Technical Specifications & Core Performance Parameters (Universal Standard Series Benchmark)

• Motor Type: Three-Phase Frameless Permanent Magnet Synchronous Torque Motor
• Winding Insulation Class: F Class 155°C maximum allowable winding temperature
• Magnetic Rotor Material: High-energy neodymium iron boron rare earth permanent magnet, maximum operating temperature 120°C
• Standard Voltage Winding Options: 48VDC low-voltage, 230VAC medium voltage, 480VAC high voltage
• Continuous Torque Output Range (TM Series Full Line): 0.5Nm ~ 500Nm matching different frame size sub-models
• Peak Transient Torque Output: 2.2× continuous rated torque (2-second maximum sustain)
• Maximum Mechanical Rotational Speed: 300rpm ~ 800rpm based on sub-model frame size
• Torque Density Index: 50% higher than same volume housed servo motors
• Rotor Inertia Range: 0.001kg·m² ~ 12kg·m² frame size dependent
• Allowable Mechanical Air Gap Between Stator & Rotor: 0.2mm ~ 0.4mm (strict assembly tolerance control required)
• Operating Ambient Temperature: -40°C ~ +80°C with matched liquid cooling jacket; 0°C ~ +40°C natural convection air cooling
• Storage Temperature Range: -45°C ~ +90°C
• Certifications: UL, CE, RoHS industrial environmental compliance certification

Material Composition

1. Stator Core: 0.35mm thin silicon steel laminated stator stack, low iron loss high magnetic permeability material
2. Stator Winding: Enameled copper round wire with double polyimide high-temperature insulation coating
3. Rotor Substrate: High-strength non-magnetic stainless steel rotor hub
4. Permanent Magnet: Sintered NdFeB rare earth magnet with nickel-copper-nickel anti-corrosion plating surface treatment
5. Winding Insulation Resin: High-temperature epoxy vacuum impregnation resin to fix winding and eliminate vibration noise
6. Terminal Lead Wire: Multi-strand silicone insulated high-temperature resistant shielded motor cable

Structural Features

1. Frameless split dual-component structure: Independent stator winding assembly and independent permanent magnet rotor assembly, no integrated housing, bearing or end cover
2. Hollow center through-hole design for mechanical wiring, hydraulic pipeline and transmission shaft penetration inside motor rotor
3. External stator outer circle reserved screw mounting holes for direct embedding inside mechanical equipment housing
4. Rotor inner circle keyway mounting structure for direct press-fit connection with equipment output transmission shaft
5. Ultra-thin stator lamination stack reduces iron loss torque ripple, low cogging torque design smooth low-speed rotation
6. Vacuum epoxy impregnated stator winding eliminates winding vibration friction noise during high-frequency reciprocating rotation

Working Principle

1. Three-phase alternating sine wave current input to stator distributed winding generates rotating alternating magnetic field
2. High-energy neodymium iron boron permanent magnet rotor produces fixed polarity static magnetic field; stator rotating magnetic field and rotor permanent magnetic field generate electromagnetic torque to drive rotor mechanical rotation
3. Closed-loop servo drive controls three-phase current amplitude and phase angle to adjust output torque, rotational velocity and rotor absolute position precisely
4. Direct mechanical connection between rotor and equipment load eliminates intermediate transmission links (gearbox, timing belt, reducer), realize zero mechanical backlash transmission
5. Low cogging torque electromagnetic design minimizes torque ripple under low-speed operation to ensure ultra-smooth precision positioning motion

Function Characteristics

1. Frameless embedded mechanical integration design reduces overall equipment transmission system volume by 40% compared with housed servo motor plus reducer solution
2. Zero-backlash direct drive transmission eliminates positioning error and elastic deformation caused by gear/reducer clearance
3. Ultra-high torque density output provides large continuous torque at low rotational speed without mechanical reduction gearbox amplification
4. Hollow center through-hole compatible with complex equipment internal pipeline, cable and transmission shaft layout requirements
5. Low cogging torque electromagnetic design achieves stable rotation under <1rpm ultra-low speed without obvious velocity jitter
6. Compatible with liquid cooling jacket customized assembly for high-torque continuous 24-hour heavy-load operation

Advantage Highlights

1. Eliminate maintenance cycle of gearbox lubrication oil replacement, reduce equipment long-term operation maintenance cost by 80%
2. Zero mechanical backlash improves positioning repeat accuracy to ±1 arc-second level for precision rotary indexing equipment
3. Embedded frameless structure optimizes mechanical equipment compact layout, reduce overall machine size and weight
4. High torque density realizes large torque output under limited installation space constraints for robot joint miniature design
5. Low vibration low noise operation, maximum operating noise 20dB lower than equivalent power housed servo motors with reducer
6. Wide temperature winding and permanent magnet material compatible with extreme low-temperature medical and outdoor automation equipment operating environment

Applicable Industries

Installation Requirements

1. Separate stator and rotor assembly during mechanical embedding installation; strict control 0.2~0.4mm uniform air gap between stator inner circle and rotor outer circle, no eccentric offset allowed
2. Stator outer circle fixed via reserved mounting screw holes inside mechanical housing, uniform torque screw fastening to avoid stator core deformation
3. Rotor inner circle press-fit onto equipment transmission shaft with interference fit tolerance specified in sub-model datasheet; uniform press force applied to prevent permanent magnet cracking
4. Motor three-phase winding lead wire minimum bending radius ≥8 times cable outer diameter to avoid enamel insulation layer fracture
5. Install independent high-resolution absolute encoder or resolver at rotor non-output end for closed-loop position feedback signal collection
6. Liquid cooling jacket mandatory for continuous torque output above 50% rated torque; cooling fluid temperature maintained within 20°C ~ 40°C

Usage Precautions

1. Strictly avoid hard collision impact to rotor permanent magnet surface during installation; impact causes magnet chipping and demagnetization permanent performance degradation
2. Forbid eccentric air gap between stator and rotor exceeding 0.5mm; uneven air gap generates unbalanced magnetic pull leading to severe mechanical vibration
3. Do not operate winding temperature exceeding 155°C continuous state; over-temperature causes permanent magnet irreversible demagnetization and winding insulation breakdown
4. Three-phase motor wiring must connect to matched Kollmorgen servo drive with vector control algorithm; direct connection to industrial AC mains causes instant winding burnout
5. Conduct annual air gap eccentricity inspection and rotor permanent magnet surface anti-corrosion coating visual check
6. Avoid continuous operation above maximum rated mechanical rotational speed; over-speed centrifugal force detaches permanent magnet from rotor hub