DLY Linear Bearing Series Aluminum Slides are shaft-guided linear motion components used with round linear shafts. The series includes closed, open, adjustable and flange-mounted linear bearing options, suitable for different installation structures and maintenance requirements.
With common shaft sizes from 6mm to 60mm, these aluminum slide and linear bearing units are widely used in automation equipment, packaging machinery, printing machines, light-duty linear modules, positioning fixtures and general industrial motion assemblies.
Product Introduction
Linear bearing series aluminum slides are used to build simple, smooth and cost-effective linear motion systems on round shafts. The bearing or slide unit moves along the cylindrical shaft through rolling contact, helping reduce friction compared with plain sliding structures.
This page covers a series of shaft-guided slide options rather than one single model. Depending on the machine layout, the system can use standard closed linear bearings, open linear bearings, adjustable clearance types, flange-mounted bearings or aluminum slide units with integrated bearing housings.
Main Product Types in This Series
Different linear bearing slide types are selected according to shaft support method, mounting direction and available installation space. Closed bearings are suitable for end-supported shafts, while open bearings are used with supported shafts when the rail support passes under the shaft.
| Type | Structure | Suitable Shaft Support | Typical Use |
|---|---|---|---|
| LM / LME closed type | Round linear bearing with closed outer sleeve. | End-supported round shaft. | General light-duty sliding motion, fixtures and small automation axes. |
| LM...OP / LME...OP open type | Open bearing body with a longitudinal opening. | Supported round shaft or shaft rail. | Longer stroke systems where shaft deflection needs to be reduced. |
| LM...AJ / LME...AJ adjustable type | Bearing with clearance adjustment slot. | Round shaft with adjustable fit requirement. | Applications requiring clearance compensation during assembly. |
| Flange linear bearing | Linear bearing with round, square or other flange mounting form. | Round shaft or supported shaft according to structure. | Direct mounting to machine plates, carriages or brackets. |
| Aluminum slide unit | Aluminum housing with built-in linear bearing. | Round shaft systems requiring an integrated mounted block. | Compact shaft-guided modules, light conveyors and positioning structures. |
Product Specifications
| Product Name | Linear Bearing Series Aluminum Slides |
| Main Bearing Series | LM, LME, LM...C, LME...C, LM...AJ, LME...AJ, LM...OP, LME...OP |
| Matched Shaft Diameter | Common sizes from 6mm to 60mm, with additional model options available by specification |
| Shaft Type | Chrome-plated linear shaft, stainless steel shaft, hollow shaft or supported shaft assembly |
| Bearing Rolling Element | Steel balls inside the linear bearing circulation structure |
| Housing / Slide Options | Aluminum slide housing, flange housing, open housing or customized shaft slide assembly according to application |
| Typical Applications | Automation equipment, packaging machinery, printing machinery, fixtures, light-duty modules and general industrial motion systems |
How the Linear Bearing Slide Works
In a linear bearing slide system, the shaft acts as the guide surface and the bearing unit moves along the shaft. The steel balls inside the bearing roll between the shaft and the bearing raceway, reducing friction and allowing the slide to move smoothly in a straight line.
Because the rolling contact area is small, this type of slide is suitable for light and medium-duty motion systems. For high moment load, heavy cutting force or high-rigidity machine tool applications, profile linear guideways should be checked instead.
Model and Dimension Reference
The model should be selected according to shaft diameter, bearing type, mounting structure and required load capacity. The following LM series specification and dimension charts help confirm bearing designation, shaft size, ball circuit, tolerance and basic dimensions.
Closed Type, Open Type and Adjustable Type
The correct bearing structure depends on how the shaft is supported. Choosing the wrong structure may cause installation interference or insufficient shaft support, especially on long-stroke systems.
| Bearing Type | Main Feature | When to Use | Selection Note |
|---|---|---|---|
| Closed type | Full cylindrical outer sleeve. | Shorter stroke, end-supported shaft and simple sliding motion. | Not suitable when the shaft support rail passes through the bearing position. |
| Open type | Opening along the bearing body. | Supported shaft rails and longer stroke systems. | Check opening direction and support rail clearance before installation. |
| Adjustable type | Slot design for fit adjustment. | Assemblies requiring clearance tuning. | Adjustment should be moderate to avoid excessive friction. |
| Flange type | Flange mounting structure integrated with bearing. | Direct mounting to plates, brackets or carriages. | Confirm flange shape and bolt hole pattern before replacement. |
Key Product Features
Simple Shaft-Guided Motion
The linear bearing slide works directly with a round shaft, making the structure easy to understand, install and maintain. It is a practical choice for equipment that does not require the rigidity of profile linear guideways.
