Linear Bearings & Blocks
Ball bushings, carriage blocks and plain linear bearings.
Also searched as: lm8uuball bushinglinear blockcarriageigus bearing
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from $5.00Made-in-China $5.00 -
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HXHV LM8UU Linear Bushing Bearing
Flange Shape: None
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Heavy Duty Linear Ball Bearing Block
Flange Shape: Without FlangeSeries: LME
from $5.00Made-in-China $5.00 -
High Precision Miniature Linear Block Mgw12h
Maximum original length: 1500 mmWidth: 5-15 mm
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Hiwin Miniature Linear Rail Block
Carrying Capacity: Light LevelCertification: ISO 9001, ISO 14001, ISO 14000Corrosion Resistance: Low Corrosion ResistanceHS Code: 8466939000Length: 2 meters
from $5.00Made-in-China $5.00 -
Hiwin P Class Mg7/9/12/15 Series Linear Miniature Guide Way with Block
Class: PSeries: Mg7/9/12/15
from $5.00Made-in-China $5.00 -
from $5.00Made-in-China $5.00 -
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Igus Kglm-16 16mm Bore Spherical Bearing
Axial Bearings: 3000nBore: 16mm
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LM8UU Linear Motion Bearing
Ball Circuit: 6Flange Shape: OvalSize: 8 mm x 15 mm x 24 mm
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LM8UU Linear Motion Bearing Linear Bushing
Bore: 25 mm
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from $5.00Made-in-China $5.00 -
from $8.00Made-in-China $8.00 -
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Linear Bearing Pillow Block
Application: All Kinds of MachineryBrand: ErskCage: Nylon PlasticCertificate: ISO9001:2008Feature: Magnetically, Low Temperature, Corrosion Resistant, High Temperature, High Speed
from $10.00Made-in-China $10.00 -
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Linear Block GHH65HA
Max Length: 4000 mm
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Linear Block HGW15CC
Block height: 24 mmBlock length: 61.4 mmBlock width: 47 mmWeight: 0.17 kg
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Linear Guide Limit Block Clamp
Maximum Length: 4000/6000mmPrecision Grade: C/H/P
from $58.00Made-in-China $58.00 -
Linear Guide MGW15 15mm Width
Width: 15 mm
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Linear Guide Rail 25mm
Length: 4 meters
About linear bearings & blocks
Linear bearings and blocks facilitate smooth, low-friction linear motion. This category encompasses ball bushings, linear plain bearings, and carriage blocks, each suited for different applications based on load, speed, and environmental factors. Ball bushings, often identified by designations like LM8UU or LME16UU, utilize recirculating balls to achieve precise linear guidance, typically on hardened and ground shafts. They are available in open, closed, flanged, and adjustable clearance types, with dynamic load ratings (C) and static load ratings (C0) being critical selection parameters. Carriage blocks, such as those found in profile rail systems, integrate a bearing assembly with a mounting platform, providing high rigidity and load capacity, often specified by their size, series (e.g., HGH, HGW), and preload class. Linear plain bearings, including those made from self-lubricating polymers like Igus iglide materials or bronze alloys, offer quiet, maintenance-free operation for lighter loads or contaminated environments, with selection based on shaft diameter, length, and PV limits. Common materials include hardened steel for ball bushings, aluminum or steel for carriage blocks, and various polymers or sintered bronze for plain bearings. Finishes like chrome plating or corrosion-resistant coatings are available for specific environmental demands.
How to choose
Selecting the appropriate linear bearing begins with defining the motion requirements. First, determine the load capacity: is it light, moderate, or heavy? This dictates whether plain bearings, ball bushings, or profile rail blocks are suitable. Second, consider the required precision and rigidity: profile rail blocks offer the highest, while plain bearings offer the least. Third, evaluate the operating environment: high temperatures, contamination, or washdown conditions may necessitate plain bearings or corrosion-resistant variants. Fourth, specify the shaft diameter or rail size, which directly influences bearing dimensions and load ratings. Finally, assess speed and acceleration demands, as these impact bearing life and heat generation, particularly for ball-based systems, and help in selecting appropriate preload or clearance.