Smooth Silent Ecological
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1 Technical Reference Roller Smooth Silent Ecological Accessories for Long-Term, Maintenance-Free Operation Optimum Lubrication and Dust Prevention Options for Various Applications For details, visit THK at Product information is updated regularly on the THK website. CATALOG No.269-3E
2 Accommodation of Long-Term, Maintenance-Free Operation Introduction to Accessory Lineup 1 Lubrication Accessories for Long-Term, Maintenance-Free LM Guide Ball Screw Purpose The QZ Lubricator is installed on both ends of an LM block or ball screw nut. It supplies optimal amounts of lubricating oil to ball raceway to form an oil film between the balls and raceway for the realization of long-term, maintenance-free operation. Screw shaft Sketch Drawings QZ locking screw Balls Ball screw nut Structural Diagrams Case High oil content fiber network (End seal) Oil control plate Flow of lubricating oil High-density fiber network Balls Ball cage Flow of lubricating oil High oil content fiber network Sealed case Ball screw nut Screw shaft Oil control fiber Network Direct application to raceway High-density fiber network Principle The structure is composed of three major components consisting of a high oil content fiber network (which functions to store lubricating oil), high-density fiber network ( which functions to apply lubricating oil to the surface of the rolling grooves), and oil control plate, fiber network (which functions to control the flow of lubricating oil). Application of lubricating oil by the Lubricator QZ is based on the principle of capillary action that is used in felt-tip pens and other products. Features * Lubrication maintenance intervals can be significantly extended by compensating for lubricating oil loss during the course of operation. * Application of only the optimal amount of lubricating oil required for lubrication onto the surface of the rolling grooves prevents contamination of surroundings resulting in an environmentally-friendly system. * Enables selection of lubricating oil to match the particular application.
3 In addition to longer service life, faster operation and lower noise levels, machine tools, liquid crystal and semiconductor production systems, automated machinery, health care equipment and a wide range of other devices have recently been required to also respond to needs relating to environmental protection and conservation of resources. engaged in product development that is based on the concepts of environmental protection, energy conservation and long service life, and offers a vast lineup of Accessories that make it possible to realize long-term, maintenance-free operation even under harsh environmental conditions. 2 Dust Prevention Accessories for Long-Term, Maintenance-Free Operation LM Guide Laminated Contact Scraper LaCS Ball Screw Wiper Ring W Purpose LaCS are installed on both ends of an LM block to prevent entry of contamination particles. Wiper rings are installed on both ends of a ball screw nut to prevent entry of contamination particles. Mounting bolts LM block Sealing ring Metal scraper Wiper ring Sketch Drawings End seal LM rail Sealing ring Wiper ring Screw shaft Ball screw nut LaCS Structural Diagrams Ball cage Balls LaCS Liquid Large amount of contamination particles Spring Multi-slit A Contamination particles Multi-slit Screw shaft Direction of rotation Close-up of section A Principle Features Contamination particles are removed in multiple stages using a laminated contact structure (3-layer scraper). * A three-layer scraper makes contact over the entire surface of the LM rail resulting in excellent foreign matter removal capabilities. * The use of oil-impregnated synthetic foam rubber having a self-lubrication function realizes low friction resistance. As a result of the wiper ring employing a structure in which it is brought into surface contact with the outer diameter of the ball screw shaft by a spring, foreign matter on the surface of the ball screw shaft is removed through slits at eight locations in the wiper ring by rotation of the ball screw. * Contamination particles are successively removed with 8 slits located around the wiper ring to prevent entry of contamination particles. * Contact with the ball screw inhibits leakage of grease. * Heat generation is held to a minimum due to the wiper ring being held in contact with the shaft at a constant pressure by a spring. * The use of materials having excellent wear and chemical resistance results in low levels of performance deterioration even after long-term use.
