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

Volume Discount

MISUMI

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.

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

・Materials

Type	[ M ]Material		[ S ]Surface Treatment
	①③	⑥⑦	①③⑥⑦
BSWG	1045 Carbon Steel	1018 Carbon Steel	Black Oxide
BSWGN			Electroless Nickel Plating

Specifications

Part Number

BSWG15
BSWD15

■Component Details

Number	Part Name	Quantity
①	Bearing Housing	1
②	Angular Contact Bearing Class 5	1 Set
③	Cover	1
④	Oil Seal	2
⑤	Hex Socket Head Cap Screw*	4
⑥	Collar	1
⑦	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 Number		d	L	L₁	L₂	L₃	B	H	h	B₁	H₁	P	Y	d₁	d₂	ℓ	M (Fine)	T	Oil Seal Applicable Shaft Dia.
Type	No.
BSWG BSWGN	8S	8	23	-	26	4	52	32	17	25	26	38	20	6.6	11	11	M8x1.0	14	10
	8																		11.5
	1022	10	24	6	29.5	6	70	40	22	36	32	52	30	9	14		M10x1.0	17	14
	10S							43	25		35								12
	10																		14
	1223	12						41	23		33						M12x1.0	19	15
	12							43	25		35
	1526	15	25	6	38	5	80	46	26	41	36	60	36	11	17	15	M15x1.0	22	20
	1528							48	28		38
	15							50	*30		40
	20	20	42	10	52	10	95	58		56	45	75	50				M20x1.0	30	25
	25	25	48	13	59	14	105	68	35	66	25	85	60	11	-	-	M25x1.5	35	31

[ ! ]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

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 Number	Accuracy class C3	BSX0601	-	BSX0801 BSX0802 BSX1002	-	BSX1202 BSX1205	BSX1505	-	-	-
	Accuracy class C5	-	BSS1002	BSS0802 BSS1202	BSS1004 BSS1205 BSS1204 BSS1210	BSS1010	Step 2 BSS15□□	BSS20□□	BSS25□□	-
	Accuracy class C7	BSST08022	BSSE1002 BSST1004	BSSE0802 BSSE1202	BSSE1004 BSSE1205 BSSE1210 BSST12004 C-BSST1204	-	BSSE15□□ BSST15□□	BSSE20□□ BSST20□□	BSSE25□□ BSST25□□	-
	Accuracy class C10	BSSR08□□ 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 Side		Ø6	Ø8		Ø10		Step 2 Ø12	Ø15	Ø20	Ø25
Support Units Bearing I.D		No.6	No.8S	No.8	No.10S	No.1022	Step 3 No.12	152	No.20*	No.25
Support Units Bearing I.D		No.6L	No.8S	No.8	No.10S	No.10	Step 3 No.12	No.15*	No.20*	No.25

* 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.

Shape	Feauture	Fixed Side Product	Photo	Fixed Side Product	Photo	Customer Merit
Square	Standard	Standard		Standard		Industry standard
	For use in a limited space	Compact		Compact		Easy to use in a limited width space. Suitable for small devices.
		Low Profile		Low Profile		Lower profile linear motion units can be made. Recommended to use it together with Compact Nut.
		Small Mounting Hole Pitch		Small Mounting Hole Pitch		Easy to use in a limited width space. Suitable for small devices.
	Reducing Assembly Man-hour	Standard Type with Dowel Holes		Standard 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 Damper		Standard Type with Damper		Unnecessary 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.
Round	Standard	Standard		Standard		Industry standard
Round	Reducing Assembly Man-hour	-	-	Standard Type with Retaining Ring		Easy 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

Category	Ball Screw	Shaft Collars	Linear Ball Bushings	Flexible Shaft Couplings	Standard Linear Guides
Image

Part Number

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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

Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft 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	8 Days or more	10	8	Black Oxide	17	23	52	4400	4400	11.5
1 Piece(s)	Available	8 Days or more	10	8	Black Oxide	17	23	52	4400	4400	10
1 Piece(s)	Available	8 Days or more	10	10	Black Oxide	25	24	70	7500	4150	14
1 Piece(s)	Available	8 Days or more	10	10	Black Oxide	25	24	70	7500	4150	12
1 Piece(s)	Available	8 Days or more	10	12	Black Oxide	25	24	70	8200	4900	15
1 Piece(s)	Available	Same day Stock	10	15	Black Oxide	30	25	80	9400	6300	20
1 Piece(s)	Available	8 Days or more	10	20	Black Oxide	30	42	95	23600	16800	25
1 Piece(s)	Available	8 Days or more	10	25	Black Oxide	35	48	105	26300	20600	31
1 Piece(s)	Available	8 Days or more	10	10	Black Oxide	22	24	70	7500	4150	14
1 Piece(s)	Available	8 Days or more	10	12	Black Oxide	23	24	70	8200	4900	15
1 Piece(s)	Available	8 Days or more	10	15	Black Oxide	26	25	80	9400	6300	20
1 Piece(s)	Available	8 Days or more	10	15	Black Oxide	28	25	80	9400	6300	20
1 Piece(s)	Available	8 Days or more	10	8	Electroless Nickel	17	23	52	4400	4400	11.5
1 Piece(s)	Available	8 Days or more	10	8	Electroless Nickel	17	23	52	4400	4400	10
1 Piece(s)	Available	8 Days or more	10	10	Electroless Nickel	25	24	70	7500	4150	14
1 Piece(s)	Available	8 Days or more	10	10	Electroless Nickel	25	24	70	7500	4150	12
1 Piece(s)	Available	8 Days or more	10	12	Electroless Nickel	25	24	70	8200	4900	15
1 Piece(s)	Available	8 Days or more	10	15	Electroless Nickel	30	25	80	9400	6300	20
1 Piece(s)	Available	8 Days or more	10	20	Electroless Nickel	30	42	95	23600	16800	25
1 Piece(s)	Available	Same day Stock	10	25	Electroless Nickel	35	48	105	26300	20600	31
1 Piece(s)	Available	8 Days or more	10	10	Electroless Nickel	22	24	70	7500	4150	14
1 Piece(s)	Available	8 Days or more	10	12	Electroless Nickel	23	24	70	8200	4900	15
1 Piece(s)	Available	8 Days or more	10	15	Electroless Nickel	26	25	80	9400	6300	20
1 Piece(s)	Available	8 Days or more	10	15	Electroless Nickel	28	25	80	9400	6300	20

Product TOP

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

Configure

24 Part Numbers

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Configure Remaining Specifications

Completed

Stock

- Stock Item Only
Clear

Specification/Dimensions

Shaft Dia. d(Ø)
8

10

12

15

20

25
Clear
Surface Treatment
- Black Oxide
- Electroless Nickel
Clear
Shaft Height H(mm)
17

22

23

25

26

28

30

35
Clear
Thickness L (or F)(mm)
23

24

25

42

48
Clear
Width B(mm)
52

70

80

95

105
Clear
Oil Seal Applicable Shaft Dia.(φ)
10

11.5

12

14

15

20

25

31
Clear
type
- BSWG
- BSWGN
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

8 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Additional Products in this Category

Complementary Products

Spacers for Ball Screw Support Units.
MISUMI Days to Ship : 8 Days or more
Ball Screws - Screw diameter 8 mm, pitch 2 or 4 millimeters.
MISUMI Days to Ship : 8 Days or more
Precision Ball Screws - Screw diameter 6mm or 8mm, pitch 2 millimeters.
MISUMI Days to Ship : 10 Days or more
Ball Screw Support Unit - For the assembly of Ball Screws with Motors.
MISUMI Days to Ship : 8 Days or more
Ball Screw Support Unit - Fixed Side, Round.
MISUMI Days to Ship : 8 Days or more

MISUMI Unit Example related to this product

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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.; Technical Inquiry

All Categories

Categories

Applications

Brands

How can we improve?

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

Specifications

More Information

Technical Information

Combination of Ball Screws and Support Units

How to Select Support Units Compatible with Ball Screw?

Features of Dowel Pins

Lineup of Fixed-side and Support-side Support Units

Installation process

Precautions on Support Unit Installation

Compatible Models

Part Number

Basic Information

Configure

Stock

Specification/Dimensions

Shaft Dia. d(Ø)

Surface Treatment

Shaft Height H(mm)

Thickness L (or F)(mm)

Width B(mm)

Oil Seal Applicable Shaft Dia.(φ)

type

CAD

Days to Ship

Specify Alterations

Additional Products in this Category

Complementary Products

MISUMI Unit Example related to this product

Tech Support

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