28mm Planetary Gearbox.Permissible Load Range: 1.2N.m~4.0N.m
Planetary Gearbox
Ring material | Metal |
Bearing at output | Ball bearings |
Max. Radial load(10mm from flange) | 100N |
Max.shaft axial load | 50N |
Radial play of shaft( near to flange) | ≤0.07 mm |
Axial play of shaft | ≤0.3 mm |
28STH Hybrid Stepping Motor Specifications
Model No | Rated Voltage | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torque | # of Leads | Rotor Inertia | Weight | Length L1 | Max, Gear Ratio |
Single Shaft | V | A | Q | mH | g.cm | g.m² | g | mm | ||
28STH45-0956A | 3.4 | 0.95 | 3.4 | 1.2 | 750 | 6 | 12 | 44.5 | 44.5 | ≤1:189 |
28STH51-0956A | 4.4 | 0.95 | 4.6 | 1.8 | 900 | 6 | 18 | 50.5 | 50.5 | ≤1:189 |
A-Single Shaft, B-Double shaft.
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 | 29.0 | 36.1 | 43.0 | 49.9 | ||||||||||
Max. rated torque | kg.cm | 12 | 20 | 40 | 40 | |||||||||
Short time permissible torque | kg.cm | 40 | 60 | 120 | 120 | |||||||||
Efficiency % | 90% | 81% | 73% | 66% | ||||||||||
Backlash at no-load | 0.5° | 1.0° | 1.5° | 1.5° | ||||||||||
Weight | g | 75 | 97 | 119 | 141 | |||||||||
Frequency-torque characteristics
Dimensions
Gearbox28JMS40K:28mm OD Precision Planetary gearbox.Pemissible Load Rnge:.40kg.cm.
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