The universally applicable and maintenance-free worm gear is available in a single size with a center distance of 20 mm and nine different gear ratios. The housing is optionally made of anodized aluminum or a material-optimized zinc design, fully sealed against grease leakage and dust intrusion. The worm gear set has a left-hand thread, and the shaft rotation direction is freely selectable.
Special Features
- Center distance: 20 mm
- Maintenance-free grease lubrication
- Housing: Anodized aluminum or zinc in an optimized design
- Nine gear ratios ranging from 1:1 to 65:1
- Torsional backlash at the output shaft: 1° ± 0.5° (for i = 1:1, the backlash is 2° ± 0.5°)
- Duty cycle: 20% over 5 minutes (1 minute ON, 4 minutes OFF)
-
Service life of 1,000 hours under the following conditions:
- Full load operation
- Input speed of 500 rpm
- Duty cycle of 20% over 5 minutes
- Ambient temperature of 20°C
Variant Key
The Ket-Motion 2020 D worm gear is available in various configurations. The specific variant is determined by the order code, which can be found in the corresponding data sheet.
| Item number | Ratio | 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-XXKR65
| 65 : 1 | yes | 100/500/1000 | 4.5/3.8/3 | 0.2/0.2/0.2 | 500 | 500 | 29 |
|
2020.00-XXKR40
| 40 : 1 | yes |
100/500/1000
| 5.5/4.8/4 | 0.4/0.3/0.3 | 400 | 400 | 39 |
|
2020.00-XXKR30
| 30 : 1 | no |
100/500/1000
| 8.5/7/5.5 | 0.6/0.5/0.4 | 350 | 350 | 45 |
|
2020.00-XXKR23
| 23 : 1 | no |
100/500/1000
| 10/8/6 | 0.9/0.7/0.5 | 250 | 250 | 50 |
|
2020.00-XXKR18
| 18 : 1 | no |
100/500/1000
| 11/9/7 |
1.1/0.9/0.7
| 250 | 250 | 55 |
|
2020.00-XXKR15
| 15 : 1 | no |
100/500/1000
| 12/10/8 |
1.5/1.3/1
| 250 | 250 | 52 |
|
2020.00-XXKR13
| 13 : 1 | no |
100/500/1000
| 15/13/11 |
2.1/1.8/1.5
| 200 | 200 | 56 |
|
2020.00-XXKR05
| 5:1 | no |
100/500/1000 | 10/8/6 |
2.9/2.3/1.7
| 200 | 200 | 70 |
|
2020.00-XXKR01*
| 1:1 | no |
100/500/1000 | 1.5/1/0.65 |
2.1/1.4/0.9
| 250 | 250 | 73 |
