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Linear Bushing - Standard, Medium[RoHS Compliant] (C-LMUDM8)
![Linear Bushing - Standard, Medium[RoHS Compliant] C-LMUDM8](http://content.misumi-ec.com/image/upload/t_product_main/t_misumi_wm/v1/p/jp/product/series/110310342449/110310342449_20230816170417.jpg?$product_main$)
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- Volume Discount
RoHS10 compliant.
Medium-precision linear bushing with relaxed O.D. tolerances such as I.D. and L dimension.
(i)Caution
- Bushings are applied with anti-rust oil harmless to lubricants. After cleaning (recommended cleaning method: ultrasonic cleaner or white kerosene) and drying the bushings, grease application is recommended before use.
- Some of the current product code is scheduled to be discontinued by end of Jul 2025.
We apologize for the inconvenience. Similar alternative products will be posted after the date.
Part Number
Configured Part Number is shown.
C-LMUDM8
Dimensional Drawing of Linear Bushings
| Type of Linear Bushings | Outer cylinder | ball | retainer | Operating atmosphere temperature | [A] Accessories | ||
| [M]Material | [H]Hardness | [S]Surface treatment | [M]Material | [M]Material | |||
| C-LMUD | Equivalent to SUJ2 | 58HRC～ | − | Equivalent to SUJ2 | resin | −20～80℃ | Seal [M] Material: Nitrile rubber |
| C-LMUDM | Electroless nickel plating | ||||||
Specification Table of Linear Bushings
| Order example of Linear Bushings | Model (Type・dr) | |
| C-LMUD10 C-LMUDM20 |
| dr | D | L | B | W | D1 | Eccentricity (maximum) | ball row | Basic load rating | Static allowable moment (N/m) | Reference mass (g) | |||||
| tolerance | tolerance | tolerance | tolerance | ||||||||||||
| C(dynamic)N | Co(static)N | ||||||||||||||
| 6 | 0 -0.010 | 12 | 0 -0.013 | 29 | +0.3 -0.6 | 20 | 0 -0.5 | 1.1 | 12 | 0.03 | 4 | 226 | 310 | 1.42 | 12 |
| 8 | 15 | 37 | 25 | 14 | 310 | 452 | 2.12 | 27 | |||||||
| 10 | 19 | 0 -0.016 | 47 | 30 | 1.3 | 18 | 508 | 718 | 4.37 | 49 | |||||
| 12 | 21 | 20 | 634 | 814 | 6.2 | 54 | |||||||||
| 13 | 23 | 22 | 640 | 826 | 6.2 | 69 | |||||||||
| 16 | 28 | 56 | 35 | 1.6 | 27 | 5 | 1164 | 1448 | 13.1 | 112 | |||||
| 20 | 0 -0.012 | 32 | 0 -0.019 | 65 | 40 | 0 -0.6 | 31 | 0.04 | 1554 | 2068 | 18.3 | 152 | |||
| 25 | 40 | 83 | 54.9 | 1.9 | 38 | 6 | 1725 | 3068 | 25.3 | 332 | |||||
| 30 | 45 | 90 | 71.2 | 43 | 2440 | 3974 | 42.7 | 422 | |||||||
[ ! ] For shaft and housing tolerances, please check "Recommended tolerances for shaft diameter and housing diameter."
kgf＝N×0.101972
■Price list of Linear Bushings
・The price list below is information as of March 2019
.・For the latest price, please click the "Check Price" button after confirming the model number.
| dr | ￥ standard unit price | |
| C-LMUD | C-LMUDM | |
| 6 | 300 | 450 |
| 8 | 290 | 440 |
| 10 | 300 | 450 |
| 12 | 320 | 470 |
| 13 | 340 | 500 |
| 16 | 390 | 580 |
| 20 | 540 | 770 |
| 25 | 730 | 1,100 |
| 30 | 980 | 1,480 |
Product Summary of Linear Bushings
♢ Get up to 50% discount on similar products from our company by purchasing in bulk! !
