323 series

323 Series Extra Heavy-Duty Single Row Tapered Roller Bearings Full Sizes & Complete Suffix Guide

We supply full range 323 series extra heavy-duty single row tapered roller bearings from 32303 to 32320, ultra-wide cross-section with large contact angle reinforced structure, capable of enduring extreme radial + huge axial combined loads, heavy impact shock and severe dusty high-temperature industrial working environments. Made of high-purity GCr15 bearing steel with precision quenching & tempering heat treatment, these bearings deliver ultra-high rigidity, outstanding wear resistance and long service life under uninterrupted heavy-load operation. They are the top choice for mining, large construction, heavy truck and heavy industrial equipment distributors, standard metric dimensions fully interchangeable with Timken, SKF, NTN original bearings, complete sizes permanently in stock for bulk wholesale orders.

Ultra-Wide Large Angle Heavy Load Reinforced Structure

323 series adopts widened roller and raceway design plus maximum contact angle, axial bearing capacity far surpasses 329/320/330 medium-load series, stronger anti-deformation rigidity under frequent impact heavy loads. Super-finished roller surface minimizes friction heat buildup, stable low-vibration continuous operation under long-hour heavy-duty running conditions, greatly extending overhaul cycle of heavy machinery and cutting equipment maintenance costs for wholesale clients.

Multiple Internal Clearance & Cage Configuration Options

All 323 series bearings adopt high purity GCr15 bearing steel via strict precision quenching heat treatment, covering standard CN, C3, C4 clearance grades to fit normal / medium-high / extreme high temperature heavy-load working environments. Two mainstream cage solutions: stamped low-carbon steel cage for cost-effective mass bulk wholesale; solid machined brass cage for long continuous high-speed heavy-duty running with superior heat dissipation. Strict dimensional tolerance control guarantees seamless assembly matching for heavy vehicle and mining industrial machinery repair replacement.

Universal Extra Heavy-Duty Application Scope

Perfectly suited for heavy-duty truck wheel hubs, medium & heavy commercial vehicle axles, large agricultural tractors & combine harvesters, construction excavators, loaders, bulldozers, tower cranes, heavy industrial gear reducers, mining conveyors, stone crushers, vibrating screens, metallurgical heavy roller equipment and all kinds of heavy-load transmission drive systems requiring large axial load resistance.

32303-32320 Full Dimension Table (d/D/T mm)

Internal Clearance Suffix Code Chart (323 Tapered Roller Series)

Cage Material Suffix Chart (Steel / Brass)

Precision Grade & Special Treatment Suffix

Frequently Asked Questions About 323 Series Extra Heavy-Duty Tapered Roller Bearings

1.Can I mix 323 series with other bearing types in one wholesale bulk order?

Mixed container loading is fully supported. You can combine different 323 series sizes, clearance grades, cage materials together with deep groove ball bearings, pillow block bearings, other tapered roller series (32900/33000/32000) in one shipment to cut down ocean freight cost, flexible low minimum order quantity for mixed wholesale orders.

(Español: Aceptamos carga mixta en contenedor con otros tipos de rodamientos, MOQ flexible para pedidos mayoristas combinados.)

2.Do you offer OEM private label & custom export packaging service for 323 series tapered roller bearings?

Yes, full OEM customization available for all 323 series models. We provide neutral export cartons, custom color boxes, private brand logo printing, customized product labels. Brass cage, P5 precision and high-temperature treated special extra heavy-duty tapered roller bearings all support OEM bulk packaging orders.

(Español: Ofrecemos servicio OEM con empaques personalizados y logo propio para toda la serie 323 de rodamientos cónicos extra resistentes carga pesada.)

3.Are your 323 series tapered roller bearings fully interchangeable with Timken / SKF / NTN original bearings?

All 323 series tapered roller bearings strictly comply with ISO international metric dimensional standards, 100% dimension interchangeable with mainstream global brand original tapered roller bearings. No mechanical modification required during heavy truck axle, mining and construction machinery maintenance replacement, perfectly matching original heavy-load assembly structure.

(Español: Todos nuestros rodamientos serie 323 cumplen norma ISO métrica, intercambiables 100% con Timken, SKF y NTN sin modificaciones mecánicas.)

4.What is your stock & production delivery lead time for 323 series bearings?

Standard 323 models (32303~32320) CN/C3 clearance with steel cages are permanently stocked in warehouse, ready to ship within 3-7 working days after deposit payment. Custom brass cage M suffix, P5 high precision and C4 oversized clearance 323 heavy-duty bearings require 15-28 days dedicated production lead time.

(Español: Modelos estándar en stock envío 3-7 días; modelos personalizados jaula latón o precisión P5 requieren 15-28 días de fabricación.)

5.Which suffix configuration is most recommended for heavy truck axles, excavators and mining crusher heavy load working conditions?

For heavy-duty truck wheel hubs, construction excavators and stone crushers with continuous impact heavy-load running, our best-selling recommended combo is 323XX C3 standard steel cage bearing. The C3 enlarged clearance offsets severe thermal expansion generated by long-hour highway hauling and mining equipment uninterrupted operation, standard steel cage balances cost and durability for large-volume aftermarket heavy machinery parts wholesale replacement orders worldwide.

(Español: Para ejes de camión pesado, excavadoras y trituradoras mineras recomendamos rodamientos serie 323 C3 por holgura ampliada resistente al calor y cargas de impacto.)