The worm gear is versatile and features a maintenance-free design. It has a shaft distance of 20 mm and is available in 9 different gear ratios. The housing is made of either aluminum or zinc and effectively protects against grease leakage and dust exposure. The worm gear system is left-handed, with the direction of rotation on the shaft being flexible.
Main Features
- Shaft distance: 20 mm
- Maintenance-free grease lubrication
- Housing: Optional anodized aluminum or zinc in a material-saving design
- 9 gear ratios from 1:1 to 65:1
- Backlash at the output shaft: 1° ± 0.5° (at ratio 1:1: 2° ± 0.5°)
- Duty cycle: 20% in a 5-minute cycle (1 minute on, 4 minutes off)
- Lifetime of 1,000 hours at:
- Full load operation
- Input speed of 500 rpm
- Duty cycle of 20% in 5 minutes
- Ambient temperature of 20 °C
Variant Designation
The worm gear Ket-Motion 2020 D is available in different versions. Details on the variants and their order codes can be found in the corresponding data sheet.
Technical Specifications:
- Variant with keyway: Permissible forces on the output side FA= 500 N at FR= 0 N and FR= 500 N at FA= 0 N
- The position of the keyways is not aligned in standard variants D. Can be made on request
| Item number | Ratio i | Self-locking static |
Output speed range n in rpm
|
Max. output torque M in Nm
|
Max. drive torque M in Nm
| Drive side
Radial force1) FR in N
|
Drive side Axial force2) FA in N
|
Degree of efficiency in %
|
|
2020.00-XXPR65
| 65 : 1 | yes | 100/500/1000 | 4.5/3.8/3 | 0.2/0.2/0.2 | 500 | 500 | 29 |
|
2020.00-XXPR40
| 40 : 1 | yes |
100/500/1000
| 5.5/4.8/4 | 0.4/0.3/0.3 | 400 | 400 | 39 |
|
2020.00-XXPR30
| 30 : 1 | no |
100/500/1000
| 8.5/7/5.5 | 0.6/0.5/0.4 | 350 | 350 | 45 |
|
2020.00-XXPR23
| 23 : 1 | no |
100/500/1000
| 10/8/6 | 0.9/0.7/0.5 | 250 | 250 | 50 |
|
2020.00-XXPR18
| 18 : 1 | no |
100/500/1000
| 11/9/7 |
1.1/0.9/0.7
| 250 | 250 | 55 |
|
2020.00-XXPR15
| 15 : 1 | no |
100/500/1000
| 12/10/8 |
1.5/1.3/1
| 250 | 250 | 52 |
|
2020.00-XXPR13
| 13 : 1 | no |
100/500/1000
| 15/13/11 |
2.1/1.8/1.5
| 200 | 200 | 56 |
| 2020.00-XXPR05 | 5:1 | no |
100/500/1000 | 10/8/6 |
2.9/2.3/1.7
| 200 | 200 | 70 |
| 2020.00-XXPR01* | 1:1 | no |
100/500/1000 | 1.5/1/0.65 |
2.1/1.4/0.9
| 250 | 250 | 73 |
