351984 Double Row Tapered Roller Bearing | 420×560×145mm | Rolling Mill & Mining

GOST 3519 Series · TDO/TDI · 1097984 / 3519/84 / 10979/84 Cross · 420mm Bore · Cr 1630 kN · GCr15 · P0–P2 · OEM/Private Label Available

Specifications

⚠️ Large-bore ordering notice: Confirm exact Cr, C0r, precision grade, and clearance class with our technical team before ordering. Incorrect clearance on a 420mm bearing directly impacts operating temperature and service life.

Structure

The 351984 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

Product Overview

The 351984 (1097984) is a 420×560×145mm double row tapered roller bearing rated at Cr 1630 kN / C0r 3800 kN, engineered for combined heavy radial and bidirectional axial loads. At 420mm bore and approximately 87.4kg, it is the proven choice for rolling mill roll necks, crusher main shafts, large gearbox output shafts, and heavy conveyor drives. 

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, lowering maintenance cost on long-running heavy equipment.

Applications

Cross-Reference

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

FAQ

Q: What is the difference between 351984, 1097984, 3519/84, and 10979/84?

All refer to the same 420×560×145mm double row tapered roller bearing. 351984 / 3519/84 = current GOST designations. 1097984 / 10979/84 = 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. Precision applications may require P5 or P4. Both parameters affect lead time and price — specify at time of order.

Q: What is the lead time?

Standard P0/C0: typically in stock or 3–7 business days. Special precision grades or clearance classes: made-to-order — confirm lead time with our team.

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 (351984 / 1097984) 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 5 pcs. Shipping: FOB Qingdao / CIF / EXW.

Related Products — Nexans Bearings GOST 3519 Large-Bore Range

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