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#CODE
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Ball Screw Support Unit - Support Side, Block Type. With retaining ring. (Part Numbers)
- Volume Discount
- inCAD Components
Part Number
Configured Part Number is shown.
| Type | [ M ]Material | [ S ]Surface Treatment | |
| Standard | with Retaining Ring | ||
| BUN | BTN | 1045 Carbon Steel | Black Oxide |
| BUNM | BTNM | Electroless Nickel Plating | |
| BUNR | - | Low Temperature Black Chrome Plating | |
Specifications
| Part Number |
| BUN15 BUND15 |
| Number | Part Name | Quantity |
| ① | Housing | 1 |
| ② | Radial Bearing | 1 |
| ③④ | Retaining Ring* | 1 |
* Retaining rings ③, ④ of BUNR and BUNM are Stainless Steel Type.
| Part Number | d | L | B | H | h | B1 | H1 | P | V | d1 | d2 | ℓ | Retaining Ring | Bearing Type | Retaining Ring | ||
| Type | No. | G | Retaining Ring | ||||||||||||||
| BUN BUNM BUNR BTN BTNM | 6 | 6 | 12 | 42 | 25 | 13 | 18 | 20 | 30 | 17 | 5.5 | 9.5 | 11 | 3 | RTWN·S17 | B606ZZ | STWN·S6 |
| 8 | 15 | 52 | 32 | 17 | 25 | 26 | 38 | 6.6 | 11 | ||||||||
| 1022 | 8 | 20 | 70 | 40 | 22 | 36 | 21 | 52 | 22 | 9 | - | - | 3 | RTWN·S22 | B608ZZ | STWN·S8 | |
| 10 | 43 | 25 | 24 | ||||||||||||||
| 1223 | 10 | 41 | 23 | 22 | 26 | 3 | RTWN·S26 | B6000ZZ | STWN·S10 | ||||||||
| 12 | 43 | 25 | 24 | ||||||||||||||
| 1526 | 15 | 80 | 46 | 26 | 41 | 21 | 60 | 32 | 11 | 4 | RTWN·S32 | B6002ZZ | STWN·S15 | ||||
| 1528 | 48 | 28 | 23 | ||||||||||||||
| 15 | 50 | *30 | 25 | ||||||||||||||
| 20 | 20 | 26 | 95 | 58 | 56 | 30 | 75 | 47 | 4.5 | RTWN·S47 | B6204ZZ | STWN·S20 | |||||
| 25 | 25 | 30 | 105 | 68 | 35 | 66 | 25 | 85 | 52 | RTWN·S52 | B6205ZZ | STWN·S25 | |||||
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 | |
| No.6L | No.10 | No.15* | ||||||||
* Except C-BSFW15 and 20, C-BUFN15 and 20
Shape of Support Units
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 |
| 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
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.
| Part Number |
|---|
| BTN6 |
| BTN8 |
| BTN10 |
| BTN12 |
| BTN15 |
| BTN20 |
| BTN25 |
| BUN6 |
| BUN8 |
| BUN10 |
| BUN12 |
| BUN15 |
| BUN20 |
| BUN25 |
| BUN1022 |
| BUN1223 |
| BUN1526 |
| BUN1528 |
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Basic Information
| Cost Efficient | Standard | Type | Support Side Type | Shape | Square Type |
|---|---|---|---|---|---|
| Mounting Method | From Top | Bearing Type | Radial Bearing | Material | 1045 Carbon Steel |
| Set | Support Side Only |
Stock
-
- Stock Item Only
Specification/Dimensions
-
Shaft Dia. d(Ø)
-
Shaft Height H(mm)
-
Thickness L (or F)(mm)
-
Width B(mm)
-
type
- BTN
- BTNM
- BUN
- BUNM
- BUNR
-
Surface Treatment
- Black Oxide
- Electroless Nickel
- Low Temperature Black Chrome
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- Same day
- 8 Days or Less
- 9 Days or Less
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
- Support Unit for Ball Screws with Dampers - Support Side.
- Ball Screw Support Unit - Fixed Side, Round.
- Ball Screw Support Units - Fixed Side, Round. With radial bearings.
- Ball Screw Support Unit - Fixed Side, Block Type. Economic series.
- Ball Screw Support Unit - Fixed Side, Block Type, Low Profile.
- Ball Screw Support Unit - Support Side, Block Type, Low Profile.
- Ball Screw Support Unit - Fixed Side, Block Type. Product C-Value.
- Ball Screw Support Unit - Support Side, Round. Product C-Value.
Complementary Products
-
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
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.
- Technical Inquiry
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