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Oil Free Bushing Housing Units Square Flanged (C-MFK25-108)
- Volume Discount
- Oil Free Bushing Housing Units Square Flanged, C-MFK series from MISUMI.
- Upgraded Economy Series Oilless Bushing Unit with technical enhancements.
- The case material changed from stainless steel to lightweight aluminum alloy.
- Oilless bushing material upgraded to a durable bronze alloy.
- Integrated one-piece design ensures even distribution of solid lubricant.
- Improved lubrication performance and significantly reduced noise
- Recommended for vertical motion applications.
- Easy installation and lower maintenance frequency
- Upgrade your equipment for smoother operations and enhanced durability.
Part Number
Configured Part Number is shown.
C-MFK25-108
Economy Oil Free Bushing Housing
- Constructed from lightweight aluminum alloy with a durable bronze alloy liner. Offers high strength, corrosion resistance, and improved performance
- Specifically recommended for vertical motion applications. Ensures smooth and reliable operation in vertical setups, enhancing machine performance
- The bronze alloy bushing provides superior wear resistance. Extends the service life of the unit, minimizing downtime and replacement costs
- Bushing is fixed using a press-fit method with strong glue, improving adhesion significantly compared to traditional methods
- Operates effectively across a wide temperature range. Suitable for use in extreme temperature environments, ensuring versatility
MISUMI Standard
Cheaper Price
Product Variety
3D CAD Support
Oil Free Bushings Product Overview
The oilless bushing is no longer embedded in a hole but integrated as one piece, ensuring more evenly distributed solid lubricant
, improved lubrication performance and significantly reduced noise.
This product is recommended for motions in the vertical direction, allowing easy installation and low maintenance frequency.
Oil Free Bushings Product Features
1. It is the first time MISUMI has integrated oilless bushing in copper plate, with the assistance of strong glue, allowing the bushing and aluminum alloy case to be tightly press-fitted (patent pending). Compared with the ordinary solid lubricant embedded product, the new solid lubricant is distributed more evenly and the lubricating area is increased by 20%, lubrication effect of oil free bushing greatly improved.
2. Longer service life due to improved lubrication
Conventional type: Final wear amount of 0.030 mm
New product: Final wear amount of 0.020 mm
Experiment conditions: Surface pressure of 25 N/mm2, swing speed of 1 m/min, swing frequency of 96,000 times, experiment time of 100 h
Conventional type
New Products
Test demonstration: Analysis result of 0.1 mm forced shift of guide shaft in Y direction after the oilless bushing is fixed with screws.
| Material | Yield Strength | Stress concentration result |
| Aluminum Alloy A6061 | 240Mpa | 30.3Mpa |
| Steel SS400 | 235Mpa | 42.5Mpa |
| Stripping test | |
| Circlip fixed product | New Products |
| 1.73Mpa | 2.45Mpa |
Oil Free Bushings Dimensional Drawing
Case material: Aluminum alloy A6061
Surface treatment: Passivation treatment
Liner material: Bronze alloy
* Passivation is a method of treatment to generate a passivation film through direct reaction between aluminum alloy and chemical solution, thereby improving corrosion resistance and bonding force
| Part Number | d | D | L | L1 | H | T | d1 | d2 | t | P.C.D | W | F | A | |||||
| Type | Tolerance | Tolerance | Short | Long | ||||||||||||||
| Round Flanged C-MFM | Square Flanged C-MFK | Flanged type C-MFN | 10 | +0.028 0 | 19 | 0 -0.018 | 32 | 57 | 5 | 40 | 6 | 4.5 | 7.5 | 4.1 | 29 | 30 | - | 29 |
| 12 | +0.034 0 | 21 | 0 -0.021 | 32 | 57 | 10 | 42 | 32 | 32 | - | 32 | |||||||
| 16 | 28 | 37 | 67 | 48 | 38 | 37 | 22 | 31 | ||||||||||
| 20 | +0.041 0 | 32 | 0 -0.025 | 42 | 77 | 54 | 8 | 5.5 | 9 | 5.1 | 43 | 42 | 24 | 36 | ||||
| 25 | 40 | 58 | 108 | 62 | 51 | 50 | 32 | 40 | ||||||||||
| 30 | 45 | 68 | 128 | 74 | 10 | 6.6 | 11 | 6.1 | 60 | 58 | 35 | 49 | ||||||
| 40 | +0.050 0 | 60 | 0 -0.030 | 80 | 150 | 15 | 96 | 13 | 9 | 14 | 8.1 | 78 | 75 | 50 | 60 | |||
| 50 | 80 | 90 | 170 | 116 | 98 | 92 | 58 | 80 | ||||||||||
Oil Free Bushings Usage Method
Oil Free Bushings Specifications Overview
Oil Free Bushings Example of Use
Part Number
CAD Data download and 3D preview are not available because the part number has not yet been determined.
