NSK Linear Guides. HA Series for Machine Tools

Transcription

1 NS inear Guides A Series for Macine ools Premier motion accuracy and rigidity innovative linear guide design, compatible wit ig precision macine tools Patent Pending

2 Unparalleled motion accuracy, rigidity, and load capacity new A Series inear Guides open up new possibilities for macine tools NS inear Guides A Series e A Series is a new member of NS s linear guide product line, long respected for its outstanding accuracy and reliability. NS s exclusive design acieves te igest level of motion accuracy. ig rigidity and ig load capacity ave also been acieved, leading to significant improvement in macine tool quality. Measurement point eatures ig motion accuracy ig motion accuracy is acieved in bot narrow and wide ranges by adopting ultra-long ball slides and new design features. est results of te vibration caused by ball passage 24 5 Vibration caused by ball passage reduced to one-tird of our conventional models e ultra-long ball slides and new design ave reduced te vibration caused by ball passage to one-tird of our conventional models, contributing to improved straigtness of te table (based on te accuracy measurement of narrow range motion, compared wit our conventional models). A Series : A3 Preload: Z3 able dimensions: 46 38mm A Series four ball slides isplacement.12µm Strokes: 2 mm ig rigidity and load capacity wit low friction ig rigidity, ig load capacity, and low friction are acieved by increasing te number of balls. ust proof seals ust-tigt ig performance end seals, bottom seals, and inner seals are built-in as standard features, facilitating long-term macining capability wit ig accuracy. Conventional models : A3 e same table is used. Preload: Z3 isplacement able dimensions: 46 38mm Standard model eigt ball slides.37µm Strokes: 2 mm Application or a variety of macine tools e series is most suitable for macining centers, ig-precision lates, and grinding macines due to its ig motion accuracy. In addition, it is also suitable for discarge macines because of its low friction and ig rigidity. Mecanism of te vibration caused by ball passage y extending te effective ball slide lengt, NS as minimized posture canges in ball slide due to te vibration caused by ball passage. In addition, te vibration as been substantially reduced by adopting an optimally designed crowning sape. 1 2

3 ig rigidity and load capacity, acieved by NS s new proprietary design ig rigidity and load capacity wit low friction ig rigidity and ig load capacity are realized by a substantial increase in te number of balls. or instance, compared wit A35, te A3 features: te same dynamic load rating, wile being one size smaller te same rigidity, wile being two sizes smaller 12% iger rigidity wit one-sixt friction of A35 ig. 1. Comparisons of dynamic load rating of A and A Series ynamic load rating C, N A A One size smaller ig. 2. Comparisons of rigidity of A and A Series Rigidity, N/µm A A wo sizes smaller ig. 3. Comparisons of dynamic friction force and rigidity Rigidity, N/µm Z3 rigidity for A Z1 rigidity for A riction force for A riction force for A One-sixt of dynamic friction force wile improving rigidity to 12% ynamic friction force, N ig dust proofing capability ust-tigt ig performance end seals, bottom seals, and inner seals are built-in as standard features, as sown in ig. 4. e design enables long-term macining capability wit ig accuracy. ig. 4. View of linear guides wit dust-proof seals Inner seal nd seal ottom seal ong-term, maintenance-free operation e NS 1 lubrication unit (optional) can be installed to ensure long-term, maintenance-free operation. Pioneering in te industry Super-finised ball groove feature able 1. imension of linear guides equipped wit NS 1 lubrication unit A A A A all slide lengt ickness of ickness of equipped wit two protection NS 1, V NS 1s 1 cover, V 2 A all slide lengt equipped wit NS 1 = (Standard bearing lengt)+(ickness of NS 1, V 1 Number of NS 1)+ (ickness of te protection cover V 2 2) e super-finised ball groove wit a super-precision rolling groove is also available for even iger accuracy (optional). (e super-finised ball groove can be applied for te ultra-ig precision P3 grade.) 3

