THRUST SHIMS
& WASHERS
shims
synchronisation
DIAGLIDE THRUST SHIMS & WASHERS offer an extremely broad spectrum of thrust shims, washers and compensation discs.
The DIAGLIDE THRUST SHIMS are used as bearing surfaces for all types of rotating applications where a cost-effective component assumes the function of a slide bearing surface in lubricated and non-lubricated application. Axial movements along a shaft can therefore be set in precise tolerances.
DIAGLIDE THRUST WASHERS are compensation discs and washers, with which the axis distances and longitudinal tolerances in axle and drive shafts, as well as in any narrow-tolerance longitudinal size, can be precisely adjusted.
The washers and compensation discs can be precisely worn to a few μ ( < 5 μ ). The usual applications are axle assemblies, transmissions (shafts), pump wheels and shafts and engines. Different thicknesses of the same types can be produced, and then can be used in sets with a defined, set clearance and longitudinal compensation functions.
Frequent use is also in the the synchronisation of two assemblies or machine bodies. The substrates are available in various steel and light metal materials or, for example, in copper and zinc. Special materials are also available upon request. Anti-magnetic, conductive or insulating functions can also be produced.
Single parts and series parts can be manufactured in short lead times thanks to the flexible production.
THE MOST IMPORTANT BENEFITS
WHEN USING
THRUST SHIMS & WASHERS WITH DIAGLIDE COATING:
+ The all-rounder for tribologic systems
+ Reduces friction coefficient and wear
+ High lubricant film affinity
+ Optimum gliding behaviour
+ Wear-resistant friction pairing
+ Permanent corrosion protection
+ Adjustable hardness (400 – 1,100 HV)
+ Increased safety factor
+ Cost reductions
+ Easy to use
+ Adjustable friction coefficients
+ Precise size tolerances
+ Available for single parts and series
+ Short lead times
+ Very flexible production
Schematic representation of a wear-resistant DIAGLIDE system consisting of dispersion layer and counterpart of the friction pairing
COATINGS FOR FRICTION COEFFICIENT REDUCTION IN COMBINATION WITH CORROSION AND WEAR PROTECTION
TEXTILE MACHINES
& SPINNING
DIAGLIDE coatings for wear parts
CONVEYOR TECHNOLOGY
& PUMPS
DIAGLIDE
THRUST SHIMS
as shims
AUTOMOTIVE & Engine Technology
DIAGLIDE THRUST WASHER AND SHIMS for sliding, friction coefficient-reducing applications in transmissions and axle systems
TOOL
& MOULD CONSTRUCTION
DIAGLIDE coatings for tools and moulds
MOTOR
& RACING
SPORT
DIAGLIDE coatings for components of injection systems
AEROSPACE
&
AVIATION
DIAGLIDE coatings for aluminium, magnesium and titanium components
APPLICATION
In numerous applications, it is necessary to move metallic components on top of each other without them being subject to noticeable wear during use. Depending on the area of application, such component or material contact can take place with or without additional lubricant.
Typical examples of components are rotors and plungers for oil production, drive components for combustion engines, gearboxes or compressors, hydraulic cylinders or hydraulic components, pumps, pressure cylinders or components in textile machines. In most cases, the requirements go beyond a high wear resistance paired with low friction, in that, in particular, a high corrosion resistance of the surface is also needed. In addition, applied DIAGLIDE® coating systems must have exceptionally good adhesion to the base material and, in the case of cost-intensive components, allow damaged or worn surfaces to be repaired.
Wear-resistant coatings with a high degree of widespread use are mainly those based on chromium and nickel or nickel alloys, which are used for DIAGLIDE®-coatings. Both materials have a high to very high basic hardness. Hard materials withstand the mechanical stresses caused by pressure and/or friction. This avoids the break-out and break-off of coating fragments.
If, on the other hand, such break-outs and break-offs occur and get caught between moving components, they act as abrasive particles and increase the damage to the surface due to wear.
Another possibility for reducing wear is the incorporation of friction-reducing solid lubricants – so-called dispersion layers. Proven solid lubricants include, for example, PTFE (polytetrafluoroethylene – Teflon), hexagonal boron nitride, but also graphite and MoS2. As a matrix material for embedding solid lubricants, electroplated and electroless nickel as well as nickel-phosphorous alloys offer ideal conditions for producing surfaces with different properties tailored to the respective application. The hardness of the layers can be adjusted in a range between about 450 HV and about 1,100 HV. The corrosion resistance of the coatings varies depending on the selected phosphorus content.”
