Flanged Linear Bearings for Round-Shaft Guidance
These square flange linear ball bearings provide a bolted mounting interface for assemblies that travel along a round guide shaft. The photographs show cylindrical bodies, four recessed flange mounting holes and internal ball circuits. Short and extended body examples allow buyers to compare the installation envelope before specifying the exact bearing.
This is a linear-motion bearing arrangement, not a rotating-shaft insert bearing with shaft-locking screws. Its bore must remain compatible with the intended guide shaft and sliding travel. Send the shaft specification, mounting drawing and operating conditions when requesting selection or replacement support.
Product Specifications and Options to Confirm
| Item | Reference information / quotation requirements |
|---|---|
| Product configuration | Cylindrical linear ball bearing with square flange and four recessed mounting holes. |
| Body formats | Short and extended cylindrical bodies shown. Confirm overall length and flange position for the selected unit. |
| Reference codes | The supplied listing includes E-LBKS / LBKMS and LUU wording. Confirm the complete designation and dimensional drawing rather than assuming these code families are interchangeable. |
| Size references | 8, 16, 20, 25, 30, 35 and 40 appear in the reference listing. Confirm their relationship to bore size and the available designation; they are not a verified dimension table. |
| Materials | A stainless steel retainer is referenced. Confirm retainer, outer body, rolling elements and flange materials individually; the reference does not establish an all-stainless assembly or a specific alloy grade. |
| Guide shaft | Specify diameter, tolerance, hardness, surface finish, straightness, support arrangement and material. |
| Mounting interface | Specify flange width, thickness, hole spacing, recess size, body outside diameter and installation envelope. |
| Fit and movement | State required clearance or preload, travel length, velocity, acceleration, positioning needs and expected duty cycle. |
| Lubrication and sealing | Confirm end-seal configuration, compatible lubricant, maintenance method and contamination protection for the selected unit. |
| Supply scope | Bearing designation and quantity, inspection documents and packaging to be agreed. Guide shafts, mounting fasteners and other components are not assumed included. |
Choose the Body Length and Mounting Envelope Together
Compare the short and long formats against available axial space and the carriage layout. Record how far the body may project behind the flange, whether neighbouring components restrict access and how the shaft passes through the assembly. A longer body is not automatically a higher-rated replacement without data for that exact bearing.
For a replacement enquiry, include the old designation and a drawing of the bore, body diameter, total length, flange footprint and four-hole pattern. Recess depth and fastener-head clearance also matter. Similar-looking square flanges may have different mounting dimensions or shaft-fit requirements.
Shaft and Alignment Requirements
The bearing and shaft form a guidance pair. Define the shaft specification with the bearing supplier, including its surface condition and dimensional requirements. A nominal diameter alone is not enough to confirm running clearance, smooth movement or service life.
Review parallelism and alignment where several bearings or shafts share a carriage. Include bearing spacing and the location of the applied load, not just its total magnitude. Obtain selection data for the actual loading direction and duty. Installation must follow the selected unit’s documentation; do not force the assembly into alignment by tightening flange bolts.
Operating Environment and Maintenance
State travel speed, acceleration, cycle frequency, temperature and exposure to dust, moisture or cleaning chemicals. Confirm the lubricant and sealing arrangement before ordering, and provide access for the specified maintenance method. A stainless retainer does not establish corrosion resistance for every component or suitability for washdown service.
Typical enquiry contexts include linear positioning stages, packaging mechanisms, handling slides and machine-guidance assemblies using round shafts. Accuracy, load capacity and life requirements need a selection review for the complete guide arrangement. No load, speed or precision class is assigned from the photographs.
Inspection and Documentation
Agree checks for bore and body dimensions, flange geometry, mounting-hole pattern, component identity, visible ball-circuit condition and surface finish. State any required running-clearance checks, travel checks, material documents or traceability so the inspection scope can be confirmed before supply. See AODSON quality control and inspection.
Frequently Asked Questions
Is the complete bearing stainless steel?
The supplied reference specifically mentions a stainless steel retainer. Confirm the outer body, rolling elements, flange and retainer separately if an all-stainless construction is required.
Can a long version replace a short version?
Only after checking the designation, shaft fit, body and flange dimensions, installation space and operating ratings. Body length alone does not establish interchangeability.
Is this the same as a square flange rotating-shaft bearing?
No. This product is intended for guided linear travel along a shaft. A rotating-shaft flange bearing has a different function and connection arrangement; the two should not be substituted based on flange appearance.
Request a Linear Bearing Quote
Send your complete designation or sample drawing, shaft specification, flange and body dimensions, required material construction, load direction, travel, speed, environment, quantity and destination. Include clearance or accuracy requirements and whether you need a short or extended body.
