Miniature Linear Guides - Wide Rails - Long Blocks, Light Preload
Caution
- We will stop the sale of Carbon Steel Miniature Linear Guide in 2021. Please see below for the details.
End of Sale Notification for MISUMI Carbon Steel Miniature Linear Guide Products - Delivery times for some of our products may be delayed as national government authorities have imposed limit of capacity at our production sites.
Product Description
Miniature Linear Guides - Wide Rails - Long Blocks, Light Preload
These linear guides or linear slides are factory automation components. They offer a wide variety of sizes to choose from.
[Feature]
● Rail Length Minimum/Maximum (mm.): 80 and 670
● Assembly Height (mm.): 9, 12, 14, and 16
● Accuracy Standards : Standard Grade, High Grade and Precision Grade
● Block Type : Long Block
● Rail Type : Wide Rail
● Material: Stainless Steel 56HRC
[Application]
It is used in a variety of machines such as CNC machines, 3D printers, measuring instruments, and so on.
Miniature Linear Guides, Wide Rails, Long Blocks, Light Preload
Miniature linear guides combining the industry-standard wide rail with a long block, giving higher load ratings and allowable moments than the standard block. Light preload (Precision and High grade) and slight clearance (Standard grade) types are available.
- Rail and block: stainless steel equivalent to SUS440C, 56HRC or higher. Uncoated or low-temperature black chrome plating.
- Assembly height H: 9, 12, 14, 16 mm. Rail length: standard lengths or specified in 1 mm increments.
- Blocks and rails cannot be purchased separately.
- Typical applications: CNC machines, 3D printers, measuring instruments.
Product type (part number)
| Block, rail Surface treatment Material (hardness) 1 | Rail length Type 2 | Number of blocks 3 | Preload, accuracy A | Height (H) B | Grease C 4 | ||
|---|---|---|---|---|---|---|---|
| Light preload | Slight clearance | ||||||
| Precision grade | High grade | Standard grade | |||||
| Without surface treatment Stainless steel [SUS440C equivalent] (56HRC–) | Standard length (fixed length) | 1 | SSELBWV | SSELBW | SSELBWZ | 9 12 14 16 | Blank: standard G: G grease L: L grease Y: Y grease H: H grease |
| 2 | SSEL2BWV | SSEL2BW | SSEL2BWZ | ||||
| 1 mm specification (specified length) | 1 | SSELBWLV | SSELBWL | SSELBWLZ | |||
| 2 | SSEL2BWLV | SSEL2BWL | SSEL2BWLZ | ||||
| Low-temperature black Chrome plating Stainless steel [SUS440C equivalent] (56HRC–) | Standard length (fixed length) | 1 | ― | RSELBW | ― | 9 12 14 16 | Blank: standard G: G grease L: L grease Y: Y grease H: H grease |
| 2 | ― | RSEL2BW | ― | ||||
| 1 mm specification (specified length) | 1 | ― | RSELBWL | ― | |||
| 2 | ― | RSEL2BWL | ― | ||||
For the materials of each part, see the MISUMI linear guide product information.
If the standard (fixed) lengths do not include the rail length you need, select 1 mm specification (specified length).
Low-temperature black chrome plated items are available with up to 2 blocks.
Heat resistance: -20 to 80°C.
Types and components
The G dimension of the L-specified type differs from the table below.
L tolerances (mm)
| L dimension range | Tolerance |
|---|---|
| 25 ≤L≤ 400 | 0 -0.8 |
| 400 <L≤ 1000 | 0 -1.0 |
H and W2 dimensional accuracy
| Type | Accuracy standard | Assembled height (H) | Accuracy (μm) | |||
|---|---|---|---|---|---|---|
| Precision grade | High grade | Standard grade | ||||
| Surface treatment None | Low-temperature black Chrome plating | |||||
| Miniature linear guide | Tolerance of height H | 6–20 | ±10 | ±20 | +30 -20 | ±20 |
| Pair difference of height H | 7 | 15 | 15 | 40 | ||
| Tolerance of width W2 | ±15 | ±25 | ±25 | ±25 | ||
| Pair difference of width W2 | 10 | 20 | 20 | 40 | ||
Tolerances of other dimensions
| Size range | Tolerance (mm) | |
|---|---|---|
| Over | Up to | |
| 0.5 | 3 | ±0.1 |
| 3 | 6 | ±0.1 |
| 6 | 30 | ±0.2 |
| 30 | 120 | ±0.3 |
| 120 | 400 | ±0.5 |
| 400 | 1000 | ±0.8 |
| 1000 | 2000 | ±1.2 |
Conforms to JIS B 0405-1991 class m (medium)
Sliding resistance is higher than usual, about 1.2 N or less.
