Metric BowMet® Plain Bearings

Part Number: BMP 80 85 70

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Details

Inner Diameter80
Outer Diameter85
Length70
Surface StyleSmooth

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 (Metric)

Min Max Tolerance
Inside Diameter When Fitted8080.074H9
Recommended Housing Size8585.035H7
Overall Length69.7570.25
Shaft Diameter79.92479.97f8

PV Calculation

Values Maximum
Speed
rpm
2387.324 rpm
Load
kg
468093.782 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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