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- Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
| Part Number |
|---|
| C-MFK25-108 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Inner Dia. d (Ø) | Outer Dia. D (Ø) | Overall Length L (mm) |
|---|---|---|---|---|---|---|---|---|
SGD 76.68 | 2 Piece(s) | Available | 5 Day(s) | 10 | 25 | 40 | 108 |
Loading...
| Part Number | d | D | L | L1 | H | T | d1 | d2 | t | P.C.D | W | F | A | |||||
| Type | Tolerance | Tolerance | Short | Long | ||||||||||||||
| Round Flanged C-MFM | Square Flanged C-MFK | Flanged type C-MFN | 10 | +0.028 0 | 19 | 0 -0.018 | 32 | 57 | 5 | 40 | 6 | 4.5 | 7.5 | 4.1 | 29 | 30 | - | 29 |
| 12 | +0.034 0 | 21 | 0 -0.021 | 32 | 57 | 10 | 42 | 32 | 32 | - | 32 | |||||||
| 16 | 28 | 37 | 67 | 48 | 38 | 37 | 22 | 31 | ||||||||||
| 20 | +0.041 0 | 32 | 0 -0.025 | 42 | 77 | 54 | 8 | 5.5 | 9 | 5.1 | 43 | 42 | 24 | 36 | ||||
| 25 | 40 | 58 | 108 | 62 | 51 | 50 | 32 | 40 | ||||||||||
| 30 | 45 | 68 | 128 | 74 | 10 | 6.6 | 11 | 6.1 | 60 | 58 | 35 | 49 | ||||||
| 40 | +0.050 0 | 60 | 0 -0.030 | 80 | 150 | 15 | 96 | 13 | 9 | 14 | 8.1 | 78 | 75 | 50 | 60 | |||
| 50 | 80 | 90 | 170 | 116 | 98 | 92 | 58 | 80 | ||||||||||
Basic Information
| Type | Housing Unit | Metal Type | Special Bronze Cast | Environment | Standard / In Oil |
|---|---|---|---|---|---|
| Housing Unit Type | Square Flange | Mounting Shaft Fits | g6 / f8 | Lubrication | Unlubricated / Regular Lubrication |
| Max. Allowable Surface Pressure P(N/mm2) | 29 | Case Material | Aluminum Alloy | Maximum Allowable Velocity(m/s) | 0.5 |
| Max. Allowable PV Value Range(N/mm2•m/s) | 1.1~2.0 | Max. Allowable PV Value(N/mm2•m/s) | 1.65 | Operating Temperature Range(°C) | -40::200 |
| Seal Type | No Seal |
Please check the type/dimensions/specifications of the part C-MFK25-108 in the Oil Free Bushing Housing Units Square Flanged series.
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Frequently asked question (FAQ)
- Question: What is an oilless bushing and what features does it have?
-
Answer:
The bushing body is soaked in lubricating oil. It is a slide bearing which can be “used without oil supply” or “can reduce oil supply times”.
Oilless bushings have the following features:
1. Low maintenance frequency;
2. Compared with ball linear bearings, oilless bushings are suitable for low-speed and heavy-load occasions;
3. Allow use under severe conditions of high temperature and low temperature;
4. Compared with linear bearings, oilless bushings are thinner, saving space;
5. Allow use for both linear motion and rotary motion. - Question: What materials are MISUMI oilless bushings made of, and what features do they have respectively?
-
Answer:
MISUMI provides oilless bushings made of five materials, including copper alloy, bronze casting, dry type, resin and casting.
Copper alloys (metals) have high temperature resistance, excellent chemical resistance and impact resistance, and is suitable for heavy load and low-speed operation.
Bronze castings (metals) have excellent sintering resistance, can realize micro-operation, and are suitable for low-load and high-speed operation.
Dry (composite layers), resistant to high temperature, suitable for heavy load and low-speed operation, thin wall and compact.
Resin (resins), resistant to high temperature and chemicals (polytetrafluoroethylene resin), compliant with food hygiene law and suitable for low load and low-speed operation.
Castings (metals) are suitable for medium load and low-speed operation.
Similar Part Numbers
| Part Number |
|---|
| C-MFK12-57 |
| C-MFK16-37 |
| C-MFK16-67 |
| C-MFK25-58 |
| C-MFK30-128 |
| C-MFK30-68 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Inner Dia. d (Ø) | Outer Dia. D (Ø) | Overall Length L (mm) |
|---|---|---|---|---|---|---|---|---|
SGD 34.84 | 2 Piece(s) | Available | 5 Day(s) | 10 | 12 | 21 | 57 | |
SGD 19.77 | 1 Piece(s) | Available | Same day | 10 | 16 | 28 | 37 | |
SGD 41.92 | 2 Piece(s) | Available | 5 Day(s) | 10 | 16 | 28 | 67 | |
SGD 34.35 | 2 Piece(s) | Available | 5 Day(s) | 10 | 25 | 40 | 58 | |
SGD 99.95 | 2 Piece(s) | Available | 5 Day(s) | 10 | 30 | 45 | 128 | |
SGD 35.41 | 2 Piece(s) | Available | 5 Day(s) | 10 | 30 | 45 | 68 |
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