MI ITEM 11106538. Shop our wide selection of drylin® T linear guide rails & carriages, designed for easy assembly while maximizing the amount of utilizable installation space. 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. 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. In stock and ready to ship. Profiled track rollers Profiled track rollers without filling slots are used to guide the carriages and support the forces. They can be modified with accessories in the field without removing the carriage. $77. drylin® Q flange bearing, square flange, twin. 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. 00 to $258. For technical drawings and 3-D models, click on a. 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. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Miniature profiled rails have a rail width of 15 mm or smaller and two rows of recirculating balls. 42 New. Clean Room Ball Bearing Carriages and Guide Rails. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Typical uses include automation systems, robotics, medical equipment, and transport-type machinery. While pushing the slider, hold the tail of the slider with your hands behind your back. Buy online with next day delivery. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. High-Cycle Ball Bearing Carriages and Guide Rails. Roller Bearing Carriages and Guide Rails. Guide-Rail Way Wipers. Rail width: 15 mm - 45 mm. 29 USD/Pc. Hardened bearing steel rails are mated with high strength aluminum extrusion to give these guides excellent stiffness, straightness, and load capacity. Mount in any orientation without affecting load capacity. 00 to $258. Image credit: THK Co. Positioning Slides for Universal Robots. Made of stainless steel, these carriages and guide rails are more corrosion resistant than steel carriages and guide rails. The end cap is constructed of a high-strength, glass-filled nylon with nitrile rubber seal. 440 Stainless Steel. 002. 38mm) bearing balls. Mount 1 mm wd. When it comes to 35 Linear Guide Rails, you can count on Grainger. T-Slotted Framing LinearBearings and Track Rollers. Track Sets for Bypassing Cabinet Doors. They are used in applications where precise movement of small loads is critical, such as medical diagnostics, test and measurement equipment, rapid prototyping machines, and micro manufacturing machines. High-Cycle Ball Bearing Carriages and Guide Rails. These track roller carriages and guide rails are stainless steel for use in wet, corrosive environments. Assembled rail and carriages are dimensionally interchangeable with recirculating ball bearing guides. Ball-bearing carriages and rail systems create less friction and resist misalignments. 99 Deal after registering Member discounted price. 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. The sleeve bearings allow them to outperform ball bearings in wet, dirty, and high-vibration. Material sliding element: iglide® J. Mechanical Drive System. Roller guide rails. A preloaded bearing loaded beyond the preload value has the same characteristics as a clearance bearing. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. The Thomson Profile Rail assortment consists of the next generation Profile Rail 500 Series ball and roller linear guides, 400 Series, AccuMini, compact miniature MicroGuide ®, and lightweight T-Series. Linear Bearing Slide Rails are support mechanisms that are used to carry heavy loads and ensure straight and level linear motion. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Side-Mount Ball Bearing Carriages and Guide Rails. Eject the plastic block in the slider. Solution: ˜ • Ball Guide: Standard˜These 500 series profile rails guide single or multiple ball carriage systems. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Choose from our selection of roller bearing slides, including ball bearing carriages and guide rails, telescoping slides, and more. Description: Compensated Precision Metric Mini-Rail® Linear Guides, 85 mm Long Rail, 8 mm Assembly Height. Choose from our selection of linear motion slide blocks, including ball bearing carriages and guide rails, telescoping slides, and more. Support Rail. In stock and ready to ship. Guide Rail. These double row angular contact ball bearings have an outer ring with a gothic arch profile raceway,. 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. 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 roller bearing guides, including linear motion shafts, ball bearing carriages and guide rails, and more. Side-Mount Ball Bearing Carriages and Guide Rails . Rubber. Simple Slide Positioning Unit. They are available in seven installation sizes, and users have the choice between three different carriage options: with manually or automatically adjustable clearance or an extremely robust heavy-duty version. It is a complete offering of rails and carriages in a broad range of styles, sizes and unique features produced to. SWPB bimetal bushings wrapped in a double-layer metal strip. CSN. 8 of the Linear Guide Catalog should be used for relubrication. Extra-Wide Ball Bearing Carriages and Guide Rails. The linear bearing is mounted on either a square or round rail depending on the requirements of the application. Steel ball bearings are quite common, but. They're good for use in areas where multiple carriages or rails won't fit. Sleeve Bearing Carriages and Guide Rails Linear bearings with bended C-profile. For applications with low clearance, these carriages protrude less than 5 mm above their 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. 