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total length of spline shaft (mm) greater than 200 315 400 500 630 800 1,000 1,250 1,600 or less 200 315 400 500 630 800 1,000 1,250 1,600 2,000 highgrade 46 89 126 163 SSP4 SSP6 SSP8 precision grade 26 57 82 108 SSP10 highgrade 36 54 68 82 102 precision grade 20 32 41 51 65 SSP13A SSP16A highgrade 34 45 53 62 75 92 115 153 195 precision grade 18 25 31 38 46 58 75 97 127 part number SSP20A SSP20 SSP25A SSP25 SSP30 highgrade 32 39 44 50 57 68 83 102 130 171 B-7 SSP40 SSP50 Table B-6 Radial Run-Out of Outer Surface of Spline Nut Relative to Spline Shaft Support Area (Max.) unit/m SSP60 SSP80 SSP80L SSP100 SSP100L Both the clearance and pre-load are expressed in terms of clearance in the rotational direction. The pre-load is categorized into three different levels : standard, light (T1), and medium (T2). A pre-load cannot be specified when using the commercial grade spline shaft. Table B-7 Pre-Load and Clearance in Rotational Directionunit/m Table B-8 Operating Condition and Pre-Load part number SSP4 standard light (T1) medium (T2) pre-load pre-load symbol operating condition SSP6 SSP8 21 62 Minute vibration is applied. A precise SSP 10 standard motion is required. A torque in a given SSP 13A SSP 16A 31 93 137 direction is applied. SSP 20A SSP 20 light T1 Slight vibration is applied. Slight torsional load is applied. Cyclic torque is applied SSP 25A 42 124 2012 SSP 25 SSP 30 SSP 40 medium T2 Shock/vibration is applied. Over-hang load is applied. Torsional load is applied. SSP 50 SSP 60 SSP 80(L) 63 186 3018 SSP100(L) 84 248 4024 precision grade 18 21 25 29 34 42 52 65 85 116 highgrade 32 39 44 50 57 68 83 102 130 171 precision grade 18 21 25 29 34 42 52 65 85 116 highgrade 32 36 39 43 47 54 63 76 93 118 precision grade 16 19 21 24 27 32 38 47 59 77 highgrade 30 34 36 38 41 45 51 59 70 86 precision grade SSP4 maximum fabrication length: 300mm; SSP6 maximum fabrication length: 400mm; SSP13A, 16A maximum fabrication length: 1500mm For lengths exceeding 2000mm, contact NB. PRE-LOAD AND CLEARANCE IN ROTATIONAL DIRECTION 16 17 19 21 23 26 30 35 43 54 highgrade 30 32 34 35 37 40 43 48 55 65 precision grade 16 17 17 19 20 22 24 28 33 40 SLIDE GUIDE BALL SPLINE ROTARY BALL SPLINE STROKE BALL SPLINE TOPBALL PRODUCTS SLIDE BUSH SLIDE UNIT STROKE BUSH SLIDEROTARYBUSH SLIDE SHAFT SLIDE WAY/GONIO WAY SLIDE TABLE MINIATURE SLIDE ACTUATOR SLIDE SCREW
LIFE CALCULATION Because ball elements are used as the rolling elements in ball splines, the following equations are used to calculate the life of ball spline systems. For radial load 3 L= 50 fc C fw P For torsional load 3 L= 50 fc CT fw T The performance of a ball spline system is affected by the operating condition and environment of the application. The operating conditions should therefore be carefully taken into consideration. Dust Prevention: The invasion of foreign particles and dust may affect the motion characteristics and shorten the life of a ball spline. Seals will perform well under normal operating conditions. However, they may not prevent the entry of foreign particles in a hostile environment. When used in such an environment, the ball spline should be protected using bellows and protective covers. Operating Temperature: The ball retainers used in ball spline nuts are made of resin, so the operating temperature should never exceed 80 o C. B-8 Figure B-3 Radial Loading and Torque Loading radial load torque load L : travel life (km) moment fc : contact coefficient fw: Load coefficient C : basic dynamic load rating(N) P : load(N) CT : basic dynamic torque rating(N-m) T : torque(N-m) * Refer to page Eng-5 for coefficients ** The rated load for the commercial spline shaft is approximately 70% of the standard ball spline shaft. OPERATING ENVIRONMENT Figure B-4 Examples of Dust Prevention Methods bellows cover Excessive Moment: The allowable load for ball splines is high, and they can also sustain high moment load. However, when the load becomes excessive, the load applied to the raceway grooves becomes unbalanced and stable motion may not be achieved. When accuracy is required, the application of excessive moment should be prevented by using two or more spline nuts.
