CHIHAI MOTOR FK280WH-5028EG-43DX High-Torque DC Motor, 11.1V
CHIHAI MOTOR FK280WH-5028EG-43DX High-Torque DC Motor, 11.1V
CHIHAI MOTOR
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Overview
The CHIHAI MOTOR FK280WH-5028EG-43DX is a compact brushed DC motor with an 11.1V reference supply, D-shaped output shaft and model-specific high-speed performance. Choose the motor alone, the spade-terminal lead package or the steel-cut bevel-gear package.
Features
- 2 mm shaft with a 1.5 mm D-flat reference for compatible mechanical coupling.
- Compact metal housing and a 32 mm body-length reference.
- 0.35 mm armature laminations, copper windings and dynamic balance correction.
- N35SH NdFeB magnet reference and graphite-based copper-carbon brush construction.
- Optional lead set or bevel gear, with source-specific package photographs.
Specifications
| Specification | Value |
|---|---|
| Brand / model | CHIHAI MOTOR / FK280WH-5028EG-43DX |
| Motor type | High-speed brushed DC motor |
| Nominal supply / speed | 11.1V DC /38,000 rpm reference |
| No-load speed specification | 38,000 rpm ±10% at rated voltage |
| No-load current specification | ≤1.3 A at rated voltage |
| Overall length | 43.4 ±0.3 mm |
| Body length / outline | 32.0 ±0.2 mm /24.0 ×19.7 mm references |
| Output shaft | 2 mm diameter; D-flat dimension1.5 ±0.02 mm |
| Shaft projection / D-flat length | 9.3 ±0.5 mm /6.5 ±0.1 mm |
| Mounting | 2 ×ISO M2.0 ×0.4 tapped holes;17.0 mm spacing |
| Other drawing references | Register diameter6.15 mm; front offset1.6 mm; rear offset2.5 mm; rear-view15.2 mm reference |
| Motor / packed weight | Approximately50 g motor /65 g packed |
| Armature construction | 0.35 mm laminations, insulated narrow-slot armature, enamelled copper windings and dynamic balance correction |
| Commutator connection | Resistance-welded connection with adhesive reinforcement |
| Magnet reference | N35SH NdFeB;150°C material heat-resistance reference, not complete motor operating-temperature rating |
| Brush construction | Graphite-based copper-carbon brushes |
| Rotation / axial clearance | CCW reference /0.05–0.50 mm, measured by dial gauge |
| Insulation resistance | ≥20.0 MΩ between terminals and metal housing, tested at500V DC |
Electrical Performance
The following operating-point references are at 11.1V DC. No-load, stalled and maximum-efficiency conditions differ; the values should not be treated as one simultaneous operating condition.
| Operating point | Speed | Current | Torque |
|---|---|---|---|
| No-load reference | 38,500 rpm | 1.0 A | — |
| Stall reference | 0 rpm | 84 A | 2,280 gf·cm |
| Maximum-efficiency operating point | 34,200 rpm | 9.1 A | 225 gf·cm |
The specification limits below are separate from the individual reference test points. The rated voltage must remain stable at the motor terminals for the stated stall-current test condition.
| Specification / condition | Limit |
|---|---|
| Stall torque at rated voltage | ≥193 mN·m; also listed as≥1930 gf·cm |
| Stall current at stable11.1V motor-terminal voltage | ≥72 A |
Stall figures are not continuous operating ratings. Avoid blocking the shaft, and use a supply, conductors and switching equipment appropriate for the selected operating point and starting current. The 150°C reference is for magnet material and does not establish a complete motor operating-temperature rating.
Mechanical Dimensions and Gear Selection
Check the output-shaft diameter, D-flat, projection, mounting-hole spacing and terminal clearance against the mechanism. The dimension drawing identifies the corresponding positive and negative terminal marks. Confirm the actual motor orientation before connection.
The bevel-gear option has a 2 mm bore and a 1.5 mm D-flat reference. Its image identifies an 8 mm front-view diameter, a 7 mm side-view dimension and a 5.11 mm axial dimension. Check the mating gear dimensions and tooth engagement before selecting this package; the motor format alone does not establish gearbox compatibility.
Applications
For compatible compact toy and model drives, flywheel mechanisms and small-car applications when their supply, current, load and mechanical requirements match this motor. No particular gearbox, battery or controller compatibility is implied.
What's Included
| Selected configuration | Contents |
|---|---|
| FK280WH High-Torque Motor | 1 × selected motor |
| FK280WH Motor + Spade-Terminal Leads | 1 × motor and1 × spade-terminal lead set |
| FK280 High-Torque Motor + Steel-Cut Bevel Gear | 1 × motor and1 × steel-cut bevel gear, as shown in the corresponding option photo |
A power supply, battery, controller and application equipment are not included. The lead set is included only in the lead package; the bevel gear is included only in the gear package.
FAQ
What is the output-shaft shape?
It is a 2 mm shaft with a 1.5 mm D-flat reference. Check the 9.3 mm projection and 6.5 mm flat-length references against the intended coupling.
Does the basic motor option include a bevel gear?
No. Select the package that explicitly names the steel-cut bevel gear.
Are the 38,500 rpm and 84 A figures one running operating point?
No. 38,500 rpm is a no-load reference, while 84 A is a stalled-current reference. Do not operate continuously at stall.
Can the complete motor run at 150°C?
The 150°C figure describes the referenced magnet material. It is not a complete-motor operating-temperature specification.
Visual Details
