Cross-brand designation analysis

Same-model Comparison

Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.

COMPARE / VERIFY

Cross Reference centre · Interchange verification checklist · Understand suffix differences

You entered 6306-2RS-C4. This table explores the base group 6306; it does not preserve or approve every requested suffix. Search your complete marking first →

Automatic candidate selection

One base designation across loaded brands

Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.

Dimensions verified

“6306” across 7 loaded brands

At least two brands share the same bore, outside diameter and width. Use Custom Compare when you want to choose exact suffix variants yourself.

SKF630630 × 72 × 19 mm FAG630630 × 72 × 19 mm TIMKEN630630 × 72 × 19 mm NSK630630 × 72 × 19 mm KOYO630630 × 72 × 19 mm NACHI630630 × 72 × 19 mm NTN630630 × 72 × 19 mm

Technical comparison

Brand differences at a glance

Choose exact variants instead →

Parameter	SKF630630 × 72 × 19 mm	FAG630630 × 72 × 19 mm	TIMKEN630630 × 72 × 19 mm	NSK630630 × 72 × 19 mm	KOYO630630 × 72 × 19 mm	NACHI630630 × 72 × 19 mm	NTN630630 × 72 × 19 mm
Comparable specifications
Brand	SKF	FAG	TIMKEN	NSK	KOYO	NACHI	NTN
Designation	6306	6306	6306	6306	6306	6306	6306
Product family	Deep groove ball bearings	—	Radial Deep-Groove Ball	Single row deep groove ball bearings	Single-row / Open type	Deep groove ball bearing	Single row deep groove ball bearings
Detailed type	Deep groove ball bearings	Deep groove ball bearings	Deep groove ball bearings	Deep groove ball bearings	Deep groove ball bearings	Deep groove ball bearings	Deep groove ball bearings
Series	—	—	6300	—	—	—	—
Bore diameterd	30 mm	30 mm	30 mm	30 mm	30 mm	30 mm	30 mm
Outside diameterD	72 mm	72 mm	72 mm	72 mm	72 mm	72 mm	72 mm
WidthB	19 mm	19 mm	19 mm	19 mm	19 mm	19 mm	19 mm
Basic dynamic load ratingC	29.6 kN	30.5 kN	26.6 kN	29.3 kN	33.3 kN	33.5 kN	29.5 kN
Basic static load ratingC0	16 kN	16.2 kN	14.9 kN	15 kN	15 kN	15 kN	15 kN
Fatigue load limitPu	0.67 kN	1.05 kN	—	—	1.15 kN	—	1.14 kN
Reference speednref	20000 r/min	10500 r/min	—	—	—	—	—
Limiting speednG	13000 r/min	13700 r/min	—	—	9600 r/min	—	—
Mass≈m	0.34 kg	0.338 kg	0.36 kg	0.345 kg	0.346 kg	0.346 kg	0.36 kg
Precision class	P6 and tighter width tolerance	PN — Normal (ISO 492:2023)	—	—	—	—	—
Internal clearance	CN	CN (Group N) — Normal internal clearance	—	—	—	—	CN
Sealing	Without	Without — Not sealed	Open	Open	Open	Open	open
Cage	Sheet metal	JN — Steel sheet metal	Steel cage	—	—	—	pressed steel cage
Bearing material	Bearing steel	—	—	—	—	—	—
Lubricant	None	Without — Bearing not greased	—	—	—	—	—
Minimum operating temperatureTmin	—	-30 °C	—	—	—	—	-40 °C
Maximum operating temperatureTmax	—	120 °C	—	—	—	—	120 °C
Boundary dimensions
Bearing widthB	—	—	—	19 mm	—	19 mm	—
Minimum bearing chamferr min.	—	—	—	1.1 mm	—	1.1 mm	—
Calculation Factors
K Factor	—	—	0.00	—	—	—	—
Y1 Factor	—	—	0.00	—	—	—	—
Y2 Factor	—	—	0.00	—	—	—	—
Y0 Factor	—	—	0.50	—	—	—	—
E Factor	—	—	0.00	—	—	—	—
Cg Factor	—	—	0.0340	—	—	—	—
Calculation factors
Calculation factorf0	—	13	—	—	—	—	—
