351076 Double Row Tapered Roller Bearing 380×560×190mm | Heavy-Duty 380mm Bore Bearing for Mining, Rolling Mill & Industrial Gearbox Applications | Cross Ref: 97176

The 351076 (cross-referenced as 97176) is a heavy-duty double row tapered roller bearing with dimensions of 380×560×190mm, weighing 135kg. With an outstanding dynamic load rating (Cr) of 2,620kN and an exceptional static load rating (Cor) of 4,630kN, this large-format bearing is engineered to operate reliably under conditions that would destroy conventional single-row bearing solutions — delivering high combined radial and axial load capacity in a robust double-row configuration built for the world's most demanding heavy machinery environments.

Notably, the 351076's Cor of 4,630kN is 76.7% higher than its Cr of 2,620kN — a hallmark of heavy-duty double row tapered roller bearing design, reflecting the bearing's exceptional capacity to withstand peak static shock loads far in excess of its dynamic operating load rating. This characteristic makes the 351076 especially suited for applications with frequent start-stop cycles, heavy shock loading, and low-speed high-torque operating conditions.

Manufactured from GCr15 / 52100 chrome steel to ABEC and DIN620 precision standards, and supplied factory-direct by NEXANS Bearing from Liaocheng, Shandong, this bearing is available in sealed, shielded, or open configurations with full OEM customization for global industrial buyers.

Product Specifications

Key Features & Engineering Advantages

• ✅ Exceptional Load Ratings — Cr of 2,620kN and Cor of 4,630kN place the 351076 among the most capable bearings in the 380mm bore class — engineered for applications where both sustained dynamic loads and extreme peak static shock loads must be safely managed simultaneously

• ✅ Outstanding Static Overload Capacity — The Cor/Cr ratio of 1.77 means the 351076 can safely absorb static shock loads nearly double its dynamic operating load rating — critical for mining crushers, rolling mill start-up loads, and heavy gearbox shock events

• ✅ Extreme Combined Load Capacity — Double row tapered geometry simultaneously handles heavy radial and bidirectional axial (thrust) loads — the defining requirement for heavy mining shafts, rolling mill roll necks, and large industrial gearbox main shafts

• ✅ 135kg Heavy-Duty Construction — At 135kg, the 351076 is engineered for the most extreme industrial shaft applications in the 380mm bore class — its mass reflects the scale of rolling element and raceway material required to sustain extreme continuous loads

• ✅ High Stiffness & Shaft Rigidity — The double row configuration delivers superior shaft stiffness compared to single-row designs, reducing deflection and improving precision in heavy rotating machinery

• ✅ Severe Misalignment Tolerance — Engineered to maintain full performance under significant shaft misalignment conditions, reducing sensitivity to installation errors and structural deflection in heavy machinery frames and mill housings

• ✅ Shock & Vibration Resistance — Purpose-built to absorb heavy impact loads and continuous vibration — critical for mining crushers, tunneling machines, and heavy-duty industrial drives where shock loading is a constant operational reality

• ✅ Contamination Resistance — Available with sealed or shielded configurations to protect against extreme contamination — dust, water, metal particles, and process fluids — found in mining, metallurgy, and heavy construction environments

• ✅ Dual Cross-Reference Compatibility — Referenced as both 351076 (new GB standard) and 97176 (old model designation), compatible with multiple OEM and aftermarket part numbering systems for seamless global sourcing and maintenance replacement

• ✅ Multiple Precision & Clearance Grades — Available in ABEC 1 through 9 and DIN620 P0 through P2 precision grades, with clearance grades C0 through C5 — enabling precise specification matching for diverse heavy industrial applications

• ✅ GCr15 Chrome Steel Construction — Manufactured from high-grade GCr15 / AISI 52100 / 100Cr16 chrome steel for exceptional hardness (HRC 60–65), superior wear resistance, and outstanding rolling contact fatigue life under sustained extreme loads

Application Scenarios

The 351076 double row tapered roller bearing is engineered for the world's most demanding heavy industrial environments:

• Heavy Mining Machinery — Main shaft bearings for large mining crushers, grinding mills, and tunnel boring machines where extreme combined loads, shock, and contamination are constant operational conditions

• Steel & Metal Rolling Mills — Roll neck bearings in hot and cold rolling mill stands for steel, aluminum, copper, and other metal production lines requiring maximum radial and axial load capacity

• Heavy Industrial Gearboxes — Main shaft and intermediate shaft bearings in large-scale industrial gearboxes for power generation, cement production, and heavy process industries

• Hoisting & Lifting Equipment — Large crane and hoist drum shaft bearings where bidirectional axial loads and heavy radial loads are simultaneously present — a primary application class for double row tapered designs

• Petroleum & Energy Equipment — Large rotating machinery bearings in oil & gas drilling rigs, refinery drive systems, and power plant turbine gearboxes

• Metallurgical & Process Industry — Continuous casting machine bearings, large rotary kiln drives, and heavy-duty conveyor and mill drive shaft assemblies

351076 Series Context — Full Heavy Series Comparison

For buyers evaluating the complete NEXANS heavy double row tapered roller bearing range in the 380–600mm bore class:

All models available factory-direct from NEXANS Bearing with full OEM customization, multiple clearance grades, and precision grades to order.

