Planetary Gearboxes

Inline planetary gearboxes from PG16 to PG56 offer multiple reduction ratios for compact motor-driven mechanisms.

PLANETARY GEARBOXES

Planetary gearboxes reduce motor speed through stages arranged around a central axis. Their inline layout is useful when the driven shaft should follow the motor axis and radial space is constrained.

The PG series ranges from 16 to 56 mm in listed diameter. Different ratios can change gearbox length and output capacity, so a PG16 at one ratio should not be assumed to have the dimensions or rating of another. Match the gearbox input to the motor's shaft and mounting interface before committing to a combination.

Check the chosen planetary gearbox for:

Reduction ratio and resulting output speed
Maximum continuous torque for the selected variant
Gearbox length and output shaft diameter
Motor interface and permissible load conditions

For a preselected motor pairing, explore planetary gear motors. Consider losses and peak loads as well as the normal duty point.

Planetary Gearboxes

Model	GB Ø (mm)	Ratio (:1)	Cont. torque (mN·m)	GB length (mm)	Shaft Ø (mm)	Net mass (kg)	Specification	CAD	3D CAD
PG16	16	4 – 1024	98.07 – 392.27	13.7 – 28.1	3	0.0141 – 0.027		—
PG22	22	4.4 – 812	294.2 – 980.67	13.9 – 24.7	4	0.03 – 0.0528	—	—	—
PG25	25	4 – 1026	294.2 – 980.67	25 – 40.3	6	0.0501 – 0.0976	—	—	—
PG28	28	5 – 1319	1961.33 – 9806.65	25.9 – 52.1	6	0.0666 – 0.139		—
PG32	32	5 – 1844	4903.33 – 9806.65	25.9 – 52.1	6	0.096 – 0.196	—	—	—
PG36	36	5 – 2578	1961.33 – 9806.65	29.9 – 56.1	8	0.1449 – 0.2917		—	—
PG42	42	3.7 – 1590	4903.33 – 19613.3	29 – 76.4	8	0.25 – 0.7		—	—
PG45	45	3.7 – 1590	4903.33 – 19613.3	30.8 – 78.2	10	0.256 – 0.707		—	—
PG52	52	3.7 – 1896	9806.65 – 39226.6	38.2 – 100.7	12	0.32 – 0.906		—	—
PG56	56	3.7 – 1896	9806.65 – 39226.6	38.2 – 100.7	12	0.431 – 1.226		—	—