6300 Series

6300 series are medium-large size single row deep groove ball bearings with high load capacity, smooth running and versatile performance. They support radial and bidirectional axial loads, featuring low noise, low friction and long service life. Ideal for electric motors, pumps, fans, household appliances, gearboxes and general industrial machinery.

Classification :

Deep Groove Ball Bearings

Keywords :

6300 series deep groove ball bearings, 6300 bearing, medium load deep groove ball bearings, industrial motor bearings, sealed 6300 series bearings, 6300 ZZ 2RS bearings, general industrial machinery bearings

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6300 Series Deep Groove Ball Bearings All Sizes & Complete Suffix Explanation

We supply full range 6300 series deep groove ball bearings from 6300 to 6340, with wider outer diameter and thicker width than 6200 series for heavier radial & axial load. Multiple seal types, snap ring grooves, internal clearances, cage materials and precision grades available. Wholesale buyers can check standard dimensions and suffix codes below to select heavy-duty bearings for heavy motors, agricultural machinery, mining equipment, large conveyors and truck parts. All models support OEM, mixed batch and customized packaging.

Heavy Load & High Durability Design

6300 series deep groove ball bearings adopt larger ball diameter and thicker ring structure, bearing higher radial and bidirectional axial load compared with 6200 light series. Optimized raceway geometry ensures stable running under heavy load, low noise and long service life for heavy-duty industrial scenarios.

Universal Dustproof & Waterproof Structure

Made of high-quality bearing steel with standard precision, this series supports open type, ZZ metal shielded and 2RS rubber sealed versions, it provides excellent dustproof and waterproof protection for long service life.

Heavy-Duty Industrial Application Range

Widely applied in heavy-duty electric motors, agricultural tractors, mining conveyors, construction machinery, truck wheel hubs, large fans, water pumps, woodworking machinery and various light to medium‑duty mechanical transmission equipment.

Deep groove ball bearing 6305

6308 Heavy Load Bearing

6310 NR C3 Bearing

6320 Large Size Bearing

6300-6340 Full Dimension Table (d/D/B mm)

Model	d Inner	D Outer	B Width	Model	d Inner	D Outer	B Width
6300	10	35	11	6316	80	170	39
6301	12	37	12	6317	85	180	41
6302	15	42	13	6318	90	190	43
6303	17	47	14	6319	95	200	45
6304	20	52	15	6320	100	215	47
6305	25	62	17	6322	110	240	50
6306	30	72	19	6324	120	260	55
6307	35	80	21	6326	130	280	58
6308	40	90	23	6328	140	300	62
6309	45	100	25	6330	150	320	65
6310	50	110	27	6332	160	340	68
6311	55	120	29	6334	170	360	72
6312	60	130	31	6336	180	380	75
6313	65	140	33	6338	190	400	78
6314	70	150	35	6340	200	420	80
6315	75	160	37

Get Wholesale FOB Price For 6300 Series Heavy Load Bearings

Large stock full 6300 models ZZ, 2RS, NR, C3 clearance heavy duty bearings. Support mixed batch & custom export packaging for industrial distributors.

(Español: Tenemos stock completo serie 6300 baleros de carga pesada, aceptamos pedidos mixtos y empaques personalizados para mayoristas.)

Balero rodamiento serie 6300 para motores pesados, tractores y maquinaria de minería con sello ZZ, 2RS y anillo NR

Get Wholesale FOB Quote Browse Full Bearing Series & Download Dimension Chart

Bearing Seal & Shield Suffix Code Chart (Same Universal Standard)

Suffix	English + Spanish Description	6300 Series Application Scenario	Hot Selling Model Example
No suffix	Open type, no shield/seal Tipo abierto sin tapas ni sellos	Heavy high speed motor, regular lubrication Motor pesado alta velocidad, lubricación periódica	6300, 6305, 6310, 6320
Z	Single steel dust shield Una tapa protectora de acero	Light dust heavy equipment one side covered Poco polvo, maquinaria pesada protección unilateral	6306-Z, 6309-Z, 6313-Z
ZZ / 2Z	Double steel dust shield Doble tapa de acero anti-polvo	Mining light dust heavy load low friction Minería poco polvo, alta carga baja fricción	6305-ZZ, 6308-ZZ, 6310-ZZ, 6318-ZZ
RS	Single rubber contact seal Sello de goma de contacto unilateral	Waterproof heavy machinery single side Maquinaria pesada resistente agua un lado	6304-RS, 6307-RS, 6311-RS
2RS / 2RS1	Double rubber contact seal Sello de goma doble de contacto	Universal waterproof tractor & heavy motor Uso general tractores y motores pesados anti agua	6305-2RS, 6308-2RS, 6310-2RS C3, 6307NR-2RS
RZ / 2RZ	Non-contact rubber seal Sello de goma sin contacto	High speed large fan slight dust resistance Ventiladores grandes alta velocidad ligera anti polvo	6309-2RZ, 6314-2RZ TN9, 6306-RZ
DDU / LLU	NSK double contact seal, equivalent to 2RS Sello doble NSK equivalente a 2RS	Import heavy bearing replacement Repuesto balero pesado compatible NSK	6306DDU, 6310DDU C3, 6314DDU
DD / LL	NSK double non-contact seal, equivalent to 2RZ Sello sin contacto NSK equivalente a 2RZ	High speed medium heavy motors Motores medianos pesados alta velocidad	6307DD, 6312LL, 6305DD

