 |
Product Description
The 352964 (GOST current designation) is an Ultra Heavy-Duty Double Row Tapered Roller Bearing with boundary dimensions of 320×440×160mm, featuring a very high static-to-dynamic load ratio (Cor/Cr = 1.56) — well above the standard 3522xx series ratio of 1.24 — reflecting exceptional shock load resistance and suitability for extreme static overload conditions.
Cross-referenced as 2097964 under the original GOST designation system, this bearing belongs to the 3529xx ultra heavy-duty series — a specialized GOST family engineered for the largest, most demanding industrial machinery where standard heavy-duty bearings are insufficient. Confirmed in the ushgt.com double-row tapered roller bearing database as 352964X2 / 2097964, 320×440×160mm.
At 67 kg and 160mm width, the 352964 represents a massive structural commitment to sustained operation under ultra-high combined radial and bidirectional axial loads. Its 320mm bore makes it the ideal solution for large industrial shafts in rolling mills, mining equipment, heavy gearboxes, and paper machinery — applications where reliability under extreme conditions is non-negotiable. Together with the 352968 (340×460×160mm) and 352972 (360×480×160mm), the 352964 forms the 160mm-width ultra heavy-duty triad within the 3529xx series, providing complete coverage for 320–360mm shaft applications.
Parameter | Value |
Part Number (Current) | 352964 |
Cross Reference | 2097964 |
Also Known As | 352964X2 |
Bearing Type | Double Row Tapered Roller Bearing (Ultra Heavy-Duty Series) |
Bore Diameter (d) | 320 mm |
Outer Diameter (D) | 440 mm |
Width (B) | 160 mm |
Dynamic Load Rating (Cr) | 2,500 kN |
Static Load Rating (Cor) | 3,900 kN |
Cor/Cr Ratio | 1.56 |
Limiting Speed (Grease) | 220 r/min |
Limiting Speed (Oil) | 310 r/min |
Weight | 67 kg |
Material | GCr15 / 52100 / 100Cr16 / SUJ2 Chrome Steel |
Hardness | HRC 60–64 |
Seal Type | Open / Shielded / Sealed (available) |
Clearance | C0, C2, C3, C4, C5 |
Precision Grade | ABEC 1/3/5/7/9；DIN620 P0/P6/P5/P4/P2 |
Brand | NKS / NEXANS / OEM available |
✅ Double Row Tapered Roller Design — Simultaneously handles ultra-heavy radial loads AND bidirectional axial loads in both directions, ideal for the most demanding shaft applications with combined loading
✅ Cr=2,500kN / Cor=3,900kN — Ultra-heavy-duty load capacity with Cor/Cr=1.56, providing outstanding resistance to extreme shock loads and catastrophic overloads in rolling mill and mining startup conditions
✅ Cor/Cr = 1.56 — Well Above Standard — Significantly exceeding the standard 3522xx series ratio of 1.24, reflecting superior static overload resistance for severe intermittent shock loading applications
✅ 320mm Bore / 440mm OD / 160mm Wide — Massive structural envelope for 320mm shaft installations requiring maximum load capacity in the heaviest industrial machinery
✅ 67kg Mass — Reflects the substantial structural integrity and roller complement required to sustain Cr=2,500kN / Cor=3,900kN under continuous operation
✅ 220/310 rpm Limiting Speed — Optimized for ultra-heavy slow-speed applications typical of rolling mills, large crushers, and heavy industrial drives
✅ Steel Cage Construction — Heavy-duty steel cage provides superior roller guidance and retention under extreme centrifugal and impact forces
✅ HRC 60–64 Hardness — Premium GCr15/52100 chrome steel with precisely controlled hardness for exceptional wear resistance and fatigue life under extreme loading
✅ Severe-Duty Engineered — Designed specifically for ultra-high loads, severe misalignment, heavily contaminated environments, extreme shocks, and continuous vibrations per GOST ultra heavy-duty standards
✅ Multi-Clearance & Precision Options — C0~C5 clearance and P0~P2 precision grades available to suit diverse application requirements
✅ Open / Shielded / Sealed Variants — Flexible sealing configurations for clean, dusty, or wet operating environments
