Support Units-Support Side/Square (Standard)
Brand :
MISUMI
Caution
Product Description
[Features]
• Material and surface treatment options include S45C with black oxide, electroless nickel plating, or low-temperature black chrome.
• Square support-side construction uses a radial bearing and retaining ring, helping match the support layout to the shaft end.
[Use]
• Select by shaft diameter, housing dimensions, bearing type, and retaining ring.
• No.1022~25 are not counterbored; check nut-bottom clearance for listed ball screw combinations.
Support Units, Support Side, Square, Standard
Square support-side units for ball screws, consisting of a housing, a radial ball bearing and a retaining ring.
- Types: BUN, BUNM and BUNR. Select the type by surface treatment, then the No. (size).
- Not compatible with Economy Series ball screws. Select ball screws that are not marked as economy products.
- Nos. 1022 to 25 are not counterbored.
Features and drawing
- Nos. 1022–25 are not counterbored.
| Type | Material | Surface treatment |
|---|---|---|
| Standard | ||
| BUN | S45C | Black oxide |
| BUNM | Electroless nickel plating | |
| BUNR | Low-temperature black chrome plating |
Part numbers and dimensions
Ordering example
| Type | |
|---|---|
| BUN15 | (support side, single item) |
Components
| No. | Part name | Quantity |
|---|---|---|
| ① | Housing | 1 |
| ② | Japanese radial bearing | 1 |
| ③ | Retaining ring (STWN, S) | 1 |
- BUNR bearings are stainless steel, packed with low-dust grease.
- * Retaining ring ③ of BUNR and BUNM is stainless steel.
| Type | d | L | B | H | h | B1 | H1 | P | V | d1 | d2 | ℓ | Bearing Type | Retaining ring used | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | No. | ||||||||||||||
| BUN BUNM BUNR | 6 | 6 | 12 | 42 | 25 | 13 | 18 | 20 | 30 | 17 | 5.5 | 9.5 | 11 | 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 | - | - | B608ZZ | STWN, S8 | |
| 10 | 43 | 25 | 24 | ||||||||||||
| 1223 | 10 | 41 | 23 | 22 | 26 | B6000ZZ | STWN, S10 | ||||||||
| 12 | 43 | 25 | 24 | ||||||||||||
| 1526 | 15 | 80 | 46 | 26 | 41 | 21 | 60 | 32 | 11 | B6002ZZ | STWN, S15 | ||||
| 1528 | 48 | 28 | 23 | ||||||||||||
| 15 | 50 | *30 | 25 | ||||||||||||
| 20 | 20 | 26 | 95 | 58 | 56 | 30 | 75 | 47 | B6204ZZ | STWN, S20 | |||||
| 25 | 25 | 30 | 105 | 68 | 35 | 66 | 25 | 85 | 52 | B6205ZZ | STWN, S25 | ||||
- *With No. 20 combined with ball screws BSSZ(K)2510, BSSR(K)2510 or BSST2510, the ball screw nut may contact the bottom surface. Take care at the design stage.