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6318 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 6318. 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.
6318 dimensions and recorded technical data
The recorded 6318 base designation measures 90×190×43 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, FAG, 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. 69 recorded variants are listed. A dash means the value is missing, not zero.
Read the original dimensions for 6318
Boundary size alone does not describe every ring, shoulder or assembled unit. These tables retain the recorded manufacturer labels, symbols, units and limits for each complete marking. Expand a record to check its detailed measurements.
Important: an approximate value, a minimum or a maximum keeps that qualifier. These reference extracts are not CAD drawings, fit recommendations or replacement approvals.
SKF 6318/C3 — 3 dimension fields
Deep groove ball bearing. Source: SKF product catalogue; recorded snapshot 2026-09-02.
The source gives named dimensions but no drawing symbol for some values. An unqualified width is not relabelled as inner-ring B or assembly T.
Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | Not supplied separately | 90.0 mm |
| Outside diameter | Not supplied separately | 190.0 mm |
| Width | Not supplied separately | 43.0 mm |
SKF 6318 — 12 dimension fields
Deep groove ball bearing. Source: SKF product catalogue; recorded snapshot 2026-09-02.
Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.
Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 90 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.015 to 0 mm |
| Outside diameter | D | 190 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.02 to 0 mm |
| Width | B | 43 mm |
| Deviation limits of ring width | t ΔBs | -0.1 to 0 mm |
| Shoulder diameter | d 1 | ≈ 121.15 mm |
| Recess diameter | D 2 | ≈ 163.9 mm |
| Chamfer dimension | r 1,2 | min. 3 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 104 mm |
| Diameter of housing abutment | D a | max. 176 mm |
| Radius of shaft or housing fillet | r a | max. 2.5 mm |
FAG 6318 — 9 dimension fields
Deep groove ball bearing. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.
Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.
Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 90 mm |
| Outside diameter | D | 190 mm |
| Width | B | 43 mm |
| Minimum chamfer dimension | rmin | 3 mm |
| Shoulder diameter outer ring | D1 | 157.18 mm |
| Shoulder diameter inner ring | d1 | 123.66 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 104 mm |
| Maximum diameter of housing shoulder | Da max | 176 mm |
| Maximum fillet radius | ra max | 2.5 mm |
FAG 6318-C3 — 9 dimension fields
Deep groove ball bearing. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.
Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.
Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 90 mm |
| Outside diameter | D | 190 mm |
| Width | B | 43 mm |
| Minimum chamfer dimension | rmin | 3 mm |
| Shoulder diameter outer ring | D1 | 157.18 mm |
| Shoulder diameter inner ring | d1 | 123.66 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 104 mm |
| Maximum diameter of housing shoulder | Da max | 176 mm |
| Maximum fillet radius | ra max | 2.5 mm |
KOYO 6318 — 3 dimension fields
Deep groove ball bearing. Source: JTEKT / Koyo product catalogue; recorded snapshot 2026-09-02.
Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 90 mm |
| Outside diameter | D | 190 mm |
| Width | B | 43 mm |
TIMKEN 6318-C3 — 4 dimension fields
Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.
Metric and inch measurements below are the values published together in this dated manufacturer record. Their displayed rounding is retained; the inch column does not turn a metric design into an inch-series design.
Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.
Shaft and housing backing-shoulder dimensions, maximum fillet radii and signed offsets answer different installation questions. Preserve the named face, limit and sign; they are not additional bearing outside diameters or nominal widths.
This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore (d) | d | 90 mm |
| O.D. (D) | D | 190 mm / 7.480 in |
| Width (B) | B | 43 mm / 1.693 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 3 mm / 0.118 in |
TIMKEN 6318 — 4 dimension fields
Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.
Metric and inch measurements below are the values published together in this dated manufacturer record. Their displayed rounding is retained; the inch column does not turn a metric design into an inch-series design.
Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.
