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Applications
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- Webcode Seach | Series
-
#CODE
- Discontinued Products
Linear Ball Bushings - Single Type. LMU/SLMU Series. (Part Numbers)
- Volume Discount
New grease options (Type A: Alvania Grease S2, Type Y: AFF by THK) and more of no seal types are added. [3/31/23]
The most standard type in linear ball bushing products.
- METRIC
- inCAD Components
Part Number
Configured Part Number is shown.
For Feature of Low Temperature Black Chrome Plating, see >> ・Materials
| Type | Outer Cylinder | Balls | Retainer | Ambient Operating Temp. |  Accessories | |||
| Single | Double |  Material |  Hardness |  Surface Finish | Material | Material | ||
| LMU-N | LMUW-N | 52100 Bearing Steel Equivalent | 58HRC~ | - | 52100 Bearing Steel Equivalent | Plastic (Duracon M90 Equivalent) | -20~80°C | *Seal Material Nitrile Rubber (-20~120°C) |
| LMU | LMUW | |||||||
| LMUF-N | LMUWF | Stainless Steel (Stainless Steel) | -20~110°C | |||||
| LMUF | ||||||||
| LMUR | LMUWR | Low Temperature Black Chrome Plating | 440C Stainless Steel Equivalent | Plastic (Duracon M90 Equivalent) | -20~80°C | |||
| LMUM | LMUWM | Electroless Nickel Plating | ||||||
| LMUMF | LMUWMF | Stainless Steel (Stainless Steel) | -20~110°C | |||||
| SLMU | SLMUW | 440C Stainless Steel Equivalent | 56HRC~ | - | Plastic (Duracon M90 Equivalent) | -20~80°C | ||
| SLMUS | SLMUWS | Stainless Steel (Stainless Steel) | -20~120°C | |||||
Specifications
| Part Number | |
| LMU20 LMU-N20  LMUR20 LMUR20L LMUR20G LMUR20H | (No Seal) (Low Temperature Black Chrome Plating) (L Type Greased) (G Type Greased) (H Type Greased) |
For Days to Ship, Price and Performance, see >> Click here
■Single
kgf=Nx0.101972
| Part Number | D Tolerance | L | B | W | D1 | (r) | Eccentricity (Max.) | Rows of Balls | Basic Load Rating | Mass (g) | |||||||
| Type | dr | Tolerance | No Surface Treatment | Surface Treatment | Tolerance | Tolerance | C (Dynamic) N | Co (Static) N | |||||||||
| LMU-N (No Seal) LMU LMUF-N (No Seal) LMUF LMUR LMUM LMUMF SLMU SLMUS | 3 | 0 -0.008 | 7 | 0 -0.009 | 0 -0.015 | 10 | 0 -0.12 | - | - | - | - | 0.3 | 0.008 | 4 | 69 | 105 | 1.4 |
| 4 | 8 | 12 | - | - | - | 88 | 127 | 2.0 | |||||||||
| 5 | 10 | 15 | 8 | 0 -0.4 | 1.1 | 9.6 | 0.4 | 167 | 206 | 4.0 | |||||||
| 6 | 0 -0.009 | 12 | 0 -0.011 | 0 -0.018 | 19 | 0 -0.2 | 11.3 | 11.5 | 0.012 | 206 | 265 | 8.5 | |||||
| 8 | 15 | 24 | 15.3 | 14.3 | 265 | 380 | 17 | ||||||||||
| 10 | 19 | 0 -0.013 | 0 -0.021 | 29 | 19.4 | 1.3 | 18 | 372 | 549 | 31 | |||||||
| 12 | 21 | 30 | 20.4 | 20 | 0.8 | 412 | 598 | 41 | |||||||||