4 Accessories for Use in Normal Environments Normal environment Long-term, maintenance-free operation LM Guide + HSR Caged Ball LM Guide SHS SSR Caged Roller LM Guide SRG NR/NRS SNR/SNS SHW SRS SRN Caged Ball LM Guide + SHS SSR Caged Roller LM Guide SNR/SNS SHW SRS SRG SRN SRW Ball Screw + BNFN BNF BIF DIK DK BTK High-Speed Caged Ball Screw (DN value up to 160,000 : SBK) SBK HBN SBN High-Speed Caged Ball Screw + (DN value up to 160,000 : SBK) SBK SBN
5 Application 1 When Using a Conventional Full Ball Type Installing the on a full ball type realizes long-term, maintenance-free operation. General industrial machinery Health care equipment Transport systems General-purpose machine tools Balls Ball Cage Application 2 When Making Ecological Accommodations Use of a caged ball type realizes long-term, maintenance-free operation. General industrial machinery Injection molding machines Electrical discharge machines Liquid crystal and semiconductor production systems Three-dimensional measuring instruments Precision optical stages Ball Cage Application 3 When operating at high speed and consuming large amounts of lubricating oil End cap Balls Ball screw nut Two-raceway, large-lead screw shaft Installing the on a Caged ball type makes it possible to compensate for oil loss. High-speed chip mounters Injection molding machines Various types of high-speed transport systems High-speed robots High-speed, general-purpose machine tools
6 Accessories for Use in Harsh Environments Harsh environment Caged Ball LM Guide + Metal Scraper + Laminated Contact Scraper LaCS + SHS SSR SNR/SNS SHW Wood chips, metal cuttings, coolant, metal cuttings + coolant Ball Screw + + Wiper Ring W BNFN BNF BIF DIK DK BTK Caged Roller LM Guide + Metal Scraper + Laminated Contact Scraper LaCS + SRG SRN SRW High-Speed Caged Ball Screw + Wiper Ring W + (DN value up to 160,000 : SBK) SBK SBN
7 Metal scraper End seal End seal LaCS Plate cover Inner seal Sealing ring Wiper ring Side seal Application 1 Highly Rigid Structures Welding machines (servo gun) Laser machining systems Punching presses Graphite machining systems Woodworking machines Machining centers NC lathes High-rigidity machine tools Wiper ring Sealing ring Application 2 Ultra-Highly Rigid Structures End seal LaCS Metal scraper Inner seal Side seal Ultra-high-rigidity machine tools High-precision machining centers High-precision NC lathes Jig borers Five-axis processing machines Application 3 High-speed Movement Wiper Ring Welding machines (servo gun) Laser machining systems Punching presses Graphite machining systems Woodworking machines High-speed machining centers High-speed NC lathes
8 Performance of the LM Guide 1) Significant Extension of Maintenance Intervals Installation of the is effective for extending maintenance intervals over all load ranges from light loads to heavy loads. Heavy load Intermediate load Light load Calculated lifetime of heavy load: 400 km Grease lubrication only 465km Grease + 962km Grease + Grease + LM Guide: HSR35R1SS specifications Conditions Load Speed Calculated lifetime Heavy load 18.6kN 50m/min 400km Intermediate load 9.3kN 50m/min 3,200km 3,500km Light load 1.4kN 300m/min Grease: 2 cc/lm block (Initial injection only) QZ Lubricator: 5 cc/lm block (Initial injection only) x 2 30,000km ,000 1,500 3,500 30,000 Distance traveled (km) Operation Test of LM Guide without Supplying Lubricant 2) Effective Utilization of Lubricating Oil Since the provides a suitable amount of lubricating oil at suitable locations, lubricating oil can be used effectively without waste. Comparison of amount of lubricating oil used after traveling 5,000 km Test conditions: 300m/min SHW21QZ Forced lubrication Amount of lubricating oil supplied ( ) 83.3 Oil content of 0.166cm 3 x 2 = 0.332cm 3 Comparison Forced lubrication 0.03cm 3 /6 min x min = 83.3cm 3 The amount of lubricating oil used was 1/250th that of forced lubrication. 3) Lubrication Supportive Effects in Harsh Environments 5,000 km endurance testing was conducted in a harsh environment (in the presence of coolant and foreign matter). [Test Conditions] [Test Results] Type Load Speed Coolant Foreign matter Lubrication SNS45 Applied load/dynamic standard rated load C/P = m/min HSR45 Immersed for 48 hours, dried for 96 hours Cast powder (125 m or smaller) AFA Grease + QZ Super-Multi 68 Operating cycle:0.1cc/shot Intermittent time:16min QZ+LaCS Undamaged SNS45 Standard product Flaking at 3,500 km HSR45 0 1,000 2,000 3,000 4,000 5,000 6,000 Distance traveledkm * In the case of using in harsh environments, please use the in combination with the Laminated Contact Scraper LaCS (see page 5).