Multiple Mounting Forms
Closed, open, adjustable and flange-mounted structures can meet different installation needs. This allows designers to choose a bearing form according to the shaft support method and the available mounting space.
Compatible with Standard Linear Shafts
The series is designed for round linear shafts in common metric sizes. For best performance, the shaft surface hardness, straightness, diameter tolerance and surface finish should match the bearing requirements.
Easy Replacement and Maintenance
Standard model codes make replacement easier when the shaft diameter and bearing structure are known. For worn systems, both the bearing and shaft surface should be checked, because a damaged shaft can shorten the life of a new bearing.
How to Select the Right Linear Bearing Slide
Model selection should start with the shaft diameter, but the shaft support method is just as important. A long unsupported shaft may bend under load, so open bearing units with supported shafts are often preferred for longer strokes or higher load conditions.
| Selection Item | What to Confirm | Why It Matters |
|---|---|---|
| Shaft diameter | 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm and other standard sizes | The bearing bore must match the shaft size. |
| Bearing structure | Closed, open, adjustable or flange type | The structure must match the shaft support and mounting method. |
| Shaft support method | End-supported shaft or supported shaft rail | Longer strokes and higher loads may require shaft support to reduce deflection. |
| Mounting space | Housing width, flange diameter, bolt hole position and slide length | Avoids interference with plates, brackets and surrounding components. |
| Working environment | Dust, moisture, lubrication access and operating frequency | Helps decide whether seals, stainless material or regular lubrication are needed. |
Linear Bearing Slide or Profile Linear Guide?
Linear bearing slides and profile linear guideways are not the same product. Linear bearing slides are simpler and more economical for shaft-guided motion, while profile guideways are usually selected when the machine requires higher rigidity, higher moment capacity and more compact load support.
| Comparison Item | Linear Bearing Slide | Profile Linear Guideway |
|---|---|---|
| Guide surface | Round shaft. | Profile rail with block. |
| Structure | Simple bearing and shaft system. | Higher-rigidity rail and carriage system. |
| Best for | Light and medium-duty motion, fixtures and simple automation. | CNC machines, high-rigidity axes and compact load-bearing systems. |
| Design focus | Shaft diameter, support span and bearing type. | Rail size, preload, accuracy grade and block quantity. |
Applications
Linear bearing series aluminum slides are suitable for equipment where the motion system needs smooth sliding, simple installation and easy replacement. They are widely used in light-duty and medium-duty shaft-guided structures.
FAQ
Q: What is a linear bearing series aluminum slide?
A: It is a shaft-guided linear motion component that moves along a round linear shaft. It may use a standard linear bearing, flange bearing or aluminum housing slide depending on the installation structure.
Q: How do I choose between closed and open linear bearings?
A: Closed bearings are used with end-supported round shafts. Open bearings are used with supported shafts where the shaft support rail passes under the bearing.
Q: Can DLY supply matching shafts and supports?
A: Yes. DLY can supply linear bearings, aluminum slide units, chrome-plated shafts, supported shafts, shaft supports and related linear motion components according to the required assembly.
Q: Is this product suitable for heavy machine-tool loads?
A: Linear bearing slides are more suitable for light and medium-duty shaft-guided motion. For heavy load, high rigidity or high moment load, profile linear guideways are usually a better option.
Q: What information is needed for quotation?
A: Please provide the bearing or slide model, shaft diameter, structure type, quantity, application and whether matching shafts or shaft supports are needed. Photos or drawings are helpful for replacement projects.
Contact DLY for Linear Bearing Series Aluminum Slides
Send your required model, shaft diameter, bearing type, quantity and application. DLY can help confirm the suitable linear bearing slide and matching shaft components for your motion system.
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