| 13 | 23 | 32 | 22 | 510 | 784 | 46 | |||||||||||
| 16 | 28 | 37 | 23.3 | 1.6 | 27 | 775 | 1180 | 73 | |||||||||
| 20 | 0 -0.010 | 32 | 0 -0.016 | 0 -0.025 | 42 | 27.3 | 30.5 | 0.015 | 5 | 882 | 1370 | 98 | |||||
| 25 | 40 | 59 | 0 -0.3 | 37.3 | 0 -0.5 | 1.85 | 38 | 1.5 | 6 | 980 | 1570 | 236 | |||||
| 30 | 45 | 64 | 40.8 | 43 | 1570 | 2740 | 262 | ||||||||||
| LMU LMUM | 35 | 0 -0.012 | 52 | 0 -0.019 | 0 -0.030 | 70 | 45.3 | 2.1 | 49 | 0.020 | 1670 | 3140 | 425 | ||||
| 40 | 60 | 80 | 56.3 | 57 | 2160 | 4020 | 654 | ||||||||||
| 50 | 80 | 100 | 68.8 | 2.6 | 76.5 | 3820 | 7940 | 1700 | |||||||||
■Double
[ ! ]No-Seal Type has lower sliding resistance (0.4~1.2N). [ ! ]For Precautions for Use, see >> Click here
[ ! ]Spacers and Stoppers for linear bushings can be selected from >> Click here
kgf=Nx0.101972
| Part Number | D Tolerance | L | B | W | D1 | (r) | Eccentricity (Max.) | Rows of Balls | Basic Load Rating | Allowable Static Moment (N·m) | Mass (g) | |||||||
| Type | dr | Tolerance | No Surface Treatment | Surface Treatment | Tolerance | Tolerance | C (Dynamic) N | Co (Static) N | ||||||||||
| LMUW-N (No Seal) LMUW LMUWF LMUWR LMUWM LMUWMF SLMUW SLMUWS | 3 | 0 -0.010 | 7 | 0 -0.011 | 0 -0.015 | 19 | 0 -0.3 | - | - | - | - | 0.3 | 0.010 | 4 | 138 | 210 | 0.51 | 3.2 |
| 4 | 8 | 23 | - | - | - | 176 | 254 | 0.63 | 4.8 | |||||||||
| 5 | 10 | 28 | 18.2 | 0 -0.5 | 1.1 | 9.6 | 0.4 | 263 | 412 | 1.38 | 11 | |||||||
| 6 | 12 | 0 -0.013 | 0 -0.018 | 35 | 24.8 | 11.5 | 0.015 | 324 | 529 | 2.18 | 16 | |||||||
| 8 | 15 | 45 | 32.8 | 14.3 | 431 | 784 | 4.31 | 31 | ||||||||||
| 10 | 19 | 0 -0.016 | 0 -0.021 | 55 | 41.4 | 1.3 | 18 | 588 | 1100 | 7.24 | 62 | |||||||
| 12 | 21 | 57 | 43.4 | 20 | 0.8 | 657 | 1200 | 10.9 | 80 | |||||||||
| 13 | 23 | 61 | 22 | 813 | 1570 | 11.6 | 90 | |||||||||||
| 16 | 28 | 70 | 49.8 | 1.6 | 27 | 1230 | 2350 | 19.7 | 145 | |||||||||
| 20 | 0 -0.012 | 32 | 0 -0.019 | 0 -0.025 | 80 | 57.8 | 0 -0.6 | 30.5 | 0.020 | 5 | 1400 | 2740 | 26.8 | 180 | ||||
| 25 | 40 | 112 | 0 -0.4 | 78.3 | 1.85 | 38 | 1.5 | 6 | 1560 | 3140 | 43.4 | 440 | ||||||
| 30 | 45 | 123 | 85.3 | 43 | 2490 | 5490 | 82.8 | 480 | ||||||||||
| LMUW LMUWM | 35 | 0 -0.015 | 52 | 0 -0.022 | 0 -0.030 | 135 | 94.8 | 2.1 | 49 | 0.025 | 2650 | 6270 | 110 | 795 | ||||
| 40 | 60 | 151 | 116.8 | 57 | 3430 | 8040 | 147 | 1170 | ||||||||||
| 50 | 80 | 192 | 142.8 | 2.6 | 76.5 | 6080 | 15900 | 397 | 3100 | |||||||||
[ ! ]Spacers and Stoppers for linear bushings can be selected from >> Click here
kgf=Nx0.101972
Price list
■Volume Discount Rate ([ ! ]Round down to nearest one cent.) P.89
· LMU, LMUF, LMUW
[ ! ]For orders larger than indicated
quantity, please request a quotation.
