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Rated speed 1000r/min Rated output 4.2kw HF-SP421B power servo motor
HF-SP421BDescription
The HF-SP421B is a high-performance, medium-inertia brushless AC servo motor engineered for precise position, speed, and torque control in demanding industrial automation systems. It operates on 3‑phase 200 V AC input, delivering a rated output power of 4.2 kW with a rated torque of 40.1 Nm and a rated speed of 1000 rpm (max 1500 rpm). Equipped with an 18‑bit high‑resolution absolute encoder, built‑in electromagnetic brake, and IP67 environmental protection, this motor ensures stable dynamic performance, accurate positioning, and reliable operation in harsh industrial environments. It is designed for medium‑power, high‑torque applications requiring smooth acceleration/deceleration and consistent motion control.
HF-SP421B Key Features
Medium Inertia Design: Balances high torque output and dynamic response, ideal for heavy‑load, medium‑speed motion systems.
High‑Resolution Encoder: 18‑bit absolute encoder (262,144 pulses/rev) for ultra‑precise positioning and low‑speed stability.
Built‑in Electromagnetic Brake: Provides safe holding torque when power is off, preventing unintended axis movement and enhancing operational safety.
IP67 Protection Rating: Fully sealed against dust ingress and temporary water immersion, suitable for wet, dusty, and harsh industrial environments.
High Overload Capacity: 3× rated torque (120 Nm) peak output for short‑duration heavy loads and rapid acceleration demands.
Low Vibration & Noise: Precision rotor balancing and optimized winding design for smooth, quiet operation across speed ranges.
Robust Thermal Design: Efficient heat dissipation supports continuous duty operation at rated load without derating up to 40°C ambient temperature.
Standard Flange Mount: 176 × 176 mm standard flange for easy mechanical integration and compatibility with common mounting setups.
Wide Compatibility: Works with standard servo amplifiers supporting position, speed, and torque control modes via pulse or analog command inputs.
HF-SP421B Materials & Applications
Materials
Housing: High‑strength die‑cast aluminum alloy with corrosion‑resistant coating, ensuring rigidity and thermal conductivity.
Rotor & Stator: High‑grade silicon steel laminations for low iron loss and high magnetic efficiency; high‑temperature resistant copper windings.
Shaft: Precision‑ground hardened alloy steel, high wear resistance and concentricity; equipped with oil seal for IP67 sealing.
Encoder: Industrial‑grade absolute optical encoder with sealed housing for dust/moisture resistance.
High‑precision X‑Y/Z positioning tables and machine tools
Injection molding machines, die‑casting machines
Material handling systems, conveyors, hoists, and elevators
Packaging machinery, printing, and textile equipment
Semiconductor manufacturing and assembly equipment
Large automation machinery requiring high torque and stable motion control
HF-SP421B Important Parameters
Parameter
Specification
Part Number
HF-SP421B
Motor Type
Brushless AC Servo Motor, Medium Inertia
Rated Output Power
4.2 kW
Rated Torque
40.1 Nm
Peak Torque
120 Nm (3× rated, 3 sec max)
Rated Speed
1000 rpm
Maximum Speed
1500 rpm
Rotor Inertia
0.0164 kg·m²
Input Voltage
3‑phase AC 200 V, 50/60 Hz
Rated Current
24 A
Encoder Type
18‑bit Absolute Encoder
Brake
Built‑in Electromagnetic Holding Brake
Protection Rating
IP67 (entire housing, shaft‑side oil‑sealed)
Ambient Temperature
0 °C to +40 °C (continuous operation, no derating)
Insulation Class
Class B
Mounting Flange
176 × 176 mm (standard square flange)
Shaft End
Straight shaft (standard)
Dimensions (W×H×D)
176 × 237.1 × 332 mm
Weight
Approx. 16.5 kg
Cooling Method
Natural air cooling
Frequently Asked Questions:
1. Q: Do you provide warranty for the goods?
A: Yes, we provide warranty for all the goods from us.We offer one year warranty for New items,6 months warranty for Used items.
2. Q: Could you provide technology support?
A: We're in this field many year. If there's any problem, please contact with us,we'll provide suggestion from our engineer to help you solve problem.
3. Q: Do you keep goods in stock or only trading?
A: We have large warehouse for goods and keeping lots of goods in warehouse, so we could delivery the items in short lead time.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Importer,Exporter,Trading Company,Seller
Year Established:
2010
Total Annual:
1000000-5000000
Employee Number:
100~120
Ecer Certification：
Active Member
Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ... Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays, dirves,encoder, servo drive,soft starter,touch screen,instrument,process control,electric transmission and factory automation aspects of the project design,software programming,technical service and ...