Snap Ring Groove NR N N1 Suffix Table (6300 Series)

Suffix	English + Spanish Description	6300 Heavy Load Application	Hot Selling Model Example
N	Outer ring snap ring groove, without circlip Ranura en anillo exterior sin anillo elástico	Heavy conveyor temporary axial positioning Transportadora pesada posicionamiento axial temporal	6306N, 6309N, 6312N
NR	Outer ring groove + matched circlip (hot selling heavy model) Ranura + anillo elástico incluido (modelo pesado estrella)	Large conveyor, heavy machinery without bearing housing Transportadoras grandes, maquinaria pesada sin base	6306NR, 6309NR-2RS, 6308NR C3, 6312NR-ZZ
N1	Single positioning groove on outer ring Ranura de posicionamiento única exterior	Prevent outer ring rotation under heavy vibration Evita giro anillo exterior con vibraciones pesadas	6310N1, 6315N1-2RS

Internal Clearance C2 CN C3 C4 CM Explanation Table (6300 Heavy Series Focus C3)

Suffix	Clearance Grade + Spanish Translation	6300 Heavy Duty Usage Scene	Hot Selling Model Example
CN (no mark)	Normal standard clearance Holgura estándar normal	Medium general machinery default Maquinaria media general, versión base	6308ZZ, 6309-2RS, 6312NR
C2	Small clearance Holgura reducida	Precision low-speed heavy equipment Equipos de precisión baja velocidad	6307-2RS C2, 6310ZZ
C3	Extra large clearance (most popular for 6300 heavy series) Holgura ampliada (más vendido serie pesada 6300)	Heavy motor, tractor, mining high temperature, heavy load Motores pesados, tractores, minería altas temperaturas carga pesada	6305-2RS C3, 6308ZZ C3, 6310NR-2RS C3, 6316DDU C3
C4	Super large clearance Holgura extra amplia	Mining, large fan, high temp furnace equipment Minería, ventiladores grandes, equipos hornos alta temperatura	6314-2RS C4, 6320ZZ C4
CM	Motor dedicated constant clearance Holgura fija especial para motores	Heavy electric motor dedicated bearing Rodamientos exclusivos para motores industriales pesados	6305ZZ CM, 6308-2RS CM

Cage Material Suffix Chart (Steel / Nylon / Brass)

Suffix	Cage Material + Spanish Translation	Feature for 6300 Heavy Bearings	Hot Selling Model Example
No mark	Stamped steel cage Jaula de acero estampada	Standard low cost heavy load stable Versión económica estándar estable con carga pesada	6305, 6308ZZ, 6310-2RS
TN9 / TP	Glass fiber nylon cage Jaula de nailon con fibra de vidrio	Low noise large fan & medium motor Bajo ruido para ventiladores grandes y motores medianos	6305-2RS TN9, 6308-2RZ TN9 C3, 6306NR TN9
M	Solid brass cage Jaula de latón macizo	High temperature, heavy vibration, continuous running mining equipment Resiste altas temperaturas y vibraciones fuertes para minería	6310M C3, 6315M-2RS, 6308M ZZ
P	Polyamide plastic cage Jaula de plástico poliamida	Low noise light heavy agricultural machinery Silencio para maquinaria agrícola de carga media	6304P-2RS, 6307P ZZ

Precision Grade & Special Treatment Suffix

Suffix	Meaning + Spanish Translation	6300 Series Usage Scenario	Hot Selling Model Example
P0 (no mark)	Standard general grade Grado estándar general	All regular wholesale heavy machinery Toda venta mayorista maquinaria pesada convencional	6305-2RS, 6308NR ZZ
P6	Medium precision Precisión media	General heavy automation equipment Equipos de automatización pesada general	6307-2RS P6 C3, 6310ZZ P6
P5	High precision Alta precisión	Heavy machine tool, precision transmission Máquinas herramienta pesadas, transmisión precisa	6308 P5-2RS, 6312NR P5
P4	Super precision Super precisión	High-speed heavy precision spindle Husillos pesados de precisión alta velocidad	6306 P4-2RZ, 6310 P4 TN9
S / SS	Stainless steel bearing Rodamiento de acero inoxidable	Food heavy machinery, humid corrosion environment Maquinaria alimentaria pesada, ambientes húmedos corrosivos	6305S-2RS, 6308SS ZZ, 6310S NR
A	High temperature tempering Tratamiento térmico para altas temperaturas	Oven, heavy high temp conveyor Hornos, transportadoras pesadas de alta temperatura	6308A-2RS C3, 6315A ZZ
x	ISO standard dimension modified Dimensiones actualizadas según norma ISO	New standard heavy size unified Nuevas medidas pesadas unificadas ISO	6310X-2RS, 6305X NR

Frequently Asked Questions About 6300 Series Heavy Deep Groove Ball Bearings

1.Can I mix different 6300 heavy bearing models in one full container order?

