C2137

Coreless brushed DC motor platform. One body, 8 published windings, 2 published configurations.

Diameter: 21mm
Body length: 36.8mm
Mass: 68.5g
Commutator segments: 5
Rotation: CW
Revision: A, reviewed 2026-08-18

Envelope

Side elevation of the C2137 motor body, drawn to scale from the published envelope: ⌀21.0 mm by 36.8 mm. Shaft extension, flats, lead exit and mounting features are governed by the controlled drawing and are not shown here.

Model bounding box, X × Y × Z: 21.0 mm × 21.0 mm × 41.7 mm
Model revision: A, reviewed 2026-08-18
Mesh: 8,970 triangles

Every published winding

One row per winding. The envelope is identical across the platform; the electrical record is not.

C2137 windings
SKU	Rated voltage V	No-load speed rpm	Rated speed rpm	Rated torque mN·m	Stall torque mN·m	Rated current mA	No-load current mA	Stall current mA	Rated output W
Compare MM-C2137-060A MM-C2137-060A	6.0	6,770	5,120	3.92	16.1	534	45	2,060	2.10
Compare MM-C2137-120A MM-C2137-120A	12.0	7,050	5,800	4.41	24.8	287	15	1,550	2.68
Compare MM-C2137-120B MM-C2137-120B	12.0	8,210	7,060	4.41	31.6	336	19	2,300	3.26
Compare MM-C2137-120C MM-C2137-120C	12.0	2,480	1,780	4.9	17.4	110	5	379	0.91
Compare MM-C2137-120D MM-C2137-120D	12.0	8,400	6,440	6.86	29.4	516	21	2,140	4.63
Compare MM-C2137-240A MM-C2137-240A	24.0	9,400	7,320	3.92	17.7	175	11	749	3.00
Compare MM-C2137-240B MM-C2137-240B	24.0	3,850	2,840	4.9	18.7	88	4	322	1.46
Compare MM-C2137-240C MM-C2137-240C	24.0	7,800	6,580	8.34	53.1	293	8	1,820	5.74

Tick up to 4 products, then compare them side by side.

What this platform can be built into.

Published configurations on C2137
Configuration	Ratio :1	No-load output speed rpm	Continuous output torque mN·m	Torque margin ×	Rated voltage V
MM-C2137-P00226-240C	22.56	345.7	124.2	3.16	24.0
MM-C2137-P00903-120C	90.25	27.5	234.4	2.51	12.0