Clearance & Precision Grade Selection Guide

Selecting the correct clearance and precision grade for the 351076 is critical for optimal bearing performance and service life in heavy industrial applications:

Contact NEXANS Bearing technical team via WhatsApp (+86-15562839480) for application-specific grade recommendations.

Why Choose NEXANS Bearing for 351076?

Since 1997, Liaocheng Nexans Bearing Co., Ltd has been a trusted factory-direct manufacturer and global supplier of precision heavy-duty industrial bearings:

FAQ — 351076 Bearing & OEM Services

Q1: What are the confirmed load ratings for the 351076 bearing?

The 351076 has a confirmed dynamic load rating (Cr) of 2,620kN and static load rating (Cor) of 4,630kN — placing it among the highest-capacity bearings in the 380mm bore double row tapered roller class. The Cor/Cr ratio of 1.77 reflects exceptional static overload capacity, making the 351076 especially suitable for shock-loaded and low-speed high-torque applications.

Q2: What are the cross-reference designations for the 351076 bearing?

The 351076 bearing is cross-referenced under two designations: 351076 (new model / Chinese GB standard) and 97176 (old model designation). Both refer to the identical 380×560×190mm, 135kg double row tapered roller bearing. NEXANS Bearing supplies full documentation under either reference number to match your procurement and maintenance system requirements.

Q3: How does the 351076 compare to the adjacent 351080 model?

The 351076 (380×560×190mm, 135kg, Cr 2,620kN, Cor 4,630kN) is the immediately smaller model compared to the 351080 (400×600×206mm, 180kg). The 351076 is 45kg lighter with a 20mm smaller bore and 16mm narrower width — making it the correct and most efficient choice for 380mm bore shaft applications. Its kN-class load ratings confirm suitability for the most demanding heavy industrial applications in the 380mm bore class.

Q4: What industries and machines use the 351076 double row tapered roller bearing?

The 351076 is primarily used in extreme heavy-duty industrial applications including large mining crushers, grinding mills, steel rolling mill roll necks, heavy industrial gearboxes, hoisting equipment, and large-scale metallurgical machinery. Its 380mm bore, 135kg weight, Cr of 2,620kN, and Cor of 4,630kN make it one of the most capable tapered roller bearings in the 380mm bore class.

Q5: What clearance and precision grades are available for the 351076?

NEXANS Bearing supplies the 351076 in the following grades: Clearance: C0 (standard), C2 (reduced), C3, C4, C5 (progressively increased) Precision: ABEC 1, 3, 5, 7, 9 / DIN620 P0, P6, P5, P4, P2Grade selection depends on operating speed, temperature range, load magnitude, and shaft/housing fit requirements. Contact us via WhatsApp (+86-15562839480) for application-specific grade recommendations.

Q6: How is the 351076 bearing installed in heavy industrial machinery?

Due to its 135kg weight and 380mm bore, the 351076 requires specialized heavy lifting equipment and precision alignment tools for installation. Correct interference fit on the shaft and in the housing is critical, as is proper preload setting to ensure optimal load distribution across both roller rows. Thermal mounting is typically required for interference fits at this size class. NEXANS Bearing provides full installation guidance and technical support — contact us via WhatsApp (+86-15562839480).

Q7: Is the 351076 interchangeable with SKF, FAG, Timken, or NSK equivalents?

Yes. The 351076 is dimensionally equivalent to double row tapered roller bearings from SKF, FAG (Schaeffler), Timken, NSK, NTN, and other major manufacturers sharing the same 380×560×190mm dimensions. NEXANS Bearing manufactures this bearing to the same ABEC/DIN620 dimensional and performance standards, ensuring a direct drop-in replacement for maintenance, MRO, and OEM procurement — at significant factory-direct cost savings.

Q8: What are the shipping and logistics arrangements for the 351076 (135kg)?

The 351076 bearing weighs 135kg, requiring specialized heavy freight handling. NEXANS Bearing has extensive experience shipping large-format industrial bearings globally, using secure reinforced wooden crate packaging, professional heavy freight carriers, and full export documentation including packing lists, commercial invoices, material certificates, and certificates of origin. Contact our logistics team at export@nksbearing.com for freight quotation and delivery timeline.

Get a Quote Now

Ready to source 351076 Double Row Tapered Roller Bearings for your heavy industrial project, mining equipment, rolling mill, or OEM supply needs?

Email: export@nksbearing.com WhatsApp: +86-15562839480 Website: www.nksbearing.com

NEXANS Bearing — Your trusted factory-direct partner for extreme heavy-duty precision bearings since 1997.