DLY linear bearing flanged aluminum slides are shaft-guided linear motion units designed for smooth sliding on hardened round linear shafts. The product combines a flanged linear bearing structure with a compact aluminum housing, making it suitable for light automation equipment, small sliding tables, fixture movement, packaging machinery, measuring devices, and other applications that need simple installation and low-friction linear motion.
Compared with a separate linear bearing and custom-machined mounting seat, a flanged aluminum slide offers a more convenient installation form. The flange face allows the unit to be fixed directly with screws, while the internal ball bearing structure supports repeated linear movement along the shaft. It is a practical solution for equipment where space, weight, assembly efficiency, and cost control all matter.
What Is a Linear Bearing Flanged Aluminum Slide?
A linear bearing flanged aluminum slide is a mounted linear bearing component used together with a round shaft. The bearing allows balls to circulate between the internal raceway and the shaft surface, reducing sliding resistance and helping the moving part travel smoothly in a straight line.
The flanged body provides a ready-made mounting face. This makes the product easier to install than a bare linear bearing, especially when the bearing must be connected to a plate, bracket, small carriage, inspection fixture, or other moving structure. For compact equipment, the integrated mounting design can reduce machining work and simplify assembly.
This product is different from a linear guideway block. A linear guideway block runs on a profiled rail and is usually selected for higher rigidity and higher moment load. A flanged aluminum linear bearing slide runs on a round shaft and is often selected for simpler structures, lighter loads, easier replacement, and more flexible installation.
Structural Features
Flanged Mounting Design
The flange provides a direct screw-mounting surface, allowing the slide unit to be fixed to a machine plate or moving component. This structure improves installation convenience and helps keep the bearing position stable during repeated motion. Round, square, and H-type flange forms are commonly used according to the mounting space and direction of load.
Smooth Motion on Round Linear Shafts
The internal linear bearing uses steel balls to reduce friction between the slide and the shaft. When matched with a hardened, ground, and properly aligned linear shaft, the slide can provide smooth movement with low starting resistance. Shaft quality, lubrication, cleanliness, and installation alignment directly affect running feel and service life.
Lightweight Aluminum Housing
The aluminum body helps reduce moving weight while keeping the slide easy to install. This is useful for compact automation equipment, light-duty positioning units, and mechanisms where excessive moving mass may affect response speed or motor load.
Compact and Easy to Replace
Flanged linear bearing slides are often used in equipment that needs simple assembly and convenient maintenance. When the shaft diameter, mounting holes, and flange dimensions are confirmed correctly, replacement is straightforward and does not require redesigning the whole guide structure.
Common Models and Selection Logic
DLY supplies different flanged linear bearing slide forms for round shaft systems. Model selection is mainly based on shaft diameter, flange shape, installation space, stroke direction, load condition, and whether a standard or extended bearing length is required.
| Model Type | Flange Form | Main Advantage | Typical Use |
|---|---|---|---|
| LMH...UU | Round flange | Balanced mounting and compact structure | General shaft-guided sliding mechanisms |
| LMH...LUU | Round flange, long type | Longer bearing length for improved support | Applications needing better guiding stability |
| LMK type | Square flange | Easy plate mounting with four screw holes | Fixtures, small carriages, automation plates |
| LMF type | Round flange | Simple circular flange layout | Light machinery and compact guide systems |
For selection, the first step is to confirm the shaft diameter. The inner diameter of the bearing must match the shaft size. Then confirm the flange shape and mounting hole position according to the plate design. For longer stroke, higher offset load, or applications where the moving part may tilt, two slides on parallel shafts or a longer bearing type may provide better stability.
LMH flanged linear bearing series model reference. Final dimensions should be confirmed according to the required shaft diameter, flange form, and installation space.
How to Choose the Right Flanged Linear Bearing Slide
| Selection Item | What to Confirm | Why It Matters |
|---|---|---|
| Shaft diameter | Inner diameter of the slide must match the linear shaft | Incorrect matching may cause looseness, tight movement, or abnormal wear |
| Flange type | Round, square, or H-type mounting structure | The flange must fit the machine plate and available screw positions |
| Bearing length | Standard or long type | Longer types can improve support for some applications but require more installation space |
| Load direction | Radial load, offset load, and moment load | Round shaft slides are not the same as profile rail guide blocks; high moment loads need careful structure design |
| Shaft support | Unsupported shaft or supported shaft system | Long unsupported shafts may deflect and affect running accuracy |
| Working environment | Dust, chips, moisture, speed, and lubrication condition | Contamination and poor lubrication are common causes of noise and short bearing life |
Matching with Linear Shafts
The performance of a flanged linear bearing slide depends strongly on the matched shaft. A hardened and ground linear shaft provides a suitable running surface for the internal balls. If the shaft surface is rough, bent, too soft, or poorly aligned, the slide may become noisy, feel tight, or wear quickly.