[Product comparison information of Linear Bushings]
The dimensional tolerances of the inner diameter (dr) and outer diameter (D) have been improved to the same tolerance as our similar products.
| Our similar product LMUD20 | Economy series C-LMUD20 | |
| Inner diameter tolerance | 0－0.012 | 0－0.012 |
| Outer diameter tolerance | 0－0.019 | 0－0.019 |
| Total length tolerance | 0-0.3 | + 0.3-0.6 |
| Eccentricity (maximum) | 0.02 | 0.04 |
[Price comparison with our similar products of Linear Bushings]
| Order quantity | Our similar product LMUD16 | This product C-LMUD16 | price reduction rate |
| 1 | 660 | 390 | 41% |
| 51 | 594 | 351 | 41% |
| 101 | 541 | 273 | 50% |
| Order quantity | Discount rate C-LMUD16 |
| 1-50 | - |
| 51～100 | 10% |
| 101～1000 | 30% |
Cautions/Prohibitions of Linear Bushings
① For grease lubrication, apply grease to the ball rows on the inner surface of the linear bushing before use, and then lubricate at appropriate times.
Grease forms an oil film on the surfaces of the steel balls and raceway surfaces (shaft bushing) of linear bushings, reducing friction and preventing seizure.
Grease loss and deterioration greatly affect the lifespan of linear bushings.
② Recommended lubrication grease: Lithium-based soap-based grease
③ Recommended lubrication interval: Normally every 6 months
If the mileage is long, we recommend lubrication every 3 months, and if the mileage exceeds 1000km within the period, we recommend lubrication every 1000km.
④If a large moment load (unbalanced load) is applied to the linear bushing, it is not suitable to use the single type alone.
We recommend using a double type or multiple single types.
■Dust-proof measures of Linear Bushings
Please be aware that if foreign matter or dust gets inside the linear bushing, it will interfere with the circulation of the steel balls and cause an unexpected accident.
When using the product in harsh environments, attach a dustproof cover or protective cover.
■We recommend a hardened shaft with G6 tolerance for Miss Millinial Bushing.
How to Use of Linear Bushings
| Illustration | Instructions for use |
 | If a large load (unbalanced load) is applied to the linear bushing, it is not suitable to use the single type alone. We recommend using a double type or multiple single types. |
 | Linear Bushings are not suitable for rotational motion due to their structure. Please be careful not to force the rotation as it may cause damage. |
 | Linear Bushings are not suitable for applications where they are repeatedly inserted and removed. |
| When inserting the shaft into the linear bushing, if the shaft is inserted in a strained state, the balls may fall off or the retainer may become deformed, so please align the centers and insert it gently. |
Example use of Linear Bushings
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 |
|---|
| C-LMUDM8 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Overall Length L (mm) | Outer Cylinder Surface Treatment | Eccentricity (µm) | Basic Load Rating: Dynamic Load (Details) (N) | Basic Load Rating: Static Load (N) | Inscribed Circle Dia. Tolerance (Negative Side) (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 43.48 | 1 Piece(s) | Available | 4 Day(s) or more | 10 | - | [Surface Treatment] Electroless nickel plating | 24 | 310 | 452 | -0.01 |
Loading...
(1) For grease lubrication, apply grease to the ball rows within the linear bushings before use, then periodically apply grease during the use.
The grease has an effect of reducing friction by forming a layer between the balls and shaft rolling surfaces, preventing seizures.
Grease loss and deterioration will cause shorter life of linear guides.
(2) Recommended Grease: Lithium soap based grease
(3) Recommended Lubrication Intervals: Every 6 months
Recommended lubrication is that every 3 months when travel distance is extensive, or every 1000 km when travel distance exceeds 1000 km within the period.
(4) If large moment load (offset load) is to be applied, Short / Single Type Linear Bushings are not suitable.
Use of Double Type or Multiple Linear Bushings is recommended.
