Engineered for consistent slot filling, accurate end-turn geometric forming, and balanced phase clearance. Selected machinery running in motor manufacturing, re-manufacturing, and overhaul plants globally.
Why stator coil intermediate shaping and final end-turn forming dictate operational motor efficiency, dielectric withstand voltage, and mechanical clearance inside electric motor enclosures.
Following coil insertion and slot wedge installation, magnet wires extend erratically from the iron core. Intermediate expanding dies press the coil heads radially outwards and axially flat. This step prevents wire pinch when threading secondary phase winding groups and eliminates slot liner rupture during subsequent processing.
Final forming machines utilize internal expansion cores, external clamping segments, and axial push-down molds. By exerting balanced hydraulic force, the tooling controls three dimensions simultaneously: inner stator bore clearance, outer diameter envelope, and axial overhang height, protecting air gap integrity.
Uncontrolled end turns cause high electric field concentration and mechanical abrasion between adjacent enamel coats. Automated forming sets precise geometric separation between phase coils before final varnishing and lacing, eliminating internal short-circuits caused by electromagnetic vibration.
"In electrical machine construction, end-turn geometry governs heat dissipation, leakage reactance, and motor housing clearance. A deviation of just 1.5 mm in axial coil head flare can cause severe rubbing against cast iron end-shields or disrupt rotor cooling air paths, leading to hot-spot failure."
| Motor Frame Range | Stator Core O.D. (mm) | Max Stack Height (mm) | Shaping Force Mode | Bore Clearance Target | Typical Cycle Time |
|---|---|---|---|---|---|
| IEC 56 – 80 (Appliance / Fan) | ∅ 60 – 120 mm | 10 – 80 mm | Pneumatic / Servo Direct | Bore + 0.35 mm clearance | 2.8 – 4.2 sec / unit |
| IEC 90 – 132 (Agro-Pumps) | ∅ 110 – 190 mm | 40 – 180 mm | Hydraulic 3-5 Ton Clamping | Bore + 0.60 mm clearance | 5.5 – 7.5 sec / unit |
| IEC 160 – 225 (Heavy Mill Drive) | ∅ 180 – 350 mm | 80 – 320 mm | Hydraulic 8-15 Ton Double-End | Bore + 1.20 mm clearance | 9.0 – 14.0 sec / unit |
| Custom Submersible Pumps | ∅ 70 – 140 mm (Slim) | 120 – 600 mm (Long) | Segmented Multi-Stroke Hydraulic | Bore + 0.25 mm high-density | 8.5 – 12.0 sec / unit |
Anna Regina serves as the economic nerve center of Guyana’s Region 2 (Pomeroon-Supenaam). Motor reliability is mission-critical across the coastal agricultural infrastructure, drainage networks, and timber mills.
Large-scale rice mills across Devonshire Castle, Anna Regina, and Bush Lot operate 24/7 during harvest. Induction motors powering hullers, bucket elevators, and polishing aspirators experience extreme silica dust and ambient heat. Stator coil shaping ensures dense, compact end turns that resist abrasive dust build-up and mechanical resonance.
Low-lying coastal plains rely on National Drainage and Irrigation Authority (NDIA) axial and centrifugal flood drainage pumps. Submerged and pump-station motors require rigorous slot insulation and intermediate expanding dies that prevent micro-cracks in enameled copper, preventing moisture-induced insulation breakdown under marine conditions.
Hardwood concessions operating near the Pomeroon River bring high-density Greenheart and Mora logs to coastal mills. Motors driving heavy bandsaws and cyclone blowers face high peak starting torque. Precision forming machines compress end coils rigidly, maintaining slot wedge locking under cyclic shock loads.
High humidity requires durable commercial and industrial air movers, ceiling fans, and cold-storage blowers. Our multi-station automatic winders and dedicated ceiling fan coil forming presses allow local Anna Regina electro-mechanical workshops to produce localized, corrosion-resistant stator packages on site.
As Guyana’s national energy landscape transforms with massive power generation projects and agro-processing incentives, local engineering workshops are modernizing from manual repair to automated precision tooling.
Historically, motor rewinding in rural coastal workshops relied on wooden rawhide mallets and fiber drift tools to beat inserted coils into shape. This manual method damages wire insulation and induces invisible internal stress fractures. The adoption of hydraulic forming dies eliminates manual contact, ensuring standard phase spacing and professional aesthetic finish.
With Guyana’s Gas-to-Energy project and solar minigrids on the Essequibo coast, voltage consistency is improving while efficiency standards are rising. Industrial consumers cannot afford rewound motors with high copper losses caused by elongated, unformed coil heads. Precision shaping reduces mean copper loop length, directly reducing I²R thermal losses.
Long lead times for replacement industrial pump and agricultural motors from North America or Europe drive a strong economic case for self-sufficient local remanufacturing. By installing automated winding, coil expanding, and forming equipment, Anna Regina service facilities can complete full motor overhauls within 24 hours.
