PLF120 Standard Planetary Gearbox
PLF120 is a square-flange standard planetary gearbox in the PLF series.
Choose the reduction stage, ratio and motor interface, then check the drawing for the required output. Custom versions have separate specifications. The L2 16:1 option is not confirmed for PLF120; request engineering confirmation before specifying it.
Key Technical Specifications
| Item | Parameters | Description |
|---|---|---|
| Product Series | PLF Square-Flange Spur Gearbox | Standard Planetary Gearbox |
| Specifications / Frame Size | 120 | Model Specifications |
| Example Model | PLF120-5-S2-P2 | 120 Frame Size / 5:1 / P2 |
| Gear Ratio | L1:3/4/5/7/10;L2:12/15/20/25/28/30/35/40/50/70/100 | L2 The Table Also Includes 16 Compared with, But the Model in That Row Is Listed as PLF1120, Verify before Confirmation |
| Rated Output Torque | 86–210 Nm( By Ratio) | L1: 3=161, 4/5=210, 7=170, 10=86; L2: 12/15/30=161, 20/25/28/35/40/50=210, 70=170, 100=86 Nm; 16 Ratio Requires Verification |
| Maximum Torque | Of the Rated Output Torque 1.5 Times | Varies with Rated Output Torque at Each Ratio |
| Backlash | Standard Interface L1 ≤8; L2 ≤12 arcmin | Some Custom Outputs L1 Drawing Annotation ≤10 or ≤16; Use the Corresponding Engineering Drawing |
| Maximum Input Speed | 6000 rpm | Maximum Input Speed Specified in the Drawing |
| Rated Input Speed | 3500 rpm | Rated Input Speed Specified in the Drawing |
| Output Flange / Square Size | 120 mm (cast: 122 mm) | Square output flange dimension from https://www.andantexcn.com/wp-content/themes/andantex-local-test/site/assets/downloads/plf120/v11/2d/plf120-interface-l1-19-55p5-125p9-2D.jpg. Reference configuration; custom structures may differ. |
| Efficiency | L1 96%;L2 94% | Two-Stage Efficiency Differs |
| Operating Temperature | Standard Interface -10℃~+90℃ | Some Custom Interface Drawings Specify -20℃~+80℃; Use the Specific Interface Drawing |
| Maximum Axial Force | 1000 N | 2D Maximum Axial Force Specified in the Drawing |
| Maximum Radial Force | 1240 N | 2D Maximum Radial Force Specified in the Drawing |
| Weight | L1 7.08 kg;L2 8.7 kg | As Shown 22-95-115 Motor Interface, ±3%; Confirm Other Interfaces against Their Engineering Drawings |
| IP Rating | IP65 | Verified L1/L2 Standard Interface Drawing |
| Service Life | 20000 h | Service Life Specified in the Drawing |
Need a specification that is not listed? Contact us with the required configuration.
Find PLF120 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.
PLF120 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.
Typical applications for PLF120
Selection FAQ
What needs confirmation before selecting PLF120?
Check the exact reduction stage and ratio, standard or custom-output conditions, and motor interface. Resolve the source entries flagged on this page before treating a configuration as confirmed. Also review acceleration and deceleration time, inertia and offset loads. Use the PLF series comparison to review other model options without assuming that their limits are interchangeable.
Can PLF120 be configured for a different motor brand?
Review the actual motor drawing first. Confirm the shaft diameter and length, pilot diameter, key dimensions and mounting-hole arrangement before determining the input flange and bushing configuration. Motor brand or power alone does not confirm fit. Use the motor-interface checklist to prepare the dimensions.
Need help selecting a gearbox?
Send the required ratio, motor drawing, load and installation details for PLF120.






