PMI (Precision Motion Industries, Inc.) specializes in manufacturing high-quality linear guideways, commonly referred to as linear bearings. These components are integral to precision machinery, facilitating smooth and accurate linear motion across various industrial applications, including CNC machines, injection molding equipment, and semiconductor manufacturing.
Key Features of PMI Linear Bearings:
High Positioning Accuracy and Repeatability: Utilizing a rolling motion design, PMI linear guideways exhibit a low friction coefficient, minimizing the difference between dynamic and static friction. This characteristic effectively eliminates stick-slip issues during submicron-level movements, ensuring precise positioning and consistent repeatability.
Low Frictional Resistance: The frictional resistance in PMI linear guideways is significantly lower than that in traditional slide guides—approximately 1/20th to 1/40th. This reduction not only enhances motion efficiency but also contributes to prolonged precision over extended periods.
Four-Way Equal Load Capacity: Designed with a 45° contact angle, PMI linear bearings can withstand equal loads in radial, reverse radial, and lateral directions. This versatility allows for flexible installation orientations without compromising performance.
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Self-Alignment Capability: The design of PMI linear guideways accommodates minor installation deviations, enabling automatic self-alignment. This feature enhances accuracy and ensures smooth motion, even under varying operational conditions.
Popular Series and Models:
MSA Series (Heavy Load Type): Engineered for applications requiring high rigidity and load capacity, the MSA series includes models such as:
MSA15SSSFCN: Features a square flange with a compact design, making it suitable for limited-space installations. It includes bi-directional, bottom, and inner seals to maintain optimal performance.
MSA30LSSSFCN: A larger model designed to handle heavier loads, commonly used in CNC machinery due to its high load capacity and precision.
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MSB Series (Compact Type): Ideal for applications where space is constrained but high performance is essential. Notable models include:
MSB15SSSFCN: A compact guideway capable of bearing equal loads in four directions, featuring self-alignment capabilities to maintain accuracy during operation.
MSB20ESSFCN: Offers versatile mounting options with top or bottom installation positions, equipped with bi-directional, bottom, and inner seals for enhanced reliability.
Applications:
PMI linear bearings are widely utilized in industries requiring precise linear motion, such as:
CNC Machinery: Ensures accurate tool movement and positioning.
Injection Molding Machines: Facilitates precise mold movements for consistent product quality.
Semiconductor Equipment: Enables exact positioning necessary for semiconductor manufacturing processes.
For comprehensive specifications and additional information, PMI provides detailed catalogs available for download on their official website.
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By integrating PMI linear bearings into your systems, you can achieve enhanced precision, reliability, and efficiency in your industrial applications.
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