Operating from our modern machine tool manufacturing facility in Qishi Town, Dongguan, China, we combine 17+ years of international export pedigree with specialized engineering for electric motor assembly automation.
No generic molds. Every forming die, expanding finger, and inserting blade is precision CNC-machined from Cr12MoV vacuum-hardened die steel, matching your exact stator lamination core drawing, slot dimensions, and wire bundle specifications.
We build control systems utilizing internationally recognized industrial hardware: Siemens, Mitsubishi, Delta, or Omron PLCs with Schneider switchgear and SMC/Airtac pneumatics, ensuring seamless maintenance access and local spare parts replacement in the Caribbean.
From stator slot insulation paper inserting, through high-speed coil winding, synchronized coil and wedge inserting, to intermediate expanding, double-side lacing, and final hydraulic forming — all machines share matched timing cycles and tooling standards.
Prior to export crating, clients send sample stator stacks and magnet wire. Our engineering team conducts full trial runs under production conditions, providing high-definition multi-angle video proof, dimensional inspection data, and cycle time verification.
| Stage | Production Milestone | Technical Objective & Testing Criteria | Export Verification Standard |
|---|---|---|---|
| Stage 01 | Drawing & Slot Geometry Review | CAD verification of lamination core I.D., O.D., slot opening, and stack height | Approved tool fabrication blueprint |
| Stage 02 | Forming Die Design & Simulation | Kinematic simulation of expanding fingers to eliminate copper wire pinch points | SolidWorks 3D interference pass |
| Stage 03 | CNC Precision Tooling Machining | CNC wire-EDM cutting and vacuum heat treatment to HRC 58-62 hardness | CMM dimensional report (±0.01 mm) |
| Stage 04 | Frame & Hydraulic Power Unit Build | Heavy plate welding, vibration stress relief, and hydraulic valve manifold seating | Zero-leakage pressure test at 12 MPa |
| Stage 05 | PLC Logic & Electrical Integration | Wiring to regional voltage (e.g., 220V/440V 60Hz), safety interlocks, optical guards | CE / ISO standard electrical layout |
| Stage 06 | Real Stator Sample Trial Run | Forming client-supplied stators; verification of phase gap, axial height, and bore ID | High-voltage surge & insulation testing |
| Stage 07 | 48-Hour Continuous Dry-Cycling | Continuous automated dry-run testing hydraulic valves, cylinders, and PLC timers | Zero thermal drift / fault free log |
| Stage 08 | Marine Export Packaging | Anti-corrosion VCI barrier wrap, vacuum sealing, and fumigated solid plywood crating | Break-bulk / containerized ocean freight ready |
Practical technical, operational, and commercial answers for electrical engineers, workshop owners, and industrial plant managers considering stator production equipment investments.
We configure our electric motors, hydraulic pumps, and control transformers directly at the factory for Guyana’s power systems. Whether your workshop on the Essequibo coast operates on single-phase 110V/220V 60Hz or industrial 3-phase 220V/415V/480V 60Hz, our electrical systems are customized and fully factory-tested for your exact voltage and frequency before shipment.
Yes. Our forming and shaping machines utilize quick-change modular tooling fixtures. Core inner expansion mandrels and outer forming shoes can be exchanged within 15 to 25 minutes. Adjustable stack-height positioning screws and PLC recipe storage allow seamless switching between different motor frame stacks (e.g., from 40 mm fan stators to 140 mm pump stators).
Equipment is securely crated in solid, fumigated plywood export cases treated for maritime humidity with VCI anti-rust barrier grease. Shipments typically arrive via ocean container vessels at the Port of Georgetown (Demerara). From Georgetown, cargo is transported along the West Coast Demerara highway and across the Essequibo River via the Adventure/Parika ferry corridor directly into Anna Regina.
No. All tooling contact surfaces (expansion blades, forming segments, and push plates) undergo mirror micro-polishing (surface roughness Ra ≤ 0.2 μm) and hard-chrome plating or specialized nitriding. The mechanical movement trajectory expands along the natural bend radius of copper or aluminum wire, completely preventing scuffing, thinning, or enamel peeling.
Every machine comes with a 12-month comprehensive warranty and lifelong technical assistance. We provide step-by-step video training for mechanical commissioning, PLC parameter calibration, and tooling changeover. For warranty spares or replacement wear parts, we support expedited international air courier shipping to Georgetown with ongoing remote engineer guidance.
Absolutely. Because aluminum wire exhibits different elongation and spring-back properties compared to copper, our machines feature programmable hydraulic forming pressure and stroke dwell times via the touchscreen interface. This allows technicians to select tailored forming profiles for aluminum without risk of wire elongation fatigue.
Contact our engineering specialists today with your stator core drawing, stack height specifications, and production capacity targets. Receive a tailored machinery configuration, tooling proposal, and transparent CIF Georgetown freight quote within 9 hours.