Imperial BowMet® Flanged Bearings

Part Number: BMFI 12 12

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Details

Inner Diameter0.75
Outer Diameter0.875
Length0.75
Surface StyleSmooth
Flange Thickness0.0625
Flange Diameter1.125

Material Specification

Structure Toughmet ® spinodal bronze with optional lubrication holes/indentations
Max PV – Dry (N/mm² x m/s) 0.6
Max PV – Oiled (N/mm² x m/s) 9.6
Max Static load (N/mm²) 820
Max Dynamic load (N/mm²) 340
Max Sliding speed – Dry (m/s) 3
Max Sliding speed – With Oil (m/s) 10
Operating temperature (°C) -250 to 300
Thermal Conductivity (W/mk) 38
Coefficient of thermal expansion 16.4 x 10-6/°C
Coefficient of friction – Dry 0.25
Coefficient of friction – With Oil 0.04
Recommended shaft finish (Ra) 0.4 max (N5)
Recommended shaft hardness (HRC) 60
Hardness (HRC) 30 min
Ultimate Tensile strength (N/mm²) 860
Yield strength (N/mm²) 725
Elongation (%) 10
Elastic modulus (N/mm²) 144000

Tolerances & Fittings (Imperial)

Min Max Tolerance
Flange Diameter Tolerance1.1051.145
Inside Diameter When Fitted0.75020.7534
Recommended Housing Size0.87470.8755
Overall Length0.720.78
Shaft Diameter0.74880.75

PV Calculation

Values Maximum
Speed
rpm
254647.909 rpm
Load
kg
47.018 kg
PV Factor
N/A
N/mm² x m/s
9.6 N/mm² x m/s

⚠ Maximum PV Factor is 9.6! Reduce speed or load.

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