Horizontal and Vertical Installation of Explosion-Proof Motors
2026-02-12
Explosion-proof motors offer multiple installation configurations, with two primary methods: horizontal installation with a base plate, mounted parallel to the motor shaft axis; and vertical installation with a flange, mounted perpendicular to the motor shaft axis.
Horizontal explosion-proof motor installation requires special attention to several dimensions. The most critical are dimensions A and B on the base: A represents the radial distance between the center of the motor base mounting holes, while B denotes the axial distance between the center of the motor base mounting holes. Additionally, dimension C must be checked, which indicates the distance from the shaft shoulder to the nearest axial mounting hole on the base. Sometimes, variations in dimension C can also affect installation. Furthermore, careful attention should be paid to the shaft extension, shaft diameter, and keyway. Once these dimensions are finalized, the horizontal motor can typically be fully installed. Sometimes differing C dimensions can also affect installation. Next, pay attention to the shaft extension, shaft diameter, and keyway. Once the dimensions of these parts are determined, the horizontal motor can generally be fully installed.
For vertical explosion-proof motors, focus on flange dimensions: M (center distance between holes), N (flange face diameter), and P (flange outer diameter). Dimensions M and N are critical and must match for installation. While P may sometimes vary slightly, certain equipment requires precise P alignment. Additionally, like horizontal motors, verify shaft extension, shaft diameter, and keyway dimensions. Accurate measurement of these dimensions ensures proper installation of explosion-proof motors.