Shaft and housing backing-shoulder dimensions, maximum fillet radii and signed offsets answer different installation questions. Preserve the named face, limit and sign; they are not additional bearing outside diameters or nominal widths.
This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore (d) | d | 90 mm |
| O.D. (D) | D | 190 mm / 7.480 in |
| Width (B) | B | 43 mm / 1.693 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 3 mm / 0.118 in |
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| SKF6318Deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.9 kg4900 g |
| FAG6318Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.164 kg5164 g |
| TIMKEN6318Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| NSK6318Deep groove ball bearing |
| 157 kN | 107 kN | — | — | 4.98 kg4980 g |
| KOYO6318Deep groove ball bearing |
| 178 kN | 107 kN | — | 3500 rpmLimiting Speeds(Grease Lub.): 3500 min-1Limiting Speeds(Oil Lub.): 4200 min-1 | 4.91 kg4910 g |
| SKF6318-2RS1Deep groove ball bearing with seals or shields |
| 151 kN | 108 kN | — | 2400 rpm | 4.99 kg4990 g |
| SKF6318-2RS1/C3Deep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 2400 rpm | 4.99 kg4990 g |
| SKF6318 2RSJEMDeep groove ball bearing |
| 151 kN | 108 kN | — | 2400 rpm | 4.99 kg4990 g |
| SKF6318-2ZDeep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 3800 rpm | 5.04 kg5040 g |
| SKF6318-2Z/C3Deep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 3800 rpm | 5.04 kg5040 g |
| SKF6318-2Z/C3GJNDeep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 3800 rpm | 5.04 kg5040 g |
| SKF6318 2ZJEMDeep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 3800 rpm | 5 kg5000 g |
| SKF6318/C3Deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.9 kg4900 g |
| SKF6318/C3S1Deep groove ball bearing |
| 151 kN | 102 kN | 7500 rpm | 4800 rpm | 4.82 kg4820 g |
| SKF6318/C3VL0241INSOCOAT® deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.9 kg4900 g |
| SKF6318/C4Deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.9 kg4900 g |
| SKF6318/C4S1Deep groove ball bearing |
| 151 kN | 102 kN | 7500 rpm | 4800 rpm | 4.82 kg4820 g |
| SKF6318/HC5C3Hybrid ceramic deep groove ball bearing |
| 143 kN | 108 kN | 9000 rpm | 5600 rpm | 4.29 kg4290 g |
| SKF6318/HC5C3VA505SKF CeraDrive, hybrid ceramic deep groove ball bearing optimized for industrial electric motor |
| 146 kN | 93 kN | 9000 rpm | 5600 rpm | 4.9 kg4900 g |
| SKF6318 JEMDeep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.9 kg4900 g |
| SKF6318 MDeep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 7000 rpm | 6.07 kg6070 g |
| SKF6318 M/C3Deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 7000 rpm | 6 kg6000 g |
| SKF6318 M/C3VL0241INSOCOAT® deep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 7000 rpm | 5.58 kg5580 g |
| SKF6318-ZDeep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.92 kg4920 g |
| SKF6318-Z/C3Deep groove ball bearing with seals or shields |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.92 kg4920 g |
| SKF6318 ZJEMDeep groove ball bearing |
| 151 kN | 108 kN | 7500 rpm | 4800 rpm | 4.92 kg4920 g |
| FAG6318-2RSRDeep groove ball bearing |
| 142 kN | 102 kN | — | 2170 rpm | 5.5 kg5500 g |
| FAG6318-2RSR-C3Deep groove ball bearing |
| 142 kN | 102 kN | — | 2170 rpm | 5.5 kg5500 g |
| FAG6318-2ZDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.4 kg5400 g |
| FAG6318-2Z-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.4 kg5400 g |
| FAG6318-2Z-C4Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.4 kg5400 g |
| FAG6318-2Z-J20CDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.43 kg5430 g |
| FAG6318-2Z-J20C-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.43 kg5430 g |
| FAG6318-2Z-L069-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4150 rpm | 5.36 kg5360 g |
| FAG6318-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.34 kg5340 g |
| FAG6318-C4Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.34 kg5340 g |
| FAG6318-J20AADeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.3 kg5300 g |
| FAG6318-J20AA-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.3 kg5300 g |
| FAG6318-J20GA-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.3 kg5300 g |
| FAG6318-MDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6.075 kg6075 g |
| FAG6318-M-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6.075 kg6075 g |
| FAG6318-M-C4Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6.2 kg6200 g |
| FAG6318-M-J20AA-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6 kg6000 g |
