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Shock Absorber Pistons

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PTFE Wear Bands vs. DB L-9 Nano-Composite Coating

Dimension Bond Value Added BenefitsTolerance +/-10 MicronsWear Band Assembly Eliminated Machining of Grooves Eliminated Banding Materials Purchases Eliminated Larger Baring Surface AreaNo Banding to Dislodge, Shift, Split or Tear No Uncontrolled Leak Paths Allows For Shorter Overall Height & Less Metal CostLarger Diameter Valve Face Area for DesignReduced Dead Length Ease of Assembly into Pressure Tube Greater Wear Resistance with Lower FrictionConventional DesignFinished OD Tolerance of +/-50 MicronsRequires Purchase and Inventory of BandingRequires Secondary Operations Banding Can Dislodge or ShiftPotential for Uncontrolled Leak PathsAdvancement of Shock Absorber PistonsPiston Page 2

Shock Absorber Pistons

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Our Unique Solution

Dimension Bond's permanently bonded piston, rigid, band system maintains the precision manufacturing of the piston, of the pressure tube ID and of the overall suspension unit. Since the piston is considered the heart of the suspension unit why compromise using a flexible and inaccurate plastic band?

Advantages

Close tolerance control affords the closest fit, calibrated leakage around the piston, eliminating potential leak paths and/or uncontrolled leaks due to normal flexible bands distorting and wearing.The ability to apply the same technology across all types and sizes of pistons affords economies not available with other conventional band methodologies. The quality of the material applied eliminates fragment contamination - oil tests following one million cycle bench testing have yielded near original oil quality. This is not typical on units employing a conventional band system.100% inspection and close tolerance permits part-to-part and unit-to-unit control of damping forces. No machining cost eliminates the cost to groove the OD of the piston to retain the band.

The Piston Process

100% Laser Inspection of the OD ensures the desired finished dimension is obtained after process curing the band material.100% Laser Inspection of the as-received OD ensures the correct amount of material is applied, thus yielding the finished dimension desired.Apply Permanently Bonded 100% pass-thru gauging of each finished piston to assure the piston meets Form-Fit and Functional requirements prior to packaging. Band material via computer controlled metering.Computer-controlled application of the Permanently Bonded Band material.Product ready for assembly. Fuel Pump Cam Rings

Fuel Pump Components

Shafts

DSC_5786.JPL1030148.JPL1030146.JPL1030147.JPL1030143.JPDSC_6061.JPValves

Valves

Rod Guides

Shock Absorber Rod Guides

Conventional Design DisadvantagesTolerance +/- 40 MicronsPurchase and Inventory of Bushings RequiredBushing Requires Insert and Staking OperationRequires Secondary OperationsBushing can Dislodge or ShiftUncontrolled Leak PathsDimension Bond Value Added BenefitsTolerance +/- 10 micronsSecondary Machinings or Bore Qualifying EliminatedAssembly Operations EliminatedLonger, Larger Bearing Surface AreaBushing Inventory EliminatedNo Split Bushing to DislodgeNo Uncontrolled Leak PathsSimplified Bore Design for Tooling EaseHigher Temperature ResistanceAllows for Tighter Design TolerancesOil Seal Push Out EliminatedYoke Bearing

Yoke Bearings

DSC_6698.JPConventional DesignTolerance of +/-30 MicronsPurchase and Inventory of Bushings RequiredRequires Assembly and Staking of BushingsBushings Can Dislodge or Shift Can Require Secondary OperationsDimension Bond Value Added Benefits Tolerance +/-10 MicronsBushing Inventory EliminatedAssembly Operations EliminatedFull-Contact Bearing Surface Will Not Dislodge or Shift Greater Wear Resistance with Lower Friction Higher Temperature ResistanceElectric Motors

Electric Motors Components

Miniature Parts

Solenoids

Wide selections

Wider Selection of Parts

divider piston

Divider Pistons

Divider Pistons have the same requirements of precision fit and tolerance plus need low friction for the O ring normally fitted. Dimension Bond L9 bonded bearing surface provides divider pistons with precise tolerances and roundness, along with ultra low friction, outwearing aluminum hard anodizing. This dimensional control prevents tilting of the divider piston in the bore.The parallel surface of the divider piston and the tube are preserved because the DB L9 bonded bearing surface exhibits no wear and maintains the close tolerance for the typical 1.25mm cycle test endurance test.Both sintered and solid metal can be DB L9 processed. For sintered metal, a secondary process that seals the porosity is used. This impregnation process provides 100% nitrogen sealing between the two chambers divided by the piston.Shock Absorber PistonsDivider PistonsFuel Pump ComponentsShaftsValvesShock Absorber Rod GuidesYoke BearingsElectric Motors ComponentsMiniature PartsSolenoidsWider Selection of PartsHome PageProcess MachineryTribological ResearchMaterials Specifications and PatentsContact