Capabilities & suitability
Radial load capacity	—	Yes	—	—	—	—	—
Axial load capacity in one direction	—	Yes	—	—	—	—	—
Axial load capacity in both directions	—	Yes	—	—	—	—	—
Suitable for grease lubrication	—	Yes	—	—	—	—	—
Suitable for oil lubrication	—	Yes	—	—	—	—	—
Unsealed design	—	Yes	—	—	—	—	—
Classification
Official Category Path	—	—	—	—	Deep groove ball bearings - Single-row - Open type	—	—
Official Classification 1	—	—	—	—	Deep groove ball bearings / Single-row / Open type	—	—
Construction
Closure arrangement	—	—	—	—	—	Open	—
Listed closure suffix	—	—	—	—	—	None (open type)	—
Catalogue closure construction	—	—	—	Open	—	—	—
Dimensions
Minimum chamfer dimensionrmin	—	1.1 mm	—	—	—	—	—
Minimum chamfer dimensionrmin	—	0.043 in	—	—	—	—	—
Shoulder diameter outer ringD1	—	59.62 mm	—	—	—	—	—
Shoulder diameter outer ringD1	—	2.347 in	—	—	—	—	—
Caliber diameter outer ringD2	—	61.58 mm	—	—	—	—	—
Caliber diameter outer ringD2	—	2.424 in	—	—	—	—	—
Shoulder diameter inner ringd1	—	44.6 mm	—	—	—	—	—
Shoulder diameter inner ringd1	—	1.756 in	—	—	—	—	—
Dimensions and properties
Internal diameterd	—	—	—	—	—	—	30 mm
External diameterD	—	—	—	—	—	—	72 mm
Bearing/Inner ring widthB	—	—	—	—	—	—	19 mm
Min fillet radiusrs	—	—	—	—	—	—	1.1 mm
Radial clearance class	—	—	—	—	—	—	CN
Engineering — Abutment dimensions
Diameter of shaft abutmentd a	min. 37 mm	—	—	—	—	—	—
Diameter of housing abutmentD a	max. 65 mm	—	—	—	—	—	—
Radius of shaft or housing filletr a	max. 1 mm	—	—	—	—	—	—
Engineering — Calculation data
SKF performance class	SKF Explorer	—	—	—	—	—	—
Minimum load factork r	0.03	—	—	—	—	—	—
Calculation factorf 0	13.1	—	—	—	—	—	—
Engineering — Dimensions
Deviation limits of mid-range bore diametert Δdmp	-0.008 to 0 mm	—	—	—	—	—	—
Deviation limits of mid-range outside diametert ΔDmp	-0.011 to 0 mm	—	—	—	—	—	—
Deviation limits of ring widtht ΔBs	-0.06 to 0 mm	—	—	—	—	—	—
Shoulder diameterd 1	≈ 44.6 mm	—	—	—	—	—	—
Recess diameterD 2	≈ 61.88 mm	—	—	—	—	—	—
Chamfer dimensionr 1,2	min. 1.1 mm	—	—	—	—	—	—
ISO tolerance class for dimensions	P6 and tighter width tolerance	—	—	—	—	—	—
Engineering — Tolerances of run-out
Range of section height at inner ring of assembled bearingt Kia	8 µm	—	—	—	—	—	—
Range of section height at outer ring of assembled bearingt Kea	13 µm	—	—	—	—	—	—
ISO tolerance class for geometrical tolerances	P6	—	—	—	—	—	—
Equivalent-load factors
Catalogue load calculation factorf0	—	—	—	—	—	13.2	—
Load ratings
Basic dynamic radial load ratingCr	—	—	—	29300 N	—	33500 N	—
Basic static radial load ratingC0r	—	—	—	15000 N	—	15000 N	—
Equivalent-load calculation factorf0	—	—	—	13.3	—	—	—
Logistics
Product net weight	0.34 kg	—	—	—	—	—	—
eClass code	23-05-08-01	—	—	—	—	—	—
UNSPSC code	31171504	—	—	—	—	—	—
Lubrication-qualified speed
Limiting speed with grease	—	—	—	11000 r/min	—	—	—
Limiting speed with oil (open bearing)	—	—	—	13000 r/min	—	—	—
Limiting speed with grease (open)	—	—	—	—	—	10000 r/min	—
Limiting speed with oil (open)	—	—	—	—	—	12000 r/min	—
Main Dimensions & Performance Data
Basic dynamic load rating, radialCr	—	30,500 N	—	—	—	—	—
