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RATED LIFE AND LOADS The rated life and loads are defined as follows. Rated Life When a group of slide rotary bearings of the same type are used under the same conditions, the rated life is defined as the total number of rotations made without flaking by 90% of the bearings. Basic Dynamic Rated Load The basic dynamic rated load is defined as the load with a constant magnitude and direction at which a rated life of 10 6 rotations can be achieved. Basic Static Rated Load The basic static rated load is defined as the load with a constant direction that would result in a certain contact stress at the mid-point of the rolling element and tracking surface that are experiencing the maximum stress. Formula 1 gives the relation between the applied load and the rated life of the slide rotary bush. Conditions Motions : Linear and rotational, combined Load, P : 30 N Stroke, S : 200 mm Number of rotations per minute (rpm), n=15 F-9 L : rated life (10 6 rotations)fH : hardness coefficient fT : temperature coefficientfC : contact coefficient fW : load coefficientC : basic dynamic rated load (N) P : applied load (N) Since the slide rotary bush is used in applications with combined linear and rotary motions, the life time is obtained using Formulas and . When linear and rotary motions are combined When only linear motion is involved Lh= 10 6 L 600 S n1 dm Lh : life (hours)S : stroke (mm)n : number of rotations per minute (rpm)n1 : number of strokes per minute (cpm) dm : ball pitch diameter (mm) = approx. 1.15 dr (dr is the inner contact diameter of the SRE-type bush) Calculation Example The life of an SRE20-type NB slide rotary bush is calculated below based on the following operating conditions. Calculation: Basic rated load, C=647 N Based on the above operating conditions, the life is calculated using the following coefficient values. Hardness coefficient, fH=1 Temperature coefficient, fT=1 Contact coefficient, fC=1 Load coefficient, fW=1.5 Rated life = = 2,972 (10 6 3 fH fT fC C L= fW P 3 1 1 1 647 rotations) 1.5 30 L= fH fT fC fW Number of strokes per minute (cpm), n1=10 Shaft surface hardness : greater than 58 HRC Operating temperature : room temperature Other : single shaft with single bush Life (in time) C P 3 SLIDE GUIDE BALL SPLINE ROTARY BALL SPLINE STROKE BALL SPLINE TOPBALL PRODUCTS SLIDE BUSH SLIDE UNIT STROKE BUSH SLIDE ROTARY BUSH SLIDE SHAFT SLIDE WAY/GONIO WAY SLIDE TABLE MINIATURE SLIDE ACTUATOR SLIDE SCREW
Application Examples Application Example 1 Vertical Shaft Robot Arm Application Example 2 Multiple Gearing Idler Application Example 4 Turntable Slide Rotary Bush SRE type Rotary Ball Spline SPR type Application Example 3 Tool Changer Slide Rotary Unit SMP-R type F-10 Slide Rotary Flange Bush SREK type Slide Rotary Unit SMA-R type
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NB Products are available from MARY
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Eng- 112 Tech- 17 INDEX- 18
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SLIDE GUIDE SEBS-B/BY P.A-26 SEBS-B
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BALL SPLINE SSP/SSPS P.B-16 SSPM P.
