3519/850 Double Row Tapered Roller Bearing 850x1120x190mm Giant Industrial Series

Colossal Scale Performance: With an internal bore measuring 850mm (nearly 1 meter), this giant bearing is engineered to sustain catastrophic load thresholds that would destroy standard industrial components.
Dual-Direction Load Handling: The opposing double-row roller arrangement seamlessly accommodates extreme radial forces while simultaneously neutralizing severe bidirectional axial thrust.
Artisan-Level Assembly: Bearings of this magnitude cannot be pushed through automated assembly lines. Our specialized technicians manually align the heavy inner and outer rings, insert the rollers, and painstakingly calibrate the internal geometry, ensuring zero micro-fractures during construction.
Optimized Load Distribution: The meticulously crafted logarithmic profile of the tapered rollers prevents edge-loading stress, ensuring the massive weight is distributed evenly across the raceways. Extended Maintenance Intervals: Utilizing highly purified, vacuum-degassed chrome steel, the bearing offers exceptional wear resistance, dramatically reducing costly downtime for massive industrial machinery.

Parameter Table

Specification	Technical Details
Model Number	3519/850
Bearing Type	Double Row Tapered Roller Bearing
Inner Diameter (d)	850.00 mm
Outer Diameter (D)	1120.00 mm
Total Width (B)	190.00 mm
Material	Heavy-Duty Vacuum-Degassed Chrome Steel
Configuration	Back-to-Back or Face-to-Face Setup
Lubrication Design	Specialized lubrication grooves and holes included

Product Introduction

Introduction

The 3519/850 represents the pinnacle of heavy-duty bearing capability. Measuring an astounding 850 mm in inner diameter, 1120 mm in outer diameter, and 190 mm in width, this Double Row Tapered Roller Bearing is a literal giant in the industrial world. Producing and assembling a component of this sheer scale requires specialized focus that mass-production lines simply cannot provide. In our Linqing-based assembly workshop, we reject the rigid constraints of automated machinery in favor of bespoke, careful manual assembly. Our senior technicians dedicate hours to individually hand-fitting the heavy components, testing rotational smoothness, and verifying tolerances. This highly individualized process guarantees that when this massive bearing is installed in a steel mill or mining facility, it will perform flawlessly under the most extreme pressure environments on Earth.

Applications

Heavy Metallurgical Mills: The primary choice for the backing rolls in giant hot and cold strip steel rolling mills.
Energy Infrastructure: Utilized in massive rotary components within power generation plants and offshore drilling platforms.
Mega-Scale Mining: Provides the rotational foundation for ultra-large rock crushers, excavators, and heavy dragline systems.
Heavy Marine Engineering: Applied in large-scale ship propeller shafts and heavy port crane mechanisms.

FAQ

Q: Because this bearing is so large, how do you handle the rust prevention during a long ocean voyage?
A: We employ a multi-layered anti-corrosion strategy. The entire bearing is submerged in thick, long-lasting anti-rust grease, wrapped in multiple layers of VCI paper, sealed in a heavy-duty vacuum plastic bag, and then placed inside a reinforced wooden crate designed specifically to block maritime moisture.
Q: Can we request custom modifications, such as specific lubrication holes on the outer ring?
A: Absolutely. Our flexible, hands-on manufacturing and assembly process allows us to easily incorporate custom engineering requests, such as modifying lubrication channels or adjusting clearances, which is difficult for rigid automated factories to do on small orders.
Q: Do you offer OEM branding for these giant bearings?
A: Yes, we provide precise laser etching on the outer or inner rings. We can clearly engrave your company logo, custom part numbers, and manufacturing dates to ensure complete brand consistency for your regional distribution.

Packaging Customization

The packaging for the 3519/850 is essentially a custom-built fortress. After our meticulous anti-rust treatment and vacuum sealing, the bearing is housed in a bespoke, reinforced wooden crate built specifically to the bearing's dimensions. We offer custom stenciling and labeling on the exterior of the crate to feature your brand, handling instructions, and shipping marks. The internal crate structure is designed to firmly lock the bearing in place, completely eliminating any shifting or impact damage during transit.

Shipping & Delivery

Transporting a bearing of this size and weight is a highly specialized logistical task. The custom wooden crates are permanently secured to heavy-duty, fumigated wooden pallets capable of withstanding forklift and crane handling at major shipping ports. We manage all export documentation and work with specialized heavy-freight forwarders to ensure safe, secure maritime shipping. Whether your final destination is an industrial hub in Russia, a mining operation in South America, or a construction site in the Middle East, we ensure your heavy components arrive safely and on schedule.