| FAG6318-M-J20AA-C4Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6 kg6000 g |
| FAG6318-M-J20GA-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6.1 kg6100 g |
| FAG6318-M-J20GA-C5-M15CSDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 6300 rpm | 6.1 kg6100 g |
| FAG6318-TVHDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.15 kg5150 g |
| FAG6318-TVH-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.15 kg5150 g |
| FAG6318-ZDeep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.48 kg5480 g |
| FAG6318-Z-C3Deep groove ball bearing |
| 142 kN | 102 kN | 5100 rpm | 4900 rpm | 5.48 kg5480 g |
| TIMKEN6318-2RSDeep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-2RS-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-2RS/VSL609Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-2RZ-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.9 kg4900 g |
| TIMKEN6318-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318M-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 6.13 kg6130 g |
| TIMKEN6318-RS-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.9 kg4900 g |
| TIMKEN6318/VSL609Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-ZDeep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-Z-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-ZZDeep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| TIMKEN6318-ZZ-C3Deep groove ball bearing |
| 143 kN | 107 kN | — | — | 4.91 kg4910 g |
| NSK6318DDUDeep groove ball bearing |
| 157 kN | 107 kN | — | — | — |
| NSK6318VVDeep groove ball bearing |
| 157 kN | 107 kN | — | — | — |
| NSK6318ZZDeep groove ball bearing |
| 157 kN | 107 kN | — | — | — |
| KOYO6318 2RSDeep groove ball bearing |
| 178 kN | 107 kN | — | 2400 rpmLimiting Speeds(Grease Lub.): 2400 min-1 | 4.91 kg4910 g |
| KOYO6318 2RUDeep groove ball bearing |
| 178 kN | 107 kN | — | 3500 rpmLimiting Speeds(Grease Lub.): 3500 min-1 | 4.91 kg4910 g |
| KOYO6318NRDeep groove ball bearing |
| 178 kN | 107 kN | — | 3500 rpmLimiting Speeds(Grease Lub.): 3500 min-1Limiting Speeds(Oil Lub.): 4200 min-1 | 4.91 kg4910 g |
| KOYO6318 ZZXDeep groove ball bearing |
| 178 kN | 107 kN | — | 3500 rpmLimiting Speeds(Grease Lub.): 3500 min-1 | 4.91 kg4910 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 6318 | Without | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | None |
| FAG 6318 | Without — Not sealed | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| TIMKEN 6318 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| NSK 6318 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6318 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 6318-2RS1 | Seal on both sides | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | Grease |
| SKF 6318-2RS1/C3 | Seal on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6318 2RSJEM | Seal on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6318-2Z | Shield on both sides | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | Grease |
| SKF 6318-2Z/C3 | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6318-2Z/C3GJN | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6318 2ZJEM | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6318/C3 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6318/C3S1 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6318/C3VL0241 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6318/C4 | Without | Not recorded | C4 | Sheet metal | Bearing steel | None |
| SKF 6318/C4S1 | Without | Not recorded | C4 | Sheet metal | Bearing steel | None |
| SKF 6318/HC5C3 | Without | Not recorded | C3 | Sheet metal | Hybrid (ceramic balls) | None |
| SKF 6318/HC5C3VA505 | Without | Not recorded | C3 | Sheet metal | Hybrid (ceramic balls) | None |
| SKF 6318 JEM | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6318 M | Without | P6 and tighter width tolerance | CN | Machined brass | Bearing steel | None |
| SKF 6318 M/C3 | Without | Not recorded | C3 | Machined brass | Bearing steel | None |
| SKF 6318 M/C3VL0241 | Without | Not recorded | C3 | Machined brass | Bearing steel | None |
| SKF 6318-Z | Shield on one side | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | None |
| SKF 6318-Z/C3 | Shield on one side | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6318 ZJEM | Shield on one side | Not recorded | C3 | Sheet metal | Bearing steel | None |
