Find Linear Bearings by Shaft Diameter, Type and Mounting Style
Below you can find DLY linear bearing products by bearing series, shaft diameter, flange style, open or closed structure and application requirement. If you cannot confirm the model, please send the shaft diameter, old bearing model or sample photo.
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![Open Type Linear Bearing]()
Open Type Linear BearingOpen Type Linear Bearing: Shaped like a straight cylinder with axial slits on the surface, this bearing is designed for applications requiring clearance adjustment and is available in both large and -
![Oval Flange Linear Bearing]()
Oval Flange Linear BearingLMH Series Oval Flange Linear Bearings – Compact, high-precision linear motion solution with an oval flange for easy mounting in tight spaces. -
![LM Series Linear Bearing]()
LM Series Linear BearingLM Series Linear Bearing is a widely used linear motion bearing designed for smooth, precise movement along a hardened linear shaft, with standardized sizes such as LM10UU, LM12UU, LM20UU, LM25UU and -
![Round Flange Linear Bearing]()
Round Flange Linear BearingRound Flange Linear Bearing is a high-precision linear motion component featuring a round flange design for easy mounting and accurate positioning. It enables smooth, low-friction movement along a -
![Square Flange Linear Bearing]()
Square Flange Linear BearingSquare Flange Linear Bearing1.Model：LMK /LMKC/LMKE/LMKEC2.Place of origin：China3.City：LishuiWe accept non-standard customization -
![Precision Linear Bearings]()
Precision Linear BearingsPrecision Linear Bearings are high-precision linear motion components designed to provide smooth, stable, and accurate linear movement. By using rolling contact of balls or rollers between the guide
How to Choose the Right Linear Bearing
A linear bearing should be selected according to shaft diameter, bearing series, open or closed structure, flange style, load direction, working environment, lubrication requirement and order quantity. If the bearing is used for replacement, the old model or sample photo can help reduce matching mistakes.
Shaft Diameter
The bearing bore size must match the linear shaft diameter, such as 10mm, 12mm, 16mm, 20mm or 25mm.
Bearing Structure
Choose standard, open type, flanged, long type or precision bearing according to the installation structure.
Load and Travel
Load direction, travel length and support method affect bearing life and running stability.
Working Environment
Dust, moisture, speed and lubrication conditions should be checked before selecting a bearing.
Linear Bearing Types DLY Can Supply
DLY supplies common linear bearing types for round shaft motion systems.
LM Series Linear Bearing
Standard cylindrical linear bearing used inside housings or mechanical structures.
View LM SeriesOpen Type Linear Bearing
Used with supported shafts or supported rails where shaft support cannot pass through a closed bearing.
View Open TypeRound Flange Linear Bearing
Round flange structure for direct mounting and compact bearing installation.
View Round FlangeSquare Flange Linear Bearing
Square flange bearing for stable plate mounting and easier fixing.
View Square FlangeOval Flange Linear Bearing
Oval flange bearing for narrower installation space and compact fixing positions.
View Oval FlangePrecision Linear Bearings
Used when smoother movement, better consistency and stable running performance are required.
View Precision BearingsLinear Bearing and Linear Shaft Matching
Linear bearings should be used with hardened and ground linear shafts. A normal soft steel rod may cause fast wear, poor smoothness or unstable movement. For better running performance, the shaft diameter, hardness, surface condition and straightness should match the bearing requirement.
Open Type vs Closed Type Linear Bearings
Closed type linear bearings are commonly used with unsupported round shafts. Open type linear bearings are often used with supported shafts or supported rails, especially for longer travel systems where the shaft needs additional support.
Closed Type Linear Bearing
Full cylindrical structure for round shafts without continuous support underneath.
Suitable for common light to medium-duty shaft motion systems.
Open Type Linear Bearing
Bearing body with an opening slot for supported shaft or supported rail systems.
Suitable when longer shafts need support to reduce bending.
