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AM121820 Plain Metric Oilite Bearing

AM121820 Plain Metric Oilite Bearing
Our Price:  £2.18(Exc. 20% VAT)(£2.62 Inc. VAT)

Weight:  17g


In stock, immediate despatch  


Special Offer:  Discounts of 5%, 10% and 20% are available when you order £50.00, £100.00 and £200.00 or more of selected products.

Model:  AM121820
Brand:  Oilite
Metric / Imperial:  Metric (mm)
Internal Diameter:  12mm
Outside Diameter:  18mm
Length:  20mm
ID tolerance:  Min: 12.006mm Max: 12.024mm (G7)
OD tolerance:  Min: 18.028mm Max: 18.046mm (s7)
Length tolerance:  Min: 19.835mm Max: 20.165mm (js13)
Recommended shaft tolerance:  Min: 11.966mm Max: 11.984mm (f7)
Recommended housing tolerance:  Min: 18mm Max: 18.018mm (H7)
ID when fitted:  Min: 12mm Max: 12.018mm (H7)
Recommended fitting pin tolerance:  Min: 12.007mm Max: 12.015mm (m5)

Alternative or equivalent part numbers: AM1218-20, AMC121820, CM22X20, CT261X20, QM22-20, 12/18x20

Standard Oilite(tm) Material is made from Oil impregnated sintered bronze.

The chemical composition for standard Oilite material is within the following:

Copper: Balance

Iron: 1% Max

Carbon: 3% Max

Tin: 9-11%

Max. Other Elements. 2%

Open Porosity Minimum: 20-27%

Minimum Oil Content: 18-24%

Minimum Radial Crushing Strength K: 120-180 N/mm2

Nominal Density: 6-7g/cc

Maximum static load: 35-65 N/mm2

Maximum dynamic load: 10-18 N/mm2

Maximum velocity: 5-6 m/s

Maximum PV factor*: 1.8

*PV factor = Pressure (N/mm2) x bearing surface velocity (m/s).

Pressure is calculated as load (N) / Projected area (internal diameter x Length) (mm)


There are several more specific specs for specific parts which fall within the above specification. please

contact us for more details if required.



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