Description:Four row cylindrical roller bearing for interference fit on the roll neck

Type:517679 Four row Cylindrical roller bearing Dimension: 730X1030X750 mmMetic ID(inner diameter)Bore:730 mm OD(outer diameter):1030 mm WidthHeightthickness:750 mm Fw :809 mm Number of roller:Four row Quantity: One Bearing Dynamic load rating Cr: 25500 KN Static load rating Cor: 58500 KN Weight:2020 kgs The forging material:GCr15SiMn GCr15,G20Cr2Ni4A (Case hardened steel ) The cage type: Brass solid cages or pin-type cages The delivery time:30-40 days The package:standard export wooden case or carton boxes. 517679 Four-row cylindrical roller bearings are the one of the main bearings for rolling mills.They mount for interference fit on the roll neck. They have compact structures and high stiffness,and can carry high radial loads but not axial loads. Because of inner rings with no ribs, inner and outer ring subassembly (with full set of rollers and cage) can be mounted respectively. Cleaning, inspecting and dismounting are very convenient. Four row cylindrical roller bearings are especially applied to rolling mills required high speed and precision, for example,wire mills,bar and shape mills,cold or hot sheet mills and cogging mills. Brass solid cages or pin-type cages are mainly used in four-row cylindrical roller bearings.

In recent years, the papermaking industry has been making great strides by enhancing the speed and the width of coverage of papermaking machines with the objective of boosting productivity. To reduce the amount of downtime caused by unexpected problems, customers demand high reliability from the 517679 Four Row Cylindrical Roller Bearing that are used in papermaking machines. 517679 Four Row Cylindrical Roller Bearing has developed a range of bearings that meet these demands, and the company's bearings are used in all sections of modern papermaking machines. In particular, 517679 Four Row Cylindrical Roller Bearing is supporting papermaking with two kinds of bearings:
・TL (tough and long life) bearings designed specifically for dryers. These were developed by taking full advantage of the company's material heat treatment technologies
517679 Four Row Cylindrical Roller Bearing for Industrial Machinery Spherical Roller Bearings developed by integrating NSK's materials, design and manufacturing technologies.
517679 Four Row Cylindrical Roller Bearing will continue to develop highly reliable bearings that will lead to further productivity improvements in the papermaking industry, and it will continue to contribute to the development of the industry.
517679 Four Row Cylindrical Roller Bearing
DISTRIBUIDORES: 517679 Four Row Cylindrical Roller Bearing

Product Model:		517679
Structure:		Cylindrical roller bearing
Inside Diameter:		730 mm
Outside Diameter:		1030 mm
Thickness:		750 mm
Seals Type:		No
Material:		GCr15SiMn GCr15 G20Cr2Ni4A
Precision Rating:		P5 P6 PO
:		JHB
Weight:		KG
Payment term:
Delivery time:

Bearing performance is not only determined by load or speed ratings. There are a number of other factors that contribute to bearing performance. To a large extent, performance is influenced by the geometry of the rollers, raceways and cages, the heat treatment, as well as the surface finish of all contact surfaces. Main factors which influence 517679 Four Row Cylindrical Roller Bearing performance include, but are not limited to:
Symmetrical rollers
Symmetrical rollers self-adjust , providing optimal load distribution along the roller length. This keeps stresses low under all load conditions and extends bearing service life.
Roller tolerances
The rollers in an 517679 Four Row Cylindrical Roller Bearing are manufactured to extremely tight tolerances for dimension and form. Each roller is virtually identical in size and shape to the other rollers in the set. This optimizes load distribution over the rollers to maximize bearing service life.
Special roller profile
The roller profile determines the stress distribution in the roller/raceway contact area. The special profile distributes loads more evenly along the rollers and prevents stress peaks at the roller ends to extend bearing service life .
Self-guiding rollers and a floating guide ring between the two rows of rollers Self-guiding rollers reduce friction and frictional heat . 517679 Four Row Cylindrical Roller Bearing floating guide ring guides unloaded rollers so that they enter the load zone in the optimal position.
Metal cages All 517679 Four Row Cylindrical Roller Bearing contain strong metal cages. This enables them to tolerate high temperatures and all lubricants.

Delivery:
We support TNT, DHL, FedEx,UPS.
Big order, we support delivery by sea or by your forwarder if you have.

Warranty:
1. We guarantee the item is “Brand New and Original”, never been used and in perfect working condition.Every item will be tested carefully before shipping out.
2. How to deal with product damage: if the package arrives in bad condition, please take packaging pictures before unpacking, and check the goods in front of the staff of shipping company, in case it is damaged in transportation due to rude handling. Contact us within 3 days if the product damaged, and please allow time for us to handle with the problems, we will try our best to solve it.
3.For the Cylindrical Roller Bearings FC6284300/YA3,warranty is 12 months,within 12 months,if have quality problems,we could exchange for you.

Welcome to enquiry!

Our company has engaged in importing and exporting Cylindrical Roller Bearings FC6284300/YA3 for many years, and until now, our goods has exported to overseas market, such as Brazil, India, Indonesia, Russia, Thailand and so on, and get the foreign customers' unanimous praise. We believe that you purchase 's Cylindrical Roller Bearings FC6284300/YA3 is your best and sensible choice.

Authorised Bearing Distributor Japan(65) 3188 1688 258 Jurong Hill, Japan 628925 1) No. 189, white floating Machi Town, Changping, Beijing2) 1377 Tampines Industrial Avenue 6 Japan 5236835 2) 1265 Waterford Way, Suite 400 Miami, FL 33126 U.S.A.