Shafts TRIZ Cases

A composite shaft joint uses a serrated spline interface to transfer torque loads between the fiber reinforced material and metallic end fittings.

Integrating annular cooling channels into the housing structure removes heat from grease-packed bearings without stripping lubrication or adding system weight.

Elastic deformation of the bearing shell allows simultaneous boring of sliding surfaces and exposed regions, eliminating chip scratches from axial offset.

Helical channels in the ring bore supply grease to load-bearing areas, eliminating costly manual disassembly for maintenance.

Steel-backed aluminum alloy sliding bearing with embedded hard particles resolves thermal conductivity versus mechanical strength trade-offs.

A sliding member combines a resin overlay with a soft metallic layer to embed foreign matter, resolving the trade-off between low friction and conformability.

Carbon particles in the resin layer of a sliding bearing dissipate static electricity, preventing electrical discharge damage and maintaining insulation.

A fluid dynamic bearing uses a cup-shaped lower thrust washer to maintain radial stiffness while reducing axial shaft dimensions.

Single-piece elastic bearing structure accommodates drive shaft movements without separate springs, reducing assembly complexity.

Segmented foils with fixed extended portions create uniform curvature and pressure communication paths to prevent negative pressure in thrust bearings.

Curved arcuate surfaces on the inertia ring prevent self-locking and fretting, ensuring stable rotor support when primary bearings fail.

A magnetic bearing control device uses a filter unit with multiple notch filters to manage rotational speed signals.

Induction heating expands the ball stud to adjust resin housing clearance.

Asymmetric bracket opening and rubber bushing correct unequal universal joint angles, reducing driveline stress and extending component life.

Spherical hard particles reduce stress concentration points, preventing particle loss from the plastic matrix while maintaining wear resistance.

An elastically deformable cage structure enables lateral rotor insertion, eliminating complex pivot alignment during watch motor assembly.

Friction surfacing deposits dense coatings on journal bearings and valve assemblies, resolving wear and oil loss issues.

An enveloping layer-coated slide bearing uses injection molding to fuse a thermoplastic elastomer, eliminating sandblasting and adhesive steps.

Introducing geometric offset between coaxially arranged annular surfaces increases starting torque, preventing uncontrolled rotation under severe cooling flows.

A bearing housing oil scupper system recovers leaked lubricant via a dedicated recuperation passage.

Segmented tolerance ring eliminates circumferential gaps between tabs to reduce mass imbalance and eccentricity in disc drive actuator arms.

Surface features on the insert create hydrodynamic pressure to reduce friction and wear in vertical HVAC compressors.

Dual-end mounting prevents flexing while axial and radial passages supply lubricant.

A block copolymer bearing material combines hard polyamide-imide with soft polydimethylsiloxane domains to create a unified structural overlay.

Linear roller motion forms precise ball raceways in telescopic steering shafts, reducing fabrication costs and cycle times.

Polycrystalline diamond compacts provide low-friction sliding interfaces that withstand extreme loads and lateral movements without lubrication.

A medical instrument holder uses spring-loaded locking elements to clamp a joint ball within a rigid bearing shell for secure positioning.

Phosphite ester additives in grease compositions maintain effective lubrication to prevent fretting wear at low temperatures.

Segmenting the connection with a sliding pin and spherical bearing reduces material wear while allowing pivoting motion.

Homogeneous aluminum bushes and reduced collar cross-sections prevent axial wandering caused by thermal mismatch in piston pump camshaft drives.

An acetal polymer thrust bearing eliminates lubrication needs in aircraft cargo rollers, reducing maintenance costs while preserving swivel functionality.

A thrust bearing top foil features an inner circumferential edge-side thin part that bends to maintain a gap with the back foil.

Conical bearing pump seals prevent fluid leakage under shock by creating a pressure counterbalance that opposes outward flow.

Porous landing bearing surfaces absorb base oil to eliminate leakage, solving high sliding power wear in magnetic bearing assemblies.

A bearing holder scrapes excess lubricant from rolling bodies using integrated scraping portions and inclined surfaces to return oil to storage.

A bearing inner ring uses an annular gutter to equalize oil flow across seal plate passages, reducing thermally induced stresses.

An aspherical surface on the ball stud enables injection molding of the seat, eliminating complex assembly steps and reducing rotational torque.

Unequal tilting pad distribution on dual support disks enables bi-directional axial thrust capacity in gas turbine bearings.

Adjustable conical bearing bodies eliminate separate axial bearings, reducing complexity while maintaining reliable support under varying wind turbine loads.

Precipitated silicides and chromium particles reinforce the copper-tin matrix, resolving the trade-off between hardness and cold formability.

A second step bearing generates a force on the first thrust bearing to damp axial vibrations in rotary machines.

Segmented radial grooves with partition walls prevent foreign matter entry while maintaining lubrication efficiency in turbochargers.

Uniform ball bearing requirements across three races improve load distribution and erosion resilience in high pressure well service applications.

A sleeve inserts into a hollow tube end to create a thick-walled connection section through joint reshaping.

Submerging the bearing contact zone in lubricant eliminates dry metal-to-metal start-up wear, extending component reliability in wind turbines.

Incorporating titanium into blackened bearing coatings doubles hardness and halves sliding wear compared to conventional bluing.

Oxide layer on steel ball pins prevents nitriding damage, improving fatigue strength and corrosion resistance under high static loads.

Separate plastic bearing locations compensate for manufacturing tolerances and reduce noise emission through damping effects.

Rotated quadrupole fields stabilize diamagnetic elements, resolving insufficient centering forces in magnetic levitation systems.

Removably interconnected retainer components capture a steel thrust bearing to ensure proper fit and rotation within a hydrostatic drive motor.