550 DC Motor, DC can motor

The 550 DC motor (DC can motor) has a 35.8 mm can, 57 mm long, and a 3.175 mm shaft 21 mm long; two M3 holes 25 mm apart hold it. Modeled as simplified STEP files. Modeled from Mabuchi's RS-550PC and Johnson Electric's HC683LG drawings.

How these parts are made, and what the levels mean: read the method

• Also searched as: 550 DC motor
• Model id: dc-motors-550
• Standard: DC can motor · size 550

Files

Part key	Simplified
dc-motors-550	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
D	Can diameter		35.8		35.8	nominal	L1
L	Body length		57		57	nominal	L1
Lt	Overall length		75 ref		75	reference value	L0 (ref: one source)
E	Shaft length		21		21	nominal	L1
d	Shaft diameter		3.175		3.175	nominal	L1
B	Front boss diameter		13		13	nominal	L1
h	Front boss height		4.5		4.5	nominal	L1
Br	Rear boss diameter		13		13	nominal	L0 (nom: one source)
hr	Rear boss height		3		3	nominal	L1
A	Mounting hole spacing		25		25	nominal	L1
nh	Number of mounting holes		2		2	nominal	L1
dt	Mounting hole thread		3		3	nominal	L1
Dx	Largest outside diameter			38.5	38.5	single limit (max), modeled at the limit	L0 (max: one source)

Drawing

As a PDF: CC-DCMOTOR-SZ-550.pdf.

What each maker states

• Where the makers' drawings differ, the model takes the largest stated, so a mount made to it clears every maker's motor (ADR 0134 row 4): shaft length E 21 mm (Johnson Electric 21, Mabuchi 13.2); rear boss height hr 3 mm (Johnson Electric 2.8, Mabuchi 3). Check your own motor's drawing where it matters.

The 550 DC motor beside the 540 and the 775

The 550 is number 4 of the 5 DC can motor DC motors published here, listed from Mabuchi FA-130RA, 130 to 775.

• Can diameter (D): 35.8 mm on the 550 DC motor, against 35.8 mm on the 540 and 42.3 mm on the 775.
• Body length (L): 57 mm on the 550 DC motor, against 50 mm on the 540 and 67 mm on the 775.
• Overall length (Lt): 75 mm (reference) on the 550 DC motor, against 67 mm (reference) on the 540 and 90 mm (reference) on the 775.
• Shaft length (E): 21 mm on the 550 DC motor, against 18 mm on the 540 and 18.2 mm on the 775.
• Shaft diameter (d): 3.175 mm on the 550 DC motor, against 3.175 mm on the 540 and 5.005 mm on the 775.
• Front boss diameter (B): 13 mm on the 550 DC motor, against 13 mm on the 540 and 17.5 mm on the 775.
• Front boss height (h): 4.5 mm on the 550 DC motor, against 4.5 mm on the 540 and 4.4 mm on the 775.
• Rear boss diameter (Br): 13 mm on the 550 DC motor, against 13 mm on the 540 and 17.5 mm on the 775.

Other sizes

• One size smaller: 540 DC Motor, DC can motor, 35.8 mm can, 50 mm long, 3.175 mm shaft, M3 mounting holes 25 mm apart, Johnson Electric and Mabuchi Motor data.
• One size larger: 775 DC Motor, DC can motor, 42.3 mm can, 67 mm long, 5.005 mm shaft, M4 mounting holes 29 mm apart, AndyMark, Johnson Electric and Mabuchi Motor data.

Documents

• CC-DCMOTOR-DS-550.pdf: 550 datasheet: values with levels, sources
• CC-DCMOTOR-SZ-550.pdf: 550 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

johnson-hc683lg-011, johnson-hc683lg-011-figures, mabuchi-complete. Full citations: the method page and this size's datasheet.

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