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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
Page 61 and 62: Figure A-48 Shoulder Shape-2 r1 r1
Page 63 and 64: Refer to page A-35 for a descriptio
Page 65 and 66: Refer to page A-35 for a descriptio
Page 67 and 68: BLOCK TYPES A-43 Six different typ
Page 69 and 70: Clean Operation A-45 Ball cushions
Page 71 and 72: MOUNTING A-47 As shown in Figure A
Page 73 and 74: H 1 T1 mm 5 6 6.5 9 8.5 1,240 1,36
Page 75 and 76: H 1 1 Refer to page A-43 for a desc
Page 77 and 78: H 1 T1 mm 9 8 13.5 12 15.5 20 1,24
Page 79 and 80: T1 mm 5 6 6.5 9 H 1 8.5 1,240 1,360
Page 81 and 82: T1 mm 5 6 6.5 9 8.5 H 1 1,240 1,360
Page 83 and 84: H 1 T1 mm 5 8 9.5 9 8.5 10 T greas
Page 85 and 86: BLOCK TYPES A-61 Six different typ
Page 87 and 88: MOUNTING Slide guides are generally
Page 89 and 90: H 1 1 Refer to page A-61 for a desc
Page 91 and 92: H 1 H1 mm 13.5 16 20 24 27.5 1,120
Page 93 and 94: H 1 H1 mm 13.5 16 20 24 27.5 36.5
Page 95 and 96: H 1 H1 mm 13.5 16 20 24 27.5 1,120
Page 97 and 98: H 1 H1 mm 13.5 16 20 24 27.5 1,120
Page 99 and 100: H 1 H1 mm 13.5 16 20 24 27.5 36.5
Page 101 and 102: ACCURACY A-77 Three accuracy grade
Page 103 and 104: GREASE FITTING A-79 A grease fitti
Page 105 and 106: 6-S, D drill Refer to page A-77 fo
Page 107 and 108: The NB ball spline consists of a sp
Page 109 and 110: Table B-2 Types of Spline Nut type
Page 111: ACCURACY The NB ball spline is meas
Page 115 and 116: Fit: A transition fit between an SS
Page 117 and 118: Mounting of SSPM Type Spline: Examp
Page 119 and 120: Mounting of SSPF Type Spline: Examp
Page 121 and 122: SSP TYPE Cylindrical Spline Nut p
Page 123 and 124: SSPM TYPE Keyless Spline Nut part
Page 125 and 126: SSPF TYPE Flange Type Nut part nu
Page 127 and 128: SSPT TYPE Two Side Cut Flange Type
Page 129 and 130: SPA TYPE Keyless Block Type part
Page 131 and 132: SPA-W TYPE Keyless Block Double Ty
Page 133 and 134: SSPB TYPE Block Type part number
Page 135 and 136: STANDARD BALL SPLINE part number st
Page 137 and 138: The NB rotary ball spline can be us
Page 139 and 140: PRE-LOAD AND CLEARANCE IN ROTATIONA
Page 141 and 142: OPERATING ENVIRONMENT Certain opera
Page 143 and 144: SPR TYPE part number structure exam
Page 145 and 146: The NB stroke ball spine SPLFS type
Page 147 and 148: PRE-LOAD AND CLEARANCE IN ROTATIONA
Page 149 and 150: SPLFS TYPE - Two Side Cut Flange Ty
Page 151 and 152: C-1 SLIDE GUIDE BALL SPLINE ROTARY
Page 153 and 154: TOPBALL TOPBALL unit closed type op
Page 155 and 156: Load coefficient (fw): When calcula
Page 157 and 158: Shaft and Housing: To optimize NB T
Page 159 and 160: mm 22.0 22.9 24.9 31.5 44.1 52.1 60
Page 161 and 162: 120 inch .515 .703 1.032 1.112 1.2
Page 163 and 164:
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
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Table E-3 metric series types shaht
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ACCURACY The accuracy of the SA typ
Page 301 and 302:
SMA TYPE Block Type part number s
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SMA-W TYPE Double-Wide Block Type
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AK TYPE Compact Block Type part nu
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AK-W TYPE Double-Wide Compact Block
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SMB TYPE Block Type part number st
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SMP TYPE Pillow Block Type part n
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SMJ TYPE Clearance Adjustable Type
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SME TYPE Open Block Type part numb
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SME-W TYPE Double-wide Open Block T
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SMD TYPE Open Block with Clearance
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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
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CE TYPE Non-Clearance Adjustable T
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CD TYPE Clearance Adjustable Type
