WOYO COMPESSOR
Classic choice, worry free and effortless, industry standard

Can be directly used in equipment such as air compressors and refrigerators.

WOYO COMPESSOR
Exclusive customization, beautiful for you

Every detail is tailored to your needs, making the rotor not only practical but also a showcase of your personality.

WOYO COMPESSOR
The world's largest screw rotor dedicated grinder

Advanced processing equipment, capable of grinding up to a maximum diameter of 510mm, with an accuracy of up to 2 microns.

WOYO COMPESSOR
The heart of the brand, the source of the story

Follow in the footsteps of the founder of this platform for over 50 years, listen to the stories behind the brand, and feel the unchanged original intention and vision.

scroll down

The pain point of screw rotor processing

Screw rotor processing difficult reasons

Picture Name

Complex structure and difficult design

Picture Name

High material requirements, difficult to choose

Picture Name

Complex process, multiple processes

Picture Name

High precision requirements, demanding processing equipment

Picture Name

Difficult to detect, need professionals

Picture Name

Cost control is difficult

What are the conditions for a pair of well-meshed screw rotors?

What conditions should a pair of screw rotors with good meshing have?

Picture Name

① Excellent end profile design

② Know How process

③ Radial circular runout of bearing gear at both ends is less than 5μm

④ High-precision tooth profile grinding machine equipment processing

⑤ The meshing clearance shall be uniform

Why choose us?

Choose all the problems of Depa, we help you solve, 50 years focus on screw rotor technical services

Picture Name

One-stop service

We provide one-stop service for the whole process from raw material procurement to processing and production, and then to quality inspection, so that you can enjoy an efficient and convenient production experience, and ensure that every step is improved to meet your needs.

Picture Name

Appropriate material selection

We select high quality alloy materials and strictly control the material characteristics to ensure that the screw rotor not only has high durability, but also has stable performance, providing stable and reliable power support for your equipment and meeting high-demand application scenarios.

Picture Name

Patented line

Using the self-developed patented line design, combined with the unique tooth structure, we greatly optimize the gas transmission efficiency, significantly improve the overall efficiency, for your equipment to bring stable performance and efficient operation.

Picture Name
Picture Name
Picture Name

stable operation

Using advanced manufacturing technology and precision assembly technology, our screw rotor runs smoothly, greatly reducing the risk of failure and downtime, ensuring continuous and efficient production, and escorting your business stability.

Picture Name

High speed and unaffected performance

Optimize the dynamic balance and structure of the rotor, increase the upper limit of the speed, enhance stability, reduce vibration, and greatly improve the production capacity of the equipment. Fine adjustment guarantees high-speed and smooth operation, reduces maintenance costs, and extends life. This strategy meets the demand for efficient production, improves production capacity, enhances competitiveness, promotes the development of intelligent manufacturing, and meets the fast-paced production requirements of modern industry.

Picture Name
Picture Name
Picture Name

high precision

Using high-precision processing equipment, we strictly control the dimensional tolerance of the screw rotor to ensure accurate meshing, stable gas sealing performance, significantly improve compression efficiency, and bring efficient and stable operation performance to your equipment.

Picture Name

Low noise

Using special surface treatment technology and optimized rotor profile design, we can effectively reduce the mechanical friction and airflow impact noise during operation, create a quieter and more comfortable working environment for you, and improve the overall work efficiency.

Picture Name

Can significantly reduce energy consumption

With efficient line design and precision manufacturing process, we significantly reduce internal leakage and energy loss, effectively reduce the energy consumption of equipment operation, achieve significant energy saving effect, add green power to your business.

Picture Name

CUSTOM TYPE

Custom Type

The screw rotors produced by Depa Precision are widely used in air compressors, refrigerators, blowers, expanders, vacuum pumps, heat pumps and other equipment, and play a key role in many industries such as chemical industry, metallurgy, and new energy. Contribute to the development of the global industry.

VIEW MORE →

Screw rotor processing process

Depa precision screw 50 years focus on screw rotor

Xinfeida

Services available

Our screw rotor technical team works with you to find the best solution

Customization ability

Our screw rotor technical team works with you to find the best solution

Xinfeida

Micron Accuracy

Ability to customize items

Unit

Minimum grinding diameter

35mm

Max. grinding diameter

510mm

Maximum grinding wheel width

210mm

Maximum milling diameter

630mm

Maximum grinding length

2750mm

heaviest rotor

1500kg

Maximum speed

14000rpm

Highest accuracy

2μm

About Us

Depa Precision, a subsidiary of Wuyangsaide, focuses on the field of screw rotor foundry. With more than 50 years of research and development of screw rotor processing technology, it has focused on presenting high quality screw rotor solutions to global customers since its inception. Its business scope covers the whole process service from the preliminary conceptual design to the final product delivery.

