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Ball Screw Support Unit - Fixed Side, Block Type, with Holes for Dowell Bolts.

Ball Screw Support Unit - Fixed Side, Block Type, with Holes for Dowell Bolts.
  • Volume Discount

Uses the preloaded JIS Class 5 Angular Contact Bearings and is suitable for high-accuracy and high-speed precision applications. Dowel Holes for Locating are added to the bottom surface of the housing.

  • inCAD Components
Support Units - Fixed Side, Square, with Dowel holes:Related Image
・Materials
Type[ M ]Material[ S ]Surface Treatment
①③⑥⑦①③⑥⑦
BSWG1045 Carbon Steel1018 Carbon SteelBlack Oxide
BSWGNElectroless Nickel Plating

Specifications

Part Number
BSWG15
BSWD15
■Component Details
NumberPart NameQuantity
Bearing Housing1
Angular Contact Bearing Class 51 Set
Cover1
Oil Seal2
Hex Socket Head Cap Screw*4
Collar1
Clamping Nut (with Set Piece)1
[ ! ]d=8 comes with one Oil Seal ④.
[ ! ]Do not disassemble ①, ②, ③ and ④, as they must
remain as an assembled unit.
[ ! ]BSWGR bearing is filled with low particle generation grease.
* Screws ⑤ for BSWGR and BSWGN are Stainless Steel Type.
[ ! ]For No.8S and 10S, the I.D. of oil seal is smaller than the previous No.8S and No.10S versions.
Part NumberdLL1L2L3BHhB1H1PYd1d2M (Fine)TOil Seal Applicable Shaft Dia.
TypeNo.
BSWG
BSWGN
8S823-264523217252638206.61111M8x1.01410
811.5
10221024629.5670402236325230914M10x1.01714
10S43253512
1014
122312412333M12x1.01915
12432535
15261525638580462641366036111715M15x1.02220
1528482838
1550*3040
202042105210955856457550M20x1.03025
25254813591410568356625856011--M25x1.53531
[ ! ]Take care in combining No.20 with BSSZ(K)2510, BSSR(K)2510 and BSST2510 Ball Screws. The ball screw nut may come in contact with the bottom surfaces.

More Information

Support Units - Fixed Side, Square, with Dowel holes:Related Image

Technical Information

Combination of Ball Screws and Support Units

It is necessary to verify compatibility when selecting ball screw support units.

When selecting Support Units for Ball Screws, note that it can be combined if dimensions of bearing installation part on Fixed Side of the Ball Screw [Fig. 1] and bearing I.D of the Support Unit [Fig. 2] are the same.

How to Select Support Units Compatible with Ball Screw?

To ensure compatibility of the support unit with ball screw, it is recommended to follow the steps indicated in the table below.(Example: Ball Screw Series BSS1505 and Support Unit BSW12, this same methodology can be used to configure other ball screw series and support units).

  • Step 1 - Confirm that shaft diameter of the Ball Screw (Example: 15 mm).
  • Step 2 - Confirm that dimension of the bearing installation part on fixed side of the Ball Screw (Example: 12mm).
  • Step 3 - Determine that corresponding bearing I.D of the Support Unit (Example No.12).
Ball Screw Part NumberAccuracy class C3BSX0601-BSX0801
BSX0802
BSX1002
-BSX1202
BSX1205
BSX1505---
Accuracy class C5-BSS1002
BSS0802
BSS1202
BSS1004
BSS1205
BSS1204
BSS1210
BSS1010Step 2
BSS15□□
BSS20□□BSS25□□-
Accuracy class C7BSST08022BSSE1002
BSST1004
BSSE0802
BSSE1202
BSSE1004
BSSE1205
BSSE1210
BSST12004
C-BSST1204
-BSSE15□□
BSST15□□
BSSE20□□
BSST20□□
BSSE25□□
BSST25□□
-
Accuracy class C10BSSR08□□
BSSZ08□□
C-BSS0802
BSSR10□□
BSSZ10□□
-BSSR12□□
BSSZ12□□
BSSC1204
BSSR1405
BSSZ1405
BSSR15□□
BSSZ15□□
BSRB15□□
BSSR20□□
BSSZ20□□
BSBR20□□
BSSR25□□
BSSZ25□□
BSBR25□□
BSSR28□□
BSSZ28□□
BSSR32□□
BSSZ32□□
Bearing Installation Part on Ball Screw Fixed SideØ6Ø8Ø10Step 2
Ø12
Ø15Ø20Ø25
Support Units Bearing I.DNo.6No.8SNo.8No.10SNo.1022Step 3
No.12
152No.20*No.25
No.6LNo.10No.15*

* Except C-BSFW15 and 20, C-BUFN15 and 20

Features of Dowel Pins

When mounting support units against pins, care must be taken when tightening the mounting screws so as not to cause backlash between the pins and the support unit. The use of pinned support units reduces assembly time as adjustments are eliminated.

