In precision machining, assembly, and measurement environments, quality is influenced not only by the performance of equipment and the skill of operators, but also by the surrounding temperature and humidity conditions. Even slight temperature fluctuations can cause materials and workpieces to expand or contract, potentially resulting in measurement errors and reduced machining accuracy.

Asia Maintenance (AMA) considers environmental control a critical component of quality assurance and has installed Orion Machinery’s PAP-R Series precision air conditioning system since the establishment of its factory. By maintaining stable temperature and humidity conditions in areas where measurement and precision assembly are performed, AMA ensures consistently high machining quality.

Orion Machinery – Precision Control Built on Cooling and Vacuum Technologies

Orion Machinery is a long-established industrial equipment manufacturer in Japan. Originally founded as Japan’s first dairy equipment producer, the company leveraged the core technologies it developed for dairy systems and milking machines—particularly in cooling and vacuum applications—to expand into industrial machinery such as vacuum pumps, chillers, and air dryers. Today, it delivers proprietary energy-efficient solutions to markets worldwide.
Currently, the company’s core business centers on temperature control and vacuum technologies, including:
• Chillers
• Air dryers
• Vacuum pumps and blowers
• Precision air conditioning systems

Under the corporate slogan, “Innovation through Cooling and Vacuum,” Orion Machinery continues to strengthen and expand its presence in these fields. Established in 2011, its Thai subsidiary serves as a key hub for production, sales, and after-sales service throughout Southeast Asia.

▲ Orion Machinery’s Thai subsidiary: Orion Machinery Asia Co., Ltd.

The “PAP-R Series” Precision Air Conditioner: Delivering High-Accuracy Temperature Control and Energy Efficiency

The PAP-R Series is a precision air conditioning system designed to provide highly accurate temperature and humidity control—performance that is difficult to achieve with conventional air conditioning systems. It is ideally suited for applications requiring stringent environmental conditions, such as inspection, precision machining, and assembly.

【Key Features of the PAP-R Series】
✓ Precise temperature and humidity control to maintain a stable constant-environment condition
✓ Energy-efficient design incorporating heat pump balance control (Super Reheat specification) and inverter technology
✓ All-in-one configuration for simplified installation and commissioning; control panel, sensors, and remote controller included as standard

PAP-R Series Specifications Overview

The Impact of Precision Air Conditioning on AMA’s Quality Control

At AMA, we have a strong commitment to both technical expertise and the manufacturing environment (factory) to deliver the highest quality products to customers. From the time the factory was established, two PAP-R Series units have been installed.

▶Asia Maintenance - Factory Details

In particular, the following environmental conditions are maintained in the constant-temperature room and measurement room where spindle repairs are performed:
• Constant-Temperature Room: 25°C
• Measurement Room: 23°C

★Temperature accuracy maintained within ±0.2°C (at the air outlet)

▲ Temperature and Humidity Control in AMA’s Measurement Room

▲ Constant-Temperature Room (Left) and Measurement Room (Right)

By minimizing temperature fluctuations in iron materials through the use of precision air conditioning, AMA ensures stable measurement accuracy and improved process reproducibility. Thorough temperature and humidity control is a critical factor supporting AMA’s machining quality and represents one of its core strengths.

▲ Overview of Asia Maintenance’s Factory Facilities

On-Site Demonstrations and Comprehensive Local After-Sales Support

The PAP-R Series precision air conditioning system is distributed through Idaka (Thailand), AMA’s affiliated trading company. Currently, AMA is the only Japanese engineering company in Thailand to have installed the PAP-R Series, offering customers the valuable opportunity to observe the equipment in operation and verify its performance in a real working environment. In close collaboration with the manufacturer, Orion Machinery, a robust local after-sales service system has been established. From installation to ongoing maintenance, one-stop support is provided within Thailand—offering customers confidence and peace of mind when considering implementation.

▲ PAP-R Series Precision Air Conditioning Units Installed at Asia Maintenance (2 Units)

Environmental Investment Supporting the Next Stage of Precision Machining

In recent years, as machining accuracy and technical standards continue to advance in Thailand and across Southeast Asia, the need for precise temperature and humidity control has grown rapidly. In areas of environmental management that were once considered secondary, the PAP-R Series precision air conditioning system now represents a critical investment—supporting the next level of quality improvement and energy efficiency.

For companies considering the implementation of precision air conditioning systems in Thailand, or seeking to enhance the accuracy of machining, assembly, or inspection environments, we invite you to contact Asia Maintenance. We offer flexible support, including on-site equipment demonstrations and consultations tailored to your specific requirements.

▲ In Front of the PAP-R Unit (From Left: Mr. Shirai, Orion Machinery; Mr. Yoshida and Mr. Sakakura, AMA)

ORION MACHINERY ASIA CO., LTD.
Yasushi Shirai
Managing Director

ASIA MAINTENANCE CO., LTD.
Nobuyuki Yoshida
Sales Department / General Manager

Keishi Sakakura
Sales Department / General Manager