The company is equipped with a series of world-leading precision machining and testing equipment to ensure the highest quality and high precision of products. Among them, the special grinder for the world's larger screw rotor introduced jointly with Xi 'an Jiaotong University is particularly noticeable. Its processing accuracy can reach an astonishing 2 microns, the maximum grinding diameter is 510mm, and the maximum length is 2.7 meters. At the same time, the production line also has advanced equipment such as German KAPP grinder, Italian (SU) screw rotor grinder, Japan NIGADA horizontal dual-table four-axis precision machining center, and Hexcon three-coordinate measuring instrument.

VIEW MORE →

Processing Equipment

The company is equipped with a series of global advanced precision processing and testing equipment to ensure the ultra-high quality and high precision of the products.

Production R & D

Germany KAPP screw rotor grinding machine

Qualification Honor

Germany EMAK(SU) screw rotor grinding machine

Service Support

British HolroydZ500 screw rotor grinder

Service Support

EXAGON three coordinate measuring instrument

50 yearsFocus on screw rotor

Has the world's largest screw rotor grinding machine, the maximum grinding diameter of 510mm, micron precision!

Tailor-made for China's aircraft,14000rpm refrigeration screw rotation

VIEW MORE →

Customization process

Depa precision screw 50 years focus on screw rotor

Picture Name

Requirements Communication and Confirmation

Communicate with customers, clarify the customization requirements of screw rotors, and provide preliminary plans and suggestions accordingly.

Picture Name

01

Picture Name

Design and Scheme Development

According to the requirements of the design of the screw rotor end face line and other software and its processing drawings, and determine the corresponding manufacturing process and process plan.

Picture Name

02

Picture Name

Material selection and preparation

According to the design scheme, select the appropriate material and carry out the necessary pretreatment.

Picture Name

03

Picture Name

Process planning

According to the design drawings and material characteristics, the best screw rotor processing route is worked out.

Picture Name

04

Picture Name

Sample production and validation

Before mass production, it is usually necessary to make samples for testing to verify the feasibility of the design and the rationality of the process. And confirm with the customer.

Picture Name

05

Picture Name

Mass production

After the sample passed the test, mass production began. The manufacturing process may also involve other processing processes, such as heat treatment, surface treatment, etc.

Picture Name

06

Picture Name

Quality Inspection

During and after the production process, a series of strict quality inspections are required to ensure that its performance and quality meet customer requirements.

Picture Name

07

Picture Name

Engagement detection

The meshing detection of the screw rotor, including the meshing gap, hardness, surface roughness and other indicators of the test.

Picture Name

08

Picture Name

Packaging and delivery

The screw rotors that have passed the inspection are deburred, put on anti-rust oil, packaged, and then delivered to the customer in the agreed manner and time.

Picture Name

09

Partners

Our screw rotor technical team works with you to find the best solution

11
10
9
8
7
6
5
4
3
2
1

News

Depa precision screw 50 years focus on screw rotor

Company News


2025

01-14

Wuyang Saide provides screw rotors to the Institute of Coal Chemistry, Chinese Academy of Sciences

This cooperation is not only a recognition of Wuyang Saide's technological strength, but also a strong support for the scientific research work of the Institute of Coal Chemistry, Chinese Academy of Sciences. Both sides work together to promote technological innovation and contribute to the country's scientific and technological progress and industrial development.

2025

01-14

Wuyang Saide provides screw rotors to the Institute of Coal Chemistry, Chinese Academy of Sciences

This cooperation is not only a recognition of Wuyang Saide's technological strength, but also a strong support for the scientific research work of the Institute of Coal Chemistry, Chinese Academy of Sciences. Both sides work together to promote technological innovation and contribute to the country's scientific and technological progress and industrial development.

2025

01-14

China's largest refrigeration unit enterprise collaborates with Wuyang Saide

Through this cooperation, both parties will share resources, complement each other's advantages, and jointly develop more efficient and environmentally friendly refrigeration products, injecting new vitality into China's refrigeration industry. This cooperation will undoubtedly have a profound impact on the development of China's refrigeration industry.

2025

01-14

The world's largest screw rotor grinder is located at Depa Precision.

The world's leading screw rotor grinder, with its unparalleled machining accuracy and efficient performance, has officially entered the industry leader Depa Precision. The introduction of this world-class equipment not only demonstrates Depa Precision's strong strength in the field of screw rotor manufacturing, but also marks another important milestone in its pursuit of ultimate craftsmanship and excellent quality.

2025

01-14

Depa Precision became a supplier of screw rotors to Atlas.

Depa Precision, with its excellent technical strength, exquisite workmanship and strict quality control, has successfully become a reliable screw rotor supplier of Atlas. This cooperation is not only a recognition of Depa Precision's leading position in the field of screw rotor manufacturing, but also a recognition of its long-term commitment to technological innovation and excellent quality.