For short and light-duty movement, a single shaft with one or two slides may be enough. For wider moving plates, two parallel shafts with multiple slide units are usually more stable. During installation, the two shafts should be kept parallel, and the slide units should not be forced into position by tightening screws against misalignment.
DLY can supply matching linear shafts, linear bearings, and linear slider components for customers who want to confirm the shaft and slide together.
Typical Applications
Linear bearing flanged aluminum slides are commonly used in light and medium-light linear motion structures where a round shaft guide is enough for the working load. They are suitable for mechanisms that need smooth repeated movement but do not require the high rigidity of a profiled linear guideway.
| Application | How the Slide Is Used |
|---|---|
| Packaging machinery | Guiding small moving plates, pushers, adjustment parts, and feeding structures |
| Testing fixtures | Supporting repeated manual or motor-driven sliding movement |
| Printing and labeling equipment | Helping guide compact moving assemblies with low friction |
| Measuring devices | Providing smooth shaft-guided travel for lightweight measuring or positioning parts |
| Small automation modules | Used in simple sliding units where compact installation and easy maintenance are important |
When to Use This Product Instead of a Linear Guideway
A flanged aluminum linear bearing slide is a good choice when the structure uses round shafts, the load is moderate, the installation space is simple, and cost-effective linear movement is more important than maximum rigidity. It is also convenient for equipment where the shaft can be mounted directly through the moving structure.
A profiled linear guideway is usually a better choice when the equipment needs higher rigidity, higher moment load capacity, compact high-load support, or better accuracy under heavy cutting or heavy offset load. For uncertain applications, DLY can help compare a round shaft slide structure with a linear guideway structure according to load, stroke, installation space, and budget.
DLY Supply Support
Zhejiang DLY Automation Manufacturing Co., Ltd. supplies linear motion components including ball screws, linear guideways, linear shafts, linear bearings, linear sliders, shaft supports, ball screw supports, and related accessories. For flanged linear bearing aluminum slides, DLY can support model confirmation based on shaft diameter, flange form, bearing length, quantity, and application conditions.
Customers can provide drawings, shaft diameter, stroke length, load direction, installation space, and working environment. DLY will help confirm whether a standard flanged linear bearing slide is suitable, or whether a matched shaft and slide assembly should be selected together for better installation reliability.
FAQ
Q: Can this flanged linear bearing slide replace a linear guideway block?
A: It depends on the application. A flanged linear bearing slide is used with a round shaft and is suitable for simple, light-duty, and cost-effective linear movement. A linear guideway block is better for higher rigidity, higher moment load, and compact high-load structures.
Q: What shaft should be used with this slide?
A: It should be used with a hardened and ground round linear shaft. Shaft diameter, surface hardness, straightness, and surface finish directly affect sliding smoothness, noise, and bearing life.
Q: How do I choose the correct model?
A: Start with the shaft diameter, then confirm the flange shape, mounting hole layout, bearing length, load direction, and installation space. For wider plates or offset loads, two shafts and multiple slide units are usually more stable.
Q: Why does the slide feel tight after installation?
A: Common reasons include shaft misalignment, poor parallelism between two shafts, uneven screw tightening, contaminated shaft surfaces, insufficient lubrication, or incorrect shaft tolerance. The slide should not be forced to compensate for installation error.
Q: Is an aluminum housing strong enough?
A: Aluminum housing is suitable for many light and medium-light applications because it reduces weight and simplifies installation. For heavy load, high impact, or high moment load applications, the complete guide structure should be checked before selection.
Q: Can DLY supply the shaft and slide together?
A: Yes. DLY can supply flanged linear bearing slides together with matching linear shafts, shaft supports, and related linear motion components, helping customers reduce model mismatch during purchasing and assembly.
Need Help Selecting a Linear Bearing Flanged Aluminum Slide?
Send us the shaft diameter, required stroke, flange type, load condition, quantity, and application details. DLY can help confirm a suitable flanged linear bearing slide or provide a matched linear shaft and slide solution.
Email: export@dlybearing.com
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