Wipers sweep away dust. IKO LWL9B Linear Ball Bearing Carriage Slide on 79mm Guide Rail 9mm Wide (1) Total Ratings 1. 99 New. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Extra-Wide Ball Bearing Carriages and Guide Rails. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Add a hand brake to lock carriages in position. The linear motion guide bearings are sometimes referred. MGN linear rails are best suited for low load applications, such as 3D printers, pick and place. The easy way out is to design a linear guide system based on ball bushings, which can tolerate imprecise mounting and other misalignments. The basic distinction between “standard” and “miniature” profiled rail guides is the width of the guide rail: profiled rails with a width of 15 mm or less — and the carriages that fit on them — are generally considered “miniature”. T-Slotted Framing LinearBearings and Track Rollers. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Double-row and four-row miniature linear ball bearing and guideway assemblies are full-complement, preloaded linear locating bearings for unlimited stroke lengths. Mount 1 mm wd. Also known as profile rails, they keep carriages aligned and guide them short and long distances with minimal friction. Extra-Wide Ball Bearing Carriages and Guide Rails. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. The. Corrosion-Resistant Side-Mount Track Roller Carriages and Guide Rails. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Slide drawers, panels, and doors with these tracks and rollers. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. These tiny carriages and guide rails are sized for electronic and other precision applications. Sleeve Bearing Carriages and Guide Rails Linear bearings with bended C-profile. Also called guides or ball slides, these low-profile ball bearing carriages have two rows of bearings and four points of contact with the rail. The carriage is slightly too big for the rail, or vice versa. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than other carriages and rails. Dry-Running Positioning Slides for Stepper Motors. Linear slides from isel are optionally supplied with Aluminium or steel body and are available in standard lengths of 70 mm, 100 mm, 150 mm and 200 mm. Convenient for use with devices such as grippers and printing heads, these air slides have a nonrotating head that provides steady motion and a large mounting area. The carriage has dynamic load capacity of 21. Ball-bearing carriages and rail systems create less friction and resist misalignments. Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. Linear Slides & Carriages are a type of mechanical device used to move or guide objects in a linear motion. This linear guide rail is produced from high-quality bearing steel. Ball-bearing carriages and rail systems create less friction and resist misalignments. Linear Motion Slides. Carriage and Guide Rail Type. High-Cycle Ball Bearing Carriages and Guide Rails A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. wide miniature corrosion-resistant. 550 products. Straight rails have close tolerances that support high loads and provide precise ball movement. Thick grease that prevents the balls from rolling freely. In stock and ready to ship. Mount to vertical surfaces for applications where tight tolerances aren't required. Sleeve Bearing Carriages and Guide Rails Ball Bearing Carriages and Guide Rails for Curves For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high- speed, high-load applications. Sizes 07/09/12/15mm (mounting-base width) Available up to 2000mm lengths. They can be modified with accessories in the field without removing the carriage. Ball-bearing carriages and rail systems create less friction and resist misalignments. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. 0. When it comes to 80 mm Linear Guide Rails, you can count on Grainger. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Zaber's LC40 Series of linear guides are recirculating ball bearing guides designed to interface seamlessly with most 40 mm T-slot extrusion framing systems and accessories. Material sliding element: iglide® J. Ball Rail Guides represent the largest group of linear guides in the INA linear technology sales program. In stock and ready to ship. For use in high-pressure applications, this grease prevents wear and corrosion at loads up to 50, 000 psi. Help with linear rail blocks getting stuck. 00. drylin® T guide carriages offer a low cost, maintenance-free alternative to recirculating ball bearings. Image credit: THK Co. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. A preloaded bearing loaded beyond the preload value has the same characteristics as a clearance bearing. Rollers are permanently lubricated to save maintenance time and effort. Also known as profile rails, they keep carriages aligned and guide them short and long distances with minimal friction. SKF. Choose from our selection of linear motion slide blocks, including ball bearing carriages and guide rails, telescoping slides, and more. Choose from our selection of linear motion carriages, including ball bearing carriages and guide rails, mounted linear ball bearings, and more. Sleeve Bearing Carriages and Guide Rails With PTFE sleeve bearings and a low-friction ball screw, these slides don’t require the mess and maintenance of lubrication but still give you precise positioning anywhere along the length of their stroke. These guides fit most band saws. 00. Extra-Wide Ball Bearing Carriages and Guide Rails. Almost all carriages, rails and rolling elements are through hardened. The linear bearing is mounted on either a square or round rail depending on the requirements of the application. 