Opto Focus Drive C Coarse Positioners Review: Specs, Price and Applications

Opto Focus Drive C is a manually operated coarse focusing unit for compatible microscope stands. The supplied listing identifies article 043-610004, 57 mm travel and 21 mm travel per knob revolution. It can use stand or wall adapters, including a selected clamp for a 32 mm post.
Quick Verdict
A practical coarse-height adjustment for a compatible optical setup. Choose it for the travel and mounting arrangement; it does not provide the fine adjustment or powered motion of other focus mechanisms.
Opto Focus Drive C Coarse Positioners at a Glance
Specification | Details |
Article | 043-610004 |
Operation | Manual coarse focus |
Listed travel | 57 mm |
Travel per knob revolution | 21 mm |
Listed maximum load | 10 kg; verify mounting |
Mounting options | Track Stand / wall adapter or selected 32 mm post clamp |
Other accessories | Selected microscope carriers and clamps |
Design and Engineering Assessment
At 21 mm per revolution, one degree of knob rotation corresponds nominally to about 58 µm of travel. This is a kinematic conversion, not a measured positioning resolution, because hand control, mechanical play and setup stiffness affect the result.
Adapters and microscope carriers determine the actual load path. Check the chosen clamp diameter, offset and fastening arrangement rather than treating the 10 kg figure as permission for any overhung installation.
Manual Positioning and Optical Use
A manual focus mechanism translates hand adjustment into relative movement between the optical system and workpiece. Its travel and adjustment ratio influence convenience, while the installed stand, adapter and microscope determine the useful geometry. Select the mechanism against the required working distance and adjustment range rather than assuming that more travel always improves the optical setup.
A knob graduation is an aid to operation, not automatically a calibration or accuracy specification. Backlash, approach direction, fixture stiffness and the operator’s technique affect the achieved position. For a measurement task, establish the relevant dimensional reference independently of the adjustment scale.
Mounting and Load Support
The stand and carrier must support the instrument’s weight and the moment created by any overhang. A load rating should be interpreted with the specified mounting arrangement and orientation. A heavy camera or long optical assembly can alter the center of gravity without changing the nominal microscope model.
Check adjustment clearance, cable movement and the risk of contact throughout the useful travel. External cables can pull on a light optical assembly and affect focus or stability. A compatible clamp diameter alone does not establish the stiffness of the complete installation.
Selection and Acceptance
Compare coarse travel, fine adjustment if present, mounting adapters and the required optical working distance. If the process requires automatic scanning or repeatable programmed motion, a manually adjusted unit needs to be distinguished from a motorized positioning system. It has no implied controller interface or position feedback.
Acceptance should use the actual instrument, carrier and operating height. Check adjustment feel, reversal behavior, image stability and retention of the selected position. Preserve adapter and article numbers so that service restores the correct mechanical arrangement rather than a visually similar focus block.
Applications and Selection
Manual microscope, inspection and imaging arrangements needing compatible coarse focusing.
For Opto Focus Drive C Coarse Positioners, define the actual machine duty before selecting an ordering configuration. Include the required operating point, available installation space, environment and control interfaces. The specification table describes the product or family; the surrounding machine determines which of those features matters for the intended job.
Price and Value
Price: Request a quote for the exact configuration. Compare the product, compatible control equipment, required mechanical parts, cabling and commissioning as one installed system. A component price alone does not represent the cost of a working automation axis.
Evaluate an alternative against the same duty and acceptance criteria. Match the continuous operating requirement first, then compare transient capability, feedback, mechanical fit and support. This avoids choosing between superficially similar products whose ratings describe different operating conditions.
Pros and Cons
Advantages
Simple manual adjustment over a defined stroke
Multiple mounting and carrier options
Limitations
Coarse adjustment is not a fine-focus mechanism
Adapter and overhung-load suitability require separate checks
Who Should Consider Opto Focus Drive C Coarse Positioners?
Consider Opto Focus Drive C Coarse Positioners for manual microscope, inspection and imaging arrangements needing compatible coarse focusing. Establish the required operating point and installation interfaces before choosing the configuration, and use a representative loaded cycle as the acceptance basis.
Opto Focus Drive C Coarse Positioners FAQ
What is Opto Focus Drive C Coarse Positioners?
Opto Focus Drive C is a manually operated coarse focusing unit for compatible microscope stands.
Which specifications matter most?
Article: 043-610004. Operation: Manual coarse focus. Interpret the remaining ratings within the selected configuration and operating duty.
What applications should it be considered for?
Manual microscope, inspection and imaging arrangements needing compatible coarse focusing.
What is the main advantage?
Simple manual adjustment over a defined stroke. Multiple mounting and carrier options.
What limitation affects integration?
Coarse adjustment is not a fine-focus mechanism. Adapter and overhung-load suitability require separate checks.
What is the price?
Request a quote for the selected model, options and delivery terms. Any stated example price applies only to its identified seller configuration and may change.
How should an alternative be compared?
Use the same operating duty, installation envelope and acceptance requirements. Compare the complete system, including the compatible drive or controller, mechanical interfaces and commissioning effort.
What should be specified when ordering?
State the complete model or configuration, intended operating point, mechanical interfaces and required control equipment. Include the relevant environment, accessories and quantity so that the quotation describes a usable system.
Prices are indicative and may change. Confirm the final configuration, commercial terms and delivery schedule before ordering.





