Shafts TRIZ Cases

A tapered plain bushing with a radial slit lowers edge pressure and improves lubrication, enabling compact hydraulic machines to carry heavy loads.

Selective inner-face cutting before drawing helps a hollow shaft reach small inner diameters while limiting deformation and stress concentration.

Indexed teeth and lugs let a walk-behind mower handle lock at multiple heights and fold near the deck for compact vertical storage.

A post-and-prong joint lets eyewear side arms adjust across multiple axes without tools, preserving fit and optical alignment without frame damage.

Ceramic-reinforced aluminum plain bearings improve wear resistance and service life without high-temperature coatings that weaken light alloys.

An integrated magnetic drive and bearing layout shrinks percutaneous blood pumps while improving heat dissipation and shaft-impeller concentricity.

A tank-decoupled fluid loop switches closed-cycle engines between steady and non-steady pressure states for flexible power delivery.

Nested hollow shaft components joined by soldering enable complex internal cooling paths, lower weight, and simpler motor shaft production.

Hot forging and staged heat treatment replace slower conventional routes to cut defects, cost, and cycle time in carbon thrust bearing segments.

Internal axial and radial oil channels use centrifugal force to cool reduction gear pinions, easing bearing loads and extending gearbox life.

A softer outer-ring coating and harder inner-ring coating reduce seizure, wear, and stress-driven delamination in titanium plain bearings.

A movable support plate in the hinge supports the flexible panel when flat and retracts when bent to reduce creases and protect display flatness.

A soft-martensite maraging steel with controlled inclusions improves tensile strength, fatigue life, and surface hardening under cyclic stress.

A sprayed polymer coating lowers bearing capacitance to block leakage current, reduce galvanic corrosion, and extend rolling bearing life.

A four-arc non-circular inner sliding surface improves radial plain bearing load capacity, force transmission, and durability.

An angled combined journal-thrust bearing improves lubricant pressure, cuts friction, and stabilizes turbocharger rotors under dynamic radial and axial loads.

A resin-bonded liner with woven yarns and Al2O3 particles cuts wear and extends plain bearing life, especially against ceramic surfaces.

A pin, retention cap, and cross-pin secure lift assembly pivots against loosening and tampering while preserving smooth height adjustment.

Pre-shaped wrapped layers keep fibre orientation constant on non-cylindrical tubular shafts, improving wall thickness, strength, and manufacturing consistency.

A shallow concave socket with PVD coating balances oil retention and sliding area to lower friction and improve durability.

A convex-concave hinge interface with spring damping reduces drive-surface gap error, improving foldable device rotation accuracy and feel.

An additive flow collar strengthens friction stir welded aluminum-steel transition joints while limiting overheating and weld geometry constraints.

A PVD-coated concave socket with a tuned depth-to-radius ratio lowers friction and keeps coating thickness uniform without oil recesses.

Selective corrosion-resistant regions and sacrificial anodes protect diamond bearing elements from drilling-fluid corrosion and extend thrust-bearing life.

Pumped water forms a lubricating film in the food cutter bearing, cutting friction while avoiding oil contamination and downtime.

A separable pump oil filter replaces only the contaminated filter section while removing debris and moisture to protect bearing lubrication.

A washer between the bearing outer race and seal stabilizes axial loads, preserves lubrication, and limits oil leakage in aircraft shaft assemblies.

A dual-port journal bearing links opposite-side oil feeds through a bore, enabling retrofit standardization across mixed turbine fleets.

Heat-treated electroless nickel phosphorous coating shifts from laminar to columnar grains to cut internal stress and improve fatigue life.

Extrusion replaces casting for polyurethane roller coverings, enabling filler loading while preserving mechanical properties and hydrolysis resistance.

Dispersed Co-Mo-Si Laves particles in a Cu-Sn sliding layer cut abrasion and seizure under high-speed, high-load bearing conditions.

Injection-moulded PBT bearing seals replace metal-rubber assemblies to cut cost and waste while maintaining reliable sealing at high contact speeds.

A rolling-bearing aperture with elastically deforming lamella joints enables smooth adjustment in ultra-high vacuum without lubricants or particle generation.

Sliding foils replace complex air-bearing foil stacks to provide radial support, damping, and high-speed air cushion lift with simpler manufacture.

A slotted conical plain bushing with tapered roller support lowers bearing contact pressure, enabling compact hydraulic machines to carry heavy loads.

A two-layer coating with resin beads and solid lubricants prevents film peeling at the substrate interface while sustaining long-term lubricity.

Superhard sealing surfaces in rotary union bearing assemblies stop fluid leakage without O-rings, cutting friction, heat, and wear.

Controlled shaft roughness and peak height sustain an oil film in large rotating bearings, cutting friction and seizure without coating debris.

Nonlinear sidewalls, tuned pad thickness, and a weighted mass improve flex pad bearing stability and reduce vibration in high-speed compressors.

A pre-tensioned flexible bearing holder replaces compression springs to maintain axial preload and simplify centrifugal separator assembly.

Pole tooth projections and circumferential permeability variation smooth flux changes, cutting rotor eddy losses, heating, and cooling demand.

Glassy metal oxide fills alumina spray-coating pores to keep bearings insulated above 6kV without overheating the workpiece.

An integrated backup bearing catches the rotor axially and radially, saving installation space while preserving magnetic bearing efficiency.

A heat-shrink polymer layer protects non-locating bearing rings and shafts from wear, corrosion, and friction without costly coating steps.

Segmented spring foil retention simplifies micro turbine bearing manufacture while improving low-RPM friction control and high-temperature operation.

A steel-backed, laser-clad sliding layer raises plain bearing load capacity while reducing plastic deformation and preserving corrosion resistance.

An acid-formed reaction layer raises bearing contact friction to stop ring migration without coating thickness, sandblasting, or post-processing.

A laser-deposited layer on a high-elastic-limit metal base boosts plain bearing load capacity while limiting plastic deformation, wear, and friction.

Periodic angled oil grooves balance lubrication in a resin thrust washer to cut torque, wear, torque fluctuation, and oil stain.

A grooved cylindrical liner spreads fastener loads in composite-metal joints, cutting stress concentration, damage risk, and corrosion.