4 xtensive lineup of various accuracy grades Accuracy standard and preload our accuracy grades are available: ultra super precision P3, super precision P4, ig precision P5, and precision P6. Sligt preload Z1 and medium preload Z3 are available for preload, wic can be selected for specific applications. able 2. Accuracy standard unit: µm able 3. Running parallelism tolerance unit: µm Accuracy grade Ultra super Super ig Precision precision precision precision Items P3 P4 P5 P6 Accuracy grade otal rail lengt (mm) P3 P4 P5 P6 Over 2 or less Assembly eigt Variation of assembly eigt (All slides on a pair of rails) Mounting widt 2 or 3 Variation of mounting widt 2 or 3 (All slides on datum rails) Running parallelism of face C against face A Running parallelism of face against face ±1 ±1 ±2 ± ±15 ±15 ±25 ± Refer to able 3 for tolerance. See ig. 5 and ig ig. 5. Mounting widt ( 2 ) and running parallelism ig. 6. Mounting widt ( 3 ) and running parallelism C C A 2 1 A 3 able 4. Preload and rigidity Preload (N) Rigidity (N/µm) Sligt preload (Z1) Medium preload (Z3) Sligt preload (Z1) Medium preload (Z3) A A A A A

5 imensions NS inear Guides A Series ree types of A Series linear guides are available: AN ype, A ype, and M ype, all of wic can be selected for specific applications. Mounting oles for ball slides of M type are for bot taps and drills. ig. 7. AN ype ig. 9. M ype (for taps and drills) G d 1 n (G) G d 1 n (G) 5 ig. 8. A ype 1 Assembly dimensions for AN ype and A ype 3 Assembly dimension Assembly dimensions for N ype 1 d 1 G n (G) * e maximum lengt of te rail for P3 grade is 2 mm. ** Rail mounting ole pitc (standard 1/2 pitc) and bolt ole (standard or deep ole) can be selected for all sizes. all slide dimension apped ole Grease nipple eigt idt engt 2 2 M pitc Mounting ole 1 N A25AN M M A3AN M M A35AN M M6.75 A35A A45AN M Rc1/8 A45A A55AN M Rc1/8 A55A Assembly dimension all slide dimension ole position apped ole rill ole Grease nipple eigt idt engt 2 2 M pitc iameter Mounting ole 1 N A25M M M A3M M M A35M M M A45M M Rc1/ A55M M Rc1/ Specification number e specification number indicates te main specifications troug numbers and codes. It is used until te final reference number (indicated in a specification drawing) is assigned upon confirming specifications wit te user. e reference number consists of te specification number, te design serial number, and additional information. Cautions Series code Size No. Rail lengt, mm xample: A 3 85 AN C 2 P3 Z1 all slide sape code AN: Square, A: ow square, M: lange Material and surface treatment code C: Special ig-carbon steel : wo rails, No code: One rail Preload code Z1: Sligt preload Z3: Medium preload Accuracy grade P6: Precision P5: ig precision P4: Super precision P3: Ultra super precision Number of ball slides per rail Rail dimension asic load rating all diameter eigt Rail Rail olt Maximum ynamic Static Static moment (N m) widt eigt pitc olt ole earing Rail 3 G lengt 1 1 ** d ** (recommended) max* C (N) C (N) M RO M PO M YO (kg) (kg/m) / / (2 ) / / (2 ) / / (2 ) / / (2 ) / / (2 ) Rail dimension asic load rating all diameter eigt Rail Rail olt Maximum ynamic Static Static moment (N m) widt eigt pitc olt ole earing Rail 3 G lengt 1 1 ** d ** (recommended) max * C (N) C (N) M RO M PO M YO (kg) (kg/m) / / (2 ) / / (2 ) / / (2 ) / / (2 ) / / (2 ) alls will fall out if a bearing is removed from te rail. A bearing may sift and fall out if te rail is tilted witout using a stopper. e sure to take appropriate safety measures against falling loads wen mounting a bearing upside down (e.g., wen using a bearing facing downward from a ceiling-mounted rail). e sure tat ambient temperature does not exceed 5 C (8 C, instantaneous) wen installing NS 1. In addition, do not allow te unit to come into contact wit degreasing organic solvents