1kN, The Preloaded is specified as 0. Rail width: 170 mm. 1 mm/1000 mm. Profiled track rollers Profiled track rollers without filling slots are used to guide the carriages and support the forces. Profile Rail Linear Guides 500 Series Ball Profile Rail Linear Guide Modular Accessory Options The standard carriage is supplied with low friction double lip seals and longitudinal seals that completely encase the bearing carriage to protect the balls and track surfaces and minimize lubrication loss Optional metal scrapers or wipers, lube. Steel ball bearings are quite common, but plastic linear bearings and guides are increasingly tough so their use is on the rise. Maintenance-Free Ball Bearing Carriages and Guide Rails. Side-Mount Ball Bearing Carriages and Guide Rails. Good service and cheap products are available. Mechanical Drive System. Know your precision, repeatability, loading, and environmental requirements before. Rail length: 72 mm - 4,000 mm. Rail length: 19 mm - 42 mm. They can be modified with accessories in the field without removing the carriage. Carriages with polyethylene bearing have high impact strength and are more abrasion resistant than carriages with a PTFE bearing. Double-row and four-row miniature linear ball bearing and guideway assemblies are full-complement, preloaded linear locating bearings for unlimited stroke lengths. Choose from our selection of mounted linear bearings, linear bearings, ball bearing carriages and guide rails, and more. Mount in any orientation without affecting load capacity. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Considerations for sizing the guide rails and lead screw include withstanding the weight of the loads, using ball bearings to reduce friction, and ensuring a person can manually turn the lead screw with sufficient torque. High-Temperature Sleeve BearingDesigned for use on horizontal surfaces, the contact angle of the ball bearings on the rail allows these carriages to last longer than other carriages. They can be modified with accessories in the field without removing the carriage. . With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. 99 183. $99. THK America Official Online Store264 products. Learn about the different types of guide rails, their. They're good for use in areas where multiple carriages or rails won't fit. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Thanks to the X arrangement with rails and carriages (block), larger differences in height can also be made up. With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. Ball chains can be incorporated into ball screw nuts and profiled rail linear guides to improve running properties and reduce noise. Rubber. $24. 00. Choose from our selection of linear rail bearings, including ball bearing carriages and guide rails, mounted linear bearings, and more. Guide-Rail Way Wipers. • Straight rails through advanced grinding technologies • Simple installation and. In stock and ready to ship. Fixed bearings, heavy-duty version: More information: Drawings: Item selection/filter: Order No. Considerations for sizing the guide rails and lead screw include withstanding the weight of the loads, using ball bearings to reduce friction, and ensuring a person can manually turn the lead screw with sufficient torque. Guide Rail Carriages. Lubrication interval for linear guides with ball chain and grease lubrication. They can be modified with accessories in the field without removing the carriage. Size A1 B B1 D E F H H1 H2 L C0Y N C0Z N CAD. Gantry Rails. The easy way out is to design a linear guide system based on ball bushings, which can tolerate imprecise mounting and other misalignments. loads on carriages or saddles due to initial impact dynamics are considered part of this class of applications as well. Note: Each carriage can only be used with its corresponding guide rail. Ball-bearing carriages and rail systems create less friction and resist misalignments. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. And while standard acceleration limits are 50 m/s 2 (1,968. 3,794 products. They're good for use in areas where multiple carriages or rails won't fit. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. Choose from our selection of rail bearings, including ball bearing carriages and guide rails, track roller carriages and. In general, a particular square-rail component might cost more than the round, but other requirements and the total system cost need to be addressed. Get it as soon as Wednesday,. 