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Basic Static Load Rating: If a slide bush is loaded when it is in a stationary condition or working at a low speed, a permanent elastic deformation is formed on the rolling element. The deformation prevents smooth movement of the bushing. To eliminate this possibility, the basic static load rating must not be exceeded. Relation Between Ball Circuits and Load Rating: The load rating of a slide bush varies according to the loaded position on the circumference. The value in the dimensional table indicates the lowest load rating with the load placed on top of one ball circuit. If the slide bush is used with two ball circuits loaded uniformly, the value will be greater. Table C-2 shows the load ratio for the number of ball circuits in each case. Clearance and Fit: An appropriate clearance between the slide bush and shaft is required in TOPBALL operation. Inadequate clearance may cause early failure and/or poor, rough movement. Proper clearance is determined by shaft diameter and housing bore. Table C-3 and C-4 shows NB's recommended tolerances of the shaft and housing bore in order to maintain the appropriate clearance. Table C-3: Recommended Tolerance for Shaft Dia. and Housing Bore part shaft dia. housing bore number dr tol. (h6) D tol. (H7) mm m mm m TK10 TK12 TK16 10 12 16 0 11 19 22 26 21 0 TK20 TK25 TK30 20 25 30 0 13 32 40 47 25 0 TK40 40 0/16 62 30/0 C-6 Table C-2: Optional Load Positions NUMBER OF ROWS Co (LOAD RATING SPECIFIED ON THE TABLE) Comax (MAXIMUM LOAD RATING) LOAD RATIO Comax/Co 4 5 6 Co Co Co Comax Comax Comax 1,414 1,463 1,280 Anti-Corrosive Type: A special TOPBALL is also available for corrosive applications. Specify with a suffix "-SK" for either bushing or slide unit requiring our anti-corrosive type TOPBALL. The load plates are electroless nickel plated and use Stainless Steel ball elements. For "-SK" slide units, all hardware components are of anticorrosive properties. Table C-4: Recommended Tolerance for Shaft Dia. and Housing Bore size TW 3 TW 4 TW 6 TW 8 TW10 TW12 TW16 TW20 TW24 TW32 dr inch .1875 .2500 .3750 .5000 .6250 .7500 1.0000 1.2500 1.5000 2.0000 shaft dia. tol. (g6) inch .0002 .0006 .0002 .0007 .0003 .0008 .0004 .0010 .0004 .0012 housing bore. D inch .3750 .5000 .6250 .8750 1.1250 1.2500 1.5625 2.0000 2.3750 3.0000 tol. (H7) inch .0005 0 .0007 0 .0008 0 .0010 0 .0012 0
Shaft and Housing: To optimize NB TOPBALL performance, high precision shafts and housings are required. 1. Shaft: Dimensional tolerance, surface finish and hardness greatly affect the traveling performance of the TOPBALL. The shaft must be manufactured to the following tolerances. A. A surface finish of 0.4Ra or less. B. Hardness of 60 HRC or more. Hardness less than 60 HRC decreases the life considerably and reduces the permissible load. C. The correct tolerance of the shaft diameter is recommended on Table C-3 and C-4 (Page C-6). The NB Slide Shaft is an ideal component manufactured to these specifications. For details, please refer to Page G-2 to G-21. 2. Housing: There are a wide range of designs and manufacturing techniques for mounted housings. NB pre-engineered slide units are also available. For proper fit refer to Table C-3 and C-4 (Page C-6). Mounting: TOPBALL is designed to be press fitted into the housing bore. When inserting bushing, however, don't apply excess force nor shock load which may cause permanent damage. Examples of Mounting Figures C-5 to C-8 illustrate mounting methods as examples. C-7 Figure C-5 Use of holding plates Figure C-6 Adjustable type housing Figure C-7 Use of external retaining rings Figure C-8 Open type housing 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
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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
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 and 112: ACCURACY The NB ball spline is meas
Page 113 and 114: LIFE CALCULATION Because ball eleme
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: Load coefficient (fw): When calcula
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
Page 165 and 166: TKE-W TYPE Double-Wide Open Block
Page 167 and 168: TKD-W TYPE Clearance Adjustable Do
Page 169 and 170: TWA-W TYPE Double-Wide Block Type
Page 171 and 172: TWJ-W TYPE Clearance Adjustable Do
Page 173 and 174: TWD-W TYPE Double-Wide Open Block
Page 175 and 176: The NB slide bush is a linear motio
Page 177 and 178: Table D-2 Types (2) standard type c
Page 179 and 180: SPECIFICATIONS Dimensional Series:
Page 181 and 182: Examples of Mounting methods are sh
Page 183 and 184: Notes on Installation: When inserti
Page 185 and 186: GM TYPE Single Type part number s
Page 187 and 188: GMF-W TYPE Round Flange Double-Wid
Page 189 and 190: GMK-W TYPE Square Flange Double-Wi
Page 191 and 192: GMT-W TYPE Two Side Cut Double-Wid
Page 193 and 194: GMF-W-E TYPE Round Flange Double-W
Page 195 and 196: GMK-W-E TYPE Square Flange Double-
Page 197 and 198: GMT-W-E TYPE Two Side Cut Double-W
Page 199 and 200: SM TYPE Standard Type This type i
Page 201 and 202: SM-AJ TYPE Clearance-Adjustable Ty
Page 203 and 204: SM-OP TYPE Open Type This type is
Page 205 and 206: 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
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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
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SH TYPE Shaft End Supporter (Cast
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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
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WA TYPE Shaft Support Rail (Inch
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The NB stroke bush is a linear and
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F-4 SR TYPE SR 20 part number struc
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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
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SRE TYPE part number SRE
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SREK TYPE Square Flange type
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F-16 SLIDE ROTARY UNIT SMA-R TYPE B
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F-18 SLIDE ROTARY UNIT AK-R TYPE Co
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SLIDE ROTARY UNIT SMP-R TYPE Pillow
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NB's RK type slide rotary bush is a
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G-1 SLIDE GUIDE BALL SPLINE ROTARY
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SN/SNS/SNT Type (NB Shaft) P.G-6,7,
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The Geometrical moment of inertia (
Page 369 and 370:
SNS TYPE NB Stainless Steel Shaft
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NB CENTER-LINED TAPPED SHAFT G-9 A
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SNWS TYPE NB Inch Stainless Steel
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SNWS-PD NB Inch Pre-Drilled Stainl
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MACHINING EXAMPLE NB can fabricate
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Shaft (spindle) Shaft (Quill) Pleas
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Please send drawing for quotation o
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NBs Slide Way NV and NVT types inco
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Figure H-5, Parallelism m 10 8 6 4
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MOUNTING NV TYPE Accuracy of mounti
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NV TYPE part number structure examp
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NVT TYPE part number structure exam
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The NB slide way is a non-recircula
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Example: Figure H-17 SV Type Slide
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SPECIAL BOLT (BT type) BT type spec
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SV TYPE SV1/SV2 part number struc
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Page 405 and 406:
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
Page 429 and 430:
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
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
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INERTIA Inertia of the slide block
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ACCURACY Table I-7 shows accuracy o
Page 461 and 462:
RATED LIFE To obtain the rated life
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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
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Page 471 and 472:
Page 473 and 474:
BG33 Exposed Bracket R0 34 4 14 1.
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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
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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
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BG20A,B -Without Top-Cover- 8 6 20
Page 493 and 494:
BG26A,B -Without Top-Cover- 10 L1 5
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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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