Flanged Linear Bearing Options
Flanged linear bearings are selected when the bearing needs to be mounted directly to a machine plate or bracket. The flange shape should match installation space, fixing holes and equipment structure.
Round Flange Linear Bearing
Suitable for compact direct mounting and simple round flange fixing structures.
Square Flange Linear Bearing
Suitable for stable plate mounting where a square fixing surface is preferred.
Oval Flange Linear Bearing
Suitable for narrower mounting space and compact equipment structures.
Load, Clearance and Running Smoothness
Linear bearings are commonly used in light to medium-duty round shaft systems. Running smoothness and service life are affected by load direction, shaft hardness, bearing clearance, lubrication, dust condition and installation alignment.
Load Direction
Side load, moment load and poor alignment may shorten bearing life.
Bearing Length
Long type bearings or multiple bearings can improve support stability.
Lubrication
Proper lubrication helps reduce noise, wear and running resistance.
Dust Protection
Dust and particles may increase wear, especially in open equipment structures.
Where Are Linear Bearings Used?
Linear bearings are used in round shaft motion systems where smooth movement, simple installation and cost-effective guidance are required. They are commonly matched with hardened linear shafts in small and medium-duty motion structures.
Related Round Shaft Motion Components
Linear bearings are often purchased together with linear shafts, shaft supports, supported rails and slider units. DLY can help buyers confirm matched parts according to shaft diameter and installation structure.
Inspection Before Linear Bearing Delivery
Before delivery, DLY checks model consistency, appearance, movement smoothness, dimensional matching and packaging condition. For export orders, anti-rust treatment and secure packaging are important for long-distance transportation.
Step-by-Step Linear Bearing Ordering Guide
To help DLY confirm your quotation faster, please send the bearing model, shaft diameter, bearing type, flange style, quantity, packaging requirement and application information when available.
Send Model or Shaft Size
Send the old bearing model, shaft diameter or sample photo.
Confirm Bearing Type
Confirm standard, open type, flanged, long type or precision bearing.
Check Matched Parts
Check whether linear shaft, shaft support, supported rail or slider unit is needed.
Confirm Quantity
Confirm quantity, packaging, destination country and delivery requirement.
Receive Quotation
DLY provides model suggestion, quotation, lead time and packaging information.
FAQ About Linear Bearings
What is the difference between a linear bearing and a linear guideway?
A linear bearing normally runs on a round shaft. A linear guideway uses a profile rail and guide block. Linear bearings are usually simpler and more economical, while profile guideways provide higher rigidity and better moment load capacity.
What shaft should be used with a linear bearing?
Linear bearings should be used with hardened and ground linear shafts. A normal soft steel rod may cause fast wear, poor smoothness or unstable movement.
How do I choose the right linear bearing size?
The bearing bore size should match the shaft diameter. If you are not sure, please send the shaft diameter, old bearing model or sample photo.
When should I choose an open type linear bearing?
Open type linear bearings are often used with supported shafts, especially for longer travel systems where unsupported shafts may bend.
What is the difference between round, square and oval flange linear bearings?
The main difference is the mounting shape. Round flange bearings are compact, square flange bearings provide a stable mounting face, and oval flange bearings are useful for narrow installation space.
When should I choose a long type linear bearing?
A long type linear bearing can provide better support stability when the moving part needs longer bearing contact or improved guidance.
What information is needed for a linear bearing quotation?
Please send the bearing model, shaft diameter, bearing type, flange style, quantity, destination country and any special packaging or matching requirements.
Need Linear Bearing Price or Model Matching?
Send DLY your linear bearing model, shaft diameter, bearing type, flange style, quantity or sample photo. Our team can help confirm suitable linear bearing options before quotation.
Zhejiang DLY Automation Manufacturing Co., Ltd. is well-known as one of the leading linear bearing manufacturers and suppliers in China. Please feel free to buy high quality linear bearing made in China here and get pricelist from our factory. For customized service and OEM/ODM service, contact us now.
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