Page 67 - IGUS Bearing

iglidur | Calculation
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igus formulae
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Short cuts and formulae for polymer plain bearings
Surface pressure F = Load [N]

Radial bearing: Thrust bearing: F = Friction force [N]
R
F p = F d1 = Inner diameter of the bearing [mm]

p =
d1 · b1 (d2 - d1 ) · π b1 = Bearing length [mm]
2
2
4 d2 = Outer diameter of the bearing [mm]
p = Surface pressure [N/mm ]
2
Surface Speed v = Surface Speed [m/s]
Rotational movement: n = Revolutions per minute
[ ]
v = n · d1 · π m ß = Angle [°]

60 · 1,000 s f = Frequency in Hertz
K1, K2 = Constant for heat dissipation
Pivoting movement: (K1 = 0.5 K2 = 0.042) [N]
m
v = d1 · π · 2 · ß f [ ] s = Bearing wall thickness [mm]
·
360 1,000 s μ = Coefficient of friction
λs = Thermal conductivity of the shaft
λk = Thermal conductivity of the bearing
pv value ΔT = (T - T )
u
a
+
pv = ( [K1 · π · k · ∆T ] [K2 · π · s · ∆T ] ) -3 T = Ambient temperature [°C]
· 10

u
perm. µ · s µ · b1 · 2 T = Max. Application temperature [°C]
a
Friction force
F = µ · F
R

Quicklinks

iglidur standards:
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more than 1,900 parts from stock

Choice of 17 standard iglidur materials
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For shaft sizes up to 50mm according to

ISO 3547-1

Lubrication and maintenance-free

Calculate service life online

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®
examples and many more for your chosen igus product.
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