9 Performance of the LM Guide Laminated Contact Scraper LaCS 1Testing in Water-Soluble Coolant Environment Enlarged Photograph of End Seal Lip Test Conditions No.1End seals only: Damaged lip at 1700 km Item Description Sample No.1 No.2 Max. speed Environmental conditions SHS45R1SS+3000L (end seals only) SHS45R1SSHH+3000L(LaCS installed on end seals) 200mmin Coolant application cycle: 5 times/day f f f Test Results No.1 End seals only 1700km Damage to end seal lips Arrows indicated damaged areas No.2LaCS installed on end seals: No abnormalities after traveling 5000 km No.2 LaCS installed on end Seals Still operating at 5000 km Distance traveled (km) No damage to the lip 2Testing in Microscopic Foreign Matter Environment Test Conditions Sample Item No.1 No.2 Max. speed and acceleration External load Foreign matter Description SNR45R1DD+600L installed with ( double seals only) SNR45R1HH+600L(installed with LaCS only) 60mmin1G 9.6kN particle size of 125m TypeFCD450#115 ( or smaller conditions ) total amount applied: Amount applied: 1g/hr 120 g ( ) NO.1 After Traveling 100 km (double seal only) A large amount of foreign matter is present on the ball rolling surfaces. Test ResultsAmount of Foreign Matter on Rolling Surfaces Amount of foreign matter Seal configuration on rolling surfacesg] Conventional dustproofing specifications Double seal specifications (two superimposed end seal structures) LaCS specifications Sample 1 Sample 2 Sample 3 Sample 1 Sample NO.2 After Traveling 100 km (LaCS only) Sample Foreign matter is confirmed to be absent on ball rolling surfaces.
10 Performance of the Ball Screw 1) Significantly extended maintenance interval Since QZ Lubricator continuously feeds a lubricant over a long period, the maintenance interval can be extended significantly. QZ Lubricator only No anomaly observed after running 10000km Distance traveled [Linear travel distance] (km) [Test conditions] Item Ball Screw Maximum rotational speed Maximum speed Stroke Load Description BIF min -1 25m/min 500mm Internal preload only 2) Environmentally friendly lubrication system Since QZ Lubricator feeds the right amount of lubricant directly to the raceway, the lubricant can effectively be used without waste. QZ Lubricator 32 Model No. : BNFN3612-5G0+1500LC5 Traveling speed: 20km/d Travel distance: 2500km Forced lubrication Amount of oil (j) QZ Lubricator + THK AFA Grease 32j (QZ Lubricator attached to both ends of the ball screw nut) Compared Forced lubrication 0.25j3min24h125d = 15000j 1 Reduced to approx. 470
11 1) Testing in a Foreign Matter Environment [Test Conditions] Item Type Max. rotational speed Max. speed Max. peripheral speed Time constant Dwell Stroke Load (by internal pre-loading) Grease Cast powder Amount of foreign matter per shaft Performance of the Ball Screw Wiper Ring W Description BIF32105G01500LC5 1,000min -1 10m/min 1.8m/s 60ms 1s 900mm 1.31kN AFG Grease 8cm 3 initial charging into ball screw nut only FCD400, mean particle size: 250m 5g/h [Test Results] Wiper Ring Labyrinth Seal No problems ,000 1,200 1,400 1,600 1,800 2,000 Distance traveled (km) Flaking on screw shaft Flaking on balls (1) Wiper Ring Specifications Slight flaking occurred on the ball screw after traveling 1,000 km. (2) Labyrinth Seal Specifications Flaking occurred