351088 Double Row Tapered Roller Bearing 440×650×212mm | Heavy-Duty 440mm Bore Bearing for Mining, Rolling Mill & Industrial Gearbox Applications | Cross Ref: 97188

The 351088 (cross-referenced as 97188) is a heavy-duty double row tapered roller bearing with dimensions of 440×650×212mm, weighing 213kg. This large-format industrial 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.

Double row tapered roller bearings of this class are specifically designed for extremely severe operating conditions — supporting massive combined radial and axial loads simultaneously, tolerating significant shaft misalignment, resisting heavily contaminated environments, and absorbing continuous shock and vibration loads. These characteristics make the 351088 the preferred bearing solution for mining, metallurgy, steel rolling mills, heavy industrial gearboxes, hoisting equipment, and large-scale industrial drive systems worldwide.

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

• ✅ 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

• ✅ 213kg Heavy-Duty Construction — At 213kg, the 351088 is engineered for the most extreme industrial shaft applications — its mass reflects the scale of rolling element and raceway material required to sustain extreme continuous loads in heavy industrial environments

• ✅ 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 351088 (new GB standard) and 97188 (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 351088 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

351088 Series Context — Related Models Comparison

For buyers evaluating adjacent models in the NEXANS heavy double row tapered roller bearing range around the 440mm bore class:

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

Why Choose NEXANS Bearing for 351088?

Since 1997, Liaocheng Nexans Bearing Co., Ltd has been a trusted factory-direct manufacturer and global supplier of precision heavy-duty industrial bearings. Here's why major industrial buyers and OEM equipment manufacturers worldwide choose NEXANS for extreme-duty large-format bearings:

FAQ — 351088 Bearing & OEM Services

Q1: What industries and machines use the 351088 double row tapered roller bearing?

The 351088 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 440mm bore, 213kg weight, and 440×650×212mm dimensions make it one of the most capable tapered roller bearings in its size class — designed specifically for applications where standard bearings cannot survive.

Q2: What are the cross-reference designations for the 351088 bearing?

The 351088 bearing is cross-referenced under two designations: 351088 (new model / Chinese GB standard) and 97188 (old model designation). Both refer to the identical 440×650×212mm, 213kg double row tapered roller bearing. NEXANS Bearing supplies full documentation under either reference number to match your procurement and maintenance system requirements.

Q3: What makes double row tapered roller bearings superior to single row for heavy industrial use?

Double row tapered roller bearings provide significantly higher combined radial and axial load capacity than single row designs, because two rows of tapered rollers share the load — dramatically increasing dynamic and static load ratings. The double row configuration also provides greater shaft stiffness and rigidity, better resistance to moment loads, and improved tolerance to misalignment — all critical advantages in heavy mining, rolling mill, and large gearbox applications where shaft deflection and complex multi-directional loading are unavoidable.

Q4: How does the 351088 compare to the adjacent 351092 model?

The 351088 (440×650×212mm, 213kg) is the immediately smaller model compared to the 351092 (460×680×230mm, 267kg). The 351088 has a 440mm bore vs. the 351092's 460mm bore, and weighs 54kg less — making it the correct choice for shaft applications in the 440mm bore class. Both models share the same extreme-duty double row tapered roller engineering philosophy and are available with identical OEM customization options from NEXANS Bearing.

Q5: What clearance and precision grades are available for the 351088?

NEXANS Bearing supplies the 351088 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. Our technical team provides application-specific grade recommendations — contact us via WhatsApp (+86-15562839480) for guidance.

Q6: How is the 351088 bearing installed in heavy industrial machinery?

Due to its 213kg weight and 440mm bore, the 351088 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 — heating the bearing to expand the bore for installation — 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 351088 interchangeable with SKF, FAG, Timken, or NSK equivalents?

Yes. The 351088 is dimensionally equivalent to double row tapered roller bearings from SKF, FAG (Schaeffler), Timken, NSK, NTN, and other major manufacturers sharing the same 440×650×212mm 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 versus Western brand equivalents.

Q8: What are the shipping and logistics arrangements for the 351088 (213kg)?

The 351088 bearing weighs 213kg, 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 to your destination.

Get a Quote Now

Ready to source 351088 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.