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2306 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with 2306. 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

2306 dimensions and recorded technical data

The recorded 2306 base designation measures 30×72×27 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, NSK, KOYO. 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. 15 recorded variants are listed. A dash means the value is missing, not zero.

Brand / full designationNamed dimensions (mm / in)Dynamic C (kN)Static C0 (kN)Reference speed (rpm)Limiting speed (rpm)Mass (kg / g)
SKF2306Self-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
31.2 kN8.8 kN18000 rpm13000 rpm0.496 kg496 g
NSK2306Self-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Bearing width (B)
27 mm
1.062992 in
35 kN8.75 kN——0.51 kg510 g
KOYO2306Self-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
39.3 kN8.7 kN—8000 rpmLimiting Speeds(Grease Lub.): 8000 min-1Limiting Speeds(Oil Lub.): 11000 min-10.5 kg500 g
SKF2306/C3Self-aligning ball bearing
Recorded bore (d)
30 mm
1.181102 in
Recorded outside dimension (D)
72 mm
2.834646 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
31.2 kN8.8 kN18000 rpm13000 rpm0.496 kg496 g
SKF2306 E-2RS1KTN9Self-aligning ball bearing with tapered bore and seals on both sides
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
22.5 kN6.8 kN18000 rpm6700 rpm0.51 kg510 g
SKF2306 E-2RS1TN9Self-aligning ball bearing with seals on both sides
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
22.5 kN6.8 kN18000 rpm6700 rpm0.52 kg520 g
SKF2306 KSelf-aligning ball bearing with tapered bore
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
31.2 kN8.8 kN18000 rpm13000 rpm0.479 kg479 g
SKF2306 K/C3Self-aligning ball bearing with tapered bore
Recorded bore (d)
30 mm
1.181102 in
Recorded outside dimension (D)
72 mm
2.834646 in
Catalogue width (symbol unverified)
27 mm
1.062992 in
31.2 kN8.8 kN18000 rpm13000 rpm0.479 kg479 g
SKF2306 MSelf-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
31.2 kN8.8 kN18000 rpm13000 rpm0.553 kg553 g
FAG2306-2RS-TVHSelf-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
21.7 kN6.3 kN—7800 rpm0.514 kg514 g
FAG2306-K-TVH-C3Self-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
32.5 kN8.8 kN10400 rpm10200 rpm0.49 kg490 g
FAG2306-MSelf-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
32.5 kN8.8 kN10400 rpm15300 rpm0.542 kg542 g
FAG2306-TVHSelf-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
32.5 kN8.8 kN10400 rpm10200 rpm0.495 kg495 g
FAG2306-TVH-C3Self-aligning ball bearing
Bore diameter (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Width (B)
27 mm
1.062992 in
32.5 kN8.8 kN10400 rpm10200 rpm0.495 kg495 g
NSK2306KSelf-aligning ball bearing
Nominal bore diameter (1:12 taper) (d)
30 mm
1.181102 in
Outside diameter (D)
72 mm
2.834646 in
Bearing width (B)
27 mm
1.062992 in
35 kN8.75 kN———
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
SKF 2306WithoutNot recordedCNSheet metalBearing steelNone
NSK 2306Not recordedNot recordedNot recordedNot recordedNot recordedNot recorded
KOYO 2306OpenNot recordedNot recordedNot recordedNot recordedNot recorded
SKF 2306/C3WithoutNot recordedC3Sheet metalBearing steelNone
SKF 2306 E-2RS1KTN9Seal on both sidesNot recordedCNNon-metallicBearing steelGrease
SKF 2306 E-2RS1TN9Seal on both sidesNot recordedCNNon-metallicBearing steelGrease
SKF 2306 KWithoutNot recordedCNSheet metalBearing steelNone
SKF 2306 K/C3WithoutNot recordedC3Sheet metalBearing steelNone
SKF 2306 MWithoutNot recordedCNMachined brassBearing steelNone
FAG 2306-2RS-TVH2RS — Contact seal on both sidesPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedGA13 — Ball bearing and insert bearing grease
FAG 2306-K-TVH-C3Without — Not sealedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
FAG 2306-MWithout — Not sealedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceM — Solid brass cage, ball guidedNot recordedWithout — Bearing not greased
FAG 2306-TVHWithout — Not sealedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
FAG 2306-TVH-C3Without — Not sealedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
NSK 2306KNot 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.

KOYO

2306

Self-aligning ball bearing

View full technical record →SKF

2306

Self-aligning ball bearing

View full technical record →NSK

2306

Self-aligning ball bearing

View full technical record →FAG

230/600-BEA-XL-K-MB1

Spherical Roller Bearing

View full technical record →FAG

230/600-BEA-XL-K-MB1-C3

Spherical Roller Bearing

View full technical record →FAG

230/600-BEA-XL-MB1

Spherical Roller Bearing

View full technical record →FAG

230/600-BEA-XL-MB1-C3

Spherical Roller Bearing

View full technical record →FAG

230/600-BEA-XL-MB1-H151B

Spherical Roller Bearing

View full technical record →SKF

230/600 CA/C083W509

Spherical roller bearing with relubrication features

View full technical record →SKF

230/600 CA/C08W507

Spherical roller bearing with relubrication features

View full technical record →SKF

230/600 CA/C08W509

Spherical roller bearing with relubrication features

View full technical record →SKF

230/600 CA/C08W509VE664

Spherical roller bearing with relubrication features

View full technical record →
Filter all 269 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.

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