NSK Linear Guides. High-Accuracy Series

Transcription

1 NS inear Guides ig-accuracy Series Suitable for equipment ranging from macine tools to ig-precision instruments ig-performance linear guides wit premier motion accuracy Patent Pending

2 Realizing outstanding motion accuracy wit ig rigidity and load capacity ig-accuracy Series ig-performance linear guides, A ype and S ype rends toward iger performance and enanced quality of electronics equipment and precision instruments ave been accelerating. At te same time, demand as been growing for igly precise production systems tat manufacture suc equipment and instruments. NS strives to always stay aead of competition by providing te industry wit products tat keep pace wit trends and needs of te times. Part of tese products are te ig-performance linear guides, ig- Accuracy Series. e innovative design makes full use of NS s world-class proprietary tecnologies to acieve ig motion accuracy, ig rigidity and ig load capacity wile reducing frictional resistance. e ig-accuracy Series is available for macine tools suc as macining centers and ig-precision lates, as well as for ig-precision instruments for manufacturing semi-conductors and liquid crystal displays, among oter applications, all of wic are required to meet te ever-increasing demand for iger accuracy. ese linear guides are terefore well-suited for a broad variety of macinery and equipment tat are expected to deliver ig-level performance. eatures ig-performance linear guides, ig-accuracy Series ig-accuracy Series Dust proof seals igly dust-tigt end seals, bottom seals, and inner seals are built-in as standard features, facilitating long-term macining capability wit ig accuracy. ig. 1 itting positions of eac seal 1. ig motion accuracy ig motion accuracy is acieved in bot narrow and wide ranges by adopting ultra-long ball s and optimum design features for te ball recirculation component. 2. all passage vibration reduced to one-tird of our conventional models ests sow ball passage vibration as been reduced to one-tird of our conventional models, dramatically improving table straigtness. 3. Installation of rail wit greater accuracy Increased counterbore dept of te rail mounting ole reduces rail deflection, wic is caused by bolt tigtening wen fixing te rail to te base component, to 5% or less. is feature restrains te pitcing motion of ball wose frequency matces to te mounting ole pitc. In addition, te lengt of mounting ole pitc as been reduced by onealf of te conventional models, so te rail can be more accurately installed in position. Inner seals nd seals ottom seals A ype applications e A ype linear guides feature improved dust resistance and are ideal for suc macines as macining centers, ig-precision lates and grinding macines, for wic iger motion accuracy is required. In addition, tey are suitable for discarge macines because of teir low friction and ig rigidity. 4. ig rigidity and load capacity wit lower friction ig rigidity, ig load capacity and low friction are acieved by increasing te number of balls. 5. Compact design Reduced body size enables more compact macinery. able 1 xamples of ig-accuracy Series applications (based on actual results) Application Adverse effects from ball passage vibration Advantages of ig-accuracy Series Macining center, grinding macine, dicer, and slicer Coater (linear motion type) Plastics processing equipment ig-precision table Poor finis of worked surface Uneven coated surface of resist law nearly twice as large as ball diameter in pitc occurs in worked surface Deterioration in motion accuracy of table Ultra-long ball s control posture canges in bearing wic may be caused by ball passage vibration and rail waviness. Optimum design of ball recirculation components enables te ball to move smootly and restrain ball passage vibration. Deep counterbore of mounting ole for rail contributes to reducing possible rail deformation and restricting ball pitcing motion. ow friction, compact size Stainless steel models are also available In order to flexibly meet a variety of needs, stainless steel models tat are igly resistant to corrosion are also optionally available. S ype applications e S ype linear guides place special empasis on lower frictional resistance and compactness and are terefore best suited for dicers, slicers and various manufacturing devices for semi-conductors and liquid crystal displays, for wic ig-grade accurate surface finis operations are required, including measuring instruments for making igly accurate measurements. 1 2