PARAMETERS FOR WEAR / CORROSION RESISTANCE WITH DIAGLIDE COATINGS
The properties of metal workpieces are improved
by applying DIAGLIDE® coatings in terms of wear and corrosion. . Depending on the application, different variants from the
group of composite and dispersion coatings are available.
| Variants byelectroless deposition | Variants by electrolytic deposition |
|
Nickel + nickel-phosphorus dispersion |
Nickel + nickel dispersion |
| – | Nickel + chromium (chromium electrolytic) |
| Nickel-phosphorus + nickel-phosphorus dispersion | Nickel + nickel-phosphorus dispersion |
| Nickel + chromium | Nickel-phosphorus + nickel-phosphorus dispersion |
| Nickel-phosphorus + chromium | – |
The alloy variant nickel-phosphoruscan be deposited bothelectrolessly/external current-free ( > high contour accuracy, > low deposition speed) and electrolytically ( > low contour accuracy, > high deposition speed).
Electrolessly deposited nickel is preferred for layer thicknesses below 30 μm (0.03 mm) due to the low deposition speed. Electrolytically deposited nickel is suitable for layers up to several millimetres thick.For dispersion coatings based on nickel, the following variants are available:
| Characteristic | Electrolessly deposited | Electroplated |
|
Deposition rate |
0,17 μm/min – 0,35 μm/min |
3 μm/min – 10 μm/min |
|
Material |
Nickel-phosphorous alloy with 2 % to 12 % phosphorous |
Nickel + nickel-phosphorous alloy with 2 % to 12 % phosphorous |
|
Layer thicknesses |
up to 30 μm (in exceptional cases up to 100 μm) |
50 μm– 200 μm (up to 1000 μm on request) |
|
Dispersion material |
Diamond, silicon carbide (SiC),. hex. boron nitride (hBN), boron carbide (B4C), PTFE; nanoparticles (< 1 μm) |
Diamond, silicon carbide (SiC), hex. boron nitride (hBN), boron carbide(B4C) |
|
Particle sizes |
1-3 Nano / μm or specialised applications up to 50 μm) |
1-3 Nano / μm |
|
Contour accuracy |
High |
Medium-high |
PRODUCT
SYSTEM SHEET
PARAMETERS FOR WEAR / CORROSION RESISTANCE WITH DIAGLIDE COATINGS
The properties of metal workpieces are improved
by applying DIAGLIDE® coatings in terms of wear and corrosion. . Depending on the application, different variants from the
group of composite and dispersion coatings are available.
| Variants byelectroless deposition | Variants by electrolytic deposition |
|
Nickel + nickel-phosphorus dispersion |
Nickel + nickel dispersion |
| – | Nickel + chromium (chromium electrolytic) |
| Nickel-phosphorus + nickel-phosphorus dispersion | Nickel + nickel-phosphorus dispersion |
| Nickel + chromium | Nickel-phosphorus + nickel-phosphorus dispersion |
| Nickel-phosphorus + chromium | – |
The alloy variant nickel-phosphoruscan be deposited bothelectrolessly/external current-free ( > high contour accuracy, > low deposition speed) and electrolytically ( > low contour accuracy, > high deposition speed).
Electrolessly deposited nickel is preferred for layer thicknesses below 30 μm (0.03 mm) due to the low deposition speed. Electrolytically deposited nickel is suitable for layers up to several millimetres thick.For dispersion coatings based on nickel, the following variants are available:
| Characteristic | Electrolessly deposited | Electroplated |
|
Deposition rate |
0,17 μm/min – 0,35 μm/min |
3 μm/min – 10 μm/min |
|
Material |
Nickel-phosphorous alloy with 2 % to 12 % phosphorous |
Nickel + nickel-phosphorous alloy with 2 % to 12 % phosphorous |
|
Layer thicknesses |
up to 30 μm (in exceptional cases up to 100 μm) |
50 μm– 200 μm (up to 1000 μm on request) |
|
Dispersion material |
Diamond, silicon carbide (SiC),. hex. boron nitride (hBN), boron carbide (B4C), PTFE; nanoparticles (< 1 μm) |
Diamond, silicon carbide (SiC), hex. boron nitride (hBN), boron carbide(B4C) |
|
Particle sizes |
1-3 Nano / μm or specialised applications up to 50 μm) |
1-3 Nano / μm |
|
Contour accuracy |
High |
Medium-high |
PRODUCT
SYSTEM SHEET
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