Mixed batch and full mixed container loading are fully supported for all 6300 series sizes. You can combine different inner diameters, seal versions (ZZ, 2RS, NR) and C3 large clearance bearings in one single order to cut down international sea freight cost for importers and industrial distributors. We offer flexible low MOQ for mixed wholesale bulk orders.

(Español: Aceptamos pedidos mixtos de todos los tamaños serie 6300 baleros de carga pesada para mayoristas, MOQ flexible.)

2.Do you supply private brand customized export packaging for bulk 6300 series bearings?

Yes, we provide full custom packaging service for heavy-duty 6300 bearings, including neutral export cartons, private brand logo printing, custom label stickers and customized box sizes. Stainless S series, P5/P4 high precision and high temperature A tempered heavy bearings all support OEM branding requirements.

(Español: Fabricamos empaques personalizados con marca propia para importadores y distribuidores industriales.)

3.Are YJZY 6300 heavy bearings fully interchangeable with SKF, NTN, NSK original bearings?

All our 6300 series heavy deep groove ball bearings are manufactured strictly following international ISO dimensional tolerance standards, fully 1:1 interchangeable with SKF, NTN, NSK, KOYO mainstream brand bearings without modifying installation housings, shafts or mechanical equipment.

(Español: Todos nuestros baleros serie 6300 cumplen norma ISO, intercambiables con marcas internacionales como SKF y NTN sin modificaciones.)

4.How many days is production & shipping lead time for in-stock 6300 heavy bearings?

All standard regular sizes from 6300 up to 6320 with ZZ / 2RS / NR / C3 variants are stocked in our large industrial warehouse, ready to ship within 3–7 working days after deposit. Special custom specifications like stainless steel, brass M cage, P4 precision and oversized 6322–6340 non-stock bearings require 15–28 days manufacturing lead time.

(Español: Los modelos estándar con stock se envían en 3 a 7 días hábiles, los baleros pesados personalizados requieren mayor plazo de fabricación.)

5.What is the most recommended suffix for tractor & mining heavy machinery 6300 bearings?

For agricultural tractors, mining conveyors and heavy industrial motors, our top selling combo is 63xx-2RS C3 NR: double rubber seal for dust/water resistance, C3 enlarged clearance to compensate thermal expansion under heavy load, plus NR snap ring groove with matching circlip for easy shaft positioning without extra bearing housing. It is our best-selling heavy-duty configuration for global bulk distributors.

(Español: Para tractores y maquinaria minera recomendamos baleros serie 6300 2RS C3 NR por su resistencia a polvo, agua y altas temperaturas.)

Category Introduction

Deep Groove Ball Bearings are the most versatile and widely used type of rolling element bearings, suitable for a vast range of general industrial applications. Characterized by their simple construction, high speed capability, and low friction, these bearings are designed to handle radial loads as well as bidirectional axial loads.Our deep groove ball bearing product line covers an extensive size range, from ultra-miniature bearings for electronic components to large-sized bearings for heavy machinery and motors. We offer open, ZZ metal-shielded, and 2RS rubber-sealed versions to ensure optimal performance in both clean and harsh environmental conditions.

Our Series Breakdown

We provide a full spectrum of deep groove ball bearing series to meet every precision and load requirement:

Series	Size Range	Key Features	Typical Applications
6000 Series	Miniature & Small	Ultra-compact, high speed, low noise	Small motors, office equipment, power tools
6200 Series	General Purpose	Excellent all-round performance, high rigidity	Electric motors, fans, pumps, conveyors
6300 Series	Medium Duty	Higher radial load capacity, sturdy structure	Gearboxes, agricultural machinery, industrial drives
6400 Series	Heavy Duty	Extra large cross-section, maximum load	Heavy mining equipment, large crushers, high load motors
6700/6800 Series	Ultra-Thin	Space-saving, thin section design	Precision instruments, medical devices, small electronics
Flange Series	Integrated Mount	Built-in flange for easy axial positioning	Robotics, small mechanisms, precision modules

Core Advantages

High Speed & Smoothness: Optimized raceway design ensures quiet and stable operation at high rotational speeds.
Universal Compatibility: Seamlessly fits into most standard machinery due to interchangeable dimensions.
Cost-Effective Reliability: A cost-efficient solution with long service life and low maintenance costs.
Full Sealing Options: Available with ZZ (Metal Shields) and 2RS (Rubber Seals) for maximum protection against dust and moisture.

PRODUCT TESTING

Bearing Forging

Bearing Annealing

Turning Process

Quenching

Bearing Assembly

Bearing Clearance Testing

Grease injection

Bearing Marking

Deep Groove Ball Bearings