42 Series Radiation-Resistant High-Low Temperature Stepper Motor
Product Overview
The WHEATSTONE 42 Series Radiation-Resistant High-Low Temperature Stepper Motor is specially engineered for extreme operating environments involving both high radiation exposure and wide temperature fluctuations. With robust construction, advanced insulation technology, and precision stepper design, this motor guarantees stable motion control, long service life, and reliability in critical applications such as aerospace, nuclear systems, and scientific instruments.
Key Features
Radiation Resistance – Built with radiation-hardened insulation and materials to maintain stable performance under high-dose radiation environments.
Wide Temperature Tolerance – Operates reliably in both high-temperature and cryogenic conditions, making it suitable for aerospace and space-grade applications.
Precision Motion Control – High step accuracy and repeatability for critical positioning tasks.
Durable Construction – Reinforced bearings, optimized winding, and protective coating ensure long service life.
Custom Options – Configurable winding, torque output, and connector types for integration into specialized equipment.
Low Maintenance – Simple stepper motor design with enhanced durability reduces servicing needs in inaccessible environments.
Technical Highlights
Motor Type: Radiation-Resistant Stepper Motor
Frame Size: 42 mm (NEMA 17 equivalent)
Step Angle: 1.8° standard, customizable
Torque Output: High holding torque in compact frame
Temperature Range: -196°C to +200°C (application-dependent)
Radiation Tolerance: >1×105 Gy 1×10⁶Gy1×107Gy(customizable)
Voltage/Current: Custom windings available
Applications: Aerospace systems, nuclear power facilities, particle accelerators, cryogenic equipment, and scientific research instruments
Motor Model
| Motor Model | L(mm) |
| 42BYG350A-F-401 | 33.5 |
| 42BYG350A-F-402 | 33.5 |
| 42BYG350A-F-403 | 33.5 |
| 42BYG350A-F-404 | 33.5 |
| 42BYG350B-F-401 | 39.5 |
| 42BYG350B-F-402 | 39.5 |
| 42BYG350B-F-403 | 39.5 |
| 42BYG350B-F-404 | 39.5 |
| 42BYG350C-F-401 | 47.5 |
| 42BYG350C-F-402 | 47.5 |
| 42BYG350C-F-403 | 47.5 |
| 42BYG350C-F-404 | 47.5 |
| 42BYG350D-F-401 | 59.5 |
| 42BYG350D-F-402 | 59.5 |
| 42BYG350D-F-403 | 59.5 |
| 42BYG350D-F-404 | 59.5 |
Motor Dimensions
Electrical Parameters
| Main performance parameters |
| Motor Model | Holding Tourge(NM)
| Rated current(A) | Phase Resistance(Ω) | Phase inductance(mH) | Rotor of Inertia(g.cm²) | Number of leads |
| 42BYG350A-F-401 | 0.31 | 1.4 | 2.3 | 3.8 | 36.0 | 4 |
| 42BYG350A-F-402 | 0.31 | 1.0 | 4.7 | 7.7 | 36.0 | 4 |
| 42BYG350A-F-403 | 0.31 | 0.7 | 9.0 | 15.0 | 36.0 | 4 |
| 42BYG350A-F-404 | 0.31 | 0.5 | 18.6 | 30.0 | 36.0 | 4 |
| Main performance parameters |
| Motor Model | Holding Tourge(NM)
| Rated current(A) | Phase Resistance(Ω) | Phase inductance(mH) | Rotor of Inertia(g.cm²) | Number of leads |
| 42BYG350B-F-401 | 0.46 | 1.7 | 2.1 | 4.0 | 55.0 | 4 |
| 42BYG350B-F-402 | 0.46 | 1.2 | 3.9 | 7.8 | 55.0 | 4 |
| 42BYG350B-F-403 | 0.46 | 0.85 | 7.9 | 16.0 | 55.0 | 4 |
| 42BYG350B-F-404 | 0.46 | 0.6 | 15.5 | 31.0 | 55.0 | 4 |
| Main performance parameters |
| Motor Model | Holding Tourge(NM)
| Rated current(A) | Phase Resistance(Ω) | Phase inductance(mH) | Rotor of Inertia(g.cm²) | Number of leads |
| 42BYG350C-F-401 | 0.6 | 1.96 | 1.9 | 4.0 | 73.0 | 4 |
| 42BYG350C-F-402 | 0.6 | 1.4 | 3.5 | 7.4 | 73.0 | 4 |
| 42BYG350C-F-403 | 0.6 | 1.0 | 7.2 | 15.0 | 73.0 | 4 |
| 42BYG350C-F-404 | 0.6 | 0.7 | 13.8 | 29.0 | 73.0 | 4 |
| Main performance parameters |
| Motor Model | Holding Tourge(NM)
| Rated current(A) | Phase Resistance(Ω) | Phase inductance(mH) | Rotor of Inertia(g.cm²) | Number of leads |
| 42BYG350D-F-401 | 0.89 | 2.3 | 1.6 | 4.0 | 110.0 | 4 |
| 42BYG350D-F-402 | 0.89 | 1.65 | 3.3 | 7.7 | 110.0 | 4 |
| 42BYG350D-F-403 | 0.89 | 1.15 | 6.4 | 15.0 | 110.0 | 4 |
| 42BYG350D-F-404 | 0.89 | 0.82 | 12.9 | 30.0 | 110.0 | 4 |
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