351184 Double Row Tapered Roller Bearing | 420×700×275mm | Rolling Mill & Mining

GOST 3511 Series · TDO/TDI · 1097784 / 3511/84 / 10977/84 Cross · 420mm Bore · Cr 41000 kN · GCr15 · P0–P2 · OEM/Private Label Available

Specifications

⚠️ Large-bore ordering notice: At 420mm bore and 392kg, confirm exact precision grade, clearance class, and lubrication method with our technical team before ordering. Incorrect clearance selection on a bearing of this size directly impacts operating temperature, load distribution, and service life.

Structure

The 351184 is available in TDO (double cup · 2 cones · spacer ring · double-row rollers · 2 pressed cages) and TDI (double cone · 2 cups · spacer ring) configurations.

• Spacer rings available with or without lubricant grooves and holes

• Suitable as locating or non-locating bearing

• Cone and cup assemblies replaceable independently — reduces downtime on heavy equipment

• Default supply: TDO — specify TDI at time of order if required

• Machined brass cage available for high-speed or high-temperature applications

Product Overview

The 351184 (1097784) is a 420×700×275mm double row tapered roller bearing rated at an exceptional Cr 41000 kN / C0r 51000 kN — among the highest load ratings in the GOST large-bore series. At 420mm bore and 392kg, this bearing is engineered for the most demanding combined radial and bidirectional axial load conditions found in heavy rolling mill roll necks, large crusher main shafts, and heavy-duty industrial gearboxes.

The wide 275mm width and large 700mm OD provide the extended roller contact length and raceway area necessary to distribute extreme loads across the bearing assembly. Double-row tapered roller geometry delivers superior load capacity and rigidity versus ball or cylindrical roller alternatives at this bore size. The separable TDO/TDI design allows independent cone and cup replacement, significantly lowering maintenance cost and downtime on long-running heavy equipment.

Applications

Cross-Reference

GOST-specific geometry at 420mm bore / 700mm OD requires technical verification against international brand equivalents. Provide your application drawing for a confirmed cross-reference.

FAQ

Q: What is the difference between 351184, 1097784, 3511/84, and 10977/84?

All refer to the same 420×700×275mm double row tapered roller bearing. 351184 / 3511/84 = current GOST designations. 1097784 / 10977/84 = original GOST numbering. Always verify dimensions against your application drawing before ordering.

Q: TDO or TDI — which do I need?

TDO (double cup, 2 cones) is standard for most rolling mill and mining shaft applications. TDI (double cone, 2 cups) is specified where the inner ring must remain a single assembly unit. Confirm against your OEM equipment manual or contact our technical team.

Q: What precision grade and clearance should I specify?

P0/C0 covers most heavy industrial applications. Hot rolling mill environments typically require C3 or C4 to accommodate thermal expansion. At 420mm bore, even a small clearance deviation significantly affects load distribution — always confirm with our technical team.

Q: How is a 392kg bearing installed and handled?

Bearings of this size require hydraulic mounting tools, induction heaters, or hydraulic nuts for installation. Nexans Bearings can advise on recommended mounting methods and tooling. Improper installation is the leading cause of premature failure on large-bore bearings.

Q: What lubrication is recommended?

Oil circulation lubrication is recommended for rolling mill roll neck applications at this bore size. Grease lubrication is acceptable for slower-speed mining and industrial applications. Confirm operating speed and temperature with our technical team for a specific recommendation.

Q: What documentation is available?

GCr15 / AISI 52100 material certificates, dimensional inspection reports, hardness test reports (60–64 HRC), packing lists, commercial invoices, certificates of origin. SGS / BV / TÜV third-party inspection supported on request.

Q: OEM / private label available?

Yes. Custom box artwork, laser-engraved part number (351184 / 1097784) and logo on bearing ring, fully branded inner/outer packaging. All IP rights belong to you. MOQ and pricing on request.

Q: What is the MOQ?

Minimum 1 pc accepted for sample evaluation. Volume pricing from 3 pcs. Shipping: FOB Qingdao / CIF / EXW.

Related Products — Nexans Bearings GOST 3511 / 3519 Large-Bore Range

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