■Dust-Proofing Measures
Please be aware that if foreign objects or dusts get inside the linear bushing, it will interfere with the circulation of the steel balls and cause failures.
Please attach a dust cover or protection cover for harsh usage environments.
■Use of a hardened shaft with g6 tolerance is recommended for MISUMI Linear Bushings.
| Illustration | Instructions for Use |
 | If large load (offset load) is to be applied, Single Type Linear Bushings are not suitable. Use of Double Type or Multiple Linear Bushings is recommended. |
 | Linear Bushings are not suitable for rotating motion due to their structure. Forcing to rotate may cause failures. |
 | Linear Bushings are not suitable for usage with repetitive insertion and extraction of shafts. |
 | When assembling with linear shafts, forcing the shaft into the bushing with angular misalignment may cause the ball retainers to deform and balls to fall out. Be sure to align the centers and insert the shaft gently. |
▲Oil Seal Press Fitting Jig
Basic Information
| Type | Straight | Lubrication Type | Not Provided | Types | Standard Flange |
|---|---|---|---|---|---|
| Length | Medium | Linear Motion / Rotational Motion | Linear Bushing (Linear Motion Only) | Ball Material | SUJ2 Equivalent |
| Retainer Material | Plastic | Seal | With Seal |
Please check the type/dimensions/specifications of the part C-LMUDM8 in the Linear Bushing - Standard, Medium[RoHS Compliant] series.
Specification/Dimensions
-
Overall Length L(mm)
-
type
- C-LMUD
- C-LMUDM
-
Outer Cylinder Surface Treatment
- No Surface Treatment
- Surface Treatment
-
Eccentricity(µm)
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- 4 Day(s) or Less
- 11 Day(s) or Less
- 27 Day(s) or Less
Specify Alterations
- The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .
Products like this...
| Part Number |
|---|
| C-LMUD10 |
| C-LMUD12 |
| C-LMUD13 |
| C-LMUD16 |
| C-LMUD20 |
| C-LMUD25 |
| Part Number | Standard Unit Price | Minimum order quantity | Volume Discount | Days to Ship | RoHS | Overall Length L (mm) | Outer Cylinder Surface Treatment | Eccentricity (µm) | Basic Load Rating: Dynamic Load (Details) (N) | Basic Load Rating: Static Load (N) | Inscribed Circle Dia. Tolerance (Negative Side) (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
MYR 22.66 | 1 Piece(s) | 11 Day(s) | 10 | 47 | No Surface Treatment | 24 | 508 | 718 | -0.01 | ||
MYR 22.66 | 1 Piece(s) | 11 Day(s) | 10 | 47 | No Surface Treatment | 24 | 634 | 814 | -0.01 | ||
MYR 23.44 | 1 Piece(s) | 27 Day(s) | 10 | 47 | No Surface Treatment | 24 | 640 | 826 | -0.01 | ||
MYR 22.64 | 1 Piece(s) | 11 Day(s) | 10 | 56 | No Surface Treatment | 24 | 1164 | 1448 | -0.01 | ||
MYR 27.14 | 1 Piece(s) | 11 Day(s) | 10 | 65 | No Surface Treatment | 30 | 1554 | 2068 | -0.012 | ||
MYR 44.04 | 1 Piece(s) | 27 Day(s) | 10 | 83 | No Surface Treatment | 30 | 1725 | 3068 | -0.012 |
Additional Products in this Category
- Spacers for Linear Bushings
- Flanged Linear Bushing - Standard, Pilot Flanged, Single[RoHS Compliant]
- Flanged Linear Bushing - Standard, Pilot Flanged, Double[RoHS Compliant]
- Square Flanged Linear Bushings With Pilot, Single / Double
- Linear Bushings Straight Medium
- Linear Bushing Slit (Opening) Type [LKBMUUOP]
- Flanged Linear Bushing / Spigot Joint / Long Type / Round Flange [LMYMFPLUU]
- Linear Bushing LMI/LMI-L Models (Pilot Flange Type)
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