Standard Deep Groove Ball Bearings · 6300 Series

6300 Series Deep Groove Ball Bearings

Q: How does the 6300 Series differ from 6200?

For corresponding bores, 6300 uses a wider section and larger outside diameter with higher catalogue Cr and C0r values. It also requires more installation space and a fresh speed and thermal review.

Q: What should be checked before moving from 6200 to 6300?

Check shaft and housing geometry, shoulders, fillets, available width, applied loads, speed, heat, fits, clearance and lubrication. A larger bearing is not an automatic substitute.

Q: Which material is suitable for corrosion-sensitive environments?

304, 420 and 440 stainless options address different corrosion, hardness and load priorities. Provide the medium, temperature, cleaning process and duty so the material can be reviewed.

Q: Can I request samples, drawings or technical confirmation?

Yes. Send the target model, operating conditions, required configuration, quantity and validation plan so availability and technical documents can be confirmed.

The listed 6300 Series uses a wider section and larger outside diameter than the corresponding 6000 and 6200 models, providing higher catalogue load ratings within the shared bore range.

Search 6300ZZ through 6306ZZ and compare d × D × B, Cr, C0r and catalogue grease/oil speed values.

The larger section is not an automatic selection: confirm housing space, shaft arrangement, applied loads, speed, fits, lubrication and duty cycle.

10–30 mm bore35–72 mm outer diameter11–19 mm width

Find Your Size Send Your Requirements

6300 Series deep groove ball bearings from 6301 to 6305 shown by size

Representative models shown

Models: 7
Bore: 10–30 mm
Outer diameter: 35–72 mm
Width: 11–19 mm

Selection table

Find a Bearing by Model or Dimensions

Model-level dimensions and catalogue ratings from the LUMI selection catalogue.

Search model

Bore dOuter DWidth B

7 of 7 models

★ Marked as regular-use in the LUMI catalogue

Model									Request
6300ZZ	10	35	11	11	7640	3470	23	27	Request This Model
★6301ZZ	12	37	12	12	9700	4190	20	24	Request This Model
★6302ZZ	15	42	13	13	11400	5430	17	21	Request This Model
★6303ZZ	17	47	14	14	13580	6580	16	19	Request This Model
★6304ZZ	20	52	15	15	15940	7880	14	17	Request This Model
6305ZZ	25	62	17	17	22380	11490	12	14	Request This Model
6306ZZ	30	72	19	19	27000	15200	10	12	Request This Model

Open and ZZ widths are listed separately where applicable. Limiting speeds are catalogue values in ×1000 rpm; suitable application speed depends on the final bearing configuration and operating conditions.

Need a drawing or additional parameter confirmation? Technical files are supplied through direct project communication.

Request Technical Information

Product Overview

The 6300 Series provides the widest section in this group and higher catalogue load ratings for corresponding bores, when the assembly can accommodate the larger envelope.

Wider bearing section

The listed 6300 models have larger outside diameters and widths than the corresponding 6000 and 6200 rows.

Higher catalogue ratings

Within matching bores in the LUMI catalogue, the 6300 models have higher Cr and C0r values; actual bearing life remains application-dependent.

Transmission and industrial use

The series is a candidate for motor, gearbox and machinery shafts with greater load requirements and sufficient housing space.

Speed and envelope trade-off

The wider section must be evaluated alongside the published speed values, heat, lubrication, fit and available installation space.

Closure Options

Open deep groove ball bearing illustrating an unsealed closure

Open Bearing

Lowest closure friction

An open bearing leaves the raceway accessible and is commonly considered where the surrounding assembly provides protection.

Lowest sealing friction
Convenient lubrication access
Suited to clean, protected environments

Typical applicationsProtected motor housings · Clean mechanisms · Lubrication-accessible assemblies

ZZ metal-shielded deep groove ball bearing illustrating metal closures

ZZ / Metal Shields

Low-friction grease retention

Non-contact metal shields help retain grease and reduce entry of larger dust particles while maintaining low running friction.

