No more worries about installing motor test bases! Follow the specifications, and it's almost impossible to "fail"!
Motor test base installations often fail due to "relying on experience and lacking standards"—uneven ground causing base tilt, loose bolts leading to vibration, wildly inaccurate test data, and even worn motor bearings. In fact, by following the specifications step by step, you can complete the installation and avoid 90% of common issues. This article breaks down the entire process of motor test base installation, from preparation to acceptance, with clear requirements, so you can install the base without worries and make "failure" nearly impossible!
I. Core Installation Steps: 4-Step Standard Operation for Zero Failure
The installation process follows four steps: "positioning → leveling → fixing → sealing." Each step has clear standards, rejecting the idea of "close enough":
Step 1: Precise Positioning: Use a forklift or hoisting equipment to move the base to the installation position (use dedicated lifting points during hoisting to avoid base deformation). Refer to the workshop baseline or motor installation position, measure the distance between the base edge and the baseline with a tape measure (error ≤ 2mm). Then, use a laser alignment tool to project crosshairs, ensuring the base axis aligns with the motor axis (deviation ≤ 0.01mm). Mark the ground after positioning to prevent displacement;

Step 2: Level Calibration: Place a level gauge at five points across the four corners of the base working surface. Rotate the bottom leveling bolts clockwise (each rotation adjusts the level by 0.5mm), adjusting point by point until the bubble is centered. The leveling error at all points must be ≤ 0.01mm/m, and the difference between any two points must be ≤ 0.005mm. After calibration, mark the leveling bolt positions with red paint to avoid accidental adjustments later;
Step 3: Even Fixing: Tighten Φ24mm expansion bolts (6-8 bolts total, spaced 1.5-2m apart) in a "diagonal sequence." Perform this in two steps: first, pre-tighten to 50% of the rated torque (e.g., for an 8.8-grade bolt with a rated torque of 220N?m, pre-tighten to 110N?m), let it sit for 1 hour, then tighten to the rated torque. Finally, use a torque wrench to recheck, ensuring each bolt's torque deviation is ≤ ±5% to prevent local over-tightening and base cracking;
Step 4: Gap Sealing: Fill the gap between the base and the ground (≤ 2mm) with neutral silicone sealant. The sealant layer should be 1-1.5mm thick, applied continuously along the base edge without breaks or bubbles. After the sealant cures for 24 hours, press it by hand to ensure no deformation. This prevents dust and coolant infiltration and helps reduce vibration transmission.
II. Post-Installation Acceptance: 3 Tests to Pass for True Qualification
Don’t rush to use the base after installation. Perform these 3 acceptance tests to confirm everything is okay before putting it into service:
Accuracy Recheck: Use a level gauge to measure levelness again (error ≤ 0.01mm/m) and a laser alignment tool to measure the axis deviation between the base and motor installation position (≤ 0.003mm/m). The data must match the installation values to qualify;
Vibration Test: Under no-load conditions, place a vibration sensor on the base (sampling rate 1000Hz). Start a nearby motor of the same power (simulating working conditions). The base vibration amplitude must be ≤ 0.003mm, with no abnormal resonance;
Load Verification: Fix a motor matching the base’s load capacity (e.g., an 8-ton motor on a 10-ton base) to the base. After running for 30 minutes, check for no loose bolts, no base deformation, and torque test data repeatability ≥ 98%, indicating stable installation.
Whether the motor test base installation "fails" depends on following the specifications—thorough preparation, precise installation steps, and strict acceptance testing. By adhering to standards at every step, issues like "uneven ground, loose bolts, and insufficient precision" can be avoided. This specification not only makes the installation process smoother but also provides a stable foundation for subsequent motor testing, ensuring accurate and reliable test data. Follow these steps, and installing a motor test base will truly be worry-free—it’s almost impossible to "fail"!
Qili Machine Tool, Ms. Xie, 13785751790