· LMUR
[ ! ]For orders larger than indicated
quantity, please request a quotation.
· Others
[ ! ]For orders larger than indicated
quantity, please request a quotation.
· LMU, LMUF, LMUW
| Quantity | 1~19 | 20~34 | 35~49 | 50~99 |
| Discount Rate | Unit Price | 5% | 10% | 18% |
| Days to Ship | Standard | |||
quantity, please request a quotation.
· LMUR
| Quantity | 1~19 | 20~34 | 35~49 | 50~99 |
| Discount Rate | Unit Price | 5% | 10% | 18% |
| Days to Ship | Standard | To Be Quoted | ||
quantity, please request a quotation.
· Others
| Quantity | 1~19 | 20~34 | 35~49 | 50~99 |
| Discount Rate | Unit Price | 5% | 10% | 18% |
| Days to Ship | Standard | To Be Quoted | ||
quantity, please request a quotation.
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.
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Example
Technical Information
Applications for Different Types of Grease
| Type | Product Name | Main Characteristic |
|---|---|---|
| Type L | ET-100K (Made by Kyodo Yushi) | Excellent heat resistance and oxidation stability. Also high adhesion and cohesion with limited spatter or leakage. |
| Type G | LG2 (Made by NSK Ltd.) | Suitable for clean environments due to low particle generation grease. Also good anti-rust properties. |
| Type H | FGL (Lubriplate) | Suitable for the pharmaceutical, food and beverage industry (NSF H-1 Reg. NO.043534). |
Support Information
Reference: Tolerance Range of Linear Bushing and Shafts made by MISUMI
For MISUMI Linear Bushing, it is recommended to use the combination with MISUMI Shafts (hardened to g6 tolerance).
| H6 | H7 | H8 | H9 | Applicable Part | Functional Classification | Application Example | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Can be Moved Relatively | Clearance Fit | Roll Fit | f6 | f7 | f7 f8 | Fitted to provide adequate clearance to permit movement (high quality fit). Regular normal temperature bearing lubricated with grease or oil. | Regular Fitting (Often comes apart.) | Part into which a cooled exhaust valve box is inserted. Regular Shaft and Bushing Link lever and bushing | ||
| Fine Roll Fit | g5 | g6 | Continuously revolving part of a precision machine under a light load. Fitting with a narrow gap so as to permit movement (spigot and positioning). Precision sliding part. | Part required for precise motion with virtually no backlash. | Link Device Pin and Lever Key and its groove Precision control valve rod | |||||
| Cannot be Moved Relatively | Transition Fit | Sliding Fit | h5 | h6 | h7 h8 | h9 | Fitting so as to permit movement by hand, with a lubricant applied (high-quality positioning). Special High Precision Sliding Part Unimportant Stationary Part | Can be disassembled and reassembled without damaging components. | Force cannot be transmitted by the fitting force alone. | Fitting a rim and a boss together Fitting the gear of a precision gear device |
| Push Fit | h5 h6 | js6 | Fitting that accommodates a slight gap. Precision fitting that locks both parts during use. Fitting that allows assembly and disassembly with a wooden or lead hammer. | Fitting Coupling Flanges Together Governor Path and Pin Fitting a Gear Rim and a Boss Together | ||||||
Features
Linear bushings compatible with low-temperature black chrome plating
*The photo shows the condition of the shafts & linear bushings after the sliding test.
