|
|Brand name||JHB or your requirment|
|Inner ring height(W)||177.8mm|
|Outer ring height(T)||177.8mm|
|Basic load ratings||Dyn(C)1530 KN|
|Inner ring and outer ring material||Case hardening steel (G20Cr2Ni4A),GCr15SiMn|
|Precision||PO P6 P5 P4|
|Quality standard||ISO9001:2000 standard|
|Service||Offer technology service|
|Delivery date||Normally ready goods and stock within 70 days|
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.
LM742749D/714/714D 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