Basic dynamic load rating, radialCr	—	6,857.014 lbf	—	—	—	—	—
Basic static load rating, radialC0r	—	16,200 N	—	—	—	—	—
Basic static load rating, radialC0r	—	3,642.086 lbf	—	—	—	—	—
Fatigue load limit, radialCur	—	1,050 N	—	—	—	—	—
Fatigue load limit, radialCur	—	236.061 lbf	—	—	—	—	—
Manufacturer Identity
Schaeffler Product Code	—	355518	—	—	—	—	—
Material Number	—	—	000000000100417156	—	—	—	—
Official Class Key	—	—	—	—	010-010-010	—	—
Base Type	—	6306	—	—	—	—	—
World Assembly Part Number	—	—	6306	—	—	—	—
Gpsd Group	—	S01	—	—	—	—	—
Upc	—	—	0087796295612	—	—	—	—
Product Line Id	—	14	—	—	—	—	—
X Life Marking	—	n.r.	—	—	—	—	—
Official Source System	—	—	CORE BP - DS DF	—	—	—	—
Official Last Run	—	—	2026-08-23T20:02:47.943	—	—	—	—
SAP material number	—	0167230900000	—	—	—	—	—
Base product	—	2305080101	—	—	—	—	—
Bearing X designation	—	6306	—	—	—	—	—
Mounting Manager ID	—	6306	—	—	—	—	—
Grease application ID	—	6306	—	—	—	—	—
Mounting dimensions
Minimum shaft shoulder diameterda min.	—	—	—	36.5 mm	—	37 mm	—
Maximum shaft shoulder diameterda max.	—	—	—	42.5 mm	—	—	—
Maximum housing shoulder diameterDa max.	—	—	—	65.5 mm	—	65 mm	—
Maximum adjacent fillet radiusra max.	—	—	—	—	—	1 mm	—
Maximum shaft or housing fillet radiusra max.	—	—	—	1 mm	—	—	—
Min shoulder diameter IRda min	—	—	—	—	—	—	36.5 mm
Max shoulder diameter ORDa max	—	—	—	—	—	—	65.5 mm
Max shaft & housing fillet radiusra max	—	—	—	—	—	—	1 mm
Minimum diameter shaft shoulderda min	—	37 mm	—	—	—	—	—
Minimum diameter shaft shoulderda min	—	1.457 in	—	—	—	—	—
Maximum diameter of housing shoulderDa max	—	65 mm	—	—	—	—	—
Maximum diameter of housing shoulderDa max	—	2.559 in	—	—	—	—	—
Maximum fillet radiusra max	—	1 mm	—	—	—	—	—
Maximum fillet radiusra max	—	0.039 in	—	—	—	—	—
Performance
Dynamic loadC	—	—	—	—	—	—	29.5 kN
Static loadC0	—	—	—	—	—	—	15 kN
Fatigue limit loadCu	—	—	—	—	—	—	1.14 kN
Coefficientf0	—	—	—	—	—	—	13.3
Oil lubrication limit speedN lim	—	—	—	—	—	—	12000 r/min
Grease lubrication limit speedN lim	—	—	—	—	—	—	10000 r/min
Min operating temperatureTmin	—	—	—	—	—	—	-40 °C
Max operating temperatureTmax	—	—	—	—	—	—	120 °C
Product characteristics
Catalogue construction	—	—	—	—	—	—	Deep groove ball bearing, radial contact, pressed steel cage, open
Cage construction	—	—	—	—	—	—	pressed steel cage
Closure construction	—	—	—	—	—	—	open
Type of SealWithout	—	Not sealed	—	—	—	—	—
Tolerance classPN	—	Normal (ISO 492:2023)	—	—	—	—	—
Dimensional / heat stabilizationSN	—	Rings dimensional stabilized up to 120°	—	—	—	—	—
Radial internal clearanceCN (Group N)	—	Normal internal clearance	—	—	—	—	—
Bore typeZ	—	Cylindrical	—	—	—	—	—
Product identity
Official product category	Deep groove ball bearings	—	—	—	—	—	—
Official taxonomy path	/products/rolling-bearings/ball-bearings/deep-groove-ball-bearings	—	—	—	—	—	—
Structure group ID	BB1_001_101	—	—	—	—	—	—
Available from SKF	Yes	—	—	—	—	—	—
Remanufacturable	No	—	—	—	—	—	—
Product Identity
Type Description	—	—	Radial Deep-Groove Ball	—	—	—	—