over all screw shaft rolling channels after traveling 200 km, and flaking occurred on the balls after traveling 1,500 km. After traveling for 2,000 km Labyrinth seal Balls New ball Ball after travel New ball Ball after travel Ball wear(m) Wiper ring * Discolored but no damage (1) Wiper ring specifications * Flaking occurred 2 (2) Labyrinth seal specifications ,000 1,500 2,000 (1) Wiper Ring Specifications Distance traveled (km) The amount of ball wear was 1.4 m after traveling 2,000 km. (2) Labyrinth Seal Specifications Wear proceeded rapidly starting at 500 km, and the amount of ball wear was 11 m after traveling 2,000 km. 2) Heat Generation Test [Test Conditions] Item Type Max. rotational speed Max. speed Max. peripheral speed Time constant Stroke Load (by pre-loading only) Grease Description BLK3232DG01426LC5 1,000min -1 32m/min 1.7m/s 100ms 1000mm 0.98kN AFG Grease 5cm 3 (charged into ball screw nut) [Test Results] Shaft center temperature : Heat generation temperature Temperature rise Distance traveled min With wiper rings With wiper rings Without seals Units: Without seals
12 LM GUIDE and are registered trademarks of THK CO., LTD. The photo may differ slightly in appearance from the actual product. The appearance and specifications of the product are subject to change without notice. Contact THK before placing an order. Although great care has been taken in the production of this catalog, THK will not take any responsibility for damage resulting from typographical errors or omissions. For the export of our products or technologies and for the sale for exports, THK in principle complies with the foreign exchange law and the Foreign Exchange and Foreign Trade Control Law as well as other relevant laws. For export of THK products as single items, contact THK in advance. All rights reserved NORTH AMERICA THK America,Inc. HEADQUARTERS Phone: Fax: CHICAGO OFFICE Phone: Fax: NORTH EAST OFFICE Phone: Fax: ATLANTA OFFICE Phone: Fax: LOS ANGELES OFFICE Phone: Fax: SAN FRANCISCO OFFICE Phone: Fax: DETROIT OFFICE Phone: Fax: TORONTO OFFICE Phone: Fax: SOUTH AMERICA THK Brasil LTDA Phone: Fax: EUROPE THK GmbH EUROPEAN HEADQUARTERS Phone: Fax: DÜSSELDORF OFFICE Phone: Fax: HEAD OFFICE , NISHI-GOTANDA, SHINAGAWA-KU, TOKYO JAPAN INTERNATIONAL SALES DEPARTMENT PHONE: FAX: Global site : FRANKFURT OFFICE Phone: Fax: STUTTGART OFFICE Phone: Fax: MÜNCHEN OFFICE Phone: Fax: U.K. OFFICE Phone: Fax: ITALY MILANO OFFICE Phone: Fax: ITALY BOLOGNA OFFICE Phone: Fax: SWEDEN OFFICE Phone: Fax: AUSTRIA OFFICE Phone: Fax: SPAIN OFFICE Phone: Fax: TURKEY OFFICE Phone: Fax: PRAGUE OFFICE Phone: Fax: MOSCOW OFFICE Phone: Fax: THK Europe B.V. EINDHOVEN OFFICE Phone: Fax: THK France S.A.S. Phone: Fax: THK CO., LTD. CHINA THK (CHINA) CO.,LTD. HEADQUARTERS Phone: Fax: SHANGHAI OFFICE Phone: Fax: BEIJING OFFICE Phone: Fax: CHENGDU OFFICE Phone: Fax: GUANGZHOU OFFICE Phone: Fax: SHENZHEN OFFICE Phone: Fax: THK (SHANGHAI) CO.,LTD. Phone: Fax: TAIWAN THK TAIWAN CO.,LTD. TAIPEI HEAD OFFICE Phone: Fax: TAICHUNG OFFICE Phone: Fax: TAINAN OFFICE Phone: Fax: KOREA SEOUL REPRESENTATIVE OFFICE Phone: Fax: SINGAPORE THK LM SYSTEM Pte. Ltd. Phone: Fax: INDIA BANGALORE REPRESENTATIVE OFFICE Phone: Fax: E11 Printed in Japan
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