YZG-36BL3657 36mm High Speed BLDC Gear Motor

What this one is for

Most 36 mm gear motors are bought for slow, heavy turns. This one is not.

Unloaded, it runs up quickly, and the gearbox bolted to the front carries a comparatively modest output torque figure. That combination belongs in equipment where throughput beats brute force: a peristaltic pump head, a blower, a short indexing conveyor, a valve that has to cycle fast rather than clamp hard. Put it on a job that needs a slow, crushing turn and you are using the wrong frame.

Both windings idle below a third of an amp unloaded, which is unusual for a motor this size and matters if the unit sits powered between movements. A timer that wakes the drive a few times a minute will not flatten a small battery pack over a shift. Armature inrush is the number to size a supply against, so read the starting column rather than the running figure.

The mounting end

Nothing about the flange is exotic, and that is deliberate.

A Ø28 mm flange is turned down to a Ø22 ±0.10 mm pilot boss, so location comes from the bore, not from the screws. Four M3 threads are spaced on a 19 mm square and clocked at 45° and 90°, which allows the cable exit to be indexed in quarter turns on a bracket already drilled. Output shaft is ground Ø8 mm at minus fifteen and minus twenty-five microns, 60 ±0.5 mm long, with a 2 mm relief behind the shoulder so a clamp hub lands flat against it.

Overall length is 96.3 ±0.5 mm. The rear housing accounts for 57 mm and the front section measures 39.3 mm. Because that front section matches the shorter motor in the same family, a bracket cut for the 3640 will accept this one without modification, and the reverse also holds. Body is aluminium; the gear train is steel. Mass and ingress protection are not published for this frame, so we will not quote them.

Winding data

Two windings, both measured on the same gearbox, so the columns below compare like with like.

Divide the output wattage by nominal voltage times current and the pair comes out near 66 per cent on the 12 V winding and close to 71 per cent on the 24 V. Those are arithmetic on the catalogue figures, not a separate bench test, but they tell you the drive is not throwing half the supply away as heat.

The higher voltage winding is also the quicker one here, which is not always the case. If your supply is 24 V, take that version and you get both the speed and the efficiency advantage.

Ratios, options and what we need from you

The Ø36 planetary platform behind this frame is listed from 3.7 up to 516 across one to four stages, so the shipped ratio is a specification rather than a limit. Send the shaft speed you actually need and the supply you have, and the winding plus ratio can be chosen together instead of guessed.

Shaft flats, keyways, cable length and exit direction, connectors, mounting holes and encoder fitment are all open to change against a drawing. Typical homes for it are powered tools, electric valves, portable screwdrivers, air and water pumps, small appliances, automotive actuators and intelligent hardware.

If the load can back-drive the output, a valve held open by pressure or a lift that gravity wants to drop, say so before ordering. A brake or a self-locking ratio has to be designed in, not bolted on afterwards.