66 mm. If 40. Choose from our selection of linear slides, including ball bearing carriages and guide rails, telescoping slides, and more. Their V-shaped rails allow them to operate well in dirty environments because the debris won’t get trapped on the rail. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Note: Compact C-profile guide rails with internal hardened tracks. 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. Strut Channel. 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. 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. Size the linear-guide system. THK America Official Online Store264 products. 4lbf*ft) (size 20) Torque-resistant sliding elements made from iglide® J. Mount in any orientation without affecting load capacity. Our guides are made of extruded aluminum profiles, which are aligned using leveling plates or clamped onto a correspondingly precisely machined support plate. Positioning Slides for Stepper Motors. Clean Room Ball Bearing Carriages and Guide Rails. Rexroth Ball Rail Systems add more value to manufacturing processes. Typically the more expensive of the two options, profiled rail has a higher load capacity and much tighter accuracy. Choose from our selection of track roller carriages and guide rails, track rollers and guide rails, ball bearing carriages and guide rails, and more. 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. 99 to $160. 329 products. 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. Choose from our selection of linear motion rails, including ball bearing carriages and guide rails, support-rail shafts, and more. drylin® T guide carriages offer a low cost, maintenance-free alternative to recirculating ball bearings. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads better than standard carriages and rails. block body in standard version Overall length of the runner block = 73. bearing guide and rail. Learn about the different types of guide rails, their features, advantages and how to choose between square and round guide rails. The linear guide rail runs along a girder attached to the top of the x-y supports. Rigidity The 500 Series Ball Linear Guide rail utilizes a. These guides fit most band saws. Mount in any orientation without affecting load capacity. Extra-Wide Ball Bearing Carriages and Guide Rails. Rail profiles and roller cassettes made of anodized aluminum Precision polished and calibrated. Two types of linear guides are used in the industrial sector today: the runner with ball. In stock and ready to ship. Mount to vertical surfaces for applications where tight tolerances aren't required. Guide loads along angle rail tracks in food and pharmaceutical plants or other sanitary environments. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Add guide rail bellows to protect rails from contaminants as. 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. Choose from our selection of roller bearing slides, including ball bearing carriages and guide rails, telescoping slides, and more. Side-Mount Ball Bearing Carriages and Guide Rails. Also known as profile rails, they keep carriages aligned and guide them short and long distances with minimal friction. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. CSN. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. The place pointed by the arrow in the. Side-Mount Ball Bearing Carriages and Guide Rails. 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. They also keep parts and machinery moving and aligned. Fundamentally, profile rail guides constitute a coupled angular ball bearing in back-to- back arrangement and, depending on the application, are available in different preload classes. THK. Choose from our selection of track rollers and guide rails, track roller carriages and guide rails, ball bearing carriages and guide rails, and more. With an internal reservoir that continuously supplies grease, these carriages and guide rails are good for use in hard-to-reach places. Z-Axis – Full CNC’d Billet Precision Ball Lead-Screw. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. 0 mm Interchangeability: The runner block and the guide rails can be combined with each other with every accuracy. T-Slotted Framing Slides, Tracks, and Rollers. Partial-Extension Lock-Open Drawer Slides. Half the weight of steel, this aluminum framing resists corrosion in wet environments. 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. Choose from our selection of linear motion ball slides, including carriages and guide rails, telescoping slides, and more. 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. When it comes to 12 Linear Guide Rails, you can count on Grainger. And while standard acceleration limits are 50 m/s 2 (1,968. Straight rails have close tolerances that support high loads and provide precise ball movement. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Profiled track rollers Profiled track rollers without filling slots are used to guide the carriages and support the forces. I decided to take it apart to service it and repack/repl. It realizes the development of high-precision, high-rigidity, energy-saving, high-speed machines with long service lives. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Rail length: 19 mm - 42 mm. 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. With multiple adjust options (Auto, Non, and Manual) as well as corrosion-resistant aluminum, this friction guide can handle any. Ball-bearing carriages and rail systems create less friction and resist misalignments. Guide Rail Carriages. High-Cycle Extra-Wide BallBearing 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. Linear Motion. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Ball-bearing carriages and rail systems create less friction and resist misalignments. In stock and ready to ship. 6693 inch. Buy online with next day delivery. Because cam rollers are based on radial, rather than recirculating bearings, they can travel at higher speeds than traditional ball or roller rail guides. 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. 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. Ball Bearing Carriages and Guide Rails. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. Steel. 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. SKU: ATO-LS-105016. When it comes to 35 Linear Guide Rails, you can count on Grainger. Carriage. CNC Linear Guide Rail Slide Stage Actuator Ball Screw Motion Table Nema 23 Motor. Roller guide rails. T-Slotted Framing Slides, Tracks, and Rollers. 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. Assembled rail and carriages are dimensionally interchangeable with recirculating ball bearing guides. These track roller carriages and guide rails are stainless steel for use in wet, corrosive environments. Linear motion products are used in conveyors and assembly operations to provide movement in a straight line, including rolling elements in a raceway or guide rail. These 500 series profile rails guide single or multiple ball carriage systems. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Ready to Ship $8. HGH25CA Linear Guideway Block. Their key advantage is derived from ball conforming grooves on both inner and outer races that increases load capacity relative to standard round. They're good for use in areas where multiple carriages or rails won't fit. These 500 series profile rails guide single or multiple ball carriage systems. Hard anodized aluminum. Double-row and four-row miniature linear ball bearing and guideway assemblies are full-complement, preloaded linear locating bearings for unlimited stroke lengths. Good for hydraulic systems, machine tools, and other high-torque applications, these shafts have teeth that transmit high rotational loads. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. 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. Positioning Slides for Stepper Motors. 00 to $258. But when a compact package is the driving design factor, dual-shaft linear guides are a common choice. Slip-On Framing and Fittings. In light load applications seal drag, lubrication viscosity, preload, and other factors affect the total actuation force. For made-to-order guide rails, please specify the length of. 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. They're good for use in areas where multiple carriages or rails won't fit. The end cap is constructed of a high-strength, glass-filled nylon with nitrile rubber seal. Side-Mount Ball Bearing Carriages and Guide Rails . They're good for use in areas where multiple carriages or rails won't fit. • Straight rails through advanced grinding technologies • Simple installation and. 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. Available in 5 sizes from 7 mm. In stock and ready to ship. These 500 series profile rails guide single or multiple ball carriage systems. Z-Axis – Full CNC’d Billet Precision Ball Lead-Screw. When it comes to 80 mm Linear Guide Rails, you can count on Grainger. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. Mount in any orientation without affecting load capacity. Our high performance, Ball Rail linear guides protect. 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. 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. and operating temperatures ranging from -10 °C to +100 °C. All slides are based on a. 1 mm/1000 mm. It is a complete offering of rails and carriages in a broad range of styles, sizes and unique features produced to. Version: Electro zinc-plated. Extra-Wide Ball Bearing 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. 871 products. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. And since they are available in a variety of sizes and capacity levels, they are used in many different applications. In stock and ready to ship. 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. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. These are the basics which are adjusted and tweaked to fulfill a wide array of manufacturing and industry needs. Guide-Rail Way Wipers. Rail Guide Material: bearing steel. 6 mm Long, Static Load Capacity: 15. Description: Compensated Precision Metric Mini-Rail® Linear Guides, 85 mm Long Rail, 8 mm Assembly Height. Special Offer: Clearance. End Seal Material. Clean Room Ball Bearing Carriages and Guide Rails. They're good for use in areas where multiple carriages or rails won't fit. 002” per 12" inches. What can you do to fix a stucked HG. They are commonly used in industrial, commercial, and residential applications. Mount to vertical surfaces for applications where tight tolerances aren't required. Insert rails into fittings and tighten screws to make guards, railings, and racks. Carriage. I accidentally dropped the Hiwin linear guide carriage and some of the ball bearings just flew away. No cutting charge for standard lengths and tolerances. drylin® T Miniature Guide Rail. Mount components to these load-rated bearings and track rollers to add linear motion along T-slotted rails. Extra-Wide Ball Bearing Carriages and Guide Rails. Ball Bearing Carriages and Guide Rails for Curves. $24. Speed. 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. End seals keep lubricant in and dirt out. Mechanical Drive System. They're good for use in areas where multiple carriages or rails won't fit. 11 strokes for selection, minimum 100mm, maximum 1050mm, maximum speed 900mm/s, motor capacity 200W, screw path 5/10/20mm. