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Technical specifications
Catalogue washers

Washer DIN 988

Description
DIN 988 calibrated washers used to adjust clearances and compensate tolerances on shafts and bearings. Available in multiple diameters and thicknesses from 0.1 mm, they allow precise measurements to be achieved by combining several parts. Manufactured to tight tolerances in steel or stainless steel, they are ideal for precision mechanical assemblies.
Assembly
DIN 988 washers are mounted between the bearing and its housing or between shaft components to adjust clearances. They should be laid flat, clean and well aligned, stacking several if a specific thickness is required. No special tools are required and it is only necessary to ensure that the shaft and surfaces are free of burrs to avoid premature wear.
Materials
Materials available for DIN 988 type washers include carbon steel and A2/A4 stainless steel, plus options in AISI 1010, 1085, 52100, 304, 316 and 420. There are also technical versions in plastics (PA, POM, PTFE) or elastomers. The usual finishes include galvanizing, zinc plating, phosphating, blueing and special anti-corrosion coatings.
Technical data
  • 6 – 200 mm
  • Steel or stainless steel
ITEMd1d2h1
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PS-110X140X3.51101403.5
PS-120X150X0.11201500.1
PS-120X150X0.151201500.15
PS-120X150X0.21201500.2
PS-120X150X0.251201500.25
PS-120X150X0.31201500.3
PS-120X150X0.51201500.5
PS-120X150X11201501
PS-120X150X1.21201501.2
PS-120X150X1.51201501.5
PS-120X150X21201502
PS-120X150X3.51201503.5
PS-130X160X0.11301600.1
PS-130X160X0.151301600.15
PS-130X160X0.21301600.2
PS-130X160X0.251301600.25
PS-130X160X0.31301600.3
PS-130X160X0.51301600.5
PS-130X160X11301601
PS-130X160X1.21301601.2
PS-130X160X1.51301601.5
PS-130X160X21301602
PS-130X160X3.51301603.5
PS-140X170X0.11401700.1
PS-140X170X0.151401700.15
PS-140X170X0.21401700.2
PS-140X170X0.251401700.25
PS-140X170X0.31401700.3
PS-140X170X0.51401700.5
PS-140X170X11401701
PS-140X170X1.21401701.2
PS-140X170X1.51401701.5
PS-140X170X21401702
PS-140X170X3.51401703.5
PS-150X180X0.11501800.1
PS-150X180X0.151501800.15
PS-150X180X0.21501800.2
PS-150X180X0.251501800.25
PS-150X180X0.31501800.3
PS-150X180X0.51501800.5
PS-150X180X11501801
PS-150X180X1.21501801.2
PS-150X180X1.51501801.5
PS-150X180X21501802
PS-150X180X3.51501803.5
PS-160X190X0.11601900.1
PS-160X190X0.151601900.15
PS-160X190X0.21601900.2
PS-160X190X0.251601900.25
PS-160X190X0.31601900.3
PS-160X190X0.51601900.5
PS-160X190X11601901
PS-160X190X1.21601901.2
PS-160X190X1.51601901.5
PS-160X190X21601902
PS-160X190X3.51601903.5
PS-170X200X0.11702000.1
PS-170X200X0.151702000.15
PS-170X200X0.21702000.2
PS-170X200X0.251702000.25
PS-170X200X0.31702000.3
PS-170X200X0.51702000.5
PS-170X200X11702001
PS-170X200X1.21702001.2
PS-170X200X1.51702001.5
PS-170X200X21702002
PS-170X200X3.51702003.5
Technical drawing and installation parameters of the DIN 988 shim washers
This technical diagram defines the dimensions and geometric variables that are essential for the correct selection and installation of the DIN 988 shim washer, used to adjust clearances and compensate tolerances on shafts and bearings. It shows the critical dimensions linked to the specification tables, such as the inside diameter (d1), the outside diameter (d2) and the calibrated thickness (h1), available from one tenth of a millimetre. Complying with these dimensions ensures the precise setting of the axial clearance, allows the required dimension to be reached by combining several thicknesses and maintains a flat and uniform support of the assembly.
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