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NU305 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with NU305. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.

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Find by measured dimensions

Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.

Exact model evidence

NU305 dimensions and recorded technical data

Use the named dimensions for each complete record below. A generic d×D×B answer is not asserted where the base record is missing, dimension symbols are unverified, or the product uses a different geometry such as a housing or thrust assembly. Suffix records are not substituted for a missing base specification.

The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 10 recorded variants are listed. A dash means the value is missing, not zero.

Brand / full designation	Named dimensions (mm / in)	Dynamic C (kN)	Static C0 (kN)	Reference speed (rpm)	Limiting speed (rpm)	Mass (kg / g)
SKFNU 305 ECJSingle row cylindrical roller bearing, NU design	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	46.5 kN	36.5 kN	12000 rpm	15000 rpm	0.245 kg245 g
SKFNU 305 ECMLSingle row cylindrical roller bearing, NU design	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	46.5 kN	36.5 kN	12000 rpm	22000 rpm	0.286 kg286 g
SKFNU 305 ECPSingle row cylindrical roller bearing, NU design	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	46.5 kN	36.5 kN	12000 rpm	15000 rpm	0.234 kg234 g
SKFNU 305 ECP/C3Single row cylindrical roller bearing, NU design	Recorded bore (d) 25 mm 0.984252 in Recorded outside dimension (D) 62 mm 2.440945 in Catalogue width (symbol unverified) 17 mm 0.669291 in	46.5 kN	36.5 kN	12000 rpm	15000 rpm	0.234 kg234 g
FAGNU305-E-XL-M1Cylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	49 kN	37.5 kN	10100 rpm	21500 rpm	0.27 kg270 g
FAGNU305-E-XL-TVP2Cylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	49 kN	37.5 kN	10100 rpm	14400 rpm	0.234 kg234 g
FAGNU305-E-XL-TVP2-C3Cylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	49 kN	37.5 kN	10100 rpm	14400 rpm	0.234 kg234 g
FAGNU305-E-XL-TVP2-C4Cylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	49 kN	37.5 kN	10100 rpm	14400 rpm	0.234 kg234 g
NSKNU305EWCylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Bearing width (B) 17 mm 0.669291 in	51 kN	37.5 kN	—	—	—
KOYONU305RCylindrical roller bearing	Bore diameter (d) 25 mm 0.984252 in Outside diameter (D) 62 mm 2.440945 in Width (B) 17 mm 0.669291 in	51.9 kN	37.4 kN	—	10000 rpmLimiting Speeds(Grease Lub.): 10000 min-1Limiting Speeds(Oil Lub.): 14000 min-1	0.243 kg243 g

Compare recorded seals, clearance, precision and materials

Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.

Brand / designation	Closure	Original precision	Clearance	Cage	Material	Lubricant
SKF NU 305 ECJ	Without	Not recorded	CN	Sheet metal	Not recorded	None
SKF NU 305 ECML	Without	Not recorded	CN	Machined brass	Not recorded	None
SKF NU 305 ECP	Without	Not recorded	CN	Non-metallic	Not recorded	None
SKF NU 305 ECP/C3	Without	Not recorded	C3	Non-metallic	Not recorded	None
FAG NU305-E-XL-M1	Not recorded	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	M1 — Two Piece Brass Cage Roller Guided	Not recorded	Not recorded
FAG NU305-E-XL-TVP2	Not recorded	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	TVP2 — Solid Window Cage made from PA66	Not recorded	Not recorded
FAG NU305-E-XL-TVP2-C3	Not recorded	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	TVP2 — Solid Window Cage made from PA66	Not recorded	Not recorded
FAG NU305-E-XL-TVP2-C4	Not recorded	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	TVP2 — Solid Window Cage made from PA66	Not recorded	Not recorded
NSK NU305EW	Not recorded	Not recorded	Not recorded	Pressed steel	Not recorded	Not recorded
KOYO NU305R	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded

How to compare these values

Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.

Check load calculations →Estimate rating life →Decode the complete marking →Check replacement evidence →

Related prefix matches — other model numbers may appear

These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.

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