Support Units for Ball Screw, Support Side Round Type
Brand :
MISUMI
Caution
Product Description
This is an economy item, The price is cheaper than the MISUMI standard product.
Product Overview
Dimensional Drawing
■Material Table
(*)Marked Low Temperature Black Chrome Plating is under preparation. Currently special order request can be accepted under the condition of MOQ.
| Type | Material | Surface treatment |
| ① | ① | |
| C-TFF | S45C equivalent | Black oxide |
| *C-TFFHR | Low Temperature Black Chrome Plating |
(*)Marked Low Temperature Black Chrome Plating is under preparation. Currently special order request can be accepted under the condition of MOQ.
Support Unit and Rated Load
| Bearing No. | Basic Dynamic Rated Load (N) | Basic Static Rated Load (N) |
| 3 | 440 | 150 |
| 4 | 910 | 340 |
| 6 | 1580 | 580 |
| 10 | 2310 | 960 |
| 12 | 3190 | 1380 |
| 15 | 3920 | 1980 |
| 17 | 6690 | 3360 |
| 20 | 8960 | 4620 |
| 25 | 9800 | 5500 |
| 30 | 13650 | 7910 |
Specification Table
| Part Number | Axis Diameter d | L | H | F | D | A | P.C.D. | B | V | d1 | d2 | ℓ | Retaining ring | |
 Type |  No. | |||||||||||||
| C-TFF (Black oxide) *C-TFFHR (Low Temperature Black Chrome Plating) | 3 | 3 | 10 | 6 | 4 | 18 | 32 | 24 | 25 | 10 | 3.4 | 6.5 | 4 | Thickness 0.25 |
| 4 | 4 | 13 | Thickness 0.25 | |||||||||||
| 6 | 6 | 22 | 36 | 28 | 28 | 17 | STWN6 | |||||||
| 10 | 8 | 12 | 7 | 5 | 28 | 43 | 35 | 35 | 22 | STWN8 | ||||
| 12 | 10 | 15 | 8 | 34 | 52 | 42 | 42 | 26 | 4.5 | 8 | STWN10 | |||
| 15 | 15 | 17 | 9 | 40 | 63 | 50 | 52 | 32 | 5.5 | 9.5 | 5.5 | STWN15 | ||
| 17 | 17 | 20 | 11 | 9 | 50 | 77 | 61 | 61 | 40 | 6.6 | 11 | 6.5 | STWN17 | |
| 20 | 20 | 57 | 85 | 70 | 68 | 47 | STWN20 | |||||||
| 25 | 25 | 24 | 14 | 10 | 63 | 98 | 80 | 79 | 52 | 9 | 14 | 8.5 | STWN25 | |
| 30 | 30 | 27 | 18 | 9 | 75 | 117 | 95 | 93 | 62 | 11 | 17.5 | 11 | STWN30 | |
(1), (2), and (3) are separate components. Please keep them properly.(*)Marked Low Temperature Black Chrome Plating is under preparation. Currently special order request can be accepted under the condition of MOQ.Product Features
Suface treatment comparison:
The black oxide type is cost-effective and can resist corrosion if protective oil is applied regularly.
If it is used in a high-humidity environment or requires less maintenance, it is recommended to use the low-temperature black chrome type.
The black oxide type is cost-effective and can resist corrosion if protective oil is applied regularly.
If it is used in a high-humidity environment or requires less maintenance, it is recommended to use the low-temperature black chrome type.
| Specification | Black Oxide | Low-Temperature Black Chrome |
| Method | Chemical conversion on steel surface forming black oxide layer | Electroplating black chrome at low temperature, usually with Ni underlayer. |
| Surface Quality | Matte black, prone to fading with abrasion. | Deep black, smooth, durable color, high aesthetics. |
| Coating Thickness | Very thin, ~0.5–1.5 μm, almost no dimensional change. | 0.3–2 μm, thicker if Ni underlayer is applied. |
| Corrosion Resistance | Moderate, depends on oil layer; not suitable for long-term outdoor use. | Very high, withstands humid/salty environments, long coating life. |
| Advantages | Low cost, fast, no dimensional change, easy to reprocess. | Superior corrosion resistance, hard, durable color, high aesthetics. |
| Disadvantages | Poor corrosion resistance without maintenance, easy fading. | Complex process, higher cost. |
Usage Method
Precautions
Example of Use