8M high quality products and 80 sextillion configurable parts available with fast shipping and low pricing. Shipping per piece: $17. linear guide with ball bearing KUEM series. Choose from our selection of aluminum extrusion carriages, including over 750 products in a wide range of styles and sizes. Ball bearings provide accurate movement and positioning at high speeds under heavy loads. With a larger contact area than ball bearing carriages, roller bearing carriages provide better positioning accuracy and support heavier loads. In stock and ready to ship. Choose from our selection of linear slides, including ball bearing carriages and guide rails, telescoping slides, and more. Their key advantage is derived from ball conforming grooves on both inner and outer races that increases load capacity relative to standard round. These 500 series profile rails guide single or multiple ball carriage systems. Choose from our selection of ball bearing carriages and guide rails, support-rail shafts, linear motion shafts, and more. 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. T-Slotted Framing LinearBearings and Track Rollers. Note for ordering: Fastening screws are supplied. The dimensions of the drylin® T linear rail guides and carriages are the same as the usual recirculating ball bearing guides. T-Slotted Framing LinearBearings and Track 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. 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. The HGR25 Linear Rail has great performance and capability of making very accurate and stable CNC Machines. Eject the plastic block in the slider. back next. Mount components to these load-rated bearings and track rollers to add linear motion along T-slotted rails. 6693 inch. Choose from our selection of linear motion guides, including ball bearing carriages and guide rails, track roller carriages and guide rails, and more. While pushing the slider, hold the tail of the slider with your hands behind your back. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. Bearing Material. High-Cycle Extra-Wide BallBearing Carriages and Guide Rails. Free shipping. Ball-bearing carriages and rail systems create less friction and resist misalignments. IKO 25mm x 480mm Linear Roller Way Rail Guide. Use them in areas where multiple carriages or rails won't fit. These tiny carriages and guide rails are sized for electronic and other precision applications. 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. Cam rollers can commonly reach speeds up to 10 m/s (394 in/s). An inconsistent diameter of a few balls in the carriage. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Mechanical Drive System. This linear guide rail is produced from high-quality bearing steel. In stock and ready to ship. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. 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. Extra-Wide Ball Bearing Carriages and Guide Rails. Burrs (leftover pieces of metal from machining) on the linear guide or in the carriage channels. 3 variants. Ball-bearing carriages and rail systems create less friction and resist misalignments. Ball-bearing carriages and rail systems create less friction and resist misalignments. 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. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. 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,. They are used in applications where precise movement of small loads is critical, such as medical diagnostics, test and measurement equipment, semiconductor processing, and micro manufacturing. - THK IKO INA CNC. Good for hydraulic systems, machine tools, and other high-torque applications, these shafts have teeth that transmit high rotational loads. or Best Offer. They are commonly used in industrial, commercial, and residential applications. 003. They can be modified with accessories in the field without removing the carriage. These added processes and inspections result in some of the straightest rails in the market today, improving machine accuracies wherever the 500 Series Ball is used. Sizes 15/20/25/30mm (guide width) Available up to 4000mm lengths. These 500 series profile rails guide single or multiple ball carriage systems. Linear Motion Guides. End seals keep lubricant in and dirt out. admin@gyballscrew. Side-Mount Ball Bearing Carriages and Guide Rails. Extra-Wide Ball Bearing Carriages and Guide Rails. Properties of the linear guideways series CG: Standard series in O arrangement. 329 products. The carriage is slightly too big for the rail, or vice versa. They can be modified with accessories in the field without removing the carriage. This reduces the noise, heat, friction, and dust they produce, so carriages can travel back and forth along the rail many times. Choose from our selection of aluminum extrusion carriages, including over 750 products in a wide range of styles and sizes. They're good for use in areas where multiple carriages or rails won't fit. These standards mount to a hanging bracket or track, making them easier to install than other standards. 84 $ 15. 0 lb. Examples of the former include roller and XY tables as well as machine and dovetail slides. Micro vibrations caused by surface imperfections on carriage bearings can affect precision. BROWSE CATALOG Positioning Slides for Universal Robots. The place pointed by the arrow in the. Anti-Reflective Miniature Ball Bearing Carriages and Guide Rails. Ball-bearing carriages and rail systems create less friction and resist misalignments. Side-Mount Ball Bearing Carriages and Guide Rails. The tolerances are in the range of 0. 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. Minimize friction as parts move along a shaft. This paper presents a model of a linear roller guide that considers geometric errors in rails. Shop Ball Bearing Carriages at Reid Supply 70+ years of expertise. The lubricant in these mounted ball bearings is NSF registered H1 and FDA compliant for incidental contact with food. ball linear guide BNS series. High traverse speeds of up to 7 m/s and extremely quiet (faster and quieter than systems with recycling ball bearings). Choose from our selection of locking rails, including over 150 products in a wide range of styles and sizes. They're good for use in areas where multiple carriages or rails won't fit. These linear ball carriages mount on AccuMini guide rails. Carriage. 