28JMS40K
Precision Planetary Gearbox for Stepper Motors · Spur gear
Overview
Outer Diameter28 mm
Rated Output Torque1.2–4 N·m
Reduction Ratio3.71:1 – 139:1
Number of Stages1–3
Ring Gear MaterialMetal
Drawings & Photos
Specifications
| Order No. | Number of Stages | Reduction Ratio | Rated Output Torque (N·m) |
Efficiency (%) |
Backlash (°) |
Length (mm) |
Weight (g) |
|
|---|---|---|---|---|---|---|---|---|
| 2820003 | 1 | 63/17 | 1.2 | 90 | 0.6 | 29 | 75 | View SKU |
| 2820005 | 1 | 57/11 | 1.2 | 90 | 0.6 | 29 | 75 | View SKU |
| 2820014 | 2 | 3969/289 | 2 | 81 | 1 | 36.1 | 97 | View SKU |
| 2820019 | 2 | 3591/187 | 2 | 81 | 1 | 36.1 | 97 | View SKU |
| 2820027 | 2 | 3249/121 | 2 | 81 | 1 | 36.1 | 97 | View SKU |
| 2820035 | 3 | 1539/44 | 2 | 81 | 1 | 36.1 | 97 | View SKU |
| 2820051 | 3 | 250047/4913 | 4 | 73 | 1.5 | 43 | 119 | View SKU |
| 2820071 | 3 | 226233/3179 | 4 | 73 | 1.5 | 43 | 119 | View SKU |
| 2820100 | 3 | 204687/2057 | 4 | 73 | 1.5 | 43 | 119 | View SKU |
| 2820139 | 3 | 185193/1331 | 4 | 73 | 1.5 | 43.1 | 119 | View SKU |
Pricing is quoted on request. Add ratio SKUs to your inquiry and submit for a quote.
Motor Shaft Pinion
| Module | Number of Teeth | Pressure Angle | Helix Angle | Bore Diameter (mm) |
|---|---|---|---|---|
| 0.5 | 11 | 20° | — | 3.48 |
| 0.5 | 17 | 20° | — | 3.48 |
General Specifications
Output Shaft BearingRolling Bearing
Max. Permissible Radial Load100 N
Max. Permissible Axial Load50 N
Operating Temperature-15 – 80 °C
Frame ShapeSquare
CustomizationAvailable on request
Request a Quote
Interested in 28JMS40K? Add the ratios you need above and submit an inquiry, or contact our engineers for matching support.