Roller Bearing Carriages and Guide Rails. Ball-bearing carriages and rail systems create less friction and resist misalignments. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. 38. 9 products. Low cost linear slide guide rail for sale, driven by Ф16mm ball screw. Guide: This is the mounting system for the linear bearing, also. Assembled rail and carriages are dimensionally interchangeable with recirculating ball bearing guides. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. 00 to $258. CSN. Compatible with THK guide rails, mount these wipers to carriages to sweep chips and other contaminants out of the way as the carriage moves across the rail. If this value is exceeded, a roll moment will be introduced into the carriages, which can result in shortened bearing life. Clean Room Ball Bearing Carriages and Guide Rails. High-Cycle Extra-Wide BallBearing Carriages and 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. Roller Bearing Carriages and Guide Rails Because of these different motions, these ball screw/splines and bearings create efficient, fluid movements in complex automated applications, such as pick-and-place robots. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. They're good for use in areas where multiple carriages or rails won't fit. Maintenance-Free. Ball Bearing Carriages and Guide Rails for Curves. Side-Mount Ball Bearing Carriages and Guide Rails. This grease fills in those imperfections so carriages roll smoothly. Mount to vertical surfaces for applications where tight tolerances aren't required. Simple Slide Positioning Unit. 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. Carriage Width. High-Cycle Extra-Wide BallBearing 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. Also known as linear way covers, these bellows install on guide rails to protect the rails as carriages move across them. Aluminum Bolt-Together Framing and Fittings. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. With a larger contact area than ball bearing carriages, roller bearing carriages provide better positioning accuracy and support heavier loads. All-steel construction and tightly spaced wheels with double ball bearings gives these rails the strength needed to handle heavy loads. Description Material: Ball bearing steel Version: Electro zinc-plated. 00 to $258. The floating bearing rail serves to absorb the load of radial forces and, in combination with the fixed bearing rail, as a support bearing for absorbing torques that occur. drylin® Q flange bearing, square flange, twin. 002. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. A mismatch in size between the carriage and the rail. Assembled rail and carriages are dimensionally interchangeable with recirculating ball bearing guides. While pushing the slider, hold the tail of the slider with your hands behind your back. Their gothic arch profile provides more roller-to-rail contact. Straight rails have close tolerances that support high loads and provide precise ball movement. Suggestions are given for further considerations, including fixing the axial position of the twin leadscrew, accurately. They can be modified with accessories in the field without removing the carriage. 00. Bearing carriage (block): The housing for the bearing balls or rollers which is mounted onto the linear guides (rails). Open Linear Ball Bearing Slide Block Carriage Slider for Rail Guide CNC, HGH20CA, 20mm. Choose from our selection of linear motion rails, including ball bearing carriages and guide rails, support-rail shafts, and more. Anti-Reflective Miniature Ball Bearing Carriages and Guide Rails. Use them in areas where multiple carriages or rails won't fit. The mounting holes will be centered along the rail. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Image credit: THK Co. The rolling element of the bearing, whether it be ball or roller slides, helps move a load with ease. . 329 products. Mount in any orientation without affecting load capacity. If the bearing is broken, as long as the guide rail is not damaged, as long as a new sliding parts can be replaced. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. C-shaped guide rails grip the carriage around the outside to support linear motion along walls and other vertical surfaces. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. When it comes to 700 mm Linear Guide Rails, you can count on Grainger. 7 kN. The carriage is slightly too big for the rail, or vice versa. Low-Profile Sleeve Bearing Carriages and Guide Rails. Hilitand LML12B Linear Rail Mini Bearing Steel Guide Rail Slide Rail Width 12mm + Slide Block Variety Length (150mm) 3. 35 inch. When it comes to 5 Linear Guide Rails, you can count on Grainger. Note: Ball bearings do not have a cage, so they’ll fall out if the carriage is removed from the guide rail. We warmly welcome you to wholesale discount ball bearing carriages and guide rails from our factory. Mount in any orientation without affecting load capacity. . This flange guides the bearings along the rail while limiting contact points. Get linear guide carriages and slides from us. drylin® T guide carriages are also made using igus. Forcing a carriage onto a rail can knock out rolling elements and/or damage the carriage and rail . Extra-Wide Ball Bearing Carriages and 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. 81") Block: MGN12H ball bearing carriage. Run many cycles in tight spaces before replacing or re-greasing carriages. Mount to vertical surfaces for applications where tight tolerances aren't required. The lubrication interval should not be longer than two years or 500 km travel distance, even under optimal environmental conditions, without contamination and low load. 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. 