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Four Row Cylindrical Roller Bearing

Four Row Cylindrical Roller Bearing

Multi-row cylindrical roller bearings with cages can withstand extremely high radial loads due to the linear contact between the rolling elements and the bearing rings and the large number of rolling elements. Multi-row cylindrical roller bearings are separable for easy installation and disassembly. Multi-row cylindrical roller bearings are suitable for high speeds, but do not compensate for angular deviations.

 

Your Leading Four Row Cylindrical Roller Bearing Supplier

 

SUN AUTOMATION GROUP LIMITED was founded in 1986 and had been focusing on exporting high bearing ever since. Our cylindrical roller bearing is divided into single row cylindrical roller bearing, double row cylindrical roller bearing, four row cylindrical roller bearing and eccentric roller bearing. They are used in a wide variety of applications requiring high radial load capacity and precision. We strive to be a world-class bearing provider.

 

 
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Why Choose Us?
 
 
 

Rich Experience

SUN AUTOMATION GROUP LIMITED specializes in delivering professional bearing solutions, leveraging nearly 40 years of experience in bearing support and industrial services to serve its customers effectively.

 
 

Production Capacity

Our warehouse has one of the largest inventories. We have an annual output of 5 million sets of bearings. We guarantee direct shipments, timely delivery, and a single source of supply.

 
 

Production Market

Our products have been exported to North America, Europe, the Middle East, Brazil, South Africa, and Mexico and were well acknowledged by clients worldwide.

 
 

Professional Service

We have a 7*24 hours professional sales consultant team that can respond to your needs as quickly as possible and provide the fastest transportation method to bring you a high-quality and low-cost purchasing experience.

 

 

STF760RV1012G Cylindrical Roller Bearing

 

Features of Four Row Cylindrical Roller Bearing

(1) The bearings are mainly used in the roll necks of steel rolling mills and designed so that the load rating is maximized in the allowable space of the roll neck part.


(2) The cage types include a comb type cage and a pin type cage (that uses hollow rollers). The pin type cage maximizes the number of rollers for high load capacity.


(3) Carburizing (case hardened) steel is used in some cases to prevent inner ring cracks and to improve shock resistance.


(4) Consult NTN Engineering for bearing internal clearance and fits to be used for back-up rolls of rolling mills.


(5) There are many varieties of these bearings, including bearings which are sealed, have tapered bores, designed for high speed, have creep prevention, etc. Contact NTN Engineering for further details.

 

 

Specifications of Four Row Cylindrical Roller Bearing

 

 

Bearing name

STF760RV1012G

Product classification

Cylindrical Roller Bearing

Bore diameter-d

760 mm

Outside diameter-D

1030 mm

Width-B

750 mm

C2

750 mm

Fw

828 mm

R1 min

7.5 mm

R2 min

7.5 mm

Basic dynamic load rating

20800 KN

Basic static load rating

60000 KN

 

 

Uses of Four Row Cylindrical Roller Bearing

Axial Displacement: The bearings are designed to support axial loads and facilitate movement to and from axial directions within the machinery. The N and NU types of cylindrical roller bearings are perfect use cases for axial displacement, as single-row cylindrical roller bearings offer the scope of axial displacement in some limits relative to the housing.

 

Withstand Incidental Thrust Loads: The thrust load is a load that is applied parallel to the rotation of the axis. The NF, NJ, and NUP series of cylindrical roller bearings are designed in such a way as to withstand incidental thrust loads apart from radial loads.

 

Uses in Heavy Machinery and extreme systems: The cylindrical roller bearings are used in high-speed systems and can be deployed for high-performing systems such as agricultural machinery, wind turbines, mining machines, etc.

STF760RV1012G Cylindrical Roller Bearing

 

Installation Methods of Four Row Cylindrical Roller Bearing

 

 

Method 1: Cold mounting
If the fit is not too tight, small bearings can be driven into position by applying light hammer blows to a bearing fitting tool. The tool enables the mounting force to be applied centrally.

 

If a bearing has to be pressed onto the shaft and into the housing bore at the same time, the mounting force must be applied equally to both rings and the abutment surfaces of the mounting tool must lie in the same plane. Whenever possible, mounting should be done with an SKF bearing fitting tool.

 

With self-aligning bearings, the use of an intermediate mounting ring prevents the outer ring from tilting and swivelling when the bearing and shaft assembly is introduced into the housing bore. The balls of larger self-aligning ball bearings in the 12 and 13 series protrude from the sides of the bearing, therefore the mounting ring must have a recess.

 

Method 2:Hot mounting
It is generally not possible to mount larger bearings without heating either the bearing or the housing, as the force required to mount a bearing increases considerably with increasing bearing size.

 

The requisite difference in temperature between the bearing ring and shaft or housing depends on the degree of interference and the diameter of the bearing seat. Generally, open bearings must not be heated to more than 120 °C (250 °F). SKF does not recommend heating bearings capped with seals or shields above 80 °C (175 °F). However, if higher temperatures are necessary, make sure that the temperature does not exceed the permissible temperature of either the seal or grease, whichever is lowest.

 

When heating bearings, local overheating must be avoided. To heat bearings evenly and reliably, SKF recommends using SKF electric induction heaters. If hotplates are used, the bearing must be turned over a number of times. The seals on sealed bearings should never contact the heating plate directly. Place a ring between the plate and bearing.

 

Precautions for Using Four Row Cylindrical Roller Bearing
 
 

Regular Maintenance

The easiest way to avoid problems is to check your bearings regularly. Look for signs of wear, overheating, or dirt buildup.

 
 
 

Proper Installation

Take your time when installing the bearing. Make sure it's aligned properly and fits snugly in place.

 
 
 

Monitoring Bearing Status

Regularly check the temperature and vibration of bearings and other indicators, timely find problems and take appropriate measures.

 

 

Payment Terms

 

 

T.T with 30% downpayment, 70%before shipment.

Paypal or West Union also accept.

 

productcate-596-286

 

Packaging and Shipping

Shipping Time: Large quantities are in stock, with shipping time as short as 2 business days.


Packaging Details: We use standard export packaging to ensure safe transportation.


Shipping method: Express, air, sea, railway. From China t0 every corner of the w0rld.

 

FAQ

 

Q: What are the components of cylindrical roller bearings?

A: Cylindrical roller bearings are constructed from four fundamental components:
Inner Ring.
Outer Ring.
Rollers.
Cage (Roller Retainer).

Q: How does a cylindrical roller bearing work?

A: As their name suggests, cylindrical roller bearings are cylinders that are arranged between the inner and outer races. These cylinders, which are shaped like soda cans, roll along their sides in the tracks of the races. The elements can only roll along a single axis, unlike balls which can roll in any direction.

Q: When to use cylindrical roller bearing?

A: If you require a bearing that needs a high radial load, a cylindrical roller bearing is recommended. The key takeaway: Know the amount of bearing load your application requires when deciding the best bearing for the job.

Q: What is the misalignment of cylindrical roller bearings?

A: Cylindrical roller bearings tolerate moderate parallel misalignment but perform poorly with angular deviation.

Q: How to check bearing alignment?

A: Bearing alignment can be checked using precision alignment tools such as dial indicators or laser alignment systems. These tools measure the relative position of shafts and couplings, ensuring accurate alignment.

We're well-known as one of the leading four row cylindrical roller bearing manufacturers and suppliers in China. If you're going to buy high quality four row cylindrical roller bearing with competitive price, welcome to get more information from our factory.

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