99,016 bearing records · search, filter and compare

info@bearingscope.com
Find · understand · compare

NU 310 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with NU 310. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.

On this page5 sections

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.

For tapered assemblies use total width T; for units or flanged bearings also check the mounting drawing.

Exact model evidence

NU 310 dimensions and recorded technical data

The recorded NU 310 base designation measures 50×110×27 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from NTN. It does not assign the same dimensions or operating ratings to every suffix.

The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 19 recorded variants are listed. A dash means the value is missing, not zero.

Exact designation reference

Catalogue parameters for NU 310

Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.

Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.

NTN NU310
NTN NU310 — 24 recorded parameters

Single row cylindrical roller bearings

Reference: NTN Europe public product catalogue; source snapshot 2026-10-02.

For this exact NTN NU310 record, the nominal envelope is 50×110×27 mm (d = internal diameter; D = external diameter; B = bearing/inner ring width). These are bearing or washer dimensions, not shaft/housing fit limits.

Calculated inch equivalent: 1.968504×4.330709×1.062992 in, in the same axis order. The conversion uses exactly 25.4 mm per inch and rounds to six decimals; it is not an inch-series designation or a machining tolerance.

Keep the prefix when matching this cylindrical roller bearing. The source construction below, including any axial-load direction statement, belongs only to the complete recorded designation; a similar NU, NJ or NUP number is not an approved substitute.

Use grease- and oil-qualified speed entries only for the named lubrication condition. Dynamic C and static C0 are catalogue ratings, not a universal safe load or installation approval; shoulder and fillet limits are separate from boundary size.

Dimensions and properties

ParameterSource symbolRecorded value
Internal diameterd50 mm
External diameterD110 mm
Bearing/Inner ring widthB27 mm
Upper roller diameterE95 mm
Under roller diameterF65 mm
Min fillet radiusrs2 mm
Min fillet radiusr1s2 mm
Radial clearance classNot separately recordedCN
MassNot separately recorded1.14 kg

Performance

ParameterSource symbolRecorded value
Dynamic loadC96.5 kN
Static loadC086 kN
Fatigue limit loadCu10.5 kN
Oil lubrication limit speedN lim7700 r/min
Grease lubrication limit speedN lim6500 r/min
Min operating temperatureTmin-40 °C
Max operating temperatureTmax120 °C

Mounting dimensions

ParameterSource symbolRecorded value
Min shoulder diameter IRda min59 mm
Small face shoulder max diameterda max63 mm
Min inner ring GO diameterdb min67 mm
Max shoulder diameter ORDa max101 mm
Max fillet radiusra max2 mm
Max fillet radiusr1a2 mm