334 products. Ball-bearing carriages and rail systems create less friction and resist misalignments. Roller bearing carriages handle heavier loads than ball bearing and track roller carriages. Rollers are permanently lubricated to save maintenance time and effort. With multiple adjust options (Auto, Non, and Manual) as well as corrosion-resistant aluminum, this friction guide can handle any task and endure the harshest environments. Extra-Wide Ball Bearing Carriages and Guide Rails. Also known as profile rails, they keep. They're good for use in areas where multiple carriages or rails won't fit. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Lubricate bearings . 3,794 products. 001 to . If 40. Version: Electro zinc-plated. 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 track roller carriages and guide rails are stainless steel for use in wet, corrosive environments. They can be modified with accessories in the field without removing the carriage. NLGI viscosity grade is a rating of a grease's consistency. For made-to-order guide rails, please specify the length of the rail (in 1 mm increments). Extra-Wide Ball Bearing Carriages and Guide Rails. 002” per 12" inches. 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. Rail width: 170 mm. Know your precision, repeatability, loading, and environmental requirements before. Buy online with next day delivery. 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. Semi-automatic Grinding Device. block body in standard version Overall length of the runner block = 73. 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. 6693 inch. They're good for use in areas where multiple carriages or rails won't fit. 002. MISUMI USA has all of your Standard Linear Guides needs covered, with over 3. Side-Mount Ball Bearing Carriages and Guide Rails. Ball bearings provide. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. 00. Rail Length: 300mm (11. 66 mm. Choose from our selection of aluminum extrusion carriages, including over 750 products in a wide range of styles and sizes. Extra-Wide Ball Bearing Carriages and Guide Rails. Sets include an upper and lower track for hanging lightweight cabinet doors that slide past each other. Ball Bearing Carriages and Guide Rails for Curves. With support rail With slots Half guideway Curved guideway element Accessories Addressesdrylin® Q flange bearing, square flange, twin. 5 inch(800mm) for DIY CNC Routers. 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. Profile-rail bearings tend to be more compact than round ball-bushing bearings of the same load rating. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. One type of linear ball bushing guide is not necessarily easier to use than another, the choice depends entirely on the specifi c application. High-Cycle Ball Bearing Carriages and Guide Rails. Linear guide rollers are based on the design of radial ball bearings. With no rolling elements, Mini-Rail will not catastrophically fail. Automation. This linear guide is cost efficient due to the use of bended steel. Add guide rail bellows to protect rails from contaminants as. Free shipping. Steel ball bearings are quite common, but plastic linear bearings and guides are increasingly tough so their use is on the rise. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Learn about the different types of guide rails, their. VEVOR supplies heavy-duty linear bearing rail guides with lengths up to 4000mm (longer lengths available w butt joints. Positioning Slides for Stepper Motors. MGN linear rails are best suited for low load applications, such as 3D printers, pick and place. These 500 series profile rails guide single or multiple ball carriage systems. Choose from our selection of linear motion ball slides, including carriages and guide rails, telescoping slides, and more. Material sliding element: iglide® J. The fixed bearing rail is the main absorber of radial and axial forces. Slide drawers, panels, and doors with these tracks and rollers. Mount to vertical surfaces for applications where tight tolerances aren't required. $24. Ball Bearing Carriages and Guide Rails for Curves. For drylin® Miniature guide rails sizes 12mm and 15mm (mounting-base width) Black zinc carriage with iglide® J liner material. The race- ways of the profile rail and of the carriage are arranged at an angle of 45°. Slides, Track, and Rollers. Load Fastening from Top. Air Slides. Rails come in lengths of up to 1000mm for the H series guides; mini rails up to 695mm for the M series guides; and wide mini. 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. 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 Bearing Carriages and Guide Rails for Curves. About This Series. Shop Ball Bearing Carriages at Reid Supply 70+ years of expertise. Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. End Seal Material. 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. A preloaded bearing loaded beyond the preload value has the same characteristics as a clearance bearing. Choose from our selection of linear motion slide blocks, including ball bearing carriages and guide rails, telescoping slides, and more. quality bearing steel. Made with needle-roller bearings, these track roller carriages have higher load capacities than other track roller carriages. Maximum moments up to 3 Nm (size 10) and up to 10 Nm (7. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. Use them for low speed applications. Note: Ball bearings do not have a cage, so they’ll fall out if the carriage is removed from the guide rail. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. They can be modified with accessories in the field without removing the carriage. Almost all carriages, rails and rolling elements are through hardened. They can be modified with accessories in the field without removing the carriage. This is often specified as S1, and is a function of the distance between the rails and the preload of the carriages—the higher the preload level of the carriages, the smaller the permissible vertical offset. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. A linear bearing includes a carriage and rolling element. 