The core of correctly installing the motor matching the BW13-87 cycloidal pinwheel reducer is to ensure the coaxiality accuracy of the motor and the reducer, the fastening of the connecting parts and the uniform stress state, so as to avoid vibration, bearing damage or motor burnout during operation. The specific installation steps and operating points are as follows:
1. Preparation and inspection before installation
Tool preparation: Prepare torque wrench (20~100N·m), Allen wrench (4~8mm), dial indicator and gauge base, rubber hammer, level, feeler gauge and other tools; prepare elastic couplings (such as plum blossom couplings), lock washers, positioning pins and other accessories.
Component inspection: Clean the surface oil stains and burrs on the motor shaft extension end and reducer input end flange, check whether the motor shaft keyway matches the reducer input shaft keyway, and whether the key block is intact and without deformation; check whether the motor anchor bolt hole corresponds to the bolt hole position of the installation foundation, and whether the reducer output end is firmly fixed.
Foundation leveling: Make sure the installation foundation (base or frame) is flat and firm, use a spirit level to check the flatness of the foundation, and control the error within 0.1mm/m; if the foundation is uneven, add adjustment pads for leveling to prevent stress deformation after the motor is installed.
2. Coaxiality adjustment of motor and reducer (key step)
Preliminary positioning: hoist the motor to the installation position, align the motor shaft extension with the reducer input flange, install the two halves of the elastic coupling, and put them on the motor shaft and reducer input shaft respectively. Do not tighten the coupling bolts yet.
Coaxiality detection: Fix the dial indicator on the reducer flange, and make the dial indicator probe vertically touch the outer circular surface (to detect radial runout) and the end face (to detect axial runout) of the coupling on the motor side; slowly rotate the motor shaft and record the dial indicator reading. The radial runout error needs to be ≤0.05mm, and the axial runout error needs to be ≤0.03mm.
Deviation adjustment: If the coaxiality exceeds the standard, correct it by increasing or decreasing the adjustment shims at the motor foot; the shims must be steel or copper shims. It is strictly prohibited to use multiple layers of thin shims (no more than 2 layers) to avoid coaxiality deviation caused by deformation of the gaskets during operation; the motor anchor bolts must be symmetrically adjusted during adjustment to prevent the motor from tilting.
3. Fastening and positioning of connecting parts
Coupling tightening: After the coaxiality reaches the standard, tighten the connecting bolts of the coupling evenly. The bolts need to be equipped with anti-loosening washers (such as spring washers, anti-loosening glue). The tightening torque refers to the coupling manual (usually 15~25N·m); after tightening, rotate the motor shaft again to ensure that the rotation is flexible and free of jamming.
Motor anchor tightening: Tighten the motor anchor bolts in a diagonal cross sequence, and use a torque wrench to tighten according to the torque specified by the equipment (BW13-87 supporting motor anchor bolt torque is usually 25~35N·m) to avoid uneven force on the bolts causing deformation of the motor frame; after tightening, shake the motor by hand to confirm that there is no looseness.
Auxiliary positioning (optional): If there is strong vibration or impact during the operation of the motor, a positioning pin can be installed between the motor base and the foundation to further fix the motor position and prevent coaxiality deviation after long-term operation.