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SLIDE BUSH GM P.D- 12 GW P.D-120 SM
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SLIDE BUSH (Flange Type) SMFC P.D-
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SLIDE UNIT SWA P.E-38 SWJ P.E-40 SW
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SLIDE SHAFT SN P.G-6 SNS P.G-7 SNT
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INDEX AK Slide Unit : Compact Block
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SA Slide Unit : Shaft Support Rail
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SMS-G Slide Bush : Standard Type, A
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SW Slide Bush (Inch Standard) : Sta
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A-1 SLIDE GUIDE BALL SPLINE ROTARY
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Table A-1 Types miniature type high
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RIGIDITY AND PRE-LOAD The rolling e
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MOUNTING A-7 Slide guides have a h
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A-9 Mounting: In general, a slide
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When reference surface is not provi
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Figure A-23 Examples of Joined Guid
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Bellows Option (Series: GL or SGL)
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A-17 Calulcation method of length
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Simplified lubrication management A
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A-21 The SEB(S) type slide guides
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RATED LOAD The load rating for SEB(
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MOUNTING BOLTS Extremely small cust
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H b MR 0 -0.1 B P1 W 0 -0.05 C 4-S
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H b W MR 0 -0.1 Refer to page A-2
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H 1 H1 mm 2 2.6 4 4.7 5.5 7.5 9.5 1
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H 1 A-33 L2(with side-seal) L1(with
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TYPES SER-type slide guides are ava
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Figure A-48 Shoulder Shape-2 r1 r1
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Refer to page A-35 for a descriptio
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Refer to page A-35 for a descriptio
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BLOCK TYPES A-43 Six different typ
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Clean Operation A-45 Ball cushions
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MOUNTING A-47 As shown in Figure A
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H 1 T1 mm 5 6 6.5 9 8.5 1,240 1,36
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H 1 1 Refer to page A-43 for a desc
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H 1 T1 mm 9 8 13.5 12 15.5 20 1,24
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T1 mm 5 6 6.5 9 H 1 8.5 1,240 1,360
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T1 mm 5 6 6.5 9 8.5 H 1 1,240 1,360
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H 1 T1 mm 5 8 9.5 9 8.5 10 T greas
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BLOCK TYPES A-61 Six different typ
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MOUNTING Slide guides are generally
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H 1 1 Refer to page A-61 for a desc
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H 1 H1 mm 13.5 16 20 24 27.5 1,120
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H 1 H1 mm 13.5 16 20 24 27.5 36.5
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H 1 H1 mm 13.5 16 20 24 27.5 1,120
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H 1 H1 mm 13.5 16 20 24 27.5 1,120
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H 1 H1 mm 13.5 16 20 24 27.5 36.5
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ACCURACY A-77 Three accuracy grade
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GREASE FITTING A-79 A grease fitti
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6-S, D drill Refer to page A-77 fo
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The NB ball spline consists of a sp
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Table B-2 Types of Spline Nut type
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ACCURACY The NB ball spline is meas
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LIFE CALCULATION Because ball eleme
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Fit: A transition fit between an SS
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Mounting of SSPM Type Spline: Examp
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Mounting of SSPF Type Spline: Examp
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SSP TYPE Cylindrical Spline Nut p
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SSPM TYPE Keyless Spline Nut part
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SSPF TYPE Flange Type Nut part nu
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SSPT TYPE Two Side Cut Flange Type
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SPA TYPE Keyless Block Type part
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SPA-W TYPE Keyless Block Double Ty
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SSPB TYPE Block Type part number
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STANDARD BALL SPLINE part number st
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The NB rotary ball spline can be us
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PRE-LOAD AND CLEARANCE IN ROTATIONA
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OPERATING ENVIRONMENT Certain opera
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SPR TYPE part number structure exam
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The NB stroke ball spine SPLFS type
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PRE-LOAD AND CLEARANCE IN ROTATIONA
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SPLFS TYPE - Two Side Cut Flange Ty
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C-1 SLIDE GUIDE BALL SPLINE ROTARY
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TOPBALL TOPBALL unit closed type op
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Load coefficient (fw): When calcula
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Shaft and Housing: To optimize NB T
