Linear System General Catalog
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LINEAR SYSTEM

CONTENTS NB LINEAR SYSTEM TECHNICAL INFORMATION CONTENTS CONTENTS BALL SPLINE ROTARY BALL SPLINE STROKE BALL SPLINE BALL SCREW SPLINE・・・・・・・・・・・・・・ B-1〜53 TOP BALL ・・・・・・・・・・・・・・・・・・・・・・ D-1〜23 R STROKE BUSH SLIDE ROTARY BUSH・ ・・ E-1〜29 SLIDE SHAFT SPINDLE SHAFT・ ・・・・・・・・・・・・・・・ SLIDE WAY ・SLIDE TABLE MINIATURE SLIDE GONIO WAY・ ・・・・・・・・・・・・G-1〜68 SLIDE SCREW・ ・・・・・・・・・・・ TECHNICAL REFERENCE INDEX

CONTENTS CONTENTS SLIDE GUIDE SEBS-BS/B/BY P.A-26 SEBS-BSM/BM/BYM P.A-26

BALL SCREW SPLINE SSP-AM SLIDE BUSH SSPF SM-AJ KB-AJ SW-AJ SM-OP KB-OP SW-OP STROKE BALL SPLINE ROTARY BALL SPLINE SPR

SMF-W KBF-W SWF-W SMK-W KBK-W SWK-W SMFC KBFC SMKC KBKC

STROKE BUSHSLIDE ROTARY BUSH SR SHAFT SR-BUU

SLIDE WAYSLIDE TABLEMINIATURE SLIDEGONIO WAY NV/NVS SLIDE SCREW

LINEAR SYSTEM LINEAR SYSTEM PROCESS FOR SELECTING NB LINEAR SYSTEM Check the application conditions The NB linear system is a linear motion mechanism which utilizes the rotational motion of ball and/or roller elements. NB offers a wide range of linear motion products of high precision quality that contribute to the size and weight reduction of machinery and equipment. Decide system type ADVANTAGES Low Friction and Excellent Response Despite the compactness of the NB linear system, the system uses relatively large rolling elements on a long raceway resulting in a high load capacity and a...

LINEAR SYSTEM ALLOWABLE LOAD Figure 1-1 Load and Moment A load is applied to the linear system as Figure 1-1 shows. Sometimes moment loads are applied to, for example, slide guides. Load and moment are defined as follows. Basic Static Load Rating (compliant with ISO14728-21) and Allowable Static Moment When excess load or impact load is applied to the linear system while it is stationary or moving slowly, a permanent deformation occurs on the rolling elements and the race way. If this deformation exceeds a certain limit, it causes vibration and noise during operation resulting in a...

LINEAR SYSTEM ・ 3 10 Lh 2・ L ・n1・60 …………………… 9 ℓS L h: life time hr ℓ : stroke length S m　 cpm n1: number of cycles per minute In the linear system, the guide rail or shaft works as race way of the rolling elements. Therefore, the hardness of the rail or shaft is an important factor in determining the rated load. The rated load decreases as the hardness decrease below 58HRC. NB products hold appropriate hardness by advanced heat treatment technology. In case of using the rail or shaft of insufficient hardness, please take the hardness coefficient (Figure 1-2) into the life calculation...

LINEAR SYSTEM Calculation of Applied Load 2 Table 1-5 Applied Load Calculation (2) applied load calculation formula 2 horizontal, side axes Table 1-6 shows the formulas for determining the applied load when moment is applied to the linear system. W: applied load (N) P: load applied to the linear system (N) ℓ: distance to applied load or to working center of gravity (mm) Table 1-6 Applied Load Calculation 3 condition applied load calculation formula 1 horizontal axis, 1 bearing Ep1: Mp equivalent coefficient with 1 bearing used Er: Mr equivalent coefficient Ey1: My equivalent coefficient...

LINEAR SYSTEM Table 1-7 Slide Guide SEB type Table 1-8 Slide Guide SEB and SER type part number SEBS 7BY SEBS 9BS SEBS 9B part number Ep1: Mp equivalent coefficient with 1 block used　Ep2: Mp equivalent coefficient with 2 blocks used in close contact Ey1: My equivalent coefficient with 1 block used　Ey 2: My equivalent coefficient with 2 blocks used in close contact Er: Mr equivalent coefficient Ep1: Mp equivalent coefficient with 1 block used　Ep2: Mp equivalent coefficient with 2 blocks used in close contact Ey1: My equivalent coefficient with 1 block used　Ey 2: My equivalent coefficient...

LINEAR SYSTEM Table 1-9 Slide Guide SGL, SGW type Table 1-10 Ball Spline・Rotary Ball Spline unit1/mm equivalent coefficient part number E1 E2 part number Table 1-11 Slide Bush SM type unit1/mm equivalent coefficient part number E1 E2 E1: equivalent coefficient with 1 bush used E 2 : equivalent coefficient with 2 bushes used in close contact Table 1-12 Slide Bush SM-G-L type unit1/mm equivalent coefficient part number E1 E2 Ep1: Mp equivalent coefficient with 1 block used　Ep2: Mp equivalent coefficient with 2 blocks used in close contact Ey1: My equivalent coefficient with 1 block used　Ey 2:...

LINEAR SYSTEM Table 1-13 Slide Bush SM-W type unit1/mm equivalent coefficient part number E1 E2 3W E1: equivalent coefficient with 1 bush used E 2 : equivalent coefficient with 2 bushes used in close contact unit1/mm Table 1-16 TOPBALL TK type equivalent coefficient part number E1 E2 TK10 TK12 TK16 TK20 E1: equivalent coefficient with 1 bush used E1: equivalent coefficient with 1 bush used E 2 : equivalent coefficient with 2 bushes used in close contact E1: equivalent coefficient with 1 bush used E 2: equivalent coefficient with 2 bushes used in close contact Table 1-18 Slide Bush SW type...

LINEAR SYSTEM Table 1-21 Slide Table NVT type unit1/mm equivalent coefficient part number Ep Ey Er NVT2035 Table 1-22 Slide Table SVT type 1 unit1/mm equivalent coefficient part number Ep Ey Er Ep: Mp equivalent coefficient　Ey: My equivalent coefficient Er: Mr equivalent coefficient Table 1-25 Miniature Slide SYBS type unit1/mm equivalent coefficient part number Ep Ey Er Table 1-24 Slide Table SYT type unit1/mm equivalent coefficient part number Ep Ey Er Table 1-23 Slide Table SVT type 2 unit1/mm equivalent coefficient part number Ep Ey Er Ep: Mp equivalent coefficient　Ey: My equivalent...

LINEAR SYSTEM RATED LIFE CALCULATION EXAMPLE 1 Average Applied Load 2 Horizontal Axes, 2 Blocks each, Considering Acceleration/Deceleration The load applied to a linear system generally varies with the travel distance depending on how the system is operated. This includes the start/stop processes of the reciprocating motion and work on the system. The average applied load is used to compute the life corresponding to the actual application conditions. ①When the load varies in a step manner with the travel distance (Figure 1-7). 　　ℓ1 is the travel distance under load P1 　　ℓ2 is the travel...