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After exploring an incredibly large number of articles and reviews by our powerful Artificial Intelligence & ML platforms; and detailed processing, analysis and rectification by our professional hi-technology experts, the golden shortlist for the Best Linear Motion Guides (2021) is finally drafted.

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In order to obtain the Best Linear Motion Guides (2021), our dynamic platforms and experts have taken many elements into account such as product fitness for use, features that meet consumers needs and give customer satisfaction, freedom from deficiencies or defects, conformance of standards, quality/price ratio, robustness, design quality, quality conformance to user requirements and good practises, health and safety, real user satisfaction and lots of others. It is worth to note that each user has different requirements so please consider the list below as a guideline and not as a gospel. Nevertheless, in the below benchmarking you can definitely find the overall best ones despite your needs.

Our smart platforms and pro technology gurus work hard to provide you with the best product options. We believe that our review evaluation can help you simplify your purchase decision and select among the absolute Best Linear Motion Guides (2021).

Best Linear Motion Guides

Best Choice No. 1
2PCS 8mmX450mm(.315‘’x17.71‘’) Rod,Linear Motion Guide Rail Shaft for 3D Printer, DIY, CNC,Surface Hardened Chrome Treatment, Metric G6 Tolerance(8X450mm)
  • ✦Linear motion rods are manufactured by high-frequency quenching, centerless grinding, and hard chromium plating on the surface. They are widely used in automatic sliding system devices. Using carbon steel substrate (GCr15).
  • ✦Linear motion rods are widely used in automatic transmissions. Due to the hard surface, they can extend the service life of the equipment. They are used in industrial robots, plastic machinery, woodworking machinery, fitness equipment, precision printers, automatic cutting machines, etc.
  • ✦Requirements for linear motion rods: simple design, best execution ability, low maintenance cost, strict selection of durable materials, high-frequency heat treatment, accurate outer diameter, roundness, straightness and surface treatment.
  • ✦Metric G6 tolerance,surface roughness ra 0.3,hardness about HRC 58-64,hardening depth 0.8-2.5mm,stralghtness:MAX 0.1/1000mm,chrome thickness:0.015-0.2mm,roundness:no more than 5μm (Rmax).
  • ✦Beveled at both ends for easy installation and prevents your hands from being injured during installation.
Best Choice No. 2
TEN-HIGH Linear Rail, 1pcs CNC Parts MR7 MGW7 Miniature Linear Guide Rail Way Slide 800mm+1pcs MGW7C Slider Miniature Linear Motion Guide Way
  • Slider with high steel holder,slider move compact
  • Low noise, maintenance-free, long life
  • Bearing Steelsteel, with rust-proof properties
  • can bear the direction of the load, with strong rigidity, high precision
  • Widely use in semiconductor manufacturing equipment, printed circuit boards, IC assembly equipment, medical equipment, robotic arms, precision measurement machine and other small linear motion device.
Best Choice No. 3
Travel Length 100/200/300/400/500mm EBX1605J Double Optical Axis Ball Screw Linear Slide Rail CNC Linear Motion Rail Guide with Nema23 Steppper Motor 1.8° 3A 1.2N.m for CNC Milling Machine (200mm)
  • Model: EBX1605J series double optical axis ball screw linear slide rail
  • Ball screw accuracy: C7; Repeat positioning accuracy: ± 0.03mm;
  • Working Length:200mm; Material: aluminum alloy;
  • Ball screw speed:0-50mm/s; Vertical load:≤ 10KG; Horizontal load: ≤ 50KG
  • With Nema23 57 stepper motor—–1.8°, 3A, 1.2N.m, 4pcs wire
Best Choice No. 4
MGN12 Linear Rail Guide Block, MGN12H Mini Linear Motion Guide Rail Slider Bearing Steel Sliding Block
  • Model: MGN12H
  • This linear rail guide block is very safety and convenient to operate, the lock type of slider fixing mode allows the connection between the slider and the rail to be more tightly and reduce its friction.