99. block body in standard version Overall length of the runner block = 345. Their key advantage is derived from ball conforming grooves on both inner and outer races that increases load capacity relative to standard round. Maintenance-Free Ball Bearing Carriages and Guide Rails. Our guides are made of extruded aluminum profiles, which are aligned using leveling plates or clamped onto a correspondingly precisely machined support plate. The enables both the rollers and carriage to travel together along the guide rail. Description Material: Ball bearing steel Version: Electro zinc-plated. Suitable for clean room use, these ball bearing carriage and guide rails are made entirely of stainless steel. I decided to take it apart to service it and repack/repl. The place pointed by the arrow in the. Properties of the linear guideways series CG: Standard series in O arrangement. They can be modified with accessories in the field without removing the carriage. $799. Bearing carriage (block): The housing for the bearing balls or rollers which is mounted onto the linear guides (rails). Extra-Wide Ball Bearing Carriages and Guide Rails. Align sprockets and roller chain during installation and adjustment. Extra-Wide Ball Bearing Carriages and Guide Rails. Keep hands safely away from table saw blades and router bits by using these tools to guide material during cuts. In most cases drylin® plastic bearings technology is 4 times quieter (-20b) compared to metal. Clean Room Ball Bearing Carriages and Guide Rails. The end cap is constructed of a high-strength, glass-filled nylon with nitrile rubber seal. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Linear motion guide slides are the ones which are also termed as square rail linear bearings and is found including a guide rail along with the carriage unit. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Ball-bearing carriages and rail systems create less friction and resist misalignments. Rail length: 73 µm - 142,000 µm. AUTOMATION & IIOT. Push Blocks and Sticks. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. 7kN. In stock and ready to ship. Standard Carriages and Guide Rails . At a minimum, these items include the expensesThese 500 series profile rails guide single or multiple ball carriage systems. It is the part that supports the tool. Choose from our selection of track rollers and guide rails, track roller carriages and guide rails, ball bearing carriages and guide rails, and more. Run many cycles in tight spaces before replacing or re-greasing carriages. Mount to vertical surfaces for applications where tight tolerances aren't required. Positioning Slides for Universal Robots. Linear ball bearing with internal race, steel, load capacity up to 3,959 kg:profiled guideway linear guide CG series. The 500 Series Ball Linear Guide rail utilizes a special trapezoidal profile that maximizes the carriage cross section, resulting in the highest possible rigidity. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Choose from our selection of locking carriages, including over 90 products in a wide range of styles and sizes. 11 strokes for selection, minimum 100mm, maximum 1050mm, maximum speed 900mm/s, motor capacity 200W, screw path 5/10/20mm. Mount components to these load-rated bearings and track rollers to add linear motion along T-slotted rails. Application temperature -30°C to +120°C. All slides are based on a. , Ltd. Choose from our selection of sleeve bearing carriages, including over 600 products in a wide range of styles and sizes. 2. Sets include an upper and lower track for hanging lightweight cabinet doors that slide past each other. With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. Side-Mount Ball Bearing Carriages and Guide Rails . ANWOK 2Pcs Linear Guide Rail HGR20-800mm with 4Pcs HGH20CA Square Type Carriage Bearing Block Linear Rail Set Slide Guide Rod Overall Length 31. Ball Bearing Carriages and Guide Rails for Curves. With multiple adjust options (Auto, Non, and Manual) as well as corrosion-resistant aluminum, this friction guide can handle any. These ball carriages mount on 500 series guide rails. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than other carriages and rails. Mount to vertical surfaces for applications where tight tolerances aren't required. Made of stainless steel, all of these carriages and guide rails are corrosion resistant. Hilitand LML12B Linear Rail Mini Bearing Steel Guide Rail Slide Rail Width 12mm + Slide Block Variety Length (150mm) 3. IKO 25mm x 480mm Linear Roller Way Rail Guide. Carriages can be adjusted for a snug or loose fit on the rail (also known as preload). Blocks are pre-loaded ; There are two rubber stoppers on each side of the linear rail, it can prevent the carriage block from falling out ; Suggested to use M3 T nut and screws if you fix it to 20 series EU. The amounts specified in Table 4. T-Slotted Framing Slides, Tracks, and Rollers. Single-Wheel Vertical Band Saw Blade Guides. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Guide Rail. You'll often see these carriages and guide rails used to build assembly stations and other repetitive processes. There are many different series of rails and carriages, but the two most popular ones by far are the MGN and HG series. and operating temperatures ranging from -10 °C to +100 °C. IVTAAN Compact linear guide rails provide precise linear motion and fast travel with roller bearing carriage. High-Cycle Ball Bearing Carriages and Guide Rails. 