CubeMars name five different kinds of product on five different schemes and publish none of them. This is what the digits mean, worked out against the parts themselves. Where a reading comes from comparing the number with the measured part it says so, and where there is no rule to be had it says that rather than guessing.
The number after the dash is the reduction. It holds right across the range: AK40-10 is 10:1, AK45-36 is 36:1, AK80-64 is 64:1 and AKH70-48 is 48:1. It is the one part of the name you can rely on.
The frame size is not the outside diameter. An AK80-9 measures Ф98 mm across its housing; the 80 describes the motor inside it. From AK40 up to AK80 the two track each other closely enough to be useful, and then AK10 breaks the pattern completely — it is not a 10 mm anything, it is a higher-torque motor in the same Ф98 housing as the AK80. Read the number as a series name and take the diameter off the specification table.
KV is the motor's speed constant, in rpm per volt, measured at the rotor and before the gearbox. A high KV is a fast motor, not a strong one, and the same actuator is often sold in two KVs: the low-KV version makes more torque for the same current and gives up top speed for it.
With driver and without. The with-driver version has the controller built into the housing and is ready to take CAN. The without-driver version is the bare actuator, for a customer running their own electronics or fitting the driver board separately. Where both exist, the with-driver version is the cheaper way to end up with a driver.
CubeMars do not publish what the E, A and H stand for in AKE, AKA and AKH. Each is a distinct family at similar frame sizes — AKH is the hollow-shaft one — and the reduction still reads off the trailing number. We have asked them.
RI is an inner-rotor frameless motor, RO an outer-rotor one, and GL a gimbal motor. A frameless motor is a rotor and a stator and nothing else: no housing, no bearings, no shaft. You provide those, which is the point — it lets the motor disappear into your own structure.
The number is a frame size rather than a diameter you will measure: RI70 is Ф76, RO80 is Ф92.6, GL60 is Ф69. On the RO parts Lite means no hall sensors and Standard means with them; on the RI and GL parts that choice is spelled out in words instead.
The -PH on RI75-PH, RI85-PH and RI115-PH is not explained in any CubeMars document we have found.
The number is the bollard thrust in kgf, not a diameter and not a power rating — SW17 is rated at 17 kgf or better, DW25 at 25 kgf. This is the one CubeMars scheme that names the thing you actually select on.
SW is the shallow-water series, rated to 30 m. DW goes deeper. CW and CCW are the propeller's rotation: a vessel with two thrusters wants one of each, or it will yaw under thrust.
A thruster is a complete propulsion unit — motor, propeller, nozzle and a sealed housing — so it is quoted in kilograms-force, not in newton-metres, and it needs a plain sensorless ESC rather than the CAN controller a joint module uses.
TW-80A-12S reads as 80 A continuous on up to a 12-cell lithium pack. That is the usual convention for an ESC and it matches the parts, but CubeMars do not print the rule, so size the controller from its own specification sheet rather than from its name.
A driver board is named after the actuator it fits, not after itself, and they are not interchangeable: the board for an AK80-9 V3.0 is a different part from the one for an AK80-8. When in doubt, the product page for your motor links its own board.
AK80-9 is stamped on the motor, indexed by search engines and typed into purchase orders in that form. We show it that way even where a hyphen or a space would read more easily, because a part number that exists only on our pages is a part number nobody can match to an invoice, a customs entry or a datasheet.
If you know the model and want the figures, the specification table lists every part we carry on one page, sorted on whichever column matters to you. If you know the job but not the part, tell us what the joint has to do.