3 ig-accuracy Series est results of ball passage vibration all passage vibration can translate into posture canges in te ball wic result from ball passage (circulation). In te ig-accuracy Series, tis vibration as been substantially reduced to one-tird of conventional models. ig rigidity and ig load capacity wit low friction Substantially increasing te number of balls in bot A ype and S ype acieves iger rigidity and load capacity as well as reduced frictional resistance, compared to our conventional models. A ype S ype Measurement point or example, compared wit A35, te following A models feature: te same dynamic load rating, at one size smaller (A3) te same rigidity, at two sizes smaller (A25) 12% iger rigidity wit one-sixt friction (A35) or example, compared wit S3, te following S models feature: te same dynamic load rating, at one size smaller (S25) te same rigidity, at tree sizes smaller (S15) 11% iger rigidity wit one-fift friction (S3) ig. 5 Comparisons of dynamic load rating ig. 8 Comparisons of dynamic load rating A ype : A3 Preload: Z3 24 A ype four ball s 5 ig. 2 Scematic view of measurement of ball passage vibration Straigtness.12 m Dynamic load rating C [N] A A One size smaller Dynamic load rating C [N] S S One size smaller able dimensions: 46mm 38mm Conventional models : A3 Preload: Z3 able dimensions: 46mm 38mm e same table is used. Conventional model eigt ball s Straigtness Strokes: 2mm Strokes: 2mm ig. 3 Measurement results of A ype and conventional models.37 m ig. 6 Comparisons of rigidity A A wo sizes smaller ig. 9 Comparisons of rigidity S S ree sizes smaller S ype S ype four ball s.12 m : S3 Preload: Z1 able dimensions: 46mm 38mm Conventional models : S3 Preload: Z1 able dimensions: 46mm 38mm e same table is used. Conventional model eigt ball s Straigtness Straigtness Strokes: 2mm Strokes: 2mm ig. 4 Measurement results of S ype and conventional models.36 m ig. 7 Comparisons of dynamic friction force and rigidity 1 6 Z3 rigidity for A Z3 dynamic friction force for A 8 Z1 rigidity for A Z1 dynamic friction force for A One-sixt of dynamic friction force wile improving 1 rigidity to 12% Dynamic friction force [N] ig. 1 Comparisons of dynamic friction force and rigidity 8 8 Z3 rigidity for S Z3 dynamic friction force for S 7 Z1 rigidity for S Z1 dynamic friction force for S 7 6 One-fift of dynamic friction force wile improving rigidity to 11% Dynamic friction force [N] 3 4

4 xtensive selection of accuracy grades Option for iger functionality ig-accuracy Series 5 Accuracy standard and preload ree accuracy grades are available: ultra super precision P3, super precision P4, and ig precision P5. Sligt preload Z1 and medium preload Z3 are available for preload, wic can be selected for specific applications. able 2 Accuracy standard unit: µm Accuracy grade Ultra super Super ig precision precision precision Items P3 P4 P5 Assembly eigt ±1 ±1 ±2 Variation of assembly eigt (All s on a pair of rails) Mounting widt 2 or 3 ±15 ±15 ±25 Variation of mounting widt 2 or (All s on datum rails) Running parallelism of face C against face A Running parallelism of face D against face able 3 Running parallelism tolerance Refer to able 3 for tolerance. See ig. 11 and ig.12. Accuracy grade otal rail lengt (mm) P3 P4 P5 Over 2 or less able 4 Preload and rigidity A ype Preload (N) Rigidity (N/µm) Sligt preload Medium preload Sligt preload Medium preload (Z1) (Z3) (Z1) (Z3) A A A A A Specification number Series code Size No. lengt, mm xample: all sape code AN: Square, A: ow square, M: lange ( 1) Material and surface treatment code C: Special ig-carbon steel : Stainless steel D: Special ig-carbon steel + Surface treatment : Stainless steel + Surface treatment unit: µm S ype S 3 1 A C ig. 11 Mounting widt ( 2 ) and running parallelism C C D D 2 ig. 12 Mounting widt ( 3 ) and running parallelism Preload (N) Rigidity (N/µm) Sligt preload Medium preload Sligt preload Medium preload (Z1) (Z3) (Z1) (Z3) S S S S S e specification number indicates main specifications troug numbers and codes. e specification number 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 code, te design serial number, and additional information as applicable. 3 No code : One rail 11 : wo rails (*2) Preload code 1: Sligt preload 2: Medium preload Accuracy grade itout 1 P3: Ultra super precision, P4: Super precision, P5: ig precision it 1 3: Ultra super precision, 4: Super precision, 5: ig precision ( 2) Design serial number Number of ball s per rail ( 1) Surface treatment is provided by low-temperature black crome plating (black surface coating by electrolytic protection against corrosion). Optional low-temperature crome plating treatment tat furter improves anticorrosion properties by means of fluorocarbon resin coating is also available. ( 2) Design serial number is appended to delivery reference number (model number), wic in turn does not reflect te final number. ong-term, maintenance-free operation e NS 1 lubrication unit can be installed to ensure long-term, maintenance-free operation. able 5 Dimensions of linear guides equipped wit NS 1 lubrication unit A ype unit: mm S ype all lengt ickness of ickness of equipped wit protection NS 1, V two NS 1, 1 cover, V 2 A A A A A V 1 V 2 V 2 V 1 ig. 13 all equipped wit NS 1 Protection cover nd seal NS 1 all lengt equipped wit NS 1 = (Standard bearing lengt) + (ickness of NS 1, V 1 Number of NS 1) + (ickness of protection cover, V 2 2) Pioneering in te industry wit super-finised ball groove feature e super-finised ball groove wit a super-precision rolling groove is also available as an option for even iger accuracy. (e super-finised ball groove can be applied for te ultra super precision P3 grade.) Precautions for proper use and andling Optional Optional alls will fall out if a bearing is removed from te rail. Also, remember te bearing may sift and fall out if te rail is tilted witout a stopper. ake appropriate safety measures against falling loads wen mounting te bearing upside down (e.g., wen using te bearing facing downward from a ceiling-mounted rail). nsure 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. unit: mm all lengt ickness of ickness of equipped wit protection NS 1, V two NS 1, 1 cover, V 2 S S S S S

