Frequently Asked Questions
Torque, vacuum, temperature, power and control — the numbers that decide if a motor survives your environment.
Every CTRL Motor product is specified against a standardized environmental grade combining temperature range and vacuum level. Select the grade that covers your worst-case condition — custom grades beyond this table are available on request.
| Category | Code | Temperature Range | Max Casing °C | Vacuum (Pa) |
|---|---|---|---|---|
| Wide Temperature | NTL2 | −40 ~ +85 °C | +115 | — |
| NTL3 | −60 ~ +85 °C | +115 | — | |
| High-Temperature Vacuum | VMT1 | −20 ~ +200 °C | +200 | 10⁻³ |
| VMT2 | −20 ~ +150 °C | +150 | 10⁻³ | |
| VHT1 | −20 ~ +200 °C | +200 | 10⁻⁵ | |
| VHT2 | −20 ~ +160 °C | +160 | 10⁻⁵ | |
| Deep Cryogenic | VTL3 | −60 ~ +100 °C | +130 | 10⁻¹ |
| NTL4 | −80 ~ +85 °C | +115 | — | |
| SLT | −196 ~ +40 °C | +100 | — |
Every product in this catalog is built and inspected against one of these standardized grades. Special requirements — radiation resistance, mold resistance, impact resistance, shaft forms, double shafts, encoders and brakes — are customized on request.
The maximum holding torque of our stepper motors is 5.5 N·m (HK86118W / HS86118W, 86 mm frame), and the maximum rated torque of our servo motors is 5.7 N·m (HSK1118A / HSV1118A, 1800 W). GP/GZ planetary reducers with ratios to 200:1 multiply output torque for high-load axes.
Standard motor grades cover 10⁻¹ / 10⁻³ / 10⁻⁵ Pa (VTL / VMT / VHT). The HF36 resolver is rated for 10⁻⁷ Pa, and custom motor constructions to 10⁻⁷ Pa are available with low-outgassing materials and special vacuum sealing.
Our SLT deep-cryogenic grade is verified at −196 ~ +40 °C using our self-developed low-temperature motor performance test platform. NTL4 covers −80 °C and NTL3 covers −60 °C ambient.
The smallest stepper motor frame is 20 mm (HK2030A / HS2030A, 0.08 kg); the smallest servo motor is the 40 mm 100 W HSK0401A / HSV0401A (0.5 kg).
Stepper motors cover frame sizes 20–86 mm; servo motors span 100 W, 400 W, 750 W, 1000 W and 1800 W at 220 VAC — with 24/48 VDC options on selected models — plus brake and encoder variants.
HD235/HD265 stepper drivers accept pulse/direction signals (0.5 MHz, up to 256 microstepping); HD235R/HD265R add RS-485/RS-232 bus configuration. HFT resolver decoders output ABZ (single-ended or differential) with RS-485. Matched GSHD/SV6 servo drives complete the axis.
Standard prototypes ship within 14 days at mass-production prices, and our fastest proofing-to-production cycle is 10 days.
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