22mm Industrial Planetary Stepping Motor 22JXS20K/20STH
Planetary Gearbox
Ring material | Metal | |
Bearing at output | Ball bearings | |
Max. Radial load （10mm from flange） | ≤20N | |
Max. shaft axial load | ≤10N | |
Radial play of shaft （near to flange） | ≤0.08 mm | |
Axial play of shaft | ≤0.3 mm | |
Backlash at no-load | ≤1.5° | |
20STH Hybrid Stepping Motor Specifications
Model No. | Rated Voltage | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torgue | # of Leads | Rotor Inertia | Weight | Length L1 | Max. Gear Ratio |
Single Shaft | V | A | Ω | mH | g.cm | g-m2 | g | mm | ||
20STH33-0604A | 3.9 | 0.6 | 6.5 | 1.7 | 180 | 4 | 2.0 | 60 | 33 | ≤1:369 |
20STH42-0804A | 4.32 | 0.8 | 5.4 | 1.5 | 300 | 4 | 3.6 | 80 | 42 | ≤1:264 |
A Single Shaft, B Double shaft
22JXS20K Planetary Gearbox Specifications
Reduction ratio | 3.71 | 5.18 | 14 | 19 | 27 | 51 | 71 | 100 | 139 | 189 | 264 | 369 |
Number of gear trains | 1 | 2 | 3 | 4 | ||||||||
Length(L2) mm | 24.4 | 33.0 | 41.5 | 49.8 | ||||||||
Max. rated torque kg. cm | 6 | 10 | 16 | 20 | ||||||||
Short time permissible torque kg. cm | 18 | 30 | 48 | 60 | ||||||||
Efficiency % | 90% | 81% | 73% | 66% | ||||||||
Weight g | 35 | 45 | 55 | 65 | ||||||||
Dimensions
Frequency-torque Characteristics
