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SCL/AJL-UU Series Extended / Adjustable Aluminum Slide Unit

Home · Products · Linear Motion Slide Units · SCL/AJL-UU Series Extended / Adjustable Aluminum Slide Unit
SCL/AJL-UU Series Extended / Adjustable Aluminum Slide Unit

SCL/AJL-UU Series Extended / Adjustable Aluminum Slide Unit

The SCL/AJL-UU series are extended-slide type boxed ball slide units, encompassing two main functional types:
SCL-UU series: Extended standard fixed-type boxed unit. Utilizes an extra-long slide body, providing superior load capacity, torque resistance, and operational stability beyond standard lengths.
AJL-UU series: Extended adjustable-clearance type boxed unit. Building on the high performance of the extended slide, it integrates an axial clearance adjustment mechanism, allowing users to fine-tune the preload after installation for zero-clearance, high-rigidity transmission. This is the ultimate solution for long-life, high-dynamic applications.

Technology

Core Features and Advantages Comparison

Performance Characteristics SCL-UU Series (Extended Fixed Type) AJL-UU Series (Extended Adjustable) Core Values and Selection Guide
Core Positioning A standard solution featuring high load capacity, high rigidity and exceptional stability. A high-load, zero-backlash, serviceable, extended-length precision adjustable solution. Choose the SCL for ultimate rigidity; choose the AJL if, in addition to ultimate rigidity, you require zero backlash and long-term precision retention.
Core Structure Extended, one-piece fixed slide block. The significantly increased length of the slide block provides a large contact area with the guide rail, resulting in exceptional resistance to overturning moments and torsional loads. Extended adjustable slide block. Side adjustment screws are integrated into the extended structure, allowing fine-tuning of internal clearance and preload. ‘Extended length’ is the cornerstone of performance, whilst ‘adjustability’ ensures precision. The combination of the two enables the system to cope with the most demanding operating conditions.
Load Capacity and Rigidity Extremely high. The extended design provides greater load and torque capacity, as well as higher static and dynamic rigidity, resulting in minimal deformation under off-centre or cantilevered loads. Building on the high rigidity of the SCL series, backlash can be eliminated through adjustment, achieving equally high rigidity in both directions. It is the ideal choice for heavy loads, high acceleration, or complex force scenarios.
Smooth Operation and Precision Excellent. The multi-point support provided by the long slide block and guide rail ensures exceptionally smooth and stable operation, with good damping properties that effectively absorb vibrations. Excellent, with controllable and recoverable precision. The adjustable feature ensures optimal operating conditions are maintained over the long term, counteracting wear. Provides a rock-solid motion platform for high-precision machining, measurement and assembly.
Service Life and Precision Retention Long. The larger contact area reduces the load per unit area and the wear rate. Longer service life. The adjustment function allows for the compensation of minute clearances caused by wear after prolonged use, restoring initial performance and significantly extending the effective service life of the unit. The AJL series offers a “long-term precision warranty” for equipment, reducing total cost of ownership.
Typical Applications Bases for large-scale testing equipment, cutting heads for heavy-duty laser cutters, and precision assembly presses. Accessory axes for high-precision CNC machine tools, semiconductor wafer handling manipulators, and heavy-duty robotic seventh-axis guidance. Both serve as core motion components for heavy-duty precision equipment; the AJL is suitable for applications with contract-level requirements for long-term precision.

Technical Details: The Dual Advantages of "Extended" and "Adjustable"
1. Mechanical Advantages of "Extended":
Greater torque capacity: The extended slide is equivalent to increasing the load-bearing lever arm, more effectively resisting overturning moments.
Higher system natural frequency: The increased structural rigidity raises the natural frequency of the entire motion system, making it less susceptible to external vibrations and providing better dynamic response.
Error averaging: The long slide better averages out the small straightness errors of the guide rail itself, resulting in smoother operation.
2. Operational Value of "Adjustable":
The adjustment mechanism of the AJL series is similar to the AJ series, using side adjustment screws to push an internal wedge block, achieving nanometer-level precision clearance adjustment.
Users can easily perform adjustments after equipment installation, during use, or during regular maintenance, ensuring optimal performance at all times.

Applications
SCL-UU series (Extended Fixed Type): Suitable for applications with heavy loads, stable working conditions, and where rigidity requirements far exceed those for backlash requirements.
Moving gantry of heavy-duty measuring machines.
Adjustment mechanism of large optical platforms.
Guiding base for heavy-duty linear modules.
AJL-UU series (Extended Adjustable Type): Suitable for applications with heavy loads and extreme requirements for motion accuracy, bidirectional positioning consistency, and long-term reliability.
Lifting axis of the rotary worktable of high-precision horizontal machining centers.
Precision lifting axis of FPD panel handling equipment.
Key pressing axis of aerospace component assembly machines. The SCL/AJL-UU series extended/adjustable aluminum slide unit is a landmark in the deep development of box-type sliding unit technology towards "heavy-duty" and "precision" applications. It is no longer merely a tool for saving installation time, but a critical functional component that directly determines the upper limit of the core performance of heavy-duty equipment.
Choosing the SCL series means you are selecting a "high-rigidity, high-stability motion foundation" for your equipment, capable of supporting heavy loads and maintaining stability.
Choosing the AJL series means you are adding "intelligent, active maintenance of perpetual precision" to this foundation. This is a solution prepared for heavy-duty precision applications where failure is not an option.

Parameters

Model No. Main dimensions and Mounting dimensions (mm) Basic Load Rating Weight
kg
h D L W H G N A E B C S1×e S2 dyn.c stat.c0
SC8L-UU SC8L-AJ-UU 11 17 58 34 22 18 7 6 5 24 42 M4×8 3.4 431 784 0.102
SC10L-UU SC10L-AJ-UU 13  20  68  40  26  21  28  46  M5×12 4.3  588  1100  0.18 
SC12L-UU SC12L-AJ-UU 15  21  70  42  28  24  6.5  5.75  30.5  50  M5×12 4.3  813  1570  0.25 
SC13L-UU SC13L-AJ-UU 15  22  75  44  30  24.5  6.5  5.5  33  50  M5×12 4.3  813  1570  0.24 
SC16L-UU SC16L-AJ-UU 19  25  85  50  38.5  32.5  36  60  M5×12 4.3  1230  2350  0.4 
SC20L-UU SC20L-AJ-UU 21  27  96  54  41  35  11  40  70  M6×12 5.2  1410  2740  0.570 
SC25L-UU SC25L-AJ-UU 26  38  130  76  51.5  42  12  11  54  100  M8×18 1610  3140  1.2 
SC30L-UU SC30L-AJ-UU 30  39  140  78  59.5  49  15  10  58  110  M8×18 2450  5490  1.48 
SC35L-UU SC35L-AJ-UU 34  45  155  90  68  54  5.5  18  10  70  120  M8×18 2650  6270  2.2 
SC40L-UU SC40L-AJ-UU 40  51  175  102  78  62  20  11  80  140  M10×25 8.7  3430  8040  3.2 
SC50L-UU SC50L-AJ-UU 52  61  215  122  102  80  25  11  100  160  M12×25 8.7  6080  15900  6.7 
SC60L-UU SC60L-AJ-UU 58  66  240  132  114  94  30  12  108  180  M12×25 10.7  7000  18000  9.29 

Drawings