Shafts TRIZ Cases

A toroidal seal with a grease intake opening lets ball bearings be relubricated in place, cutting maintenance time while blocking debris.

Integrated interior and exterior flexure blades deliver two-axis rotation without bearings, reducing wear, cost, and manufacturing complexity.

An axial recess linked to an outer air escape unit creates an exhaust path that releases hot air, reducing heat, noise, and vibration.

A spacer insert in the journal groove separates top foil ends to tune shaft pre-load, balancing spring stiffness, wear, and assembly efficiency.

Claw engagement and preload keep the back foil seated before shaft insertion, preserving radial foil bearing load capacity and dynamics.

An ester-based oil with alkyl (meth)acrylate polymer maintains pore infiltration and lubricity across severe temperature swings to reduce bearing squeal.

An interference-fit collar restrains outer race expansion to stop ball joint pull-out under axial load while keeping operating torque stable.

A concentric inner and outer aircraft shaft uses a projectile-sized gap and sleeves to preserve power transfer after ballistic damage.

A continuous bearing contour and circumferential squeeze oil film help turbocharger slide bearings carry radial and axial loads with lower friction.

Forging a recessed and elongated inner hole creates a one-piece steering shaft that cuts weight, avoids deep drilling, and improves torque transmission reliability.

Multiple bearing rollers convert shaft friction to rolling contact, enabling stable high-speed bur resection with less axial displacement.

Precise Rz and Sm control on the charging roll surface stabilizes photoconductor discharge and reduces image unevenness during printing.

Curved superhard bearing surfaces maintain rotor-stator contact during shaft deflection, reducing uneven loading and axial misalignment.

Rotor shear heating keeps refrigerant in a gas phase, allowing porous gas bearings to sustain load capacity across liquid and gas operation.

A combined radial-axial bearing uses one flooded lubrication chamber to cut wind turbine bearing complexity, space, cost, and maintenance.

A protruding seal structure expands housing contact area and maintains fastening force to prevent displacement and oil leakage in fluid dynamic bearings.

Using higher-carbon steel and limiting hardness to 58 HRC or less, this raceway design extends slewing bearing life with lower hardening energy.

A nested rotatable button lock keeps a flex-head wrench at set angles while shielding the mechanism from dirt and simplifying manufacture.

A flexible drive connection separates the motor and gear unit to fit tight steering column spaces while preserving adjustability and crash energy absorption.

Multiple injection gates improve molding speed, while small resin reservoirs control fiber orientation and strengthen bearing cage welds.

Alternating charged polyelectrolyte layers cut startup bearing contact, wear, and heat before hydrodynamic lubrication takes over.

Needle-shaped precipitates in an Al bearing alloy preserve high-temperature strength and resist sulfur-driven corrosion without costly Ag additives.

A single monitored bearing triggers equal grease delivery to multiple bearings, cutting sensor count, manual greasing, and maintenance cost.

Multiple axially arranged bushes spread rack shaft load in a steering gearbox, cutting surface pressure and limiting shaft displacement.

Protective sleeves, bushings, and damping elements help hybrid bearings resist fracture, wear, and axial shock in fluid film use.

Compression-molded Fe-Ni-Mo powder and plastic-worked raceways suppress coarse pores, cutting bearing ring cost without sacrificing fatigue life.

Ag in the bearing alloy forms Ag2S on the sliding surface to cut adhesion and friction while preserving hardness through strengthening.

Controlling Rz and Sm on the charging roll surface layer suppresses local discharge and image unevenness for more uniform print density.

Solid-solution strengthening with P or Mn raises brass hardness while limiting particle and oxide-film damage on sliding surfaces.

A nickel diffusion barrier between steel backing and aluminum lining blocks brittle Fe-Al phases during 400°C+ heat treatment.

Threaded adjusting screws with clamp locking set plain bearing clearance quickly and prevent loosening without repeated shim changes.

A resin reservoir near the weld line drives forcible resin flow and fiber alignment, improving bearing cage weld strength and durability.

Temperature feedback and pressurized actuation rebalance thrust between main and auxiliary turbine bearing discs to prevent misalignment.

Embedded tin, zinc, or copper releases under frictional pressure to fill bearing surface voids, reduce wear, and extend service life.

Angled communicating and non-communicating oil grooves balance oil distribution in resin thrust washers to cut torque, wear, and oil stain.

A splined positioning tool sets lubricant dam insert depth accurately on a drive shaft, improving lubrication and preventing damage.

Controlled resin-layer roughness improves oil spreading and retention in engine sliding members, helping prevent wear and seizure under high pressure.

A downstream expansion portion stiffens the top foil against radial bending, preserving the lubricating film and thrust load support.

A continuous multi-surface bearing contour uses integrated lubrication wedges to carry radial and axial loads with lower friction, noise, and complexity.

Controlled anisotropic thermal expansion in a resin sliding layer helps journal bearings resist startup cracks and interface shear failure.

Controlled anisotropic expansion in a resin thrust bearing sliding layer helps prevent surface cracks and interface shear at high speed.

An internal oil guide channel feeds lubricant to the inner ring-flange interface, cutting friction, wear, and compressor power loss.

A plastic sleeve with a post-formed radial leg lets joint sealing bellows assemble without pre-expansion while reducing friction and extra parts.

Optimized oil-film thickness-to-length ratios let a dual-film damper match higher-layer damping while limiting wear, deflection, and oil leaks.

A Cu-Ni-Sn-P-C sintered bearing cuts nickel and tin cost while resisting corrosion and abrasion in sulfur- and acid-containing fuels.

Elastic fixing tongues clamp a steering bearing holding ring onto a cylindrical shaft, eliminating grooves while simplifying assembly and cost.

Localized protrusions create conductive contact points while the sliding layer preserves low friction, extending bearing life and reducing noise.

Uniform cage pocket geometry keeps ball contact at the equator, stabilizing rotation and reducing noise in outer-ring guide angular ball bearings.

An aluminum interlayer and sliding layer protect iron-alloy bushings from corrosion and delamination while preserving load capacity.

Blended rigid and leaf spring blades with cross flexures raise vertical stiffness while allowing longer stroke with lower stress and fatigue.