CHM Flange Input Single Shaft Gear Reducer - Specifications and Dimensions
CHM Horizontal Flange Input Single Shaft Gear Reducer - Complete Technical
Specifications and Dimensions
The CHM series is a horizontal (foot operated) gear reducer with IEC flange input and a single solid
output shaft. Unlike integrated gear motors, the CHM series is designed specifically for self-contained
motors, connecting their standard IEC motors (three-phase, single-phase, braking or inverter loads) to
the gearbox through input flanges.
This guide provides complete technical specifications, including model code, rated power, reduction ratio,
input and output shaft dimensions, and installation hole layout.
H2: Model Code Breakdown
Example: CHM-28-400-30-S
| Segment | Value | Meaning |
|---|---|---|
| CHM | CHM | Horizontal foot-mounted, flange input, single output shaft |
| 28 | 28 | Output shaft diameter: 28mm |
| 400 | 400 | Motor power rating: 400W (1/2HP) |
| 30 | 30 | Reduction ratio: 1:30 |
| -S | S | Input flange standard: IEC B5 / B14 flange |
| Parameter | Value Range |
|---|---|
| Mounting Type | Horizontal (foot-mounted) |
| Input Type | IEC flange input (B5 or B14) – self-provided motor |
| Output Type | Single solid shaft |
| Power Range (Compatible) | 100W – 3,700W (0.1kW – 3.7kW) |
| Reduction Ratios | 3 : 1 to 1800 : 1 |
| Output Shaft Diameters | 18, 22, 28, 32, 40, 50 mm |
| Housing Material | Aluminum alloy (shaft 18–28) / Cast iron (shaft 32–50) |
| Gear Type | Hardened helical gears |
| Gear Hardness | HRC 55–62 |
| Insulation Class | N/A (motor is user-provided) |
| Protection Class | IP54 (gearbox only, motor protection depends on user selection) |
Standard ratios: 3 : 1 to 200 : 1
High ratios: 250 : 1 to 1800 : 1 (shrink-frame box)
Do you need dimension drawings and 3D models, product catalogs, or customized scale quotations? Please fill in the required model, power, and installation type, and our engineers will reply to you within 24 hours.