842 products Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. Choose from our selection of ball bearing carriages and guide rails, linear motion shafts, and more. CNC Linear Guide Rail Slide Stage Actuator Ball Screw Motion Table Nema 23 Motor. 99. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. They can be modified with accessories in the field without removing the carriage. Precision linear shafts guide bearings and slides in single-axis motion and positioning. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. 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. I decided to take it apart to service it and repack/repl. Lubrication-free one-to-one alternative to recirculating ball bearing guides – identical connector and hole dimensions. Positioning Slides for Universal Robots. High-temperature PTFE-thickened grease enables these carriages to operate in temperatures up to 500° F, higher than any other carriage that we offer. Side-Mount 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. End seals keep lubricant in and dirt out. Choose from our selection of linear motion carriages, including ball bearing carriages and guide rails, mounted linear ball bearings, and more. While pushing the slider, hold the tail of the slider with your hands behind your back. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. In stock and ready to ship. In stock and ready to ship. Align the guide rail bearing interface and push it gently to the place indicated by the arrow in the figure below. 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. Almost all carriages, rails and rolling elements are through hardened. 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. 8 of the Linear Guide Catalog should be used for relubrication. These 500 series profile rails guide single or multiple ball carriage systems. Compact linear motion system can match with servo. VEVOR Linear Rail 2X 20-1500mm Linear Slide Rail + 4X Pillow Block Carriage Bearing Block Linear Guideway Rail for Automated Machines and Equipments (20) 124. 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. Precision. Supplier: Stock Drive Products & Sterling Instrument - SDP/SI. 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. They are commonly used in industrial, commercial, and residential applications. In stock and ready to ship. Guide-Rail Way Wipers. Their key advantage is derived from ball conforming grooves on both inner and outer races that increases load capacity relative to standard round. 99 New. The guide rail bearing installation steps are as follows: 1. Straight rails have close tolerances that support high loads and provide precise ball movement. 0 mm Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy. Roller bearing carriages handle heavier loads than ball bearing and track roller carriages. Align the guide rail bearing interface and push it gently to the place indicated by the arrow in the figure below. The LM Guide (Linear Motion Guide) is our main product, incorporating a part with a linear rolling motion into practical usage for the first time in the world. Clean Room Ball Bearing Carriages and Guide Rails. They're good for use in areas where multiple carriages or rails won't fit. About This Series. It is the part that supports the tool. These guides have a carriage that rides on a pair of parallel round rails, producing controlled motion from one simple unit. Extra-Wide Ball Bearing Carriages and Guide Rails. Profile rail is the newer of the two technologies and has been around for about 40 years. And while standard acceleration limits are 50 m/s 2 (1,968. Both are dimensionally identical, allowing for easy one-to-one replacement. Aluminum Bolt-Together Framing and Fittings. Choose from our selection of linear guide bearings, including over 550 products in a wide range of. Standard Carriages and Guide Rails . block body in standard version Overall length of the runner block = 345. For drylin® Standard guide rails 15/20/25/30mm (guide widths) Adjustable bearing clearance. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Extra-Wide Ball Bearing Carriages and Guide Rails. Free shipping. 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. Most of the IKO's linear motion carriages and guide rails can be used as separate, interchangeable components. Roller guide rails. Choose from our selection of linear motion guides, including ball bearing carriages and guide rails, track roller carriages and guide rails, and more. Rail length: 72 mm - 4,000 mm. X-Axis & Y-Axis Rack & Pinion, Made In USA. Gantry Rails. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. These 500 series profile rails guide single or multiple ball carriage systems. 1 mm/1000 mm. They also keep parts and machinery moving and aligned. An inconsistent diameter of a few balls in the carriage. Straight rails have close tolerances that support high loads and provide precise ball movement. Examples of the former include roller and XY tables as well as machine and dovetail slides. Ball-bearing carriages and rail systems create less friction and resist misalignments. linear guide with ball bearing KUVS1 series. 2. Note: Each carriage can only be used with its corresponding guide rail. No cutting charge for standard lengths and tolerances. 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. Straight rails have close tolerances that support high loads and provide precise ball movement. In stock and ready to ship. In stock and ready to ship. In stock and ready to ship. These 500 series profile rails guide single or multiple ball carriage systems. Maximum moments up to 3 Nm (size 10) and up to 10 Nm (7. In light load applications seal drag, lubrication viscosity, preload, and other factors affect the total actuation force. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. 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”. High-Cycle Ball Bearing Carriages and Guide Rails. Clean Room Ball Bearing Carriages and Guide Rails. Sadly, this is not the case with profiled rails that require accurate mounting and alignment to ensure even load distribution among the recirculating balls. Purchase THK products ONLINE, Linear Motion Guides, Actuators, Ball Screws, Cross Roller Rings, Linear Bushings, and even Custom Parts. PSF - Size of the guide rail (L= 4000 mm) Linear guide rails LFS L= 298 to 2998 mm (in 100 mm steps)Complete Linear Rail Kits: This linear guide rail set includes 2 pieces of 66. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Linear motion guide bearings can provide great accuracies, stiffness and load carrying capacity. Tracks inductively hardened and ground. One type of linear ball bushing guide is not necessarily easier to use than another, the choice depends entirely on the specifi c application. Choose from our selection of linear rail bearings, including ball bearing carriages and guide rails, mounted linear bearings, and more. Each carriage has end seals to keep lubricant in and dirt out. New NSK LAH15EM Linear LM Guide Rail Bearing Block LAH15 x1ea. Standard carriages are narrower than flanged. drylin® T Standard Guide Rail. In stock and ready to ship. The tolerances are in the range of 0. I accidentally dropped the Hiwin linear guide carriage and some of the ball bearings just flew away. In stock and ready to ship. Standard Carriages and Guide Rails . They're good for use in areas where multiple carriages or rails won't fit. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. Straight rails have close tolerances that support high loads and provide precise ball movement. 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. JTW Graphite Lubricating Bronze Washer a huge range of Graphite Filled Bushes. Add your own stepper motor and controller to precisely move the ball screw and carriage smoothly at high speeds, like a head on an inkjet printer. When it comes to 35 Linear Guide Rails, you can count on Grainger. At a minimum, these items include the expensesdirectly mounted onto the carriages. Global Standard Interchageable Linear Guide Ball Carriage for Profile Rail - Series: HSR-C, Flanged Block Mounted from Top or Bottom, 15 mm Rail, 47 mm Wide x 56. ball bearing carriages and guide rails. In stock and ready to ship. Choose from our selection of linear motion guides, including ball bearing carriages and guide rails, track roller carriages and. Rail length: 335 mm. Designed to lubricate linear motion components, such as slide bearings, guides, and ball screws, these guns work exclusively with THK grease cartridges and fittings. 2. Extra-Wide Ball Bearing Carriages and Guide Rails. For. Extra-Wide Ball Bearing Carriages and Guide Rails. Ball Linear Guides. Linear motion bearings are bearings that are made to move in a particular direction, and they come in a wide array of different designs. 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. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. $8. Mount in any orientation without affecting load capacity. Their V-shaped rails allow them to operate well in dirty environments because the debris won’t get trapped on the rail. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads better than other carriages. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. Carriage: The carriage is the moving part guided by the bearings. MGN carriages feature two bearing raceways, while the HG series goes up to four which provides lower friction. In stock and ready to ship. Note: Stamped and rolled guide rails. In stock and ready to ship. They're good for use in areas where multiple carriages or rails won't fit. The 500 Series Ball Linear Guide rail utilizes a special trapezoidal profile that maximizes the carriage cross section, resulting in the highest possible rigidity. Assembled. Available lengths. Mount components to these load-rated bearings and track rollers to add linear motion along T-slotted rails. End seals keep dust from entering, and the cage traps lubricant around the bearings, reducing friction and heat buildup. Length. Choose from our selection of ball bearing carriages and guide rails, mounted linear bearings, drawer slides, and more. 7kN. Load: 792,800 N. Add guide rail bellows to protect rails from. 100~1050mm Ball Screw Driven Linear Slide, Ф16mm. 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. INA Linear Bearings or Carriages RWU series are preloaded and especially suitable for use. Guide Rail Carriages. SKF. Mount components to these load-rated bearings and track rollers to add linear motion along T-slotted rails. Sadly, this is not the case with profiled rails that require accurate mounting and alignment to ensure even load distribution among the recirculating balls. Shop Linear Guide Assembly - Miniature, Short Carriage from MISUMI. They can be modified with accessories in the field without removing the carriage. )When it comes to 315 mm Linear Guide Rails, you can count on Grainger. Half the weight of steel, this aluminum framing resists corrosion in wet environments. These double row angular contact ball bearings have an outer ring with a gothic arch profile raceway,. They offer flexibility to fit specific envelopes by allowing customized separations between shafts and/or bearings on shafts to produce higher. Choose from our selection of sleeve bearing carriages, including over 600 products in a wide range of styles and sizes. Note for ordering: Fastening screws are supplied. NLGI 2 is about the. Thick grease that prevents the balls from rolling freely. Extra-Wide Ball Bearing Carriages and Guide Rails. Carry loads along guide rails on accurate and repeatable paths in automated systems. The linear guide rail runs along a girder attached to the top of the x-y supports. Extra-Wide Ball 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. Linear Motion Slides. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. When it comes to 12 Linear Guide Rails, you can count on Grainger. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Positioning Slides for Stepper Motors. This reduces the noise, heat, friction, and dust they produce, so carriages can travel back and forth along the rail many times. Rail width: 12 mm - 60 mm.