ー Low-temperature black chrome plating on linear bushings is a 5µm fluoropolymer layer chemically deposited as a black film, and it has a long-lasting rust preventive effect.
In addition, the coating is resistant to cracking from extreme and repeated bending.
ー Low-temperature black chrome-plated shafts are suitable for locations where rusting or light reflection is undesirable.
ーWhen used as an assembly with a linear shaft that is compatible with low-temperature black chromium plating, it is suitable for rust prone locations.
Note: The bore of the low-temperature chromium-plated Linear Bearing has no surface treatment.
Sliding Test Conditions
50 km sliding test was conducted with a 412 N load on the linear bushing.
No performance degradation after testing.
Linear bushing model compatible with low temperature black chrome plating.
| Straight Type | Compatible Inner Diameter | |
|---|---|---|
 | Single Type | Φ3～φ30 |
 | Double Type | Φ5～φ30 |
| Flange Type | Compatible Inner Diameter | |
 | Single Type | Φ6～φ30 |
 | Double Type | |
MISUMI linear bushings, with the exception of the MX type lubrication unit, are coated with anti-rust oil, but not with grease. By selecting the grease below, you can switch to one with grease application.
Antirust Performance Comparison Test (Reference)
| 52100 Bearing Steel | 440C Stainless Steel | Electroless Nickel Plating | Low Temperature Black Chrome Plating | |
|---|---|---|---|---|
| Before the test |  |  |  |  |
| 72 hrs |  |  |  |  |
| 168 hrs |  |  |  |  |
 |  |  |  |
Test Method: Salt water spray testing method conforms to JIS H8502.
(Spray 35°C, 5% NaCl Solution)
Test Sample: Round Flanged Linear Bushings – Single Type
Compatible Models
Basic Information
| TYPE | Straight | Motion | Linear Motion | Style | Standard |
|---|---|---|---|---|---|
| Lubrication Type | Standard | Type | Straight | Precision | High Grade |
Stock
-
- Stock Item Only
Specification/Dimensions
-
Outer Cylinder Material
- Steel
- 440C Stainless Steel Equivalent
- Steel
-
Outer Cylinder Surface Finish
- None
- Plated
-
For Shaft Size(mm)
-
Overall Length L(mm)
-
O.D. D(mm)
-
Length
- Single
-
Eccentricity(µm)
-
Ball Material
- 440C Stainless Steel Equivalent
- 52100 Bearing Steel Equivalent
-
Retainer Material
- Plastic (Duracon M90 Equivalent)
- Stainless Steel
-
Seals
- No Seal
- With Seal
-
Greased filled
- Standard (Rust Prevent Oil)
- Type G (Low Particlate)
- Type H (For Food and Beverages)
- Type L (Heat Resistance)
-
type
- LMU
- LMU-N
- LMUF
- LMUF-N
- LMUM
- LMUMF
- LMUR
- LMUW
- LMUW-N
- LMUWF
- LMUWM
- LMUWMF
- LMUWR
- SLMU
- SLMUS
- SLMUW
- SLMUWS
-
Ball Recirculating Type
- Single
- Double
-
CAD
- 2D
- 3D
Days to Ship
-
- All
- Same day
- 8 Days or Less
- 12 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
- Linear Ball Bushings - Flanged, double. LHF Series.
- Linear Ball Bushings - Double, special length.
- Linear Ball Bushings - Compact flanged, single. LMH Series.
- Linear Ball Bushings - With central flange, double. LMC-L Series.
- Linear Ball Bushings - With lubrication holes, simple. L-OH Series.
- Linear Ball Bushings - Single, wide block bearing type. Super Smart Series (Inches).
- Linear Ball Bushings - Bearing type, single, steel housing (Inches).
- Linear Ball Bushings - Bearing type, with double open bushing. Super Smart Series (Inches).
Complementary Products
-
Shaft Supports - T-shape, slim body, with top groove. Shaft adjustment with screw.
MISUMI Days to Ship : Same day 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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