| FAG 6318-2RSR | 2RSR — Contact seal on both sides | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2RSR-C3 | 2RSR — Contact seal on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z-C3 | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z-C4 | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z-J20C | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z-J20C-C3 | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | GA13 — Ball bearing and insert bearing grease |
| FAG 6318-2Z-L069-C3 | 2Z — Non-contact shield on both sides | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | L069 — Low noise high-temperature grease, interchangeable with grease L207 |
| FAG 6318-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-C4 | Without — Not sealed | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-J20AA | Without — Not sealed | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-J20AA-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-J20GA-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-M | Without — Not sealed | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-C4 | Without — Not sealed | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-J20AA-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-J20AA-C4 | Without — Not sealed | PN — Normal (ISO 492:2023) | C4 (Group 4) — Internal clearance larger than C3 | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-J20GA-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-M-J20GA-C5-M15CS | Without — Not sealed | PN — Normal (ISO 492:2023) | C5 (Group 5) — Internal clearance larger than C4 | M — Solid brass cage, rolling element guided | Not recorded | Without — Bearing not greased |
| FAG 6318-TVH | Without — Not sealed | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | TVH — Solid cage made of glass-fiber reinforced polyamid PA66 | Not recorded | Without — Bearing not greased |
| FAG 6318-TVH-C3 | Without — Not sealed | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | TVH — Solid cage made of glass-fiber reinforced polyamid PA66 | Not recorded | Without — Bearing not greased |
| FAG 6318-Z | Z — Non-contact shield on one Side | PN — Normal (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| FAG 6318-Z-C3 | Z — Non-contact shield on one Side | PN — Normal (ISO 492:2023) | C3 (Group 3) — Internal clearance larger than CN | JN — Steel sheet metal | Not recorded | Without — Bearing not greased |
| TIMKEN 6318-2RS | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-2RS-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-2RS/VSL609 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-2RZ-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-C3 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318M-C3 | Open | Not recorded | Not recorded | Brass cage | Not recorded | Not recorded |
| TIMKEN 6318-RS-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318/VSL609 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-Z | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-Z-C3 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-ZZ | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6318-ZZ-C3 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| NSK 6318DDU | Contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6318VV | Non-contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6318ZZ | Metal shields on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6318 2RS | Contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6318 2RU | Non-contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6318NR | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6318 ZZX | Shielded ZZ | 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.
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.
SKF
6318
Deep groove ball bearing
View full technical record →FAG6318
Deep groove ball bearing
View full technical record →TIMKEN6318
Deep groove ball bearing
View full technical record →KOYO6318
Deep groove ball bearing
View full technical record →NSK6318
Deep groove ball bearing
View full technical record →TIMKEN6318-2RS
Deep groove ball bearing
View full technical record →KOYO6318 2RS
Deep groove ball bearing
View full technical record →SKF6318-2RS1
Deep groove ball bearing with seals or shields
View full technical record →SKF6318-2RS1/C3
Deep groove ball bearing with seals or shields
View full technical record →TIMKEN6318-2RS-C3
Deep groove ball bearing
View full technical record →SKF6318 2RSJEM
Deep groove ball bearing
View full technical record →FAG6318-2RSR
Deep groove ball bearing
View full technical record →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.
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.