Thrust plain bearing | Online Calculator

Bearing Calculators







Thrust Plain Bearings

In this calculation, a thrust plain bearing with circulating lubrication and a steel-babbit friction pair is considered. The calculation was carried out based on the methodology for calculating marine plain bearings repeatedly confirmed by practical results.

The bearing design provides for 8 thrust pads covering 80% of the shaft crest area.

To perform the calculations, it is necessary to specify the diameter of the shaft neck d, diameter of the shaft crest D, axial load F and speed of rotation n. Depending on the size of the shaft crest, the axial clearance assumed to be between 1.2 and 2.5 mm in this calculation.

According to the results of calculations, the power P generated on the bearing support, and oil wedge thickness Y that should exceed the maximum deflection of the shaft crest under load, are determined.

Thrust plain bearings calculation
Thrust plain bearings heat calculation

INITIAL DATA

F - Axial load;


n - Shaft speed;


d - Shaft journal diameter;


D - Shaft flange diameter;


μ - Dynamic oil viscosity at service temperature.

RESULTS DATA

P - Power, released during bearing operation;


y - Oil wedge.

Axial load (F)

Shaft speed (n)

Shaft journal diameter (d)

Shaft flange diameter (D)

Dynamic viscosity (μ)

Output power (P)

Oil wedge (y)

BASIC FORMULAS

Bearing calculation is performed using complex systems of parametric equations.

INITIAL DATA

F - Axial load;


n - Shaft speed;


d - Shaft journal diameter;


D - Shaft flange diameter;


μ - Dynamic oil viscosity at service temperature.

RESULTS DATA

P - Power, released during bearing operation;


y - Oil wedge.

DYNAMIC OIL VISCOSITY

Oil

Viscosity at 55°C (131°F)

Pa*s (lb*s/ft²)

SAE 15W-40

0.045 (0.00100)

SAE 10W-60

0.074 (0.00155)

SAE 0W-30

0.032 (0.00067)

OTHER CALCULATORS

AREA MOMENTS OF INERTIA
BEAM CALCULATORS
TORSION OF BARS
CIRCULAR FLAT PLATES
BUCKLING
ELASTIC CONTACT
IMPACT LOADS
NATURAL FREQUENCIES
PRESSURED SHELLS
FLUID DYNAMIC
COMPOSITES
SPRINGS
THREAD CONNECTIONS
SHAFT CONNECTIONS
BEARINGS
DRIVES
FATIGUE
HEAT TRANSFER