320 Series

320 series metric single-row tapered roller bearings, narrow section, light-medium load, GCr15 steel, for automotive hubs, gearboxes, agricultural machinery, full models in stock, OEM replacement available.

Classification :

single-row

Keywords :

single-row tapered roller bearings

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📝 Category Detail

320 series metric single-row tapered roller bearings are engineered with a narrow cross-section, delivering balanced light-to-medium radial and axial load capacity in compact installation spaces. Manufactured from premium GCr15 (100Cr6) high-carbon chromium bearing steel with precision heat treatment, these bearings offer excellent wear resistance, dimensional stability, and high cost-performance, making them a staple for mass production and aftermarket applications. Their standard metric dimensions ensure full interchangeability with international brands, ideal for automotive wheel hubs, gearboxes, agricultural machinery, and general industrial equipment.

🔥 Hot-Selling Models & Dimensions (mm)

Model	d (Bore)	D (Outer)	T (Width)	Model	d (Bore)	D (Outer)	T (Width)
32004X	20	42	15	32005X	25	47	15
32006X	30	55	17	32007X	35	62	18
32008X	40	68	19	32009X	45	75	20
32010X	50	80	20	32011X	55	90	23
32012X	60	95	23	32013X	65	100	23
32014X	70	110	25	32015X	75	115	25
32016X	80	125	29	32017X	85	130	29
32018X	90	140	32	32020X	100	150	32
32022X	110	170	38	32024X	120	180	38

✅ Key Features

Narrow section design for space-saving installation
Balanced radial/axial load capacity for medium-duty use
Premium GCr15 (100Cr6) bearing steel for long service life
Standard metric dimensions for global interchangeability
High cost-performance for mass production and aftermarket

🎯 Application Scenarios

Automotive wheel hubs, differential gears
Gearboxes, reducers, transmission systems
Agricultural machinery, tractors, harvesters
General industrial equipment, machine tools

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