Options for the Ball Screw QZ Lubricator Wiper Ring W

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1 Options for the Ball Screw Lubricator Wiper Ring W CATALOG No.322-1E

2 OPTIONS For Ball Screws, dust-prevention and lubrication accessories are available. You can make a selection according to the application or mounting location. Lubricator Lubricator for the Ball Screw Wiper Ring W Wiper Ring W

3 Lubricator for the Ball Screw Lubricator Ball screw shaft (1) Highly oil-impregnated fiber net fixing screw Sealed case Ball screw shaft Ball screw nut Lubricator Ball Applied directly to the raceway Ball screw nut Air vent (see note) Appearance Drawing Flow of lubricant (3) Oil control plate Structural Drawing (2) High-density fiber net The Lubricator feeds a right amount of lubricant to the ball raceway of the ball screw shaft. This allows an oil film to be formed between the balls and the ball raceway, thus improving lubricity and significantly extending the lubrication maintenance interval. Its structure consists of three major components: (1) a highly oil-impregnated fiber net (functions to store a lubricant), (2) a high-density fiber net (to apply the lubricant to the raceway) and (3) an oil control plate (to control the flow of the lubricant). The lubricant contained in Lubricator is fed to the ball screw shaft, based on the principle of capillary action, which is used in felt-tip pens and other products. Features Since it supplements an oil loss, the lubrication maintenance interval can significantly be extended. Since the right amount of lubricant is applied to the ball raceway, an environmentally friendly lubrication system that does not contaminate the surroundings is achieved Lubricator has an air vent. Do not block the vent with grease or the like.

4 Performance Significantly extended maintenance interval Since the Lubricator continuously feeds lubricant over a long period, the maintenance interval can significantly be extended. Lubricator only No problem after traveling 8,000 km Distance traveled linear travel distance(km) Ball Screw Maximum rotation speed Maximum speed Stroke Load BIF min m/min 500 mm Internal preload only Environmentally friendly lubrication system Since Lubricator feeds the right amount of lubricant directly to the raceway, the lubricant can effectively be used without waste. Lubricator 32 : BNFN3612-5G LC5 Travel distance: 25 km/day Travel distance: 2,500 km Forced lubrication Amount of oil (cm 3 ) Lubricator + THK AFA Grease 32 cm 3 ( Lubricator to both ends of the ball screw nut) Comparison Forced lubrication 0.25 cm 3 /3 min24 hours125 days = 15,000 cm 3 1 Reduced to approx. 470

5 Wiper Ring W for the Ball Screw W Spring Multi-slit A Multi-slit Foreign matter Ball screw shaft Rotational direction Detail view of A Appearance Drawing Structural Drawing With Wiper Ring W, a special resin with high wear resistance elastically contacts the circumference of the ball screw shaft and the screw thread, and eight slits remove foreign matter, thus preventing foreign matter from entering the ball screw nut. Features A total of eight slits on the circumference remove foreign matter in succession, and prevent entrance of foreign matter. Contacts the ball screw shaft to reduce the flowing out of grease. Contacts the ball screw shaft at a constant pressure level using a spring, thus to minimize heat generation. Since the material is highly resistant to wear and chemicals, its performance will not easily be deteriorated even if it is used over a long period.

6 Performance Test in an environment exposed to foreign matter [Test conditions] Item Maximum rotation speed Maximum speed Maximum circumferential speed Time constant Dowel Stroke Load (through internal preload) Grease Foundry dust Volume of foreign matter per shaft After traveling 2,000 km Description BIF3210-5G LC min m/min 1.8 m/s 60 ms 1s 900 mm 1.31 kn THK AFG Grease 8 cm 3 (Initial lubrication to the ball screw nut only) FCD400 average particle diameter: 250 m 5 g/h [Test result] Wiper Ring Labyrinth seal No problem Distance traveled (km) Flaking occurs on the ball screw shaft Flaking occurs on the ball 1) Type with Wiper Ring Slight flaking occurred in the ball screw shaft at travel distance of 1,000 km. 2) Type with a labyrinth seal Flaking occurred throughout the circumference of the screw shaft raceway at travel distance of 200 km. Flaking occurred on the balls after traveling 1,500 km. Wear of ball (m) Type with Labyrinth seal Type with Wiper Ring Ball Unused ball Ball after traveling Unused ball Ball after traveling Discolored, but no breakage Flaking occurs (1) Type with Wiper Ring (2) Type with a labyrinth seal Heat generation test [Test conditions] Item Description BLK G LC5 Maximum rotation speed 1000 min -1 Maximum speed 32 m/min Maximum 1.7 m/s circumferential speed Time constant 100 ms Stroke 1000 mm Load 0.98 kn (through internal load) THK AFG Grease 5 cm Grease 3 (contained in the ball screw nut) Distance traveled (km) (1) Type with Wiper Ring Wear of balls at a travel distance of 2,000 km: 1.4m. (2) Type with a labyrinth seal Starts to be worn rapidly after 500 km, and the ball wear amount at the travel distance of 2,000 km: 11m. [Test result] Temperature at shaft center area () Travel time (min) Heat generation temperature Temperature rise With Wiper Ring Without seal With wiper ring Unit : Without seal

