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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Deep groove ball bearing with a steel shield on ONE side only, 90 mm bore x 140 mm OD x 24 mm wide, normal clearance. The open face lets grease or oil feed straight into the bearing while the shielded face keeps debris out. Sold as 1 piece.
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| MFR / Brand | SKF |
|---|---|
| MPN | 6018-Z |
| GTIN | 7316576621093 |
| Model | 6018 Z |
| Bearing Type | Deep Groove Ball Bearing |
| ID | 90 mm |
| OD | 140 mm |
| Width | 24 mm |
| Material | Steel |
|---|---|
| Base Number | 6018 |
| Industry Terms | Deep groove ball bearing, single shielded bearing, one side shielded ball bearing, 90mm bore bearing, radial ball bearing, gearbox bearing |
| Common Misspellings | 6018ZZ, 6018 2Z, 6018-Z1, SKF6018Z, 6018 RS |
| Application Types | Gearboxes with oil feed, electric motors, pumps, fan and blower shafts, line shafting |
| Bore Shaft Size | 90 mm |
| Mpn Variants | 6018-Z, 6018Z, 6018 Z, 6018-1Z |
| Number Of Rows | 1 |
| Snap Ring Included | No |
| Part Number | 6018-Z |
A single-row deep groove ball bearing, 90 mm bore by 140 mm outside diameter by 24 mm wide, with a pressed steel shield on one side and the other side left open. Deep groove ball bearings carry radial load plus axial load in either direction. The one-shield form lets lubricant reach the bearing from the open face while the shield closes off the side facing the dirty end of the machine.
6: single-row deep groove ball bearing.
0: dimension series 60, the light section for this bore.
18: bore code, 18 x 5 = 90 mm bore.
Z: a single pressed steel shield, on one side only. Two shields are 2Z; contact rubber seals both sides are 2RS1.
No clearance suffix: normal (CN) radial internal clearance.
The single shield is the whole point of this part number. A 6018-Z is not interchangeable with a 6018-2Z: the open face means the bearing depends on the housing to hold grease or supply oil on that side, and it does not retain a factory grease fill on its own the way a double-shielded bearing does. A 6018-2Z in its place closes the bearing off from the gearbox oil that was feeding it, and a 6018-Z in a double-shielded position admits whatever the housing lets in.
A shield is not a seal: it runs with a small gap at the inner ring, costs almost no friction and does not limit speed, and it holds back dry dust and coarse debris rather than water or coolant.
Clearance is normal (CN), which suits a shaft and housing at similar temperatures with a standard interference fit. A 6018/C3 is the greater-clearance variant.
Bore: 90 mm.
Outside diameter: 140 mm.
Width: 24 mm.
Rows: 1.
Closure: one pressed steel shield, one side open (Z).
Internal clearance: normal (CN).
Material: through-hardened bearing steel.
EAN: 7316576621093.
Sold as 1 piece. One shield fitted, one face open. No snap ring, no housing.
Genuine interchanges are same-envelope single-shielded bearings: FAG 6018-Z, NSK 6018Z, NTN 6018Z and Koyo 6018Z. A 6018-2Z (two shields), a 6018-2RS1 (contact seals both sides), a plain open 6018 and a 6018/C3 (greater clearance) are related parts that change lubrication, sealing or fit-up.
Rockwell’s own product page for the Kinetix 6000 is down
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