Product characteristics

ParameterSource symbolRecorded value
Catalogue constructionNot separately recordedSingle row cylindrical roller bearing, floating, separable, pressed steel cage
Cage constructionNot separately recordedpressed steel cage
Open NTN NU310 product record →
Clearance tables →Precision classes →Load calculations →Interchange checks →
Brand / full designationNamed dimensions (mm / in)Dynamic C (kN)Static C0 (kN)Reference speed (rpm)Limiting speed (rpm)Mass (kg / g)
NTNNU310Cylindrical roller bearing
Internal diameter (d)
50 mm
1.968504 in
External diameter (D)
110 mm
4.330709 in
Bearing/Inner ring width (B)
27 mm
1.062992 in
96.5 kN86 kN——1.14 kg1140 g
SKFNU 310 ECJSingle row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.18 kg1180 g
SKFNU 310 ECJ/C3Single row cylindrical roller bearing, NU design
Recorded bore (d)
50 mm
1.968504 in
Recorded outside dimension (D)
110 mm
4.330709 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.18 kg1180 g
SKFNU 310 ECMSingle row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.31 kg1310 g
SKFNU 310 ECM/C3Single row cylindrical roller bearing, NU design
Recorded bore (d)
50 mm
1.968504 in
Recorded outside dimension (D)
110 mm
4.330709 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.31 kg1310 g
SKFNU 310 ECM/C3VL0241INSOCOAT single row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.31 kg1310 g
SKFNU 310 ECM/C4VA3091INSOCOAT single row cylindrical roller bearing, NU design
Recorded bore (d)
50 mm
1.968504 in
Recorded outside dimension (D)
110 mm
4.330709 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.31 kg1310 g
SKFNU 310 ECMLSingle row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm12000 rpm1.28 kg1280 g
SKFNU 310 ECPSingle row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.14 kg1140 g
SKFNU 310 ECP/C3Single row cylindrical roller bearing, NU design
Recorded bore (d)
50 mm
1.968504 in
Recorded outside dimension (D)
110 mm
4.330709 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.14 kg1140 g
SKFNU 310 ECP/C3LSingle row cylindrical roller bearing, NU design
Recorded bore (d)
50 mm
1.968504 in
Recorded outside dimension (D)
110 mm
4.330709 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.14 kg1140 g
SKFNU 310 ECPHSingle row cylindrical roller bearing, NU design
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
127 kN112 kN6700 rpm8000 rpm1.12 kg1120 g
FAGNU310-E-XL-M1Cylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
131 kN114 kN6000 rpm11600 rpm1.28 kg1280 g
FAGNU310-E-XL-TVP2Cylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
131 kN114 kN6000 rpm8900 rpm1.12 kg1120 g
FAGNU310-E-XL-TVP2>ACylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
131 kN114 kN6000 rpm8900 rpm1.14 kg1140 g
FAGNU310-E-XL-TVP2-C3Cylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
131 kN114 kN6000 rpm8900 rpm1.12 kg1120 g
FAGNU310-E-XL-TVP2-C3>ACylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
131 kN114 kN6000 rpm8900 rpm1.14 kg1140 g
NSKNU310EWCylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Bearing width (B)
27 mm
1.062992 in
135 kN113 kN———
KOYONU310RCylindrical roller bearing
Bore diameter (d)
50 mm
1.968504 in
Outside diameter (D)
110 mm
4.330709 in
Width (B)
27 mm
1.062992 in
138 kN113 kN—5500 rpmLimiting Speeds(Grease Lub.): 5500 min-1Limiting Speeds(Oil Lub.): 7400 min-11.15 kg1150 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 / designationClosureOriginal precisionClearanceCageMaterialLubricant
NTN NU310Not recordedNot recordedCNpressed steel cageNot recordedNot recorded
SKF NU 310 ECJWithoutNot recordedCNSheet metalNot recordedNone
SKF NU 310 ECJ/C3WithoutNot recordedC3Sheet metalNot recordedNone
SKF NU 310 ECMWithoutNot recordedCNMachined brassNot recordedNone
SKF NU 310 ECM/C3WithoutNot recordedC3Machined brassNot recordedNone
SKF NU 310 ECM/C3VL0241WithoutNot recordedC3Machined brassBearing steelNone
SKF NU 310 ECM/C4VA3091WithoutNot recordedC3Machined brassBearing steelNone
SKF NU 310 ECMLWithoutNot recordedCNMachined brassNot recordedNone
SKF NU 310 ECPWithoutNot recordedCNNon-metallicNot recordedNone
SKF NU 310 ECP/C3WithoutNot recordedC3Non-metallicNot recordedNone
SKF NU 310 ECP/C3LWithoutNot recordedC3LNon-metallicNot recordedNone
SKF NU 310 ECPHWithoutNot recordedCNNon-metallicNot recordedNone
FAG NU310-E-XL-M1Not recordedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceM1 — Two Piece Brass Cage Roller GuidedNot recordedNot recorded
FAG NU310-E-XL-TVP2Not recordedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVP2 — Solid Window Cage made from PA66Not recordedNot recorded
FAG NU310-E-XL-TVP2>ANot recordedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVP2 — Solid Window Cage made from PA66Not recordedNot recorded
FAG NU310-E-XL-TVP2-C3Not recordedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVP2 — Solid Window Cage made from PA66Not recordedNot recorded
FAG NU310-E-XL-TVP2-C3>ANot recordedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVP2 — Solid Window Cage made from PA66Not recordedNot recorded
NSK NU310EWNot recordedNot recordedNot recordedPressed steelNot recordedNot recorded
KOYO NU310RNot recordedNot recordedNot recordedNot recordedNot recordedNot 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.

NTN

NU310

Cylindrical roller bearing

View full technical record →SKF

NU 310 ECJ

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECJ/C3

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECM

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECM/C3

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECM/C3VL0241

INSOCOAT single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECM/C4VA3091

INSOCOAT single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECML

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECP

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECP/C3

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECP/C3L

Single row cylindrical roller bearing, NU design

View full technical record →SKF

NU 310 ECPH

Single row cylindrical roller bearing, NU design

View full technical record →
Filter all 19 prefix results →

Check the drawing before substituting

Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.

Measurement guide →Cross-reference checks →

Reference basis & data limits

Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.

Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.

Search the consolidated catalogue

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

Open model search