AL040812 Flanged Metric Oilite Bearing

Model:  AL040812
Brand:  Oilite
Metric / Imperial:  Metric (mm)
Internal Diameter:  4mm
Outside Diameter:  8mm
Length:  12mm
Flange Outside Diameter:  12mm
Flange Thickness:  2mm
ID tolerance:  Min: 4.004mm Max: 4.016mm (G7)
OD tolerance:  Min: 8.023mm Max: 8.038mm (s7)
Length tolerance:  Min: 11.865mm Max: 12.135mm (js13)
Flange OD tolerance:  Min: 11.865mm Max: 12.135mm (js13)
Flange thickness tolerance:  Min: 1.93mm Max: 2.07mm (js13)
Recommended shaft tolerance:  Min: 3.978mm Max: 3.99mm (f7)
Recommended housing tolerance:  Min: 8mm Max: 8.015mm (H7)
ID when fitted:  Min: 4mm Max: 4.012mm (H7)
Recommended fitting pin tolerance:  Min: 4.004mm Max: 4.009mm (m5)

Alternative or equivalent part numbers: AL0408-12, AMF040812, QFM6-12, FCM6x12, 4/8x12-12x2

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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