Construction	—	Deep groove ball bearing 63, single row, steel sheet metal cage	Single Row Deep Groove Ball Bearing \| Imperial Series \| 1.1811 in Bore \| 2.8346 in OD \| 0.7480 in Width \| Open \| Cylindrical Bore \| Steel Cage \| C0 Clearance \| ISO P0 Tolerance	—	—	—	—
Number Of Rows	1	—	1	—	—	—	—
Short Description	—	Deep groove ball bearing	—	—	—	—	—
Tapered Bore	—	—	N	—	—	—	—
Properties
Filling slots	Without	—	—	—	—	—	—
Locating feature, bearing outer ring	Without	—	—	—	—	—	—
Bore type	Cylindrical	—	—	—	—	—	—
Matched arrangement	No	—	—	—	—	—	—
Radial internal clearance	CN	—	—	—	—	—	—
Material, bearing	Bearing steel	—	—	—	—	—	—
Coating	Without	—	—	—	—	—	—
Relubrication feature	Without	—	—	—	—	—	—
Indicative carbon footprint for new product	1.3 kg CO 2 e	—	—	—	—	—	—
Reference mass
Catalogue row mass (variants not individually specified)	—	—	—	—	—	0.346 kg	—
Approximate catalogue mass (open reference)	—	—	—	0.345 kg	—	—	—
Technical Data
d	—	—	—	—	72 mm	—	—
Overall Width	—	—	0.000 mm	—	—	—	—
B	—	—	—	—	19 mm	—	—
Radial Rating	—	—	0 N	—	—	—	—
R(Min.)	—	—	—	—	1.1 mm	—	—
Bore Diameter (D)	—	30 mm	—	—	—	—	—
Axial Rating	—	—	0 N	—	—	—	—
Basic Load Ratings : Cr	—	—	—	—	33.3 kN	—	—
Outside Diameter (D)	—	72 mm	—	—	—	—	—
Dynamic Rating C1	—	—	26,600 N	—	—	—	—
Basic Load Ratings : C0R	—	—	—	—	15.0 kN	—	—
Width (B)	—	19 mm	—	—	—	—	—
Dynamic Rating C90	—	—	0 N	—	—	—	—
Fatigue Load Limit : Cu	—	—	—	—	1.15 kN	—	—
Basic Dynamic Load Rating, Radial (Cr)	—	30,500 N	—	—	—	—	—
Dynamic Axial Rating Ca90	—	—	0 N	—	—	—	—
Factor : F0	—	—	—	—	13.3	—	—
Basic Static Load Rating, Radial (C0R)	—	16,200 N	—	—	—	—	—
Dynamic Axial Rating Ca1	—	—	0 N	—	—	—	—
Limiting Speeds(Grease Lub.)	—	—	—	—	9600 min-1	—	—
Operating Temperature Min. (Tmin)	—	-30 °C	—	—	—	—	—
Static Radial Rating C0	—	—	14,900 N	—	—	—	—
Limiting Speeds(Oil Lub.)	—	—	—	—	12000 min-1	—	—
Limiting Speed (Ng)	—	13,700 1/min	—	—	—	—	—
Extended Dynamic Rating Ce	—	—	0 N	—	—	—	—
Da(Min.)	—	—	—	—	36.5 mm	—	—
Operating Temperature Max. (Tmax)	—	120 °C	—	—	—	—	—
Static Axial Rating C0A	—	—	0 N	—	—	—	—
Da(Max.)	—	—	—	—	65.5 mm	—	—
Reference Speed (Nϑr)	—	10,500 1/min	—	—	—	—	—
Ra(Max.)	—	—	—	—	1 mm	—	—
Calculation Factor (F0)	—	13	—	—	—	—	—
Mass(Refer.)	—	—	—	—	0.346 kg	—	—
Fatigue Load Limit, Radial (Cur)	—	1,050 N	—	—	—	—	—
Minimum Diameter Shaft Shoulder (Da Min)	—	37 mm	—	—	—	—	—
Shoulder Diameter Inner Ring (D1)	—	44.6 mm	—	—	—	—	—
Maximum Diameter Of Housing Shoulder (Da Max)	—	65 mm	—	—	—	—	—
Minimum Chamfer Dimension (Rmin)	—	1.1 mm	—	—	—	—	—
Maximum Fillet Radius (Ra Max)	—	1 mm	—	—	—	—	—
Shoulder Diameter Outer Ring (D1)	—	59.62 mm	—	—	—	—	—
Caliber Diameter Outer Ring (D1)	—	61.58 mm	—	—	—	—	—
Temperature range
Operating temperature min.Tmin	—	-30 °C	—	—	—	—	—
Operating temperature min.Tmin	—	-22 °F	—	—	—	—	—
Operating temperature max.Tmax	—	120 °C	—	—	—	—	—
Operating temperature max.Tmax	—	248 °F	—	—	—	—	—

Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.

Same-model Comparison

One base designation across loaded brands

“6306” across 7 loaded brands

Brand differences at a glance

Find, filter and compare bearing model data in one place.