Core Performance Advantages
Shanghai Jwell machinery Workshop co-operation projects

High-precision die-casting, full adaptability
Using a 200T cold chamber die-casting machine and high-precision molds (with mold processing accuracy of ±0.02mm) for molding, the dimensions of the key holes and cavities of the product are strictly controlled within ±0.05mm; before leaving the factory, the finished product is fully inspected by a three-coordinate measuring instrument to ensure precise assembly clearance with the main shaft bearings, shaft bodies, etc., and no additional grinding or adjustment is required during assembly, directly achieving "ready for use upon installation", significantly improving the assembly efficiency of the equipment.

Strong and lightweight material, balancing performance and cost
Using ADC12 high-strength die-cast aluminum alloy as the raw material, this material has mechanical properties such as tensile strength ≥ 220MPa and Brinell hardness HB ≥ 80, which can stably withstand the vibration and radial load generated by the main shaft's high-speed operation (up to 12000r/min main shaft); at the same time, the aluminum alloy density is only 1/3 of cast iron, reducing the overall load of the main shaft by approximately 40% compared to the same specification cast iron head shell, which can also reduce the equipment's operating energy consumption and balance the structural strength and lightweight requirements.

Integrated structural design, balancing functionality and durability
·Top hexagonal protrusion + multiple sets of positioning installation holes: suitable for standard wrench tools, enabling quick locking and fixation with the main shaft base, with a positioning deviation of less than 0.03mm;
·Internal stepped precision cavity: conforming to the assembly form of the main shaft bearings, with an inner wall smoothness of Ra ≤ 1.6μm, reducing friction resistance during the main shaft's operation;
·Side reinforcement structure: further strengthening the head shell's resistance to deformation, avoiding problems such as structural loosening and increased gaps after long-term high-load operation.
Product Structure Analysis
Each structure of the main shaft housing head shell is designed around the main shaft function:
Top functional area
The hexagonal protrusion on the top facilitates tool force application during assembly, and the auxiliary holes on both sides can be combined with positioning pins to achieve precise alignment between the head shell and the main shaft base;
Main cavity area
The stepped inner wall perfectly matches the contour of the main shaft internal components, ensuring both component installation stability and sufficient heat dissipation space;
Bottom connection area
The connection surface with the main shaft rear end structure is precisely ground, with a plane error of less than 0.02mm, avoiding axial movement after assembly.
Applicable Application Scenarios
CNC machine main shaft system
Suitable for the main shafts of vertical machining centers and CNC lathes, capable of stably supporting the high-speed cutting operation of the main shaft, reducing the impact of cutting vibration on processing accuracy, especially suitable for batch processing scenarios of precision parts (such as electronic component housings, hardware accessories).
Industrial robot transmission main shaft
Suitable for the end effector main shaft of articulated industrial robots, lightweight material can reduce the load on the robot joints, and the strong structure can meet the high-frequency and high-speed operation requirements of the robot, ensuring the stability of grasping and handling actions.
Automated production line equipment main shaft
Suitable for the main shafts of automated grinding and drilling equipment, the integrated structure can withstand the long-term continuous operation of the production line, reducing the risk of production line shutdown due to structural failures.
Our Press Casting Factory's Service Capabilities
As a professional press casting manufacturer, for this main shaft housing head shell, we can provide full-chain support:
Mold Development
Our mold design team with over 10 years of experience. We can quickly complete customized mold development based on your spindle parameters, with a mold delivery cycle of ≤ 15 days;
Standardized Production
The production process strictly follows the steps of "press casting → mechanical deburring → precision milling → surface sandblasting / polishing → comprehensive quality inspection", and the defect rate of each batch of products is controlled within 0.3%;
Full-Dimensional Quality Inspection
In addition to size inspection, it also includes material composition spectroscopy analysis, hardness sampling tests, vibration simulation condition tests, etc., to ensure product performance meets standards;
Delivery and After-sales
For bulk orders (≥ 500 pieces), the delivery time is ≤ 20 days. We provide 12 months of quality guarantee. If assembly failures are caused by product issues, they can be replaced or reworked for free.
FAQ