Pressure method against externally placed Dowel Pins.

When tightening the mounting screws, clearance between the pins and the wall may be created.

Re-adjustment is required if this clearance exists.

Use of Dowel Pin hole support units

As the dowel holes are provided with the Support Units, locating is easy.

Lineup of Fixed-side and Support-side Support Units

The Fixed side is the side that secures the ball screw shaft. The fixed side normally stands for the side that the motor is installed.

The Support side merely supports the ball screw shaft, and is not fixed to a ball screw shaft.

ShapeFeautureFixed Side ProductPhotoFixed Side ProductPhotoCustomer Merit
SquareStandardStandardStandardIndustry standard
For use in a limited spaceCompactCompactEasy to use in a limited width space.
Suitable for small devices.
Low ProfileLow ProfileLower profile linear motion units can be made.
Recommended to use it together with Compact Nut.
Small Mounting Hole PitchSmall Mounting Hole PitchEasy to use in a limited width space.
Suitable for small devices.
Reducing Assembly Man-hourStandard Type with Dowel HolesStandard Type with Retaining Ring[BSWG/BSWGN] Easy locating of the housing.
[BTN/BTNM] Easy to assemble while preventing the bearing from falling off.
Standard Type with DamperStandard Type with DamperUnnecessary to design a damper mechanism.
AC Servo Motor Brackets--Ball screws and motors shaft centering are secured by only mounting and aligning a motor with a build-in pilot.
RoundStandardStandardStandardIndustry standard
Reducing Assembly Man-hour--Standard Type with Retaining RingEasy to assemble it while preventing bearings for Support Units from falling off.

Installation process

For information about the installation process of ball screw support units, inspection considerations and precautions, click here.

Precautions on Support Unit Installation

When inserting ball screws into fixed side support units, some cases will be slip-fit and others may be light press-fit cases.

In case of a light-press fit, do not force the bearing onto the screw shaft in a tilted manner, or do not strike the bearing inner ring and support unit housing

If there is any irregularities between the screw shaft and bearing inner ring, do not insert the ball screw forcibly, remove the screw at once and correct the swell on the shaft, then try reassembling.

Compatible Models

Part Number 

CAD Data download and 3D preview are not available because the part number has not yet been determined.

  • *In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
  • Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
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Part Number
BSWG8
BSWG8S
BSWG10
BSWG10S
BSWG12
BSWG15
BSWG20
BSWG25
BSWG1022
BSWG1223
BSWG1526
BSWG1528
BSWGN8
BSWGN8S
BSWGN10
BSWGN10S
BSWGN12
BSWGN15
BSWGN20
BSWGN25
BSWGN1022
BSWGN1223
BSWGN1526
BSWGN1528
Part NumberMinimum order quantityVolume DiscountDays to Ship RoHSShaft Dia. d
(Ø)
Surface Treatment Shaft Height H
(mm)
Thickness L (or F)
(mm)
Width B
(mm)
Basic Load Rating, Dynamic Rating
(N)
Basic Load Rating, Static Rating
(N)
Oil Seal Applicable Shaft Dia.
(φ)
1 Piece(s)Available

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1015Electroless Nickel3025809400630020
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1020Electroless Nickel304295236001680025
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1025Electroless Nickel3548105263002060031
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8 Days or more

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Basic Information

Cost Efficient Standard Type Fixed Side Standard Type with Dowel Holes Shape Square Type
Mounting Method From Top Bearing Type Angular Contact Bearing Bearing Precision Class 5 (ABEC-5)
Material 1045 Carbon Steel Set Fixed Side Only

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Tech Support

Technical Support
Tel:+52-442-672-7661 ext. 2 then wait and dial 4
E-mail: soportetecnico@misumimex.com
Mon. - Fri. 8 a.m. - 6 p.m.