Home page of the microscope service parts, repair and spare parts online catalog - Sermik-Oplatek Mikroskopservice Dresden f.n.n.Z

Description of this part for the microscope.

is fastened to the condenser holder with two screws.

Because the rack of the condenser height adjustment mechanism is made of plastic in this microscope model, it is a part that gets damaged very often.

Description of this part for the microscope.

marked AB4317)
- steel shaft
- plastic pinion (sometimes simply called a gear) fitted onto this shaft

It is this rotary movement of the knob that is transferred to the toothed rack (https://www.microscopeparts.eu/part/92011), which in turn produces the vertical up and down movement of the condenser (the focusing of the microscope condenser).

Because both the knob and the pinion are made of plastic in this microscope model, it is a part that gets damaged very often.

Description of this part for the microscope.

together with the nosepiece carries the manufacturer's catalogue number AW019700 and the name "CX31 arm ass'y". I am not offering the complete microscope arm here. What I show and offer here is only the nosepiece itself (the rotating turret disc), together with the click-stop latch spring. The part offered here should be treated as a service part used to repair the nosepiece when it gets damaged.

On the arm from which this particular nosepiece was removed, the manufacturer placed the casting number AD7858 - but I do not know whether this is the permanent number of this component or merely the number of the mould in one particular factory. Based on my experience with other, similarly marked Olympus parts, I lean towards it being the permanent numbering of this component.

The set offered here consists of:
- central screw together with bearing balls - it forms the rotation axis of the nosepiece and fastens it to the arm casting
- silver-plated brass turret disc with four objective seats with RMS thread
- set of bearing balls around the turret disc
- thin brass sliding washer
- click-stop latch spring with ball - for stopping the nosepiece in a given position while turning it
- rubber grip ring around the nosepiece that makes it easier to hold

Important: this nosepiece does not fit the polarizing version of the Olympus CX31 microscope, that is the CX31-P. The nosepiece in Olympus CX31-P microscopes allows the objectives to be centred, and the one shown here does not have that function.

Description of this part for the microscope.

the vertical movement (raising / lowering) of the microscope stage, that is the mechanism responsible for setting the sharpness (focusing). It is located behind the microscope stage, on the inner side of the microscope arm. This cover is screwed to the housing with three screws (they are included in the set I offer here). These screws have their own Olympus part number: CUTB3X8SA, which is very interesting, because the cover itself has no commercial part number of its own.

In the service manual for the Olympus CX31 / CX41 microscopes the manufacturer uses the official name "guide cover" for this part. The number AD7856 is placed on the part itself. Based on my experience with other, similarly marked Olympus parts, I believe this is the permanent numbering of this component and that the number can be used for identification.

The part is so delicate that it could even be described as "very thick foil". As a result, it is highly susceptible to mechanical damage.