Q: Which types of spindles can this main shaft housing cover be compatible with?
A: This product is defaultly compatible with mainstream CNC machines (lathes, machining centers), industrial robots, and automated equipment spindles on the market; it also supports customized development based on the spindle drawings/parameters provided by you, and can be adapted to non-standard spindles.
Q: What are the core advantages of the ADC12 aluminum alloy used in this main shaft housing?
A: ADC12 is a commonly used high-performance aluminum alloy in the casting industry. The advantages of using it for this main shaft housing are: Strong mechanical properties: tensile strength ≥ 220 MPa, hardness HB ≥ 80, capable of withstanding the vibration and load of the spindle's high-speed rotation; Lightweight: density is only 1/3 of cast iron, which can reduce the overall load of the spindle and reduce equipment energy consumption; Good casting performance: easy to form complex cavity structures, ensuring precise fit between the head shell and the spindle components.
Q: Can the head shell be customized based on our spindle drawings?
A: Yes. We support full customization development: you only need to provide the assembly dimensions, structural requirements, etc. of the spindle drawings, and our mold design team will issue a customized plan within 3 working days. The mold development cycle is ≤ 15 days, and the small batch trial production cycle is ≤ 5 days.
Q: What quality inspections will be conducted before the product leaves the factory?
A: Every head shell before leaving the factory will undergo a full process inspection: Dimensional inspection: three-coordinate measuring instrument detects key dimensions such as holes and cavities, with tolerance controlled within ±0.05mm; Material inspection: spectrometer analyzes the aluminum alloy composition to ensure material compliance; Performance inspection: sampling hardness tests and vibration simulation conditions tests are conducted to ensure structural stability.
Q: How long is the delivery cycle for bulk orders?
A: The delivery cycle is adjusted according to the order quantity: Small batch (50-500 pieces): ≤ 10 days; Large batch (500 pieces or more): ≤ 20 days (specifically, it can be adjusted according to your schedule negotiation).
Q: Is there a need for special tools for installing this head shell?
A: No. The hexagonal structure on the top of the head shell is compatible with standard wrenches, and the auxiliary holes on both sides can be used in conjunction with regular positioning pins. The installation can be completed directly using common workshop tools, without the need to specially equip special tools.
Q: How is a quality problem with the product handled?
A: We provide a 12-month quality guarantee: if the installation failure or structural damage is caused by the product's material/processing issues, you can contact us. We will respond within 24 hours and replace the new product or handle it for rework free of charge.
Ningbo Zhouchi Vehicle Industry Co., Ltd. was founded in 1992, located in Binhai Industrial Park of the beautiful coastal port city -Ningbo. Now our company covers the total area of 16000 square meters, with 150 staffs, including 20 quality inspectors and engineers. Our turnover is around12 Millions USD. Our company specializes in Aluminum Die-casting and Zinc Die-casting, CNC machining and assembling.
Quality Assurance
We have 100% quality guarantee to customers. We will be responsible for any quality problem.
Competitive Prices
We offer ODM service for customer with good quality and reasonable price.

12MLN
Estimated Turnover
150+
Professional Staff
100+
Annual Production of Molds
70%
For Export
our certifications
ISO 14001:2015
The ISO 14001:2015 certificate is an internationally recognized document that indicates that an organization has established, implemented, maintained, and continuously improved an environmental management system (EMS) that complies with the requirements of ISO 14001:2015.
This certificate certifies that the environmental management system of this organization has met international standards, enabling it to systematically manage its environmental responsibilities and commit to sustainable development.

IATF16949:2016
IATF 16949:2016 is an international standard for quality management systems in the automotive industry. It was developed by the International Automotive Task Force (IATF) and was released in October 2016, replacing the previous version of ISO/TS 16949:2009.
The core objective of IATF 16949 is to continuously improve, prevent defects, reduce variations and waste in the automotive supply chain. It aims to ensure that the design and manufacturing of automotive products (including components and materials) can always meet customer requirements and even exceed customer expectations.

our Partners
Our company has established long-term friendly and cooperative partnerships with Suzuki China factory, Peugeot China factory, Schneider Electric and other foreign and domestic well-known enterprises.
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