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SWA TYPE Block Type (Inch Series)
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SWJ TYPE Clearance Adjustable Bloc
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SWD TYPE Open Block Type (Inch Se
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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
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NB's Slide Rotary Series consists o
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Application Examples Application Ex
Page 351 and 352:
SRE TYPE part number SRE
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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
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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
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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
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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
Page 401 and 402:
Page 403 and 404:
Page 405 and 406:
SV TYPE SV12 part number structur
Page 407 and 408:
SVW TYPE part number structure exam
Page 409 and 410:
STROKE AND RATED LOAD When the stro
Page 411 and 412:
The NB slide table is a precision t
Page 413 and 414:
RATED LIFE The life of an NB slide
Page 415 and 416:
H-34 SVT TYPE SVT1/SVT2 part numb
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Page 419 and 420:
Page 421 and 422:
SYT TYPE SYT1/SYT2 part number st
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SYT TYPE SYT3 part number structu
Page 425 and 426:
SYT-D TYPE SYT1/SYT2 part number
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SYT-D TYPE SYT3 part number struc
Page 429 and 430:
The NB miniature slide table SYBS t
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Mounting Shape of Mounting Surface
Page 433 and 434:
SYBS TYPE part number structure exa
Page 435 and 436:
Nippon Bearing's Gonio Way family h
Page 437 and 438:
INSTALLATION Figure H-38. Installat
Page 439 and 440:
2-AXES AND CUSTOM SPECIFICATIONS Wh
Page 441 and 442:
RVF TYPE SVT6/SVT9 Part number co
Page 443 and 444:
Suitable for Minute Motion: The fri
Page 445 and 446:
MOUNTING Figure H-44 Example of Mou
Page 447 and 448:
RV TYPE Gonio Way part number str
Page 449 and 450:
CR TYPE (Standard Curved Roller Cag
Page 451 and 452:
NB's BG type is a compact single ax
Page 453 and 454:
PART NUMBER SYSTEM Part number for
Page 455 and 456:
ALLOWABLE SPEED Allowable speed of
Page 457 and 458:
INERTIA Inertia of the slide block
Page 459 and 460:
ACCURACY Table I-7 shows accuracy o
Page 461 and 462:
RATED LIFE To obtain the rated life
Page 463 and 464:
A.1.c. PT for Vertical Move ) durin
Page 465 and 466:
LUBRICATION BG type contains a lith
Page 467 and 468:
BG20 Figures inside( ) indicates ma
Page 469 and 470:
Page 471 and 472:
Page 473 and 474:
BG33 Exposed Bracket R0 34 4 14 1.
Page 475 and 476:
RETURN PULLEY UNIT Return pulley un
Page 477 and 478:
BG20 SENSOR Photo-sensor or proximi
Page 479 and 480:
BG33 S Specification (Slim-Type Pho
Page 481 and 482:
BG33 K Specification (Proximity Sen
Page 483 and 484:
BG46 H Specification (Close Contact
Page 485 and 486:
BG55 S Specification (Compact Photo
Page 487 and 488:
POSITIONING PIN HOLE For the BG typ
Page 489 and 490:
BG46A,B For the two-block type, the
Page 491 and 492:
BG20A,B -Without Top-Cover- 8 6 20
Page 493 and 494:
BG26A,B -Without Top-Cover- 10 L1 5
Page 495 and 496:
Page 497 and 498:
BG33C,D -Without Top-Cover- 8 6 33
Page 499 and 500:
Page 501 and 502:
BG46C,D -Without Top-Cover- 13 9 73
Page 503 and 504:
Page 505 and 506:
J-1 SLIDE GUIDE BALL SPLINE ROTARY
Page 507 and 508:
SELECTION METHOD Required Thrust: T
Page 509 and 510:
Sample Calculation: 1. Selecting a
Page 511 and 512:
SS TYPE part number structure examp
Page 513 and 514:
DEFINITIONS AND INDICATIONS OF GEOM
Page 515 and 516:
SQUARENESS Squareness assumes a com
Page 517 and 518:
shaft dimensional tolerance diamete
Page 519:
NB Products are available from MARY
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