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. Motion Accuracy. Ball profile guide rail LLT and profile rail bearing are widely spread in many industries and are nearly used for any linear guide application. Slides only extend 3/4 of the closed length to reduce the chance that a heavy load will tip your cabinet. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. End seals keep lubricant in and dirt out. 871 products. They consist of a y axis support for x-axis girders. Linear Motion Slides. Thomson linear guide rails and carriages are designed to precise linear motion for various applications, such as machine tools, semiconductors and medical equipment. 0 lb is centered horizontally fore/aft and left to right in a typical dual rail and four carriage set, each of the bearing blocks would be statically loaded at 10. Assembled rail and carriages are dimensionally interchangeable with recirculating ball bearing guides *TW-03-25 carriages run on rail part # TS-01-20; from 76. In stock and ready to ship. Buy online with next day delivery. They can be modified with accessories in the field without removing the carriage. They can be modified with accessories in the field without removing the carriage. Air Slides. All Axis On Precision Ball Bearing Carriage Guide Rails. Load: 14,700 N - 159,600 N. These guides fit most band saws. Straight rails have close tolerances that support high loads and provide precise ball movement. 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. Guide Rail. 871 products. 35 inch. Special Offer: Clearance. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. Partial-Extension Lock-Open Drawer Slides. Bearing carriage (block): The housing for the bearing balls or rollers which is mounted onto the linear guides (rails). 842 products Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. And since they are available in a variety of sizes and capacity levels, they are used in many different applications. Mount in. 11 strokes for selection, minimum 100mm, maximum 1050mm, maximum speed 900mm/s, motor capacity 200W, screw path 5/10/20mm. In the example above, if the applied. Slip-On Framing and Fittings. 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. Hard anodized aluminum. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. Standard carriages are narrower than flanged carriages, making them better for confined spaces. Guide Width or Diameter: 0. 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. 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. They're good for use in areas where multiple carriages or rails won't fit. 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. These 500 series profile rails guide single or multiple ball carriage systems. FZP POM Plastic Cage Ball Retainer is guide pin bush. 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. Linear guide rails mount on surfaces and facilitate precise vertical or horizontal movement of carriage systems. Soldering Fixture. Positioning Slides for Universal Robots. A handle on the side of the carriage locks the carriage in place. $15. Straight rails have close tolerances that support high loads and provide precise ball movement. In stock and ready to ship. Linear Sliding Rails. End Seal Material. 4lbf*ft) (size 20) Torque-resistant sliding elements made from iglide® J. Choose from our selection of track rollers and guide rails, track roller carriages and guide rails, ball bearing carriages and guide rails, and more. Strut Channel. Closed anodized aluminum housing. The system runs with low noise even under heavy loads. 7 kN. With a wide base and low-profile design, these carriages and guide rails stabilize moment (twisting) and off-center loads. For large side forces, hard mounting is recommended to resist any translation . Dimensionally identical to standard commercial linear carriages with recirculating ball bearing guides. 81") Block: MGN12H ball bearing carriage. Note: Each carriage can only be used with its corresponding guide rail. 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. The enables both the rollers and carriage to travel together along the guide rail. Precision linear shafts guide bearings and slides in single-axis motion and positioning. MISUMI USA has all of your Standard Linear Guides needs covered, with over 3. They're good for use in areas where multiple carriages or rails won't fit. Suitable for clean room use, these carriages and guide rails are made entirely of stainless steel. Linear Motion. Food Industry Linear Sleeve. 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. Track Sets for Bypassing Cabinet Doors. They can be modified with accessories in the field without removing the carriage. Preload = 1. Use it to prevent wear and corrosion to keep carriages, guide rails, slides, tracks, and ways fast and accurate. 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. Material: Steel. Choose from our selection of track roller carriages and guide rails, track rollers and guide rails, ball bearing carriages and guide rails, and more. 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. $99. Low-Profile Linear Guide Carriage - Short/Standard/Long, Interchangeable, 411/413. Carriage Width. bearing guide and rail. 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. 6 mm Long, Static Load Capacity: 15. Straight rails have close tolerances that support high loads and provide precise ball movement. CNC Linear Guide Rail Slide Stage Actuator Ball Screw Motion Table Nema 23 Motor. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. A plastic cage surrounds the ball bearings and keeps them from colliding, so these carriages run for many cycles without needing maintenance. 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. 3,794 products. NLGI viscosity grade is a rating of a grease's consistency. Bearing Washers. 