  • With the linear rail it can be achieved high precision linear motion under high load conditions.
  • Sliders are widely used in spraying equipment, CNC machine tools, machining centers, electronics, automation machinery, textile machinery, automobiles, medical equipment, printing machinery, packaging machinery, woodworking machinery, mold opening.
  • If your product damaged, we offer the best solution that gives you a new one for free. Any problem with the product in 30 days, can consult with us
Best Choice No. 5
FUYU High Speed Max 3m/s Belt Drive CNC Linear Guide Slide Rail Linear Motion Actuator Stage Router Parts Motorized Nema34 Stepper Motor[2000mm Stroke]
  • Equipped 3 phase flange stepper motor, offer sufficient power, linear module speed can be as fast as 3000mm/s
  • M5 screws on the baseboard and sideway are easy for install and uninstall
  • Silver polished aluminum for avoid rusting,complete sealed with belt structure make dustproof and IP65 waterproof
  • Aluminum made panel ensured stable performance, travel stroke from 200mm to 3900mm
  • Easy maintenance due to belt driven transmission,vertical loading capacit up to 5kg,horizontal loading capacity can be as heavy as 30kg,
Best Choice No. 6
ReliaBot 2PCs 10mm x 700mm (.3937 x 27.56 inches) Case Hardened Chrome Plated Linear Motion Rod Shaft Guide Metric h8 Tolerance
  • The material is carbon steel, which is very suitable for linear motion rod.
  • The surface has been chrome plated to enhance the hardness.
  • Chamfer on both ends, easier to install linear bearings and won’t hurt fingers when installing it.
  • Diameter 10mm, tolerance -0.005mm to -0.03mm ( 9.995mm – 9.97mm)
  • Length 700mm, tolerance ± 0.5mm ( 699.5mm – 700.5mm )
Best Choice No. 7
2pcs Linear Motion Rod Shaft Guide, Hardened Stainless Steel 8mm x 600mm
  • 【FUNCTION】This guide rod is for linear motion, automatic machinery, injection molding machine, etc
  • 【UPGRADE MATERIAL】Made of high quality stainless steel, the linear rod are durable and sturdy
  • 【EXQUISITE SURFACE TREATMENT】The surface is quite smooth, resistant to rust and corrosion
  • 【FEATURE】It is suitable for high speed, low noise and high precision equipment
  • 【WIDELY USED】The applications are extensive, especially in bearing purpose
Best Choice No. 8
High Speed 1000 MM 40 INCH Stroke Belt Drive Linear Guide Rail Motion Slide Actuator Module for CNC Linear Position Kit
  • High precision belt driven linear actuator, the positioning repeatability is ± 0.1mm;
  • Convenient and Easy in use, Smooth operation and low noise,maximum speed 1500mm/s
  • Comes with NEMA 23 motor base(not motor) and foot mounting bracket, free to replace;
  • Standard aluminum alloy profile structure, sandblasted on the surface, beautiful and rustproof, precision hole position CNC processing;
  • Can be directly fold cross slide, gantry sliding table, 3-axis, 4-axis, multi-axis combination in use.
Best Choice No. 9
FUYU FSL40 Linear Guide Slide Table Ball Screw Motion Rail CNC Linear Guide Stage Actuator Motorized Nema 23 Stepper Motor[700mm Stroke]
  • Special made nema 23 stepper motor with max speed up to 1200 rpm
  • Quality ball screw with accuracy up to ±0.03mm,also low noise when working
  • M4 screw on sideways to install end stop,and on base board for easy installnation
  • Oxided aluminum avoid rusting,extra support unit enhanced stability
  • have multi length stroke options from 50mm to 1000mm for cnc router device
Best Choice No. 10
2PCs 8mm x 200mm (.315 x 7.874 inches) Chrome Plated Linear Motion Rod,Aizilean Case Hardened Linear Motion Guide Rail Round Shaft for 3D Printer Parts- Metric h8 Tolerance
  • Round steel shaft for use with linear support blocks and closed type slide units in linear motion applications.
  • The material is carbon steel, which is very suitable for linear motion rod, the surface has been chrome plated to enhance the hardness.
  • Chamfer on both ends, easier to install linear bearings and won’t hurt fingers when installing it.
  • Diameter 8mm, tolerance -0.005mm to -0.03mm ( 7.995mm – 7.97mm).
  • Length 200mm, tolerance ± 0.5mm ( 199.5mm – 200.5mm )

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