7 kN. All-steel construction and tightly spaced wheels with double ball bearings gives these rails the strength needed to handle heavy loads. Straight rails have close tolerances that support high loads and provide precise ball movement. Good for hydraulic systems, machine tools, and other high-torque applications, these shafts have teeth that transmit high rotational loads. Guide Rail. Sleeve Bearing Carriages and Guide Rails. linear guide with ball bearing KUVS1 series. Load: 792,800 N. Roller Bearing Carriages and Guide Rails. BROWSE CATALOG Thomson linear guide rails and carriages are designed to precise linear motion for various applications, such as machine tools, semiconductors and medical equipment. All; Auction; Buy It Now; Best Match. Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. 550 products. They consist of a y axis support for x-axis girders. SEB miniature guide rails pair with SEB type ball bearing carriages to create a lightweight, compact guide system with a low profile that fits in tight spaces for. Solution: ˜ • Ball Guide: Standard˜These 500 series profile rails guide single or multiple ball carriage systems. The sleeve bearings allow them to outperform ball bearings in wet, dirty, and high-vibration. Semi-automatic Grinding Device. These 500 series profile rails guide single or multiple ball carriage systems. Sleeve Bearing Carriages and Guide Rails Extend the horizontal reach of your Universal Robots’ arm to operate your robot at multiple positions along an assembly line, or transport workpieces from a conveyor to your CNC. Their V-shaped rails allow them to operate well in dirty environments because the debris won’t get trapped on the rail. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Positioning Slides Ball Bearing Carriages and Guide Rails for Curves For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high- speed, high-load applications. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Buy online with next day delivery. Buy online with next day delivery. 81") Block: MGN12H ball bearing carriage. SEB miniature guide rails pair with SEB type ball bearing carriages to create a lightweight, compact guide system with a low profile that fits in tight spaces for. Linear Bearing Slide Rails are support mechanisms that are used to carry heavy loads and ensure straight and level linear motion. Carriage. Linear guide rollers are based on the design of radial ball bearings. Ball Bearing Carriages and Guide Rails. This reduces the noise, heat, friction, and dust they produce, so carriages can travel back and forth along the rail many times. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than other carriages and rails. Partial-Extension Lock-Open Drawer Slides. Mount in any orientation without affecting load capacity. 25 mm 20 mm 35 mm. With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. In stock and ready to ship. Choose from our selection of rail bearings, including ball bearing carriages and guide rails, track roller carriages and. The model was verified by comparing the simulated displacements of a. As with other bearing designs, linear bearings can be sealed off using metal or rubber. 329 products. Roller bearing carriages handle heavier loads than ball bearing and track roller carriages. Sleeve bearings allow them to outperform ball bearings in wet, dirty, and high-vibration environments. They can be modified with accessories in the field without removing the carriage. Linear Bearings. The fixed bearing rail is the main absorber of radial and axial forces. Choose from our selection of precision slides, including ball bearing carriages and guide rails, positioning slides, and more. Choose from our selection of linear slides, including ball bearing carriages and guide rails, telescoping slides, and more. Clean Room Ball Bearing Carriages and Guide Rails. This grease fills in those imperfections so carriages roll smoothly. With a plastic cage that surrounds the ball bearings to prevent them from colliding, these extra-wide carriages run quietly for many cycles without needing maintenance. JTW Graphite Lubricating Bronze Washer a huge range of Graphite Filled Bushes. Low-Profile Sleeve Bearing Carriages and Guide Rails. Track Rollers and Guide Rails Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Typical uses include automation systems, robotics, medical equipment, and transport-type machinery. Roller guide rails. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than other carriages and rails. Clean Room Ball Bearing Carriages and Guide Rails. With an internal reservoir that continuously supplies grease, these carriages and guide rails are good for use in hard-to-reach places. End seals keep lubricant in and dirt out. It's so anoying that some linear carriages may be move as smooth as expected. Contact us for pricelist. Carriage Width. If this value is exceeded, a roll moment will be introduced into the carriages, which can result in shortened bearing life. Side-Mount Ball Bearing Carriages and Guide Rails. Splined Rotary Shafts. They also keep parts and machinery moving and aligned. Application:When it comes to 710 mm Linear Guide Rails, you can count on Grainger. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than other carriages and rails. Available lengths. Side-Mount Ball Bearing Carriages and Guide Rails. Track Roller Carriages and Guide Rails Ball Bearing Carriages and Guide Rails for Curves For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high- speed, high-load applications. They're good for use in areas where multiple carriages or rails won't fit. Hardened bearing steel rails are mated with high strength aluminum extrusion to give these guides excellent stiffness, straightness, and load capacity. These low-profile carriages have a plastic cage surrounding the ball bearings to keep them from colliding with each other. They're good for use in areas where multiple carriages or rails won't fit. 9 products. 25mm linear guide rail HGR25 with linear guide blocks HGH25CA, These products are known for their high performance, long service life, perfect finishing and user-friendly installation. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. High-Cycle Ball Bearing Carriages and Guide Rails A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. JFB Graphite Lubricant Bronze Bushing is a Oilless self-lubricating beaings. 99 Used. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. This guide rail is an ideal solution for cost-sensitive applications and is designed as a drop-in replacement with. Rail width: 80 µm - 162,000 µm. In. These are the basics which are adjusted and tweaked to fulfill a wide array of manufacturing and industry needs. All carriages and rolling elements are through hardened and all rails are case hardened (except size 15 rail which is through hardened). They can be modified with accessories in the field without removing the carriage. Miniature linear guide rail and carriage assemblies consist of low-profile guide rails matched with compatible single or dual carriages. bearing guide and rail. A mismatch in size between the carriage and the rail. Rail lengths are from 200 mm to 4000 mm. Figure 3: Profile rail bearing linear guide Profile rail bearing systems Profile or square rail systems offer higher accuracy, higher rigidity, higher load-life capacity, and are also very compact. Ball Linear Guides. They're good for use in areas where multiple carriages or rails won't fit. Sleeve Bearing Carriages and Guide Rails Ball Bearing Carriages and Guide Rails for Curves For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high- speed, high-load applications. Buy online with next day delivery. Hardened bearing steel rails are mated with high strength aluminum extrusion to give these guides excellent stiffness, straightness, and load capacity. Shop Linear Guide Assembly - Miniature, Short Carriage from MISUMI. Small enough to fit in a camera zoom lens and other precision motion applications, these carriages and guide rails have a black chrome-plated finish that diffuses light to prevent reflecting light from causing equipment to malfunction. Mount in any orientation without affecting load capacity. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. 35 inch. $89. Linear Actuator Sliding Table Linear Guide Sliding Table Linear Stage Actuator Cross Slide Table Linear Slide Guide Rails Ball Screw Guide Sliding Table W/Handwheel, Stroke 200/900mm (200mm) $100. Material: Steel. MISUMI USA has all of your Standard Linear Guides needs covered, with over 3. But this cost effectiveness doesn’t mean it won’t have a long life. 42 New. Their key advantage is derived from ball conforming grooves on both inner and outer races that increases load capacity relative to standard round. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Ball-bearing carriages and rail systems create less friction and resist misalignments. Shop Ball Bearing Carriages at Reid Supply 70+ years of expertise. Choose from our selection of bearing guides, including ball bearing carriages and guide rails, mounted linear bearings, and more. They can be modified with accessories in the field without removing the carriage. When it comes to 5 Linear Guide Rails, you can count on Grainger. $45. Carriages have ball or roller assemblies and pair with compatible profile. four-row recirculating ball bearing 45 mm. Ball Bearing. Slide drawers, panels, and doors with these tracks and rollers. Straight rails have close tolerances that support high loads and provide precise ball movement. Straight rails have close tolerances that support high loads and provide precise ball movement. Industrial linear guides and slide rails are available in a wide range of sizes and offer a variety of rail and rail solutions that provide smooth and quiet motion in linear bearings,. These guides have a carriage that rides on a pair of parallel round rails, producing controlled motion from one simple unit. Free shipping. Gantry rails can be either manual or automated. Rail width: 12 mm - 60 mm. These are the basics which are adjusted and tweaked to fulfill a wide array of. 7kN. The 500 Series Ball rail is subjected to multiple straightening processes during and after grinding of the roller paths. Rail profiles and roller cassettes made of anodized aluminum Precision polished and calibrated. 6 mm Long, Static Load Capacity: 15. They can be modified with accessories in the field without removing the carriage. With a larger contact area than ball bearing carriages, roller bearing carriages provide better positioning accuracy and support heavier loads.