Customized mold opening for motor casing

Aluminum alloy motor shells are gradually replacing traditional cast iron shells, becoming the preferred shell solution for servo motors, new energy vehicle drive motors, and industrial motors. Shanghai Chuansi Aluminum focuses onHigh-precision motor housing aluminum profile mold opening and customizationFrom mold development and profile extrusion (cooperative production line) to CNC finishing and surface treatment, the entire process is independently controllable.

Core Advantages at a Glance:

• ShuiLightweightIts density is only one-third that of cast iron, and the overall weight of the motor is significantly reduced. New energy vehicles can effectively improve driving range.

• ❄ ️heat dissipation efficientIts thermal conductivity is approximately 5 times that of cast iron, suppressing motor overheating and frequency reduction, and extending its service life.

• ultra-high precisionBearing chamber tolerance ≤±0.03mm, CNC accuracy ±0.01-0.005mm, direct assembly without secondary processing.

• Fast deliveryStandard structures take 7-10 days to produce samples, with a minimum order of 50kg. R&D sampling is supported.

• One-stop serviceThe entire process of extrusion, CNC, and surface treatment is connected to only one window.

Applicable scenarios (matching):

01 A00 Virgin Aluminum Ingot – Ensuring Material Stability from the Source

Produced using A00 grade virgin aluminum ingots, it contains no waste aluminum, and its material purity and mechanical properties are far superior to those of recycled aluminum. Different grades are selected according to motor power, heat dissipation requirements, and operating environment:

New energy vehicle motor shells have higher material requirements, and aluminum alloy materials are an important way to alleviate range anxiety.

02 Dedicated extrusion process for motor housing – ensuring consistent heat dissipation

The extrusion production of motor shells differs significantly from that of ordinary industrial profiles, and there are three core requirements:

1. Accurate inner cavity dimensions→ Compatible with stator core interference fit, eliminating the need for secondary machining.

2. uniform wall thickness→ Ensure consistent heat dissipation throughout the week to avoid localized hotspots

3. Flat end surface→ Fitted with end cap seals to eliminate the risk of leakage.

The temperature and extrusion speed parameters are customized according to the characteristics of the motor shell during the extrusion process, and precision molds are used to ensure uniform wall thickness and stable inner cavity dimensions. The supporting artificial aging process fully releases internal stress, ensuring long-term dimensional stability of the shell after CNC finishing.

Extrusion Capacity:600T-12000T (cooperative production line), maximum circumscribed circle600-700mmWall thickness range1.5-20mm.

03 Five-axis CNC one-time molding – accuracy up to ±0.005mm

Equipped with precision equipment such as a five-axis CNC machining center, it can complete a full range of machining, including precision cutting of motor housings, end face milling, precision boring of inner holes, drilling and tapping of mounting holes, and grinding of end cap mating surfaces.

Multiple imported machine tools andUltra-long machining center travel 6.5 metersTo meet the requirements of one-time clamping processing of the long strip motor shell.

04 One-stop delivery – extrusion + CNC + surface treatment, connected to only one window

From extrusion and CNC finishing to surface treatment, customers only need to connect with one supplier for one-stop delivery:

Provided per batchDimension inspection report + material inspection reportThe quality is traceable.

Complete processing capacity parameters:

Typical application scenarios:

• Servo motor housings (industrial automation, CNC machine tools, robots)

• Stepper motor housing (3D printers, automation equipment, medical instruments)

• New energy vehicle drive motor housing (pure electric/hybrid vehicle)

• Industrial motor housings (water pumps, fans, compressors, elevator traction machines)

• Robot joint motor housing (collaborative robot, service robot)

• Motor housing for automation equipment (conveyor lines, packaging machinery)

• Medical equipment motor housing (surgical instruments, testing equipment)

• Communication equipment motor housing (base station antenna drive, cooling fan)

FAQ (Frequently Asked Questions)

Q1: What are the advantages of aluminum alloy motor housings compared to cast iron housings?

A: Four core advantages: ① Lightweight and weight reduction – the density is only one-third of that of cast iron, making a direct contribution to improving driving range in the field of new energy vehicles; ② High heat dissipation efficiency – the thermal conductivity is about 5 times that of cast iron, effectively suppressing high-temperature frequency reduction of the motor; ③ Maintenance-free appearance – no painting or anti-rust treatment is required, making production more environmentally friendly; ④ High processing accuracy – The dimensional accuracy and consistency of extrusion molding are far superior to those of casting, and the assembly quality is more stable. Extrusion molding is particularly suitableSmall and medium-sized batches, multiple varieties, high precisionCustomization requirements.

Q2: What are the differences between extruded motor housings and die-cast aluminum motor housings?

A: Four core differences: ① Precision - Extrusion molding can reach ±0.02-0.04mm, while die-cast aluminum is usually ±0.1-0.3mm; ② Structural flexibility - extrusion can integrate fins/grooves/cavities into one mold, while die casting is limited by the mold; ③ Density – The extruded tissue is dense and has no pores, while pores and shrinkage may exist in die casting; ④ Suitable for batches – Extrusion dies have low costs and are suitable for small and medium-sized batches; Die casting molds are costly and suitable for large batches. Extrusion molding isSmall and medium-sized batches, multiple varieties, high precisionPreferred process for motor housing.

Q3: How accurate can the aluminum profile for the motor housing be?

A: Key bearing chamber ≤±0.03mm, end cap mating surface ≤0.02mm, conventional size ±0.02-0.04mm, CNC ±0.01-0.005mm. The accuracy depends on: ① the complexity of the cross-section - the more fins there are, the greater the control difficulty; ② Material selection—6061-T6 has better dimensional stability than 6063-T5 after heat treatment; ③ Machining method - five-axis CNC single clamping is better than multiple clamping. Provide drawings or technical requirements, Engineering DepartmentWithin 2 hoursProvide an accuracy evaluation scheme.

Q4: What materials can be used for aluminum profiles for motor housings?

A: Three mainstream materials: 6063-T5 – good formability, high cost performance, suitable for general industrial motors and stepper motors; 6061-T6 – Yield ≥ 240MPa, suitable for high-power servo motors and new energy vehicle motors; 6005-T6 – Good fatigue resistance, suitable for rail transit, heavy-duty motors, and high-frequency vibration conditions. Our company recommends the optimal material solution based on the motor type, power, and operating conditions.

Q5: What is the mold opening cycle and minimum order quantity for aluminum profiles for motor housings?

A: Sampling for routine sections takes 7-10 days, and batch delivery takes 10-15 days after sample confirmation. Minimum order 50kg. The mold opening cycle depends on the complexity of the cross-section: 7-8 days for simple round tubes (single cavity, finless); With heat dissipation fins for 8-10 days; Multi-cavity + integrated cable tray 10-12 days. The molds are made of H13 hot-worked mold steel with a lifespan of ≥50,000 cycles. The mold opening fee will be fully refunded upon reaching mass production volume.

Get the solution nowContact Manager Du:13611846009

Provide drawings or technical requirements, Technical DepartmentWithin 2 hoursProvide material recommendations and accuracy evaluation schemes.
Free sample consultation | Technical solution support | Direct supply from the original factory