SR28 Spur Gearbox - Round
SR28 Series
SR28 is a 28 mm round spur gearbox with a 22.5 mm body length. The listed models offer several reduction ratios with a sleeve-bearing output shaft.
Product Highlights
- Listed gear ratios: 8–108:1
- Gearbox diameter: 28 mm
- Output bearing: sleeve bearing
- Gearbox length: 22.5 mm
Customization Available
- Custom output shaft dimensions and features
- Mounting and mechanical integration
- Gear ratios
- Special lubricants
Shop NowProduct Specifications
| Model | SR2880000 | SR2812000 | SR2824000 | SR2836000 | SR2848000 | SR2872000 | SR2810800 |
|---|---|---|---|---|---|---|---|
| Gearbox Type | Spur Gearbox - Round | Spur Gearbox - Round | Spur Gearbox - Round | Spur Gearbox - Round | Spur Gearbox - Round | Spur Gearbox - Round | Spur Gearbox - Round |
| Gearbox Model | SR28 | SR28 | SR28 | SR28 | SR28 | SR28 | SR28 |
| Gear Ratio (:1) | 8 | 12 | 24 | 36 | 48 | 72 | 108 |
| Max. Input Speed (rpm) | — | — | — | — | — | — | — |
| Number Of Gear Stages | 3 | 3 | 4 | 4 | 5 | 5 | 5 |
| Gearbox Diameter (mm) | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Gearbox Length (mm) | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 | 22.5 |
| Max Continuous Torque (mN·m) | 49.03 | 49.03 | 98.07 | 98.07 | 117.68 | 117.68 | 117.68 |
| Breaking Torque (mN·m) | 147.10 | 147.10 | 294.20 | 294.20 | 353.04 | 353.04 | 353.04 |
| Gearbox Efficiency (%) | 73 | 73 | 66 | 66 | 59 | 59 | 59 |
| Gearbox Weight (kg) | 0.057 | 0.057 | 0.058 | 0.058 | 0.059 | 0.059 | 0.059 |
| Shaft Diameter (mm) | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Pinion Hole Diameter (mm) | φ2.3 | φ2.3 | φ2.3 | φ2.3 | φ2.3 | φ2.3 | φ2.3 |
| Operating Temperature Range (°C) | -30 ~ 65 | -30 ~ 65 | -30 ~ 65 | -30 ~ 65 | -30 ~ 65 | -30 ~ 65 | -30 ~ 65 |
| Gearbox Housing Material | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) | Zinc Alloy (Die casting) |
| Gear Material | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel | Powder Metallurgy (Fe) / Plastics / Steel |
| Gear Design | Helical Gear / Spur Gear | Helical Gear / Spur Gear | Helical Gear / Spur Gear | Helical Gear / Spur Gear | Helical Gear / Spur Gear | Helical Gear / Spur Gear | Helical Gear / Spur Gear |
| Output Shaft Bearing | Sleeve Bearing | Sleeve Bearing | Sleeve Bearing | Sleeve Bearing | Sleeve Bearing | Sleeve Bearing | Sleeve Bearing |
| Lubricant In Gearbox | FUMIO | FUMIO | FUMIO | FUMIO | FUMIO | FUMIO | FUMIO |
| Axial Play (mm) | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Radial Play (mm) | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 | 0.05 |
| Backlash (°) | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Gear Module (M) | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 |