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.

however, no light source is included in the set.
- A stage with top mounting or with side guide rails can be installed on this base
- There is a rack on the stand

This heavy, stable stand is often used for applications completely unrelated to microscopes, for example for mounting drills, lasers or hardness testers.

Description of this part for the microscope.

2490)
- metal plate for the base, black on one side and white on the other
- vertical steel post (stand)
- rack gear of the vertical movement mechanism
- focusing block with adjustment knobs (manufacturer's catalog name: Mikroskoptrieb 65 mm)
- holder to which the microscope body is mounted directly.
In the operating manual (https://www.mikroskop-online.de/Mikroskop%20BDA/30-725-1%20%20TECHNIVAL%202%20%20CITOVAL%202.pdf), these elements are numbered 1, 2, 3 and 35 on page 4.

Please note that the original rack gear used in Carl Zeiss Jena Citoval-2 microscopes is made of plastic and this component is very frequently damaged. If this particular element in your microscope has failed, Askania Mikroskop Technik Rathenow fortunately offers professionally manufactured brass rack gears for this microscope model (https://askania.de/products/zahnstange-messing-l-96mm).

Metal, cast or injection-moulded Carl Zeiss Jena parts carry their own identification numbers. This base (foot), into which the vertical stand post is screwed, bears the number 2490 (full designation: Si10 2490).

The Carl Zeiss Jena Technival and Citoval microscopes (older version without the number "2") are grey, while the Technival-2 and Citoval-2 models are white. This stand is white and is therefore intended for the newer Carl Zeiss Jena Citoval-2 and Technival-2 stereo microscopes.

Description of this part for the microscope.

microscope stage. It is also possible to mount a specialized stage on the side rails - these rails are visible in the photographs and are located on both sides of this stand base.

In the last photograph, on the scanned page from the Lomo MMU-1 microscope manual, an arrow indicates which component is being offered and where it is located in the microscope, allowing this part to be identified unambiguously.

Description of this part for the microscope.

Basic stand dimensions:
Support column diameter: 15 mm
Overall support column height: 220 mm
Glass plate opening diameter: 93.5 mm
Base length: 180 mm

The support column of this stand has a diameter of 15 mm. This allows virtually any stereo microscope or EPI metallurgical microscope with a 15 mm mounting bore to be installed on it, including:
- Carl Zeiss Jena Stemi SM-XX
- PZO MST-110 / MST-127
- PZO MST-130 / MST-131

When might this stand be needed?
- Stereo microscopes, including the Carl Zeiss Jena SM XX series, were often used on special holders or boom stands. As a result, many of these microscopes available on the second-hand market no longer include their original bench stand.

Description of this part for the microscope.

of 45 mm.
- This version of the base can be used with transmitted light, although the light source is not included.
- A microscope stage can be mounted on this base - the required mounting holes are provided.
- The stand is equipped with a worm-thread drive.

This heavy and stable stand is often used for applications completely unrelated to hardness testers or microscopes, for example for mounting drill presses, lasers, or stable macro photography setups.

Description of this part for the microscope.

is inserted into (in this model it is in fact the objective that goes in there)
- clamping screw that holds the microscope in the collar
- rack along which the microscope moves up and down inside the collar (also available separately https://www.microscopeparts.eu/part/91079)
- knobs that produce this movement, that is the focusing knobs (also available separately https://www.microscopeparts.eu/part/91063)
- internal shaft with a pinion that converts the rotary movement into vertical movement along the rack (also available separately https://www.microscopeparts.eu/part/91064)
- mounting block with a hole for fitting it onto the stand pillar
- inside the hole there is a split clamping sleeve with a screw driven in from the outside, locking the whole holder at the required height (also available separately)

Basic parameters of this holder:
Inner diameter of the collar: 50 mm (yes - 50 mm is not a mistake, this diameter is not commonly used on the market)
Diameter of the hole for the stand pillar: 24 mm (yes - 24 mm. This is not a measuring error)

Since these are unusual dimensions and you may suspect a measuring error, the gallery contains photos taken with a caliper as well as a photo of the stand pillar. The pillar is not part of this offer, but I do have it - if you need it, that is no problem :)

It is very likely that Nissho Optical (NSK for short) uses identical holders across the whole series of stereo microscopes it manufactured.