Small gear motor range

Although its main length and base spacings are unchanged, the 2# row changes drawing reference G from 122 to 120 mm, L from 17 to 18.5 mm and K from 64.6 to 63.5 mm. Retain the drawing revision in a replacement order and check adjacent brackets and shaft access, rather than approving the swap from a matching overall motor appearance.

The output-shaft table gives a 28 mm h6 shaft with projection P=43 mm and a 7 × 7 × 40 mm key. The 32 mm h6 shaft has P=55 mm and a 10 × 8 × 50 mm key. A coupling bored for one is not a direct fit on the other. The two illustrated configurations also have different base spacings, so changing to a larger shaft can require both coupling and mounting changes.

The permissible-torque chart marks the 80:1 through 200:1 columns in red, and the accompanying note says the red entries are unsuitable for heavy-load use. For example, the 200:1, 50 Hz cell prints 1,023 N·m at 7 rpm, but it is one of those restricted entries. That number must not be presented as an unrestricted heavy-duty continuous rating. State load severity, starts per hour and shock conditions, then obtain an approved gearbox selection.

The catalogue calculates speed from 1,400 rpm at 50 Hz and 1,680 rpm at 60 Hz, then says actual speed at rated load is 80–98% of the tabulated value. For the 20:1 example, the table gives 70 and 84 rpm. Applying that stated range yields 56–68.6 rpm at 50 Hz or 67.2–82.3 rpm at 60 Hz; these are calculated ranges, not measured speed guarantees. A process needing tightly controlled conveyor speed needs a defined loaded operating point and control method.

The dimensional table includes compound reductions far above 200:1, but the displayed torque chart stops at 200:1. The compound housing’s dimensions do not supply a missing output-torque rating. Ask for the exact compound ratio, allowable continuous and peak loads, efficiency and complete output-shaft drawing rather than multiplying the 200:1 torque by the added ratio.

TAILI publishes separate horizontal and vertical 0.75 kW pages. For this horizontal example, provide the selected configuration, power supply, frequency, ratio, required loaded output speed, load duty, coupling bore and mounting drawing. A compact or reduced-frame variant also needs separate confirmation: the catalogue cautions that its performance can differ from the standard listed values.