✅ Full Interchangeability — Compatible with SKF, FAG, Timken, NSK, NTN same-dimension equivalents for seamless maintenance replacement
Based on the bearing's 320mm bore, 2,500kN dynamic load rating, ultra-high Cor/Cr=1.56, and ultra heavy-duty GOST-series construction:
Industry | Application |
Metallurgy / Steel Mills | Heavy rolling mill roll neck bearings, large blooming mill main shafts, roughing mill stands |
Mining Equipment | Large jaw crusher main shafts, gyratory crusher eccentric shafts, SAG/ball mill trunnions |
Heavy Industrial Gearboxes | Large industrial speed reducer output shafts, multi-stage heavy gearbox main shafts |
Paper & Pulp Machinery | Large paper machine roll shafts, heavy press section roll neck bearings |
Power Generation | Large turbine auxiliary equipment, heavy generator shaft supports |
Cement Industry | Large rotary kiln main support rollers, heavy raw mill & cement mill main drives |
Heavy Construction | Large crane main hoisting gear shafts, heavy excavator swing ring drives |
Offshore & Marine | Large ship propulsion shaft supports, heavy offshore drilling equipment |
Forging & Pressing | Heavy hydraulic press main shafts, large forging hammer guide bearings |
Designation System | Part Number |
GOST Current | 352964 |
GOST Original | 2097964 |
Also Known As | 352964X2 |
Material Equivalent | 52100 (AISI) / 100Cr16 (DIN) / SUJ2 (JIS) / GCr15 (GB) |
Interchangeable With | SKF, FAG, Timken, NSK, NTN same-dimension equivalents |
The 352964 forms part of a unique 160mm-width ultra heavy-duty triad within the 3529xx series, alongside the 352968 and 352972:
Model | d × D × B | Cr | Cor | Cor/Cr | Speed Grease/Oil | Weight |
352964 | 320×440×160mm | 2,500 kN | 3,900 kN | 1.56 | 220/310 rpm | 67 kg |
352968 | 340×460×160mm | 2,650 kN | 4,150 kN | 1.57 | 210/300 rpm | 71 kg |
352972 | 360×480×160mm | 2,880 kN | 4,750 kN | 1.65 | 200/280 rpm | ~120 kg |
352236 | Standard 3522xx | 180×320×190mm | 410 kN | 510 kN | 1.24 | —/— rpm |
2352232 | Standard 3522xx | 160×290×180mm | 410 kN | 510 kN | 1.24 | —/— rpm |
352230 | Standard 3522xx | 150×270×170mm | 410 kN | 510 kN | 1.24 | —/— rpm |
Given the 67kg unit weight of the 352964, NEXANS Bearing provides specialized heavy-bearing export services:
Reinforced Wooden Crate Packaging — Custom heavy-duty export crating for 67kg bearings, ensuring safe transit for international shipments
Heavy Freight Coordination — Experienced in LCL/FCL ocean freight for large industrial bearings to global destinations
Full Export Documentation — Certificate of Origin (CO), material certificates, quality inspection reports, packing lists
Installation Guidance — Technical documentation for mounting, alignment, and lubrication of large-bore tapered roller bearings
OEM / Private Label — Custom branding available for distributors and OEM customers
Since 1997, Liaocheng Nexans Bearing Co., Ltd has been a trusted factory-direct manufacturer and global supplier of GOST-standard heavy industrial bearings, with particular expertise in ultra heavy-duty large-bore bearings.
Factory-Direct Pricing — No middlemen, competitive wholesale rates for ultra heavy-duty bearings
Ready Stock — Available inventory for 352964 / 2097964 with fast delivery
Flexible MOQ — Suitable for both single-unit maintenance replacements and bulk OEM orders
OEM / Private Label — Custom branding & packaging available
Full Export Documentation — CO, quality certificates, reinforced export packaging for 67kg bearings
Technical Support — Expert application engineering support for clearance (C0~C5), precision grade (P0~P2), and lubrication recommendations for your specific ultra heavy-duty operating conditions
Email: export@nksbearing.com WhatsApp: +86-15562839480 Website: www.nksbearing.com
NEXANS Bearing — Your trusted factory-direct partner for GOST-standard ultra heavy-duty industrial bearings since 1997.
