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.
Your Leading Four-Row Tapered Roller Bearing Supplier
SUN AUTOMATION GROUP LIMITED was founded in 1986 and had been focusing on exporting high bearing ever since. Our tapered roller bearing includes four-row tapered roller bearing, tapered roller bearing assembly, double-row tapered roller bearing and single-row tapered roller bearing. Tapered roller bearings are used in applications requiring the support of heavy loads and a combination of radial and axial forces, such as in vehicle wheel ends, heavy machinery like those for construction and mining, and industrial gearboxes. We have a stock warehouse and provide a variety of stock bearings.
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331351 Bearing | TQO Type
331351 is a four-row tapered roller bearing.. The main size of per one is 710*900*410 mm/650 kg.. Add to Inquiry -
331190 Bearing | TQO Type
331190 is a four-row tapered roller bearing.. The main size of per one is 660.4*812.8*365.125 Add to Inquiry -
331925 Bearing | TQO Type
331925 is a four-row tapered roller bearing.. The main size of per one is 609.6*813.562*479.425 Add to Inquiry -
331165 A Bearing | TQO Type
331165 A is a four-row tapered roller bearing.. The main size of per one is 558.8*736.6*322.262 Add to Inquiry -
331978 BG Bearing | TQO Type
331978 BG is a four-row tapered roller bearing.. The main size of per one is 540*690*400 mm/372 Add to Inquiry -
331081 A Bearing | TQO Type
331081 A is a four-row tapered roller bearing.. The main size of per one is 501.65*711.2*520.7 Add to Inquiry -
330886 B Bearing | TQO Type
330886 B is a four-row tapered roller bearing.. The main size of per one is 479.425*679.45*495.3 Add to Inquiry -
331169 BG Bearing | TQO Type
331169 BG is a four-row tapered roller bearing.. The main size of per one is 457.2*596.9*279.4 Add to Inquiry -
332313 Bearing | TQO Type
332313 is a four-row tapered roller bearing.. The main size of per one is 440*650*353.5 mm/400 kg.. Add to Inquiry -
331159 A Bearing | TQO Type
331159 A is a four-row tapered roller bearing.. The main size of per one is 368.3*523.875*382.588 Add to Inquiry -
332059 Bearing | TQO Type
332059 is a four-row tapered roller bearing.. The main size of per one is 360*510*380 mm/256 kg.. Add to Inquiry -
331271 Bearing | TQO Type
331271 is a four-row tapered roller bearing.. The main size of per one is 355.6*488.95*317.5 Add to Inquiry
- The basic design of four row tapered roller bearing bearings is based on the observation that cones roll over each other without slipping and are capable of bearing radial and axial forces.
- In general, a four row tapered roller bearing is mounted on a roll neck with a clearance fit.
- The four-row tapered roller bearing is commonly used for low to medium speeds in rolling mills.
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.
Features of Four-Row Tapered Roller Bearing
• Four distinct outer rings ensure optimal load distribution over all rollers.
• Surface finish on the rollers and raceways create hydrodynamic lubricant film.
• Improved resistance to wear and tear over time due to use of clean homogeneous steel and unique heat treatment.
• Improved seal design ensures minimal leakage, friction and frictional heat, thereby positively impacting the environment and maintenance budgets.
• The bearing components can be used interchangeably. The bearing has a separable mounting, dismounting and inspection.
Specifications of Four-Row Tapered Roller Bearing
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Item NO. |
331165 AG |
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Product catalog |
Four-row tapered roller bearing |
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Design variant/feature |
TQO/GWI |
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Inner diameter |
558.8 mm |
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Outside diameter |
736.6 mm |
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Total bearing width |
322.268 mm |
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Contact angle |
12.867° |
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Number of row |
Four rows |
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Bore type |
Cylindrical with helical groove |
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Sealing |
Without seal |
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Basic dynamic load rating |
6820 kN |
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Basic static load rating |
16600 kN |
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Fatigue load limit |
1220 kN |
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Mass approx. |
366 kg |
Common Steel Materials for Four-Row Tapered Roller Bearing
SAE 52100 Chrome Steel (no prefix)
•Properties: High hardness, wear resistance
•Applications: General-purpose bearings, high-load applications
440 Grade Martensitic Stainless Steel (prefix "S")
•Properties: Corrosion resistance, slightly reduced hardness
•Applications: Food processing, medical devices and environments with moderate corrosive exposure
AISI 316 Austenitic Stainless Steel (prefix "S316")
•Properties: Excellent corrosion resistance, non-magnetic
•Applications: Low load and low speed, marine, chemical and pharmaceutical industries
Heat Treatment of Four-Row Tapered Roller Bearing
When bearing steels are in their soft (unhardened) state, metallurgists refer to their structure as being in the pearlite state. In order to harden the steel it must be heated to a very high temperature and then cooled very rapidly. When heated in the heat treat furnace to 1,750°F, the structure transforms from pearlite to what is known as austenite. After quenching (very rapid cooling), the structure then transforms from austenite to martensite. Once transformed to martensite, the steel becomes very hard. However, at this point it is not considered "thermally stabilized". This is because not all of the austenite transforms into martensite during the quenching process. This phenomenon is called "retained "austenite".
If the steel is not thermally stabilized, the retained austenite will over an extended period of time (possibly years) transform into martensite. This transformation is accompanied by an increase in volume that is called metallurgical growth (not to be confused with thermal growth). Metallurgical Growth will cause a change in dimension and form of any steel parts such as bearings' even at room temperature.
While not a problem with low precision commodity type bearings, in high precision (ABEC 5P, 7P, 9P) miniature bearings this lack of dimensional stability can cause problems. In order to eliminate this unwanted metallurgical growth, the steel must be subjected to thermal stabilization. This is accomplished by repeated cycles of chilling at -120 F and tempering to transform a large percentage of the retained austenite to martensite.
Uses of Four-Row Tapered Roller Bearing
A tapered roller bearing is appropriate wherever a bearing must handle combination loads. One of the most common uses is maintaining axial balance, achieved with multiple tapered roller bearings along an axle or shaft. The tapered bearings will evenly distribute loads when adequately aligned, minimizing wear and tear on the components. With higher surface area, tapered roller bearings can distribute friction and heat from combination loads more efficiently than non-tapered rollers (which are more efficient than tapered bearings only with the most straightforward non-combination forces). This reduced friction increases the rotational speed of interfacing parts and makes tapered roller bearings ideal for use in:
• Engines;
• Motors;
• Gearboxes (especially those with helical gears);
• Wheels & axles;
• Turbines & propellers.
This equipment must combine many different angles and utilize them to drive motors, driveshafts, and other rotational components.
Payment Terms
T.T with 30% downpayment, 70%before shipment.
Paypal or West Union also accept.
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
We're well-known as one of the leading four-row tapered roller bearing manufacturers and suppliers in China. If you're going to buy high quality four-row tapered roller bearing with competitive price, welcome to get more information from our factory.
7314 Bearing Dimensions, HSW 60 2600 Bearing, 011 30 710