323 series

323 series heavy-duty single-row tapered roller bearings, large contact angle, extreme load capacity, for mining, construction, heavy machinery, full models, OEM customization, brand replacement.

Classification :

single-row

Keywords :

single-row tapered roller bearings，323 series single-row tapered roller bearings，heavy-duty single-row tapered roller bearings

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📝 Category Detail

323 series heavy-duty single-row tapered roller bearings feature a large contact angle and reinforced structure, engineered to withstand extreme radial and axial loads, high impact, and harsh industrial environments. Manufactured from high-grade bearing steel with advanced heat treatment, these bearings offer ultra-high rigidity, superior wear resistance, and long service life under continuous heavy-duty operation. They are the preferred solution for mining, construction, and heavy industrial equipment, with standard metric dimensions for global interchangeability and reliable stock support.

🔥 Hot-Selling Models & Dimensions (mm)

Model	d	D	T	Model	d	D	T
32303	17	47	19	32304	20	52	19.25
32305	25	62	21.25	32306	30	72	23.75
32307	35	80	25.25	32308	40	90	27.25
32309	45	100	29.25	32310	50	110	31.5
32311	55	120	33.5	32312	60	130	35.5
32313	65	140	38.5	32314	70	150	40.5
32315	75	160	42.5	32316	80	170	45.5
32317	85	180	47.5	32318	90	190	49.5
32319	95	200	51.5	32320	100	215	56.5

✅ Key Features

Heavy-duty design with large contact angle for extreme loads
Ultra-high combined radial and axial load capacity
Superior impact and vibration resistance
High rigidity for heavy industrial environments
Standard metric dimensions for global replacement

🎯 Application Scenarios

Mining equipment, crushers, vibrating screens
Heavy construction machinery, bulldozers, cranes
Heavy gearboxes, industrial reducers
Large agricultural machinery, harvesters

Category Overview

Single-row tapered roller bearings are separable rolling element bearings engineered to withstand combined radial and unidirectional axial loads simultaneously. Featuring tapered inner/outer raceways and precision tapered rollers, these bearings deliver high load capacity, high rigidity, and precise axial positioning, making them ideal for heavy-load, impact-resistant applications across automotive, industrial machinery, mining, agriculture, and construction. Our full range of metric single-row tapered roller bearings covers all popular series, with complete stock, OEM customization, and global brand replacement solutions.

Our Series Breakdown

Series	Configuration	Key Features	Typical Applications
30200 Series	Single Row	Standard medium-load design, cost-effective, universal fit	Automotive wheel hubs, small gearboxes, general industrial equipment
30300 Series	Single Row	Medium-heavy load, high rigidity, wide application range	Industrial gearboxes, agricultural machinery, construction equipment
32000 Series	Single Row	Narrow cross-section, light-medium load, space-saving	Automotive hubs, compact gearboxes, agricultural drive shafts
32200 Series	Single Row	Versatile medium-heavy load, balanced load & speed, high impact resistance	Truck axles, heavy gearboxes, construction machinery, mining equipment
32300 Series	Single Row	Heavy-duty design, large contact angle, maximum radial/axial load capacity	Large reducers, crushers, vibrating screens, heavy construction machinery
32900 Series	Single Row	Ultra-thin section, compact structure, high load in limited space	Precision machine tools, small gearboxes, automotive transmissions
33000 Series	Single Row	Wide cross-section, high axial load capacity, medium-heavy duty	Heavy vehicles, industrial gearboxes, crane hoists
33100 Series	Single Row	High rigidity, high-speed optimized, medium load	Automotive transmissions, high-speed gearboxes, precision machinery
33200 Series	Single Row	Universal medium-heavy load, enhanced impact resistance	Agricultural machinery, construction equipment, heavy gearboxes

Core Advantages

High Combined Load Capacity: Effectively bear heavy radial loads and unidirectional axial loads simultaneously, ideal for heavy-duty working conditions.
Separable Design: Inner ring (cone) and outer ring (cup) can be installed separately, simplifying assembly, disassembly, and internal clearance adjustment.
High Rigidity & Impact Resistance: Superior performance under shock loads, vibration, and harsh industrial environments.
Precise Axial Positioning: Accurately control shaft axial play, perfect for precision transmission systems and automotive applications.
Wide Compatibility: Multiple series and metric sizes available, interchangeable with international brands (SKF/NSK/FAG/TIMKEN).
Full Stock & Fast Delivery: Complete range of hot-selling models in stock, supporting bulk orders and fast global shipping.
OEM & Customization: Support special materials, clearances, and non-standard size customization for specific application needs.

Typical Industrial Applications

Widely used in automotive wheel hubs, truck axles, gearboxes, reducers, mining equipment, crushers, vibrating screens, rolling mills, agricultural machinery, construction machinery, pumps, compressors, and other heavy-duty mechanical transmission systems.

PRODUCT TESTING

Bearing Forging

Bearing Annealing

Turning Process

Quenching

Bearing Assembly

Bearing Clearance Testing

Grease injection

Bearing Marking

single-row