Non-contact metal shielding
Low running friction
Helps retain grease

Typical applicationsMotors · Fans · Gearboxes · General industrial equipment

2RS rubber-sealed deep groove ball bearing illustrating rubber seals

RS / 2RS Rubber Seals

Stronger environmental protection

Rubber seals provide stronger protection against dust and moisture and generally retain grease more effectively than Open or ZZ designs.

Stronger dust and moisture protection
Better grease retention
Normally higher sealing friction

Typical applicationsContamination-exposed equipment · Appliance drives · Industrial mechanisms

Exact closure availability should be confirmed by model and application requirements. Applicable speed for RS / 2RS designs should be checked for the selected seal configuration.

Materials & Configuration

Dimensions and ratings in the size table apply to the listed models. Confirm material, precision, clearance, lubrication and closure requirements before ordering.

Bearing Steel

GCr15 / AISI 52100

The standard choice for load capacity, wear resistance and dimensional stability in clean, lubricated industrial service.

Standard industrial choice
High hardness after heat treatment
Requires corrosion protection

304 Stainless Steel

Austenitic stainless

Selected where corrosion resistance and cleanliness are more important than maximum bearing-steel load capability.

Good general corrosion resistance
Suitable for clean or humid environments
Load and hardness limits require review

420 Stainless Steel

Martensitic stainless

A hardenable stainless option balancing corrosion resistance with bearing contact performance for selected environments.

Hardenable stainless grade
Moderate corrosion resistance
Suitable for selected bearing duties

440 Stainless Steel

High-carbon martensitic stainless

Considered where higher hardness and wear resistance are required together with improved corrosion resistance over bearing steel.

High hardness potential
Good wear resistance
Material grade and heat treatment must be confirmed

How to choose

Material Selection

Compare the complete operating requirement rather than selecting from corrosion resistance or hardness alone.

Load and target life
Corrosion exposure
Operating temperature
Lubrication compatibility
Noise and speed target
Cost and supply volume

Available models6300ZZ–6306ZZ as individually listed

Critical checksHousing envelope · Load · Speed · Fit · Lubrication · Temperature

Applications

Higher-load electric motor for 6300 Series bearing review

Higher-Load Motors

Motor shafts with greater load demand and enough housing envelope for the wider series.

Application details

Gearbox for 6300 Series deep groove ball bearing selection

Gearboxes

Transmission shafts where the applied load, alignment and housing space justify a wider section.

Application details

Industrial production machinery for 6300 Series bearing application

Industrial Machinery

Machinery duty cycles with higher load requirements and controlled installation conditions.

Application details

Power Transmission

Shaft and drive arrangements reviewed for radial load, incidental axial load and alignment.

Application details

Heavy-duty industrial equipment for 6300 Series bearing selection

Heavy-Duty Equipment

Equipment requiring greater load capability, with housing space and duty conditions checked before selection.

Application details

OEM Support

Send the model and operating conditions so the available configuration, sample scope and supply requirements can be reviewed before production.

Useful information to send

Model or shaft size
Radial, axial and shock loads
Speed profile and duty cycle
Housing envelope and fits
Temperature and lubrication
Required life and quantity

Send Your Requirements

Load case definition

Provide radial and axial loads, shock factors, duty cycle and target life instead of choosing only from the largest catalogue rating.

Housing-space check

Verify outside diameter, width, shoulders, fillets and neighbouring components for the wider 6300 section.

Thermal and speed review

Assess operating speed, grease, heat generation, fits and clearance together for the selected model.

Validation specification

Define drawing, material, inspection, sample test and release requirements before production supply.

Quality & Inspection

Catalogue load-rating review
Dimensional inspection
Noise and vibration grading

FAQ

When should I choose a 6300 Series bearing?

Consider it when the application needs higher catalogue load ratings than the corresponding 6200 model and the housing can accept the larger outside diameter and width.

How does the 6300 Series differ from 6200?

What should be checked before moving from 6200 to 6300?

Which material is suitable for corrosion-sensitive environments?

Can I request samples, drawings or technical confirmation?

Reviewing a higher-load 6300 Series application?

Send the model, load case, speed profile, housing envelope, fits and service target for a controlled selection review.

Send Your Requirements