7 Nut s of Ball Screw Models Attached with Wiper Ring (without, Symbol: ) and Models Attached with Lubricator (Symbol: ) / Caged Ball Screw SBN SBK HBN BNF With (without ) : supported : supported with order : not supported : not applicable Caged Ball Screw Caged Ball Screw with A A-2.5 BNF A A A A A-2.5 With + Note: L indicates the nut dimension of models. Models BLW, BLK (precision and rolled), WGF, BNK 1510 or higher (excluding BNK 2010), WTF and CNF are with the wiper ring outside the nut. with

8 : supported : supported with order : not supported : not applicable BNF 3210A A A A A A with A A BNF A A A A A A A BNFN A with

9 : supported : supported with order : not supported : not applicable A A A A A A A A BNFN A A A with A A BNFN A A A A A-7.5 BIF A A A A DIK with

10 : supported : supported with order : not supported : not applicable DIK DK with DK DKN BLW BLK precision WGF with (142.5) (112) (96) (84) (114) (93) (137) (197) (167) *: The numbers in the parentheses indicate the dimensions of models with Lubricator without.

11 : supported : supported with order : not supported : not applicable BNK BNT precision/ rolled BLK rolled with (96) (93) (96) (96) WTF CNF MBF BTK with (84) (114) (137.5) (197.5) (114) (197) JPF *: The numbers in the parentheses indicate the dimensions of models with Lubricator without. Example of model coding BNFN G L C5 Model number With Lubricator Axial clearance Accuracy symbol symbol Overall screw shaft (in mm) With Wiper Ring Lubricator and Wiper Ring "W" are not sold alone

12 Handling Options for the Ball Screw Precautions on Use Lubricator for the Ball Screw Dropping or hitting this product may damage it. Take much care when handling it. Needlessly disassembling this product may cause foreign matter to enter the system or accuracy to deteriorate. Do not disassemble the product unless it is inevitable to do so. Do not clean the product with an organic solvent or white kerosene. Do not leave the product unpacked over a long period. The model number indication section has a hole for air release. Do not block it with grease or the like. Service temperature range The service temperature range for this product is between -10and +50. When desiring to use the product out of the service temperature range, contact THK in advance. Use in a special environment When desiring to use the product in a special environment, contact THK in advance. Rust prevention Lubricator is a device designed to feed the required minimum amount of lubricant to the ball raceway, and therefore it does not have a dust-prevention effect on the whole Ball Screw. Handling Wiper Ring W for the Ball Screw Dropping or hitting this product may damage it. Take much care when handling it. Needlessly disassembling this product may cause foreign matter to enter the system or accuracy to deteriorate. Do not disassemble the product unless it is inevitable to do so. When desiring to use the product in an adverse environment, we recommend using both the wiper ring and Lubricator. Service temperature range The service temperature range for this product is between -20 and +80. When desiring to use the product out of the service temperature range, contact THK in advance. Use in a special environment When desiring to use the product in a special environment, contact THK in advance. Chemical resistance Do not use this product in an atmosphere where the product may come in contact with a solvent such as acid or alkali. 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: NEW YORK OFFICE Phone: Fax: ATLANTA OFFICE Phone: Fax: LOS ANGELES OFFICE Phone: Fax: SAN FRANCISCO OFFICE Phone: Fax: BOSTON 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: THK France S.A.S. Phone: Fax: CHINA THK (CHINA) CO.,LTD. HEADQUARTERS Phone: Fax: SHANGHAI OFFICE Phone: Fax: BEIJING OFFICE Phone: Fax: CHENGDU OFFICE Phone: Fax: GUANGZHOU 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: THK CO., LTD E5 Printed in Japan

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