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. High-temperature PTFE-thickened grease enables these carriages to operate in temperatures up to 500° F, higher than any other carriage that we offer. The guide rail bearing installation steps are as follows: 1. Use them for low speed applications. MGN carriages feature two bearing raceways, while the HG series goes up to four which provides lower friction. Profile Rail Linear Guides. 005” per 12″ inchesLinear System: All Axis On Precision Ball Bearing Carriage Guide Rails Mechanical Drive System: X-Axis & Y-Axis Rack & Pinion, Made In USA Mechanical Drive System: Z-Axis – Full CNC’d Billet Precision Ball Lead-Screw System Interface: Linux OS Motion Accuracy: (+) or (-) 0. Contact us for pricelist. Straight rails have close tolerances that support high loads and provide precise ball movement. End seals keep lubricant in and dirt out. 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. Linear Bearings. For longer travel lengths, guide rails can be butt-jointed together. For smooth, accurate movement around curves and loops, these carriages have ball bearings that work well in high-speed, high-load applications. In. This linear guide rail is produced from high-quality bearing steel. 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. For drylin® Miniature guide rails sizes 12mm and 15mm (mounting-base width) Black zinc carriage with iglide® J liner material. Side-Mount Ball Bearing Carriages and Guide Rails. Choose from our selection of ball bearing carriages and guide rails, mounted linear bearings, drawer slides, and more. All of these carriages have a wide base and low-profile design to stabilize moment (twisting) and off-center loads. These 500 series profile rails guide single or multiple ball carriage systems. These 500 series profile rails guide single or multiple ball carriage systems. Shop Linear Guide Rail - Profiled, Ball Guide Rail from Bosch Rexroth. End seals keep lubricant in and dirt out. When it comes to 15 Wide 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. For drylin® Standard guide rails 15/20/25/30mm (guide widths) Adjustable bearing clearance. 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. In stock and ready to ship. Guide: This is the mounting system for the linear bearing, also. 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. Suggestions are given for further considerations, including fixing the axial position of the twin leadscrew, accurately. These 500 series profile rails guide single or multiple ball carriage systems. Mount to vertical surfaces for applications where tight tolerances aren't required. linear guide with ball bearing KUEM series. 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 rail bearings, including ball bearing carriages and guide rails, track roller carriages and. 1 mm/1000 mm. 001 to . Roller rail systems +++ +++ Position measuring function optional Clamping and braking units optional Machine tool, Measuring machine Configurator & CAD files : Miniature ball rail systems + +-Microelectronics, Medical technology, Optical industry Configurator & CAD files : Cam roller guides---Applications with high speed ≤ 10m/s Configurator. They are used in applications involving long, unlimited stroke lengths, high loads, high rigidity and low friction. A z-axis support may be added to enhance the strength of the overall structure. 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. Purchase THK products ONLINE, Linear Motion Guides, Actuators, Ball Screws, Cross Roller Rings, Linear Bushings, and even Custom Parts. If this value is exceeded, a roll moment will be introduced into the carriages, which can result in shortened bearing life. Choose from our selection of ball bearing carriages and guide rails, support-rail shafts, linear motion shafts, and more. Mount to vertical surfaces for applications where tight tolerances aren't required. Soldering Fixture. They can be modified with accessories in the field without removing the carriage. Note: Stamped and rolled guide rails. Precision linear shafts guide bearings and slides in single-axis motion and positioning. With a larger contact area than ball bearing carriages, roller bearing carriages provide better positioning accuracy and support heavier loads. 58mm) bearing balls, whereas MGN12 carriages use 3/32″ (2. They're good for use in areas where multiple carriages or rails won't fit. Ball Bearing Carriages And Guide Rails (2291 products available) Chinese Brand 25mm HGH25CA Linear Ball Bearing Linear Carriage Block Linear Guide Rail. Best Match; Time: ending soonest;. 002. Half the weight of steel, this aluminum framing resists corrosion in wet environments. 2/4/6/8PCS 2020 3030 4040 2040 Extrusion Anodized T Slot Linear Rail 300-1000mm. Mount in any orientation without affecting load capacity. With multiple adjust options (Auto, Non, and Manual) as well as corrosion-resistant aluminum, this friction guide can handle any. Mount 1 mm wd. In stock and ready to ship. Both are dimensionally identical, allowing for easy one-to-one replacement. Carry loads along guide rails on accurate and repeatable paths in automated systems. Guide loads along angle rail tracks in food and pharmaceutical plants or other sanitary environments. Also known as profile rails, they keep. They are used where there is a need for a precise linear guiding system for heavy loads with high rigidity and low friction. 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. Support higher loads than ball bearings, but run at lower speeds. Guide Rails. Side-Mount Ball Bearing Carriages and Guide Rails. Gantry Rails. They also keep parts and machinery moving and aligned. 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. Sealed Linear Bearings. wide miniature corrosion-resistant. This grease fills in those imperfections so carriages roll smoothly. 9 in / 1700 mm long HSR20 rail shafts, 4 HSR20 bearing blocks, and a bunch of dust-proof plugs.