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. 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. 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. 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. X-Axis & Y-Axis Rack & Pinion, Made In USA. Mount to vertical surfaces for applications where tight tolerances aren't required. In stock and ready to ship. For drylin® Miniature guide rails sizes 12mm and 15mm (mounting-base width) Black zinc carriage with iglide® J liner material. 0 lb. Straight rails have close tolerances that support high loads and provide precise ball movement. Mini-Rail is a fully interchangeable and economical solution to industry standard linear guides. These tiny carriages and guide rails are sized for electronic and other precision applications. 15 shipping. Mount to vertical surfaces for applications where tight tolerances aren't required. Description Material: Steel. Ball-bearing carriages and rail systems create less friction and resist misalignments. Profile Rail Linear Guides. IKO LWL9B Linear Ball Bearing Carriage Slide on 79mm Guide Rail 9mm Wide (1) Total Ratings 1. Product Range: Power Transmission: Product Set: Linear Motion: Type: Ball Bearing Systems. Splined Rotary Shafts. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. Sizes 07/09/12/15mm (mounting-base width) Available up to 2000mm lengths. 25 mm 20 mm 35 mm. 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. Mount to vertical surfaces for applications where tight tolerances aren't required. All; Auction; Buy It Now; Best Match. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. These tiny carriages and guide rails are sized for electronic and other precision applications. Get linear guide carriages and slides from us. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. The HGR25 Linear Rail has great performance and capability of making very accurate and stable CNC Machines. Clean Room Ball Bearing Carriages and Guide Rails. Application. Linear guidance systems with linear recirculating ball bearing units comprise the linear ball bearings, carriages and guideways. They are equipped with 4 rows of ball-bearings at right angles. High-Quality Steel Material: The linear motion slide rails are made of high-quality 55C steel, and blocks are made of GCr15 ball bearing steel and PA66, an excellent non. In stock and ready to ship. These low-profile carriages have a plastic cage surrounding the ball bearings to keep them from colliding with each other. 51. 002. 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, linear actuators, profile rails, and cam rollers. 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. Choose from our selection of linear rail bearings, including ball bearing carriages and guide rails, mounted linear bearings, and more. There are many different series of rails and carriages, but the two most popular ones by far are the MGN and HG series. 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. One type of linear ball bushing guide is not necessarily easier to use than another, the choice depends entirely on the specifi c application. T-Slotted Framing LinearBearings and Track Rollers. Brand. A: drylin® rails and slides offer a significant amount of noise reduction compared to recirculation ball bearing systems. Mounting hole plugs protect mounting fasteners from corrosion. A simple adjustment of the middle roller makes the roller carriage play-free or sets the desired preload in the rail. Thanks to the X arrangement with rails and carriages (block), larger differences in height can also be made up. 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. You'll often see these carriages and guide rails used to build assembly stations and other repetitive processes. Linear Motion Guides. Semi-automatic Grinding Device. Material: Steel. Application:When it comes to 710 mm Linear Guide Rails, you can count on Grainger. MGN carriages feature two bearing raceways, while the HG series goes up to four which provides lower friction. drylin® Q flange bearing, square flange, twin. Block material: Stainless Steel. Step ResolutionSide-Mount Ball Bearing Carriages and Guide Rails. WON linear rails go together with the WON bearing guides as a matching set. A five degree-of-freedom model of a table supported by linear roller guides with guide rail errors was built to determine table-motion errors during its motion along erroneous rails. High-Cycle Ball Bearing Carriages and Guide Rails. drylin® T guide carriages are also made using igus. 005” per 12″ inchesThe rail is machined for precise mounting and alignment on all critical sides—ensuring dimensional and rail form accuracy. Choose from our selection of linear slides, including ball bearing carriages and guide rails, telescoping slides, and more. Choose from our selection of precision slides, including ball bearing carriages and guide rails, positioning slides, and more. Extra-Wide Ball Bearing Carriages and Guide Rails. 35 inch. Linear motion guide slides (square rail linear bearings) include a guide rail and carriage unit. End seals keep lubricant in and dirt out. Linear Motion Slides. Almost all carriages, rails and rolling elements are through hardened. Sets include an upper and lower track for hanging lightweight cabinet doors that slide past each other. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. The easy way out is to design a linear guide system based on ball bushings, which can tolerate imprecise mounting and other misalignments. End seals keep lubricant in and dirt out. Free shipping. They're good for use in areas where multiple carriages or rails won't fit. Choose from our selection of ball bearing carriages and guide rails, mounted linear bearings, drawer slides, and more. Instead of riding on. A linear bearing includes a carriage and rolling element. High-temperature PTFE-thickened grease enables these carriages to operate in temperatures up to 500° F, higher than any other carriage that we offer. Ball-bearing carriages and rail systems create less friction and resist misalignments. 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. 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. Sleeve Bearing Carriages and Guide Rails. 5 in/s 2 ), even higher accelerations can often be achieved by. Roller Bearing Carriages and Guide Rails. Eject the plastic block in the slider. Guide Rail. Guide Rail Mounts for T-Slotted Framing Adapt most 15 mm guide rails to fit on T-slotted assemblies. Size A1 B B1 D E F H H1 H2 L C0Y N C0Z N CAD. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. Aluminum Bolt-Together Framing and Fittings. Note: Stamped and rolled guide rails. Linear motion bearings are bearings that are made to move in a particular direction, and they come in a wide array of different designs. Good service and cheap products are available. MISUMI USA has all of your Standard Linear Guides needs covered, with over 3. For drylin® Standard guide rails 15/20/25/30mm (guide widths) Adjustable bearing clearance. Static load capacity up to 1350 lb. 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. drylin® T Standard Guide Rail. In stock and ready to ship. 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. Mount in any orientation without affecting load capacity. Straight rails have close tolerances that support high loads and provide precise ball movement. 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. $99. Choose from our selection of track rollers and guide rails, track roller carriages and guide rails, ball bearing carriages and guide rails, and more. Ball Bearing Carriages and Guide Rails for Curves. Choose from our selection of linear motion guides, including ball bearing carriages and guide rails, track roller carriages and guide rails, and more. $8. Soldering Fixture. Mechanical Drive System. Extra-Wide Ball Bearing Carriages and Guide Rails. These 500 series profile rails guide single or multiple ball carriage systems. Image credit: IKO. Profile rail is the newer of the two technologies and has been around for about 40 years. The sleeve bearings allow them to outperform ball bearings in wet, dirty, and high-vibration. 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. 003. This linear guide rail is produced from high-quality bearing steel. Mount in any orientation without affecting load capacity. linear guide with ball bearing KUEM series. Aluminum Bolt-Together Framing and Fittings. The ball guide or bearing rail, shaft, or aluminum surface will support the bearing and is typically available in standard steel, stainless steel, Armoloy plated, or chrome plated. Ball Bearing Carriages And Guide Rails (2291 products available) Chinese Brand 25mm HGH25CA Linear Ball Bearing Linear Carriage Block Linear Guide Rail. High-Cycle Low-Profile Ball These 500 series profile rails guide single or multiple ball carriage systems. In stock and ready to ship. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. Guide Rail Carriages. It's so anoying that some linear carriages may be move as smooth as expected. End seals keep dust from entering, and the cage traps lubricant around the bearings, reducing friction and heat buildup. 08 C or 0. High-Cycle Ball Bearing Carriages and Guide Rails. 100~1050mm Ball Screw Driven Linear Slide, Ф16mm. In stock and ready to ship. They can be modified with accessories in the field without removing the carriage. 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 linear bearing includes a carriage and rolling element. 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. Mount in. Made with needle-roller bearings, these track roller carriages have higher load capacities than other track roller carriages. Ball Bearing Carriages and Guide Rails for Curves. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Shop our wide selection of drylin® T linear guide rails & carriages, designed for easy assembly while maximizing the amount of utilizable installation space. 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. wide miniature corrosion-resistant. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. They're good for use in areas where multiple carriages or rails won't fit. Shop Linear Guide Rail - Profiled, Ball Guide Rail from Bosch Rexroth. Mount to vertical surfaces for applications where tight tolerances aren't required. IKO LWL9B Linear Ball Bearing Carriages on an 11" Long Rail - NNB. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. 7kN. They're good for use in areas where multiple carriages or rails won't fit. Key points: • Consider supports, guides, drives, and seals when designing a linear system. Straight rails have close tolerances that support high loads and provide precise ball movement. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. In this design, a small rib-like structure protrudes from the bearing, fitting in with a corresponding notch/indentation in the rail. 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. Material. rails with mounting brackets (sold separately; order one for each end of the guide rail). These carriages and guide rails are steel. Slides only extend 3/4 of the closed length to reduce the chance that a heavy load will tip your cabinet. Preload = 1.