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mm 22.0 22.9 24.9 31.5 44.1 52.1 60
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120 inch .515 .703 1.032 1.112 1.2
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TKA-W TYPE Double-Wide Block Type
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TKE-W TYPE Double-Wide Open Block
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TKD-W TYPE Clearance Adjustable Do
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TWA-W TYPE Double-Wide Block Type
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TWJ-W TYPE Clearance Adjustable Do
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TWD-W TYPE Double-Wide Open Block
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The NB slide bush is a linear motio
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Table D-2 Types (2) standard type c
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SPECIFICATIONS Dimensional Series:
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Examples of Mounting methods are sh
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Notes on Installation: When inserti
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GM TYPE Single Type part number s
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GMF-W TYPE Round Flange Double-Wid
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GMK-W TYPE Square Flange Double-Wi
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GMT-W TYPE Two Side Cut Double-Wid
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GMF-W-E TYPE Round Flange Double-W
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GMK-W-E TYPE Square Flange Double-
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GMT-W-E TYPE Two Side Cut Double-W
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SM TYPE Standard Type This type i
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SM-AJ TYPE Clearance-Adjustable Ty
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SM-OP TYPE Open Type This type is
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SM-W TYPE Double-Wide Type This t
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SMF TYPE Round Flange Type This t
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SMK TYPE Square Flange Type This
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SMT TYPE Two Side Cut Flange Type
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SMF-E TYPE Round Flange Type with
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SMK-E TYPE Square Flange Type with
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SMT-E TYPE Two Side Cut Pilot End
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SMF-W TYPE Round Flange Double-Wid
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SMK-W TYPE Square Flange Double-Wi
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SMT-W TYPE Two Side Cut Double-Wid
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SMFC TYPE Center Mount Round Flang
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SMKC TYPE Center Mount Square Flan
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SMTC TYPE Two Side Cut Center Flan
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SMF-W-E TYPE Round Flange Double-W
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SMK-W-E TYPE Square Flange Double-
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SMT-W-E TYPE Two Side Cut Double-W
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TRF TYPE Triple-Wide Round Flange
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TRK TYPE Triple-Wide Square Flange
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TRFC TYPE Triple-Wide Intermediate
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TRKC TYPE Triple-Wide Intermediate
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TRF-E TYPE Triple-Wide Round Flang
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TRK-E TYPE Triple-Wide Square Flan
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KB TYPE Standard Type This type i
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KB-AJ TYPE Clearance Adjustable Ty
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KB-OP TYPE Open Type This type is
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KB-W TYPE Double-Wide Type This t
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KBF TYPE Round Flange Type This t
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KBK TYPE Square Flange Type This
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KBT TYPE Two Side Cut Flange Type
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KBF-W TYPE Round Flange Double-Wid
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KBK-W TYPE Square Flange Double-Wi
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KBFC TYPE Center Mount Round Flang
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KBKC TYPE Center Mount Square Flan
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SW TYPE Standard Type This type i
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SW-AJ TYPE Clearance Adjustable Ty
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SW-OP TYPE Open Type This type is
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SW-W TYPE Double-Wide Type This t
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SWF TYPE Round Flange Type This t
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SWK TYPE Square Flange Type This
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SWT TYPE Two Side Cut Flange Type
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SWF-W TYPE Round Flange Double-Wid
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SWK-W TYPE Square Flange Double-Wi
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SWFC TYPE Center Mount Round Flang
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SWKC TYPE Center Mount Square Flan
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GW TYPE Single Type part number s
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Table E-1 types A wide variety of
Page 297 and 298: Table E-3 metric series types shaht
Page 299 and 300: ACCURACY The accuracy of the SA typ
Page 301 and 302: SMA TYPE Block Type part number s
Page 303 and 304: SMA-W TYPE Double-Wide Block Type
Page 305 and 306: AK TYPE Compact Block Type part nu
Page 307 and 308: AK-W TYPE Double-Wide Compact Block
Page 309 and 310: SMB TYPE Block Type part number st
Page 311 and 312: SMP TYPE Pillow Block Type part n
Page 313 and 314: SMJ TYPE Clearance Adjustable Type
Page 315 and 316: SME TYPE Open Block Type part numb
Page 317 and 318: SME-W TYPE Double-wide Open Block T
Page 319 and 320: SMD TYPE Open Block with Clearance
