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What are the differences between THK linear guides HSR and SHS types? Maoming Precision Machinery explains.

Publish Time：

2022-02-28

HSR type and SHS type THK linear guide The main difference lies in whether there is a ball retainer.

SHS type: slider with ball retainer
HSR type: slider without retainer

For the SHS guide with a ball retainer, because the balls inside the slider are protected by a resin ball retainer, friction between the balls during circulation is avoided, making the balls move in an orderly queue.

In addition, the lubricating oil accumulated in the space between the ball circulation channel and the ball retainer continuously forms an oil film on the surface of the balls, thereby reducing the possibility of oil film shortage.

In all THK linear guides the linear guides without retainers have the highest usability and can be used in various conditions/environments from ordinary to extreme. For example, as long as the correct options are selected, they can be used even in conditions such as vacuum and high temperature where resin parts cannot be used.

Maoming Precision Machinery is the agent of HTPM Kate Precision Machinery, YYC gear rack, and DAMPTAC Detake industrial hydraulic buffer in China, and the general agent of Kate Precision Machinery (HTPM) in Northeast China. The company specializes in Kate guide sliders, linear guides, ball screws, precision worktables, gear racks, industrial buffers and other transmission products.

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Classification of THK linear guides

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Classification of THK linear guides

Latest News

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sj2025-01-08

Linear guide rail - stainless steel guide rail

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Linear guide rail replacement and repair case

sj2024-12-31

Linear guide rail replacement and repair case

The following is a case study of replacing and repairing a linear guide rail: Customer feedback: "The equipment suddenly stopped moving left and right, so it needs repair." Therefore, we went to the site to replace the linear guide rail installed on the equipment. On-site confirmation: A device for processing profiles is installed above the linear guide rail. This device moves left and right using the linear guide rail to process the profiles. However, the guide rail on site could no longer move left and right, preventing it from working. It was visually apparent that the linear guide rail was damaged. When the equipment on the guide rail was lifted with a crowbar and the slider was removed, it was found to be damaged. Due to severe rusting at the mounting points of the slider and rail, it was difficult to remove the slider when disassembling it, which may have caused the damage to the linear guide rail. When we tried moving it again after replacing it with a new slider, the movement was still very poor. It is estimated that simply replacing the slider would not only cause it to be damaged again, but may also damage the rail and rack. Therefore, we informed the customer of the current condition of the equipment, the repair method and the quotation, and persuaded the customer to carry out further repairs. Repair process The equipment was lifted with a crowbar, and wooden blocks were placed under the workbench to prevent the equipment above from falling, and then the slider was removed. When trying to remove the slider, it was quite difficult to move it due to severe rust on the rail. Since the slider could not be removed smoothly, we first removed the rust using sandpaper and rust remover. (The rust on the rail made it difficult to move the slider; if the slider was forcibly moved, it could be damaged.) After the repair and test run, the workbench of the profile processing equipment ran smoothly. Suggestions on how to prevent recurrence of faults Regular inspection of transmission parts is very important to prevent unexpected damage. As a preventive measure, it is recommended to lubricate the guide rail regularly. If not dealt with in time, this kind of rust will occur, which may lead to equipment failure. (Construction site: Gunma Prefecture, Japan) The above is the main content of the repair report. This is a very common after-sales service scenario. Therefore, the questions are: 1. The report believes that the main cause of the failure is rust on the guide rail. Do you agree with this reason? 2. The corresponding measures in the report are: replacing the slider and removing rust from the rail. Is this OK? If you have better suggestions, please leave your comments and suggestions.

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During long-term continuous operation, the wear on the guide surface is minimal, effectively extending the maintenance cycle and service life of the equipment. Even under high-intensity working conditions for extended periods in automated production lines, the SRG series linear guides maintain good performance, reducing equipment downtime and lowering operating costs for businesses. Application Case: Tesla Shanghai Gigafactory Press Line The press production line at Tesla's Shanghai factory uses SRG-L extended guides. Under high-intensity conditions with 24-hour continuous operation, the lubrication cycle is extended to 4500 hours, reducing downtime maintenance by 70% compared to traditional guides. The special surface treatment process extends the guide life to over 30,000 hours, reducing maintenance costs by 40%. III. Application Scenarios: Core Support for High-End Manufacturing 1. 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Medical Imaging Equipment The Siemens SOMATOM Force CT scanner uses SRG silent guides, controlling vibration noise during scanning to below 55 decibels. The low-friction characteristics increase the gantry rotation speed to 0.25 seconds/revolution while maintaining sub-millimeter slice thickness accuracy. IV. Innovation and Upgrades: The Future of Intelligent Transmission The SRG series linear guides use THK's unique advanced manufacturing processes and precision grinding technology to ensure that the matching accuracy of the guide blocks reaches the micrometer level. This high-precision characteristic allows the equipment to achieve extremely precise positioning and movement during operation, effectively avoiding product quality problems caused by errors. In semiconductor manufacturing equipment, the SRG series linear guides can precisely control the handling and processing positions of wafers, meeting the requirements of nanometer-level manufacturing processes and providing strong hardware support for the development of the semiconductor industry. Application Case: Boston Dynamics Robot Boston Dynamics' Spot Mini robot integrates lightweight SRG guides in joint transmission, increasing the payload-to-self-weight ratio by 40%. The integrated displacement sensor monitors the joint status in real time, and the AI algorithm predicts potential failures, improving maintenance efficiency by 60%. V. Industry Benchmark Application Examples From precision machine tools to automated production lines, from medical equipment to semiconductor manufacturing, THK SRG linear guides are driving global industrial equipment towards higher precision and higher efficiency with their revolutionary technological breakthroughs. Choosing the SRG series is not just choosing a transmission component; it is choosing the core competitiveness of the intelligent manufacturing era. If you have any objections or needs, please feel free to contact me. You are also welcome to discuss with me. Contact number: 15524757549 (WeChat synchronized)

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