5 Dimensions of A ype ig-accuracy Series ree A ype linear guides are available in te ig-accuracy Series: AN ype, A ype, and M ype, any of wic can be selected for specific applications. ig. 15 A ype M RO M PO 1 8-M ig. 14 AN ype 1 M RO 8-M M PO M YO G 1 n φ D 1 M YO G n ig. 16 M ype M RO M PO 1 8-M (Diameter Q2) M YO 3 2 G n 1 1 able 6 s for AN ype and A ype all dimension eigt idt engt ole position apped ole Grease nipple 2 2 M pitc Mounting ole 1 N dimension asic load rating all diameter eigt olt Maximum Dynamic Static Static moment (N m) all widt eigt pitc olt ole G lengt 1 1 d D 3 (recommended) max C (N) C (N) M RO M PO M YO D (kg) (kg/m) A25AN M M A3AN M M A35AN M M6.75 A35A A45AN M Rc1/8 A45A A55AN M Rc1/8 A55A able 7 s for M ype all dimension eigt idt engt ole position apped ole Drill ole Grease nipple 2 2 M pitc Diameter Q Mounting ole 1 N dimension asic load rating all diameter eigt olt Maximum olt ole Dynamic Static Static moment (N m) all widt eigt pitc G lengt 1 1 d D 3 (recommended) max C (N) C (N) M RO M PO M YO D (kg) (kg/m) A25M M M A3M M M A35M M M A45M M Rc1/ A55M M Rc1/

6 Dimensions of S ype ig-accuracy Series wo S ype linear guides are available in te ig-accuracy Series: A ype and M ype, any of wic can be selected for specific applications. ig. 17 A ype ig. 18 M ype MPO MPO MRO MRO 1 6-M M (Diameter Q2) MYO G 1 n MYO G 1 n able 8 s for A ype all dimension eigt idt engt ole position apped ole Grease nipple 2 2 M pitc Mounting ole 1 N dimension asic load rating all diameter eigt olt Maximum Dynamic Static Static moment (N m) all widt eigt pitc olt ole G lengt 1 1 d D 3 (recommended) max C (N) C (N) M RO M PO M YO D (kg) (kg/m) S15A M φ ( ) (1 7) S2A M M (3 5) S25A M M (3 5) S3A M M (3 5) S35A M M (3 5) able 9 s for M ype all dimension eigt idt engt ole position apped ole Drill ole Grease nipple 2 2 M pitc Diameter Q Mounting ole 1 N ( ) e standard rail mounting bolt ole for S15 is specified as te ole for M3 ( ). Please contact us to request a different ole for M4 ( ). Dimensions in parenteses apply to stainless steel models. dimension asic load rating all diameter eigt olt Maximum Dynamic Static Static moment (N m) all widt eigt pitc olt ole G lengt 1 1 d D 3 (recommended) max C (N) C (N) M RO M PO M YO D (kg) (kg/m) S15M M φ ( ) (1 7) S2M M (M ) M (3 5) S25M M (M ) (12) M (3 5) S3M M (M ) (15) M (3 5) S35M M (M ) (15) M (3 5) ( ) e standard rail mounting bolt ole for S15 is specified as te ole for M3 ( ). Please contact us to request a different ole for M4 ( ). Dimensions in parenteses apply to stainless steel models. 1