FG parallel-shaft helical gearmotor series

The 41.44 ratio reaches the listed 35.0 rpm, but its FB of 0.98 should not be treated as approval for a start-stop conveyor or shock-loaded machine. Give the supplier running torque, breakaway torque, starts per hour and operating hours so the gearbox size and motor combination can be checked together. The six-pole rows in the same FG37 table use 960 rpm input; their output speeds cannot be copied from this four-pole example.

For FG37, the published oil-capacity table lists 1.0 L at M1, 1.2 L at M2, 0.7 L at M3, 1.2 L at M4, 1.0 L at M5 and 1.1 L at M6. Those differences show why rotating an already selected gearbox needs a lubrication review. Identify the orientation on the FGW or FGL installation drawing and obtain the applicable oil-level, vent and service instructions; the capacity table alone is not a filling procedure.

GPG distinguishes a plain hollow shaft (K), a splined hollow shaft (KV, DIN 5480) and a shrink-disc hollow shaft (KH). FGW and FGL drawings also distinguish foot and flange arrangements. Specify the mating shaft dimensions and connection, output side A or B, mounting drawing and terminal-box position. A purchase description containing only “FG37, 0.75 kW” leaves both the reduction ratio and these physical interfaces unresolved.