Shafts TRIZ Cases

A lead-free high-strength brass alloy achieves improved machinability and wear resistance through optimized aluminum, manganese, and silicon content.

Ramped features on superhard bearing elements direct fluid flow to enhance lubrication, reducing wear under high thrust loads in subterranean drilling.

Lithium soap grease composition stabilizes fluid friction between resin slide bearings and shafts.

Thrust bearing structure manages lubricating oil distribution via segmented grooves and tapered surfaces.

Replacing 180-degree bends with dogleg geometry reduces stress risers and prevents cracking in thin foil bearings.

A brushless motor with a six-slot stator and two-pole rotor reduces operational noise through asymmetric magnetic field distribution.

Curved diamond bearings accommodate deflection while a flow restrictor prevents erosion, maintaining component contact.

A three-phase inverter injects variable control current into one output while a constant bias flows through two coils to reduce effective load.

Enlarged coupling portion eliminates dowel pins, reducing assembly complexity and improving NVH performance.

A multilayer sliding bearing element uses a soft-phase-free aluminum binding layer to join the bearing metal.

A rolling bearing cage uses a V-shaped receiving space and angled fluid channels to store and distribute lubricant directly to guide surfaces.

An anti-rotation sleeve rim on the plastic bearing form-locks to the support, reducing mechanical load and wear on the vehicle shackle.

Alumine titanium coating protects landing bearing surfaces from mechanical wear in rotary machines.

A gas bearing spindle uses a segmented retaining ring fit surface to distribute axial forces and maintain non-contact shaft support.

Precise alloying of carbon, chromium, and molybdenum suppresses white structure generation from hydrogen penetration while maintaining machinability.

Integrally fabricated serrated teeth lock composite and metallic substrates, eliminating complex adapters to reduce weight and manufacturing costs.

Cold forming shapes a hollow drive shaft with variable wall thickness, resolving the trade-off between weight reduction and torque transmission stability.

A telescopic mandrel bearing assembly equalizes pressure and absorbs drilling loads in downhole mud motors.

Asymmetric raceway sections enlarge contact areas in high-stress zones to improve load capacity without increasing installation space or assembly complexity.

A lockable ball-and-socket joint uses a gas cartridge and piston to generate clamping force for precise surgical retraction.

An Ag alloy slide overlay controls crystal grain orientation to improve bearing conformability.

An upward-inclined discharge pipe throttles excess lubricant from a wind turbine bearing, preventing uncontrolled leakage and temperature rise.

Segmented axial tubes isolate thermal deformation to prevent bearing misalignment and dust ingress.

Inclined retaining protrusions at partition corners hold needle rollers while enabling core removal from thin resin retainers.

Hollow elastic member and holders regulate spring extension to resolve assembly difficulty and ensure uniform preload application.

A synthetic resin thrust bearing uses specific silicone grease to prevent stick-slip phenomena at sliding interfaces.

An annular dam on the forward ring retains lubricant while axial channels deliver it through radial holes, eliminating stress concentration from alignment pins.

Optimizing carbon content in a Cu-based sintered bearing balances material strength with dimensional accuracy, reducing production costs.

Differentiated circumferential clearances in the retainer direct load onto high-rigidity rim portions, preventing excessive stress on low-rigidity pillar areas.

Journal bearing recessed portions accommodate lubricating oil, reducing stirring resistance and bearing loss in exhaust turbine turbochargers.

Varying angular ball bearing outer diameters increases main spindle stiffness and reduces thermal loads to prevent seizure.

Selective anti-corrosion treatment on turbocharger bearing surfaces and shaft portions prevents rust while preserving clearance precision.

A multipoint contact ball bearing uses a concave inner raceway bottom section with a radius of curvature less than 50% of the ball diameter.

Elastic roller with optimized protruding line dimensions maintains stable friction and contact pressure.

A plastic steering column shaft uses tapered spline teeth to form a deformable counter profile for axial sliding.

Segmented synthetic resin bearing reduces steering noise under heavy loads by distributing force across multiple slidable contact surfaces.

Inclined nozzle hole injects compressed air into an annular recess to cool a rotating bearing spacer.

Composite bearings using self-lubricating thermoplastic olefin resin prevent toner leakage and abnormal noise caused by high friction forces.

Projections with edges intersecting the winding direction suppress peak loads during pivot shaft insertion, preventing surface damage and contamination.

A tapered rotating shaft utilizes capillary force to draw oil into the sleeve gap, ensuring effective lubrication.

Multi-component copper alloy with Mn-Ni silicide phases resolves the trade-off between mechanical wear resistance and high-temperature strength.

Axial and radial oil injection channels deliver lubricant to the hoisting sheave shaft interface, extending service life without disrupting operation.

Segmented bearing groups with dynamic linear actuators maintain rotor stability under disturbances while reducing device complexity.

Thermal expansion of the aluminum alloy holding member increases tightening load against the casing, resolving fixation instability under high temperatures.

Inclined fluid channels in transfer case primary shafts reduce bending stress concentration, extending fatigue life despite minor torsional tradeoffs.

Polyphenol in the surface layer prevents ion-induced hardening, maintaining durability under prolonged electrophotographic loads.

Shape-memory material actuators morph vehicle seat surfaces to adjust dimensions, providing dynamic lateral support during acceleration or turns.

Fan blades extend to support the rotor shaft during bearing replacement, eliminating separate support devices and reducing machine mass.

A segmented drive shaft extension segment with a universal joint and bearing assembly eliminates the need to rebalance the entire vehicle chassis drive system.

Circumferential ring and carbide layers distribute dynamic thrust loads, preventing bearing failure in high-vibration drilling motors.