TRB · NONLINEAR AXIAL MODEL

Non-Linear TRB

The same bearing-to-setting workflow, with load-dependent axial deformation curves and an iterative equilibrium solver. Shaft and housing stiffness remain separate. This reduced model does not solve a full coupled stiffness matrix.

Independent interactive 3D demo · Turkish

Version 1.9.0 · Updated: 30 September 2026

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01 · BearingsComplete single-row products only

Bearing A

Product designation

Shaft seat tolerance[ISO]

Hub · housing bore tolerance[ISO]

Bearing tolerance — verify specification

Seat fits and manufacturing guidance

Bearing B

Product designation

Shaft seat tolerance[ISO]

Hub · housing bore tolerance[ISO]

Bearing tolerance — verify specification

Seat fits and manufacturing guidance

Seat choices are not automatic recommendations. Exact product suffixes lock bearing precision. Other choices only confirm a documented specification; they do not change the selected product. Unsupported or special tolerances are withheld.

02 · Arrangement, loads and geometryLive calculation

Bearing arrangement

External axial force direction

Radial force Fr[kN]

Axial force Fa[kN]

Shaft speed[r/min]

Radial reaction method

Bearing mid-plane span L[mm]

Radial load position x[mm]

Additional bending moment M[kN·mm]

Radial reaction at A[kN]

Radial reaction at B[kN]

03 · Nonlinear axial responseUser-supplied curves · iterative solution

Supply bearing-only pure-axial force–deformation data for cold assembly and operating conditions. Columns: force [kN]; deformation [mm], one pair per line. Start at the physical zero-contact datum 0;0. Do not manufacture an origin for offset data or paste Kzz/tangent stiffness values. No extrapolation or automatic product curves.

Bearing A

Cold assembly curve[kN; mm]

Operating curve[kN; mm]

Data source / conditions

Bearing B

Cold assembly curve[kN; mm]

Operating curve[kN; mm]

Data source / conditions

Shaft axial stiffness[kN/mm]

Housing axial stiffness[kN/mm]

Ks and Kh describe the structural load path only. Use relative A–B interface movement, not peak total deformation. Keep bearing contact compliance out of these values.

Operating tangent compliance Ceq[mm/kN] Operating tangent stiffness Kn[kN/mm]

Force comes from curve deformation and equilibrium. Kn is the local slope after convergence, not a multiplier for total closure. Cold/operating curves are interpolated at equal force during the temperature animation. Radial–axial coupling and temperature-dependent material/contact physics are not solved.

04 · Temperature and expansion

Assembly temperature[°C]

Thermal calculation

Operating shaft temperature[°C]

Operating housing temperature[°C]

Effective shaft length[mm]

Effective housing length[mm]

Shaft expansion coefficient[10⁻⁶/K]

Housing expansion coefficient[10⁻⁶/K]

Ring-expansion correction[mm]

Fit-change correction[mm]

Total thermal setting change[mm]

Follow the load path

Overview shows the whole diagram. Enlarge it to read labels; swipe horizontally when enlarged.

Temperature transition 100%

The slider interpolates temperature, not elapsed time or a thermal simulation. Once calculable, the cold assembly setting stays fixed throughout the transition; it is never redesigned at each frame. External loads stay constant. Thermal extension indicators are magnified and labelled. Section shapes are schematic, not manufacturing geometry.

05 · Construction and design checksNot a target preload/endplay input

A-side compliance share λ[0–1]

Check full load at cold start

Assembly-setting tolerance ±[mm]

Thermal-change uncertainty ±[mm]

Minimum basic rating life[h]

Minimum static safety s₀[—]

Preload review ceiling[kN]

Values update as you edit. Calculations stay in your browser.

Non-Linear TRB

Follow the load path

Results · setting and loads

Engineering results report