DESCRIPTION
The 5840-31ZY is a right-angle brushed DC gear motor with an all-metal gear train and an 8 mm D-shaft. It is available in 12V and 24V versions and supports variable-speed operation and bidirectional rotation with a suitable DC motor controller.
Select a configuration by its rated output speed and torque. The speed shown in the variant selector is the nominal no-load output speed. Rated-load values are listed in the selection tables below.
KEY FEATURES
- Right-angle output with an 8 mm D-shaft
- All-metal gears, ball bearings, and copper windings
- 12V and 24V DC motor versions
- CW and CCW rotation with variable-speed operation
- Up to 70 kgf·cm rated output torque on selected high-reduction configurations
- 400 mm motor lead
SPECIFICATIONS
| Parameter | Specification |
|---|---|
| Model | 5840-31ZY |
| Motor type | Brushed DC gear motor |
| Rated voltage | 12V DC or 24V DC |
| Gear reduction range | 15.5:1 to 896:1 |
| Nominal no-load output speed | 6.5–516 RPM across the series, ±10% |
| Rated-load output speed | 4–410 RPM across the series, ±10% |
| Rated output torque | 2–70 kgf·cm, configuration-dependent |
| Stall torque | 7–300 kgf·cm, configuration-dependent |
| Rotation | CW / CCW |
| Speed control | Supported with a suitable DC motor controller |
| Weight | 360 g |
| Output shaft | Ø8 mm D-shaft |
| Motor body diameter | Ø39 mm |
| Lead length | 400 mm |
Electrical Specifications by Motor Version
| Parameter | 12V 1280 | 24V 2480 | 12V 1260 | 24V 2460 |
|---|---|---|---|---|
| No-load current | 0.32 A | 0.25 A | 0.30 A | 0.18 A |
| Rated current | 2.2 A | 1.5 A | 1.8 A | 1.1 A |
| Rated power | 19.5 W | 28.5 W | 21.5 W | 19.5 W |
| Stall current | 6.8 A | 4.8 A | 4.7 A | 2.3 A |
| Starting voltage | 1.8 V | 2.0 V | 1.8 V | 2.0 V |
Full Gear Ratio, Speed and Torque Reference
Speed pairs show no-load RPM / rated-load RPM. Stall torque is shown separately for each motor group. All torque values are in kgf·cm. See the variant selector for orderable configurations.
| Gear Ratio | 1280 / 2480 Speed | 1260 / 2460 Speed | Rated Torque | 1280 / 2480 Stall Torque | 1260 / 2460 Stall Torque |
|---|---|---|---|---|---|
| 15.5:1 | 516 / 410 | 387 / 280 | 2 | 8 | 7 |
| 25:1 | 320 / 260 | 240 / 160 | 3 | 15 | 13 |
| 31:1 | 258 / 195 | 193 / 130 | 5 | 22 | 20 |
| 50:1 | 160 / 115 | 120 / 90 | 8 | 28 | 26 |
| 62:1 | 129 / 101 | 96 / 75 | 10 | 30 | 28 |
| 73.5:1 | 108 / 95 | 81 / 65 | 10 | 35 | 33 |
| 96:1 | 83 / 71 | 62 / 45 | 15 | 40 | 38 |
| 100:1 | 80 / 70 | 60 / 43 | 15 | 43 | 41 |
| 120:1 | 66 / 52 | 50 / 36 | 20 | 50 | 45 |
| 147:1 | 54 / 42 | 40 / 30 | 20 | 58 | 55 |
| 156:1 | 51 / 40 | 38 / 29 | 20 | 60 | 58 |
| 193:1 | 41 / 30 | 31 / 25 | 20 | 70 | 60 |
| 239:1 | 33 / 26 | 25 / 20 | 25 | 70 | 65 |
| 313:1 | 26 / 20 | 19 / 15 | 25 | 80 | 75 |
| 328:1 | 24 / 19 | 18 / 14 | 30 | 80 | 75 |
| 448:1 | 17 / 13 | 13 / 8 | 40 | 90 | 85 |
| 657:1 | 12 / 8 | 9 / 7 | 70 | 300 | 300 |
| 896:1 | 9 / 6 | 6.5 / 4 | 70 | 300 | 300 |
DIMENSIONS
| Parameter | Dimension |
|---|---|
| Assembly length to motor housing end | 140.2 ± 0.5 mm |
| Gearbox face | 58 ± 0.25 × 40 ± 0.25 mm |
| Gearbox thickness shown in side view | 31 ± 0.25 mm |
| Motor section length | 82.2 mm |
| Motor housing diameter | Ø39 mm |
| Output shaft diameter | Ø8 mm (+0 / −0.03 mm) |
| D-shaft dimension across the flat | 7 mm (+0 / −0.1 mm) |
| Output shaft projection from the raised boss | 15 ± 0.5 mm |
| Shaft flat length | 13 mm (+0.2 / 0 mm) |
| Mounting features | 4 × M4 and 4 × Ø8 features shown on the drawing |
| Rectangular hole spacing shown | 40 ± 0.2 × 28 ± 0.2 mm |
| Cable length | 400 mm |
PACKAGE INCLUDES
- 1 × 5840-31ZY DC gear motor in the selected voltage and speed configuration, with attached lead
APPLICATIONS
The right-angle shaft layout can suit compact robotic mechanisms and small automation assemblies where the output must be perpendicular to the motor body. Check the rated speed, torque, and mounting drawing against the requirements of your mechanism before selecting a configuration.
SEO FAQ
What is the difference between no-load RPM and rated-load RPM?
No-load RPM is measured without an applied output load. Rated-load RPM is the output speed at the specified rated load. For example, the 120:1 configuration in the 1280 and 2480 versions is rated at 52 RPM and 20 kgf·cm, with a nominal no-load speed of 66 RPM.
Which 5840-31ZY gear ratio delivers 70 kgf·cm of rated torque?
The 657:1 and 896:1 gear ratios are listed at 70 kgf·cm rated output torque. Their rated output speeds vary by motor version. In the 1280 and 2480 versions, they run at 8 RPM and 6 RPM under rated load, respectively.
Can this DC gear motor run in both directions and at variable speeds?
Yes. The motor supports CW and CCW rotation and variable-speed operation. Select a brushed DC motor controller that supports your motor voltage and can handle the current demands of your application. The electrical table lists rated and stall current for each motor version.
What coupling fits the output shaft?
Look for a coupling or hub designed for an 8 mm D-shaft. Use the dimension drawing to check the shaft flat and available engagement length.
