FAMILY 01 · SIBLING COMPONENT
1.1 Stepper Motor Bobbins
Precision one-piece injection-molded stator bobbins engineered for hybrid, permanent magnet (PM), and linear stepper motors.
Explore Stepper Bobbins →Home › Products › 01 Bobbins & Insulators › Servo Motor Bobbins
High-Voltage Servo Motor Bobbins & Segmented Stator Insulators
High-dielectric segmented and integral coil formers engineered for industrial AC/DC servo motors, robotic joint actuators, and CNC spindle drives. Formulated with DuPont/BASF modified PPS, LCP, and PA46 to withstand high clamping pressures, CTI ≥ 600V tracking, and 200°C+ continuous thermal loads.
✓ CTI ≥ 600V High-Voltage Insulation
✓ 200°C+ Continuous Thermal Rating
✓ High Core-Clamping Compression Strength
PRECISION TOLERANCE
±0.02mm / 0.12mm Walls
CORE POLYMERS
PPS, LCP, PA46, PA66+GF
SAFETY & COMPLIANCE
UL94 V-0 · CTI ≥ 600V · RoHS/REACH
TOOLING & LEAD TIME
15–25 Days T1 · 7–10 Days Insert Swap
WHY ENGINEERS CHOOSE RUNHENG SERVO INSULATORS
Engineered for High Slot-Fill Factor, High Voltage & Zero Core Deformation
01. CTI ≥ 600V Dielectric Safety
Pre-modified UL94 V-0 PPS and PA46 compounds provide exceptional comparative tracking index (CTI ≥ 600V) and dielectric breakdown resistance for high-voltage servo drives.
02. High Clamping Compression Resistance
Reinforced glass-fiber polymer matrices resist structural cracking or creep under heavy stator lamination stacking and high-tension automated coil winding.
03. Maximized Slot Fill Factor
Thin-walled slot insulation (down to 0.12mm capability) and smooth radiused corners maximize copper winding space while reducing motor iron and copper losses.
04. Segmented & Integral Tooling
Precision multi-cavity molds machined via Swiss Charmilles Wire EDM ensure seamless interlocking between T-tooth segmented stator insulators.
TECHNICAL SPECIFICATIONS
Servo Motor Bobbin Engineering Parameters
Available Base Resins
Modified PPS, LCP, PA46, PA66+GF (15%–35% Glass Fiber) — DuPont / BASF Partners
Flame Retardancy & UL Grade
UL94 V-0 Certified ( down to 0.4mm–0.8mm wall thickness)
High-Voltage Tracking (CTI)
CTI ≥ 600V (PLC 0); 100% Sampling Dielectric Withstand Voltage Tested
Thermal Endurance
200°C–220°C+ Continuous Operating Temperature
Minimum Wall & Tolerance
Wall Thickness Down to 0.12mm; Dimensional Tolerance ±0.02mm
Mold Machining Standard
Swiss Charmilles Slow-Speed Wire EDM & Japanese Sodick Mirror EDM (Zero manual polishing)
Quality & Defect Control
≤ 50 PPM Defect Rate; ISO 9001:2015, ISO 14001:2015, UL Process Certified
Environmental Compliance
Full RoHS & REACH Certified
STANDARD & CUSTOM CONFIGURATIONS
Supported Servo Stator Insulator Configurations
T-Tooth Segmented Stator Bobbins
Interlocking split-core insulators designed for concentrated winding in high-torque density industrial servo motors and robotic joints.
Inquire Segmented Bobbins →
Integral Multi-Slot Servo Insulators
One-piece top and bottom stator end-cap insulators with integrated lead-wire routing channels and terminal pin slots.
Request Custom Quote →
Direct Stator Core Overmolding
In-mold encapsulation directly onto laminated silicon-steel servo stator cores to eliminate air gaps and improve thermal dissipation.
Discuss Overmolding →HOW WE GUARANTEE CONSISTENCY
From High-CTI Compounding to High-Pot Verification
01. High-CTI & Low-Warpage Compounding
Custom glass-fiber orientation and nucleating agent modification minimize anisotropic shrinkage in thin-walled servo slots.
02. Sodick Mirror EDM Cavity Forming
Mirror-grade mold cavities produce 100% burr-free winding channels, protecting thick servo magnet wire from insulation scratches.
03. Stator Fit & High-Pot Voltage QC
Every batch is verified with master stator core gauges, optical CMM measurement, and high-voltage dielectric breakdown testing.
01 / MOTOR BOBBINS & STATOR INSULATORS FAMILY
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FAMILY 01 · SIBLING COMPONENT
1.3 Brushless (BLDC) Motor Bobbins
Dynamic-balanced stator insulators with integrated airflow heat-dissipation ribs for high-speed fans, pumps, power tools, and drones.
Explore BLDC Bobbins →FAMILY 01 · SIBLING COMPONENT
1.4 Transformer Coil Bobbins
0.12mm ultra-thin-wall LCP, PPS, and Phenolic bobbins with pre-embedded terminal pins and 260°C solder-heat resistance.
Explore Transformer Bobbins →DIRECT ENGINEERING SUPPORT
Need Servo Motor Bobbin Samples or Custom Stator Tooling?
Upload or email your 2D/3D stator drawing (STEP, IGES, DWG, PDF) or share your motor frame size. Free standard stock samples are available (freight collect), and custom DFM reviews are returned within 24 business hours.
✓ Free Standard Stock Samples (Freight Collect)
✓ 24-Hour Engineering DFM & Quote Response
✓ 100% NDA Confidentiality Protection
Send Your 2D/3D Drawing or Sample Request
Fill out the project specs below or attach your CAD files. Our engineering team responds within 24 business hours.
