Shafts TRIZ Cases

Optimized annular groove depth prevents housing contact under radial load, suppressing creep and wear.

Amorphous carbon forms a sintered skeleton holding graphite particles, resolving elevated temperature strength and wear resistance trade-offs.

A segmented roller bearing applies preloads to half sections, eliminating gaps and increasing rigidity.

Segmenting large Mn-Si needles into smaller particles prevents shaft damage from falling debris, resolving the trade-off between wear and seizure resistance.

A bearing raceway surface texture profile enhances lubricant film thickness and reduces side leakage while lowering near-surface stress concentrations.

A composite-steel hybrid mast design features a fiber-reinforced polymeric composite member adhesively bonded to a steel member with enhanced surface treatments.

Circumferential grooves on shaft elements generate axial force to transmit torque, eliminating backlash noise from alternating torsional loads.

Selective PVD coating on structured areas reduces wear during shaft contact while maintaining manufacturing cost efficiency.

A thrust washer applies a phenolic resin layer to wet friction material surfaces.

A tandem ball bearing assembly applies consistent axial preload to an electric power steering output shaft via a segmented elastic member.

A bearing steel with controlled retained austenite and spherical cementite improves rolling contact fatigue life.

A porous ball bearing assembly retains lubricating media within its matrix to enable continuous operation under severe conditions.

A self-adjusting ladder safety device uses a ratchet mechanism to lock the extension ladder in place on uneven roof surfaces.

Lubricant-ejector fins on a bearing cage extract heated fluid to reduce shearing heat and extend operational life at high speeds.

Specific groove counts avoid electromagnetic vibration orders, suppressing synergy superimposition resonance and improving rotation accuracy.

Composite contact layers on a lightweight ball joint resolve friction wear trade-offs, extending service life under heavy load.

An arch-shaped non-driven axle reduces trailer weight and improves fuel efficiency by lifting without interfering with drive axles.

Polymodal PTFE additives in thermoplastic matrices reduce sliding friction while maintaining wear resistance against matrix weakening.

A mechanically adjustable gap forming component dynamically modifies radial clearance within a fluid dynamic bearing assembly.

Segmented interference fits and self-aligning hydrodynamic patterns maintain high axial stiffness and minimal runout despite tight miniaturization constraints.

Segmented thrust bearing foils increase friction damping areas to absorb vibrations, preventing shaft-to-housing contact in rotating machinery.

Inclined hardness gaps guide rolling elements toward hardened zones, mitigating noise from abrupt load transitions.

A carburisable steel alloy forms hard carbides to create a wear-resistant surface layer on bearing components.

Radiused edges on superhard bearing surfaces eliminate sharp corners that cause wear in subterranean drilling equipment.

A magnetic bearing mechanism supports a rotatable structure to enable low-friction rotation in tidal energy conversion systems.

Axial springs allow pad tilt to increase load capacity while damping materials mitigate negative damping.

Asymmetrical annular permanent magnets generate upward attractive force to support rotor weight in thrust magnetic bearings.

A hydrostatic bearing integrates a permanent magnet to constrain the rotating shaft radially within a motor housing.

A smart bushing assembly uses shape-memory material to expand within a washer opening for secure interference fit.

An oleophilic adhesion promoter layer bonds to an elemental-iron-free stainless steel bearing surface to retain lubricant.

Novel bearing steel composition with specific alloying elements enhances rolling contact fatigue performance, addressing abrasive wear resistance challenges.

A pre-stressed rolling bearing uses a segmented element to generate controlled friction torque for steering columns.

Segmented land portions on a floating bush bearing suppress non-synchronous oscillation by controlling gap distribution and lubricant oil flow.

Hot forming martensitic steel below aluminum nitride solubility temperatures prevents crack-initiating precipitates and reduces fatigue life dispersion.

Hybrid magnetic bearings use radial windings to boost flux density from non-rare earth magnets, resolving cost versus strength trade-offs.

A spheroidal joint with a lubricious liner reduces friction forces that impede tuned mass damper effectiveness.

A roller thrust bearing uses segmented cage elements with varying metal plate thicknesses to reduce contact pressure and prevent wear.

Integrated scraper guides leaking lubricant to a collection device via gravitational force.

Aerodynamic foil bearing uses a viscoelastic sheet to absorb sub-synchronous frequencies and enhance rotor stability.

A synthetic resin bearing retainer features guide surfaces with controlled roughness and chamfers to maintain lubrication integrity.

Optimized pocket dimensions resolve wear versus ball count trade-offs to extend bearing durability.