The stepper motor reducer is fixed without using screws and nuts，There are several approaches to consider，Each of these methods has its own applicable scenarios and advantages and disadvantages：

1. Magnetic fixation

• principle：The stepper motor and the reducer are adsorbed together by magnetic force。

• Application scenario：Suitable for limited installation space，And the motor and reducer material suitable for magnetic adsorption occasions。

• Merits and demerits：The advantage is easy to install，No additional fasteners required；The disadvantage is that the magnetic force may be interfered with by external magnetic fields，And the magnetic force may weaken after long-term use，Cause unstable fixation。

2. Fastener or clamp fixation

• principle：Specially designed clasps or clamps，The stepper motor and the reducer are fastened together by mechanical structure。

• Application scenario：Suitable for applications requiring quick installation and disassembly，And the installation accuracy has certain requirements of the scene。

• Merits and demerits：The advantage is convenient installation and disassembly，The fixed position can be adjusted as required；The disadvantage is that custom clasps or fixtures are required，The cost may be higher。

3. Adhesive fixation

• principle：Use a high strength adhesive（Such as epoxy resin、Structural adhesive）Glue the stepper motor and the reducer together。

• Application scenario：Applicable to the installation position has strict requirements，And do not need frequent disassembly occasions。

• Merits and demerits：The advantage is that it is firmly fixed，Not easily loose；The disadvantage is that the adhesive takes some time to cure，And once glued, it is not easy to disassemble。

4. Expansion tube or expansion screw instead

• Although this method itself involves the use of screws，But it can provide an alternative idea in principle，That is, the principle of expansion is used to achieve fixation。

• In some special cases，If space is extremely limited and conventional screws and nuts are not available，You can consider using expansion tubes or fasteners with similar principles to fix the stepper motor and reducer。

5. Wedge-block fixation

• principle：Using the wedge block bevel principle，The wedge is wedged into the gap between the stepper motor and the reducer by tapping or applying pressure，Thus fixed。

• Application scenario：Suitable for emergency repair or temporary fixing。

• Merits and demerits：The advantage is simple operation，No special tools required；The disadvantage is that the fixing effect may not be as stable as the screw nut，And may cause some damage to the motor and reducer。

Matters needing attention

• When selecting a fixing method that does not use screws and nuts，The weight of the motor and reducer should be fully considered、Factors such as vibration and impact force during operation，Ensure that the selected method meets the fixed requirements。

• For application scenarios that require long-term stable operation，It is recommended to give priority to using reliable fastening methods such as traditional screws and nuts。

• Before performing any fixed operations，You should carefully read the operating instructions and safety specifications of the relevant products，Make sure the operation is correct。