Dual-Row Large Rotary Progressive Die for Automotive Small Motor Rotor

This Dual-Row Large Rotary Progressive Die for Automotive Small Motor Rotor integrates 18-28 stamping stations (including large rotary indexing, blanking, and punching modules) in a reinforced frame, enabling simultaneous stamping of two rotor components per stroke with a dimensional tolerance of ±0.005mm—critical for small motor rotational stability (runout ≤0.01mm) and noise reduction (≤45 dB).

Built on Deaote's 15+ years of expertise in precision mould manufacturing for automotive motor industry, our dual-row large rotary die features wear-resistant SKD11/DC53 steel components with TiCN coating (hardness ≥64 HRC), ensuring a service life of 750,000+ stamping strokes (2.0x longer than standard single-row dies) and zero precision degradation during high-speed production. The optimized large rotary mechanism (rotation repeatability ±0.003°) enables one-step forming of complex small motor rotor profiles (outer diameter 30-80mm), while the dual-row parallel stamping design doubles production output compared to single-row dies, reducing unit production cost by 30% for automotive small motor manufacturers.

Manufactured under IATF 16949:2016 and ISO 9001:2015 quality standards, the die is fully compatible with high-speed automated stamping lines (70-100 strokes per minute) and features integrated in-die inspection systems for real-time quality control of rotor burrs (≤0.008mm). Compatible with all major automotive small motor brands (Bosch, DENSO, Valeo, Mabuchi), it seamlessly integrates into global automotive component manufacturing systems, reducing production scrap rate to 0.08% compared to conventional single-row dies.

Product Series

DT-DRLR1 Series (Window/Seat Small Motor)

±0.005mm accuracy, 750,000 strokes life, 0.1-2kW motor rotors (Ø30-50mm). Dual-row stamping, ideal for passenger car interior small motor production.

DT-DRLR2 Series (Wiper/Cooling Fan Small Motor)

±0.006mm accuracy, 700,000 strokes life, 2-5kW motor rotors (Ø50-80mm). Dual-row stamping, suited for automotive exterior small motor production.

DT-DRLR-Custom Series (OEM Small Motor)

Tailored accuracy (±0.004-0.007mm), custom rotary angle (0-270°), rotor OD (Ø25-90mm). Designed for brand-specific automotive small motor production.

Core Advantages

1. Dual-Row Parallel Stamping for 80% Efficiency Boost

Integrated dual-row stamping channel design enables simultaneous production of two small motor rotor components per stroke, increasing production output by 80% compared to single-row dies (70-100 SPM vs. 60-85 SPM for single-row). This parallel design reduces equipment occupancy and labor costs, lowering the unit production cost of automotive small motor rotors by 30% for mass production lines.

2. Large Rotary Mechanism for Complex Small Motor Rotor Forming

High-precision large rotary indexing mechanism (rotation repeatability ±0.003°) enables one-step forming of complex small motor rotor profiles (eccentricity ≤0.006mm), eliminating multi-process manual repositioning and reducing production lead time by 40%. The compact rotary drive system is optimized for small rotor sizes (Ø30-80mm), ensuring stable operation at high-speed stamping for 24/7 mass production.

3. Automotive-Grade Precision for Small Motor Performance

6-axis CNC machining with ±0.0008mm positioning accuracy and in-die laser gauging systems ensure rotor dimensional tolerance of ±0.005mm—critical for small motor rotational stability (runout ≤0.01mm) and noise reduction (≤45 dB). Consistent precision eliminates post-stamping rework, improving production yield to 99.5% for automotive small motor rotors.

4. High-Hardness Coated Tool Steel for Extended Service Life

Core die components made of SKD11 (cold work steel) and DC53 (high-strength steel) with TiCN coating (hardness ≥64 HRC) deliver 750,000+ stamping strokes—2.0x longer than standard single-row dies (375,000 strokes). The TiCN coating provides high-temperature resistance (up to 450°C) and wear resistance, extending maintenance intervals to 180,000 strokes (vs. 80,000 for conventional single-row dies).

5. Cost-Optimized Design for Small Motor Mass Production

Modular die structure with standardized components reduces mold development cycle by 25% (4-6 weeks vs. 6-8 weeks for custom single-row dies) and maintenance costs by 20%. The die is compatible with low-cost non-grain-oriented (NGO) silicon steel (0.25-0.4mm thickness) commonly used in automotive small motors, balancing precision and production cost for mass production.

6. Full Compatibility with Automotive Small Motor Manufacturing Standards

Compliant with IATF 16949:2016 automotive quality standards and fully compatible with automated material feeding, stacking, and traceability systems (laser marking integration). The die supports all mainstream small motor rotor sizes (Ø30-80mm) and material thicknesses (0.25-0.4mm), meeting global automotive small motor manufacturer requirements (EU REACH, US EPA, China GB/T).

Technical Specifications

Application Scenarios

Deaote's Dual-Row Large Rotary Progressive Die for Automotive Small Motor Rotor is engineered for global automotive small motor manufacturers across diverse sectors:

● Interior Automotive Small Motors: Mass production of 0.1-2kW rotor components for window lift, seat adjustment, sunroof, and mirror adjustment small motors

● Exterior Automotive Small Motors: Production of 2-5kW rotor components for wiper, cooling fan, and headlight adjustment small motors

● Commercial Vehicle Small Motors: Custom stamping of rotor components for truck/bus door lock, air conditioning, and hydraulic pump small motors

● OEM Automotive Small Motor Manufacturing: Custom die solutions for global automotive small motor OEMs (Bosch, DENSO, Valeo, Mabuchi) for brand-specific production