Custom actuators
- Stroke
- Custom
- Load
- Per application
- Speed
- Per application
Confirm your selected specifications with Mach for this custom build.
Compare MKB helical planetary gearbox sizes, ratio-dependent nominal torque and stage-specific weights. Find the matching catalog drawing and confirm the motor interface with Mach.
Missing values need confirmation; they do not establish a mismatch.
Confirm your selected specifications with Mach for this custom build.
Confirm your selected specifications with Mach for this custom build.
Confirm your selected specifications with Mach for this custom build.
Confirm your selected specifications with Mach for this custom build.
Confirm your selected specifications with Mach for this custom build.
Confirm your selected specifications with Mach for this custom build.
Confirm the exact configuration, application and availability with Mach. Browse stocked components →

MKB Series / Gearboxes
MKB is a helical planetary gearbox series with single- and double-stage configurations. Use the size comparison to narrow the range, then check the exact ratio, output shaft and motor connection.
Mach will confirm your ordering part number, price and availability.
01 / Family specifications
Ratios are discrete catalog choices. Single stage: 3, 4, 5, 6, 7, 8, 9 or 10:1. Double stage: 15, 16, 20, 25, 28, 30, 35, 40, 45, 50, 60, 70, 80, 90 or 100:1. Confirm the complete configuration with Mach.
Use the nominal torque envelope, nominal input speed and stage-specific weight to narrow the size. Final selection requires the exact ratio row and motor interface.
Nominal torque across listed ratios · Single and double stage
Scroll across for all specifications →
| Catalog model | Nominal output torque rangeN·m, across listed ratios | Nominal input speedrpm, maximum average | Weight: single stagekg, varies by model | Weight: double stagekg, varies by model |
|---|---|---|---|---|
| MKB-042View model | 6–9 | 4000 | 0.6 | 0.7 |
| MKB-060View model | 18–27 | 3000 | 1.4 | 1.6 |
| MKB-090View model | 50–75 | 3000 | 3.7 | 4.2 |
| MKB-115View model | 120–180 | 3000 | 8 | 8.9 |
| MKB-140View model | 240–360 | 2000 | 16 | 17 |
| MKB-180View model | 500–750 | 1500 | 36 | 37 |
| MKB-220View model | 1000–1500 | 1000 | 53 | 54 |
The torque ranges span the listed ratios and both stage counts; the upper value is not available at every ratio. Nominal torque uses the catalog nominal input speed and 20,000-hour service-life basis. Nominal input speed means maximum average input speed. Weights are catalog values and may vary slightly by model. Maximum starting/stopping and emergency-stop torque are separate catalog ratings.
02 / Drawing
Review the mounting, shaft and motor connection in the catalog. Open a model from the specifications for its details and dimensional drawing.
03 / Downloads
Send your drawing or tell us what needs to change. We’ll help you work through the options.