PRECISION DRIVE
PBF120 Square-Flange Hollow-Output Planetary Gearbox
PBF120 is a square-flange planetary gearbox with a keyed hollow output for connecting a matching driven shaft.
View specifications, mounting dimensions and available engineering files for the PBF120 Standard Planetary Gearbox.
Key Technical Specifications
| Item | Parameters | Description |
|---|---|---|
| Product Series | PBF Square-Flange Hollow-Output Gearbox | Standard Planetary Gearbox |
| Specifications / Frame Size | 120 | Model Specifications |
| Output Structure / Flange Type | Square flange; keyed hollow output | — |
| Gear Ratio | L1: 3, 4, 5, 7, 10; L2: 20, 25, 28, 30, 35, 40, 50, 70, 100 | Only ratios listed in the supplied PBF drawings; availability must be confirmed for the selected interface. |
| Rated Output Torque | L1: 86–211 Nm; L2: 86–210 Nm | Ratio-dependent; see the selected L1/L2 dimensional drawing. |
| Maximum Torque | 1.5 × rated output torque | — |
| Backlash | L1: ≤8 arcmin; L2: ≤12 arcmin | 22-110-145 with 28 mm output bore: ≤16 arcmin per its drawing. |
| Maximum Input Speed | 6000 rpm | — |
| Rated Speed | 3500 rpm | Rated input speed. |
| Efficiency | L1: 96%; L2: 94% | — |
| Operating Temperature | −10 to +90 °C | — |
| Maximum Axial Force | 1000 N | — |
| Maximum Radial Force | 1240 N | — |
| Weight | L1: 6.93 kg; L2: 8.98 kg | — |
| Typical Interface | 19-95-130; 22-110-145; 24-110-145; 24-95-115M6; 28-110-145 | — |
| IP Rating | IP65 | — |
| Service Life | 20000 h | — |
Need a specification that is not listed? Contact us with the required configuration.
Find PBF120 drawings by motor interface
Select the motor interface and reduction stage to find the matching drawing and STEP model.
Enter the motor shaft diameter, pilot diameter and mounting-hole spacing to compare input interfaces across models.
Match your motor dimensions
Filter by motor type, reduction stage and mounting dimensions. Open the available files, or request the format you need.
PBF120 drawings and STEP models
Choose your configuration below. Use the 2D drawing to check dimensions and the STEP model to check fit in your assembly.
Check the configuration before downloading
Match the model, reduction stage and motor interface to the drawing. Custom input or output dimensions require a separate set of files.
Selection FAQ
PBF120 Can I Order by Model Number Alone?
First confirm the gear ratio, Load, Output Speed, Mounting orientation and motor interface. The same frame size may have different interfaces and configurations.
Drawings and 3D How to Confirm Models?
Find resources on this page or in the Download Center, Confirm the final version against the motor interface and machine mounting dimensions.
What If My Specifications Are Incomplete?
Provide the Motor Model, Load, Target Speed, Required Torque, Cycle Time & Installation Space, Our engineers can help confirm the requirements.
Need help selecting a gearbox?
Send the required ratio, motor drawing, load and installation details for PBF120.