Page 321 and 322: RB TYPE Resin Block Type part numb
Page 323 and 324: SH TYPE Shaft End Supporter (Cast
Page 325 and 326: E-32 part number structure example
Page 327 and 328: CE TYPE Non-Clearance Adjustable T
Page 329 and 330: CD TYPE Clearance Adjustable Type
Page 331 and 332: SWA TYPE Block Type (Inch Series)
Page 333 and 334: SWJ TYPE Clearance Adjustable Bloc
Page 335 and 336: SWD TYPE Open Block Type (Inch Se
Page 337 and 338: RBW TYPE Resin Block Type (Inch S
Page 339 and 340: WA TYPE Shaft Support Rail (Inch
Page 341 and 342: The NB stroke bush is a linear and
Page 343 and 344: F-4 SR TYPE SR 20 part number struc
Page 345 and 346: F-6 SR-B TYPE SR 20 part number str
Page 347: NB's Slide Rotary Series consists o
Page 351 and 352: SRE TYPE part number SRE
Page 353 and 354: SREK TYPE Square Flange type
Page 355 and 356: F-16 SLIDE ROTARY UNIT SMA-R TYPE B
Page 357 and 358: F-18 SLIDE ROTARY UNIT AK-R TYPE Co
Page 359 and 360: SLIDE ROTARY UNIT SMP-R TYPE Pillow
Page 361 and 362: NB's RK type slide rotary bush is a
Page 363 and 364: G-1 SLIDE GUIDE BALL SPLINE ROTARY
Page 365 and 366: SN/SNS/SNT Type (NB Shaft) P.G-6,7,
Page 367 and 368: The Geometrical moment of inertia (
Page 369 and 370: SNS TYPE NB Stainless Steel Shaft
Page 371 and 372: NB CENTER-LINED TAPPED SHAFT G-9 A
Page 373 and 374: SNWS TYPE NB Inch Stainless Steel
Page 375 and 376: SNWS-PD NB Inch Pre-Drilled Stainl
Page 377 and 378: MACHINING EXAMPLE NB can fabricate
Page 379 and 380: Shaft (spindle) Shaft (Quill) Pleas
Page 381 and 382: Please send drawing for quotation o
Page 383 and 384: NBs Slide Way NV and NVT types inco
Page 385 and 386: Figure H-5, Parallelism m 10 8 6 4
Page 387 and 388: MOUNTING NV TYPE Accuracy of mounti
Page 389 and 390: NV TYPE part number structure examp
Page 391 and 392: NVT TYPE part number structure exam
Page 393 and 394: The NB slide way is a non-recircula
Page 395 and 396: Example: Figure H-17 SV Type Slide
Page 397 and 398: SPECIAL BOLT (BT type) BT type spec
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SV TYPE SV1/SV2 part number struc
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SV TYPE SV12 part number structur
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SVW TYPE part number structure exam
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STROKE AND RATED LOAD When the stro
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The NB slide table is a precision t
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RATED LIFE The life of an NB slide
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H-34 SVT TYPE SVT1/SVT2 part numb
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SYT TYPE SYT1/SYT2 part number st
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SYT TYPE SYT3 part number structu
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SYT-D TYPE SYT1/SYT2 part number
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SYT-D TYPE SYT3 part number struc
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The NB miniature slide table SYBS t
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Mounting Shape of Mounting Surface
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SYBS TYPE part number structure exa
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Nippon Bearing's Gonio Way family h
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INSTALLATION Figure H-38. Installat
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2-AXES AND CUSTOM SPECIFICATIONS Wh
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RVF TYPE SVT6/SVT9 Part number co
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Suitable for Minute Motion: The fri
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MOUNTING Figure H-44 Example of Mou
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RV TYPE Gonio Way part number str
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CR TYPE (Standard Curved Roller Cag
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NB's BG type is a compact single ax
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PART NUMBER SYSTEM Part number for
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ALLOWABLE SPEED Allowable speed of
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INERTIA Inertia of the slide block
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ACCURACY Table I-7 shows accuracy o
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RATED LIFE To obtain the rated life
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A.1.c. PT for Vertical Move ) durin
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LUBRICATION BG type contains a lith
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BG20 Figures inside( ) indicates ma
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BG33 Exposed Bracket R0 34 4 14 1.
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RETURN PULLEY UNIT Return pulley un
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BG20 SENSOR Photo-sensor or proximi
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BG33 S Specification (Slim-Type Pho
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BG33 K Specification (Proximity Sen
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BG46 H Specification (Close Contact
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BG55 S Specification (Compact Photo
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POSITIONING PIN HOLE For the BG typ
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BG46A,B For the two-block type, the
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BG20A,B -Without Top-Cover- 8 6 20
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BG26A,B -Without Top-Cover- 10 L1 5
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BG33C,D -Without Top-Cover- 8 6 33
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BG46C,D -Without Top-Cover- 13 9 73
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J-1 SLIDE GUIDE BALL SPLINE ROTARY
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SELECTION METHOD Required Thrust: T
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Sample Calculation: 1. Selecting a
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SS TYPE part number structure examp
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DEFINITIONS AND INDICATIONS OF GEOM
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SQUARENESS Squareness assumes a com
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shaft dimensional tolerance diamete
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NB Products are available from MARY
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