Part numbers and dimensions
| Type | L 5 | Block dimensions | Rail dimensions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Type | H | W | L1 | B | C | S×ℓ | L2 | K | Cb | W1 | W2 | H1 | Ca | Counterbore | F | G 6 | ||
| 1 block | 2 blocks | d1×d2×h | ||||||||||||||||
| SSELBW SSELBWV SSELBWZ SSELBWL SSELBWLV SSELBWLZ RSELBW RSELBWL | SSEL2BW SSEL2BWV SSEL2BWZ SSEL2BWL SSEL2BWLV SSEL2BWLZ RSEL2BW RSEL2BWZ | 9 | 80–380 (110) | 25 | 43.5 | 19 | 19 | M3×3 | 32.5 | 7 | 0.3 | 14 | 5.5 | 5.2 | 0.5 | 3.5×6×3.2 | 30 | 10 |
| 12 | 80–620 (110) | 30 | 51.6 | 23 | 24 | M3×3 | 40.6 | 9 | 0.3 | 18 | 6 | 7.5 | 0.5 | 3.5×6×4.5 | 30 | 10 | ||
| 14 | 110–990 (150) | 40 | 61.6 | 28 | 28 | M3×3.5 | 47.4 | 11 | 0.5 | 24 | 8 | 8 | 0.5 | 4.5×8×4.5 | 40 | 15 | ||
| 16 | 110–990 (190) | 60 | 74.9 | 45 | 35 | M4×4.5 | 59.9 | 13 | 0.5 | 42 | 9 | 9.5 | 0.5 | 4.5×8×4.5 | 40 | 15 | ||
Sizes in ( ) are the shortest rail lengths for the 2-block type.
Align the reference surfaces (the side with the straight groove) of both rail and block correctly when fixing.
Standard (fixed) rail lengths: the table below lists the standard rail lengths for each size.
| Height | Rail length | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ( H ) | ( L ) | ||||||||||||||||||||||
| 9 | (80) | 110 | 140 | 170 | 200 | 230 | 260 | 290 | 320 | 350 | 380 | ||||||||||||
| 12 | (80) | 110 | 140 | 170 | 200 | 230 | 260 | 290 | 320 | 350 | 380 | 410 | 440 | 470 | 500 | 530 | 560 | 590 | 620 | ||||
| 14 | (110) | 150 | 190 | 230 | 270 | 310 | 350 | 390 | 430 | 470 | 510 | 550 | 590 | 630 | 670 | 710 | 750 | 790 | 830 | 870 | 910 | 950 | 990 |
| 16 | (110) | (150) | 190 | 230 | 270 | 310 | 350 | 390 | 430 | 470 | 510 | 550 | 590 | 630 | 670 | 710 | 750 | 790 | 830 | 870 | 910 | 950 | 990 |
Sizes in ( ) are not stocked as standard in the 2-block type.
Basic load rating, static allowable moment, mass, frictional resistance (required thrust), sliding resistance (seal resistance)
kgf=N×0.101972
| Height (H) | Basic load rating | Static allowable moment | Mass | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| C (dynamic) kN | Co (static) kN | 1 block | 2 blocks in close contact | Block kg | Guide rail kg/m | |||||
| MA N·m | MB N·m | MC N·m | MA N·m | MB N·m | MC N·m | |||||
| 9 | 1.7 | 4.0 | 12.1 | 12.1 | 28.8 | 32.2 | 32.2 | 57.6 | 0.035 | 0.5 |
| 12 | 2.6 | 5.3 | 20.2 | 20.2 | 49.5 | 62.0 | 62.0 | 99.0 | 0.06 | 0.96 |
| 14 | 3.9 | 8.5 | 38.6 | 38.6 | 104.6 | 103.8 | 103.8 | 209.2 | 0.12 | 1.4 |
| 16 | 7.2 | 14.3 | 86.0 | 86.0 | 305.2 | 228.3 | 228.3 | 610.4 | 0.23 | 2.95 |
The basic load rating is the same in all 4 directions acting on the block (radial, reverse radial and lateral), so the guide can be used in any orientation.
Static allowable moments with 2 blocks in close contact are reference values, not guaranteed values.
Example: allowable load of H12 under normal operating conditions (kN): 5.3/2 = 2.65 (approx. 271 kg)
The actual frictional resistance (required thrust) of a linear guide varies with the load and other conditions.
- *Sliding resistance values are calculated reference values, not guaranteed values.
Static safety factor (lower limit of fs)
| Operating conditions | Lower limit of fs |
|---|---|
| Normal operating conditions | 1–2 |
| Smooth running required | 2–4 |
| With vibration or shock | 3–5 |
Allowable load (N) ≤ Co/fs; allowable moment (N·m) ≤ (MA, MB, MC)/fs. fs: static safety factor, Co: basic static load rating, MA, MB, MC: static allowable moments (N·m)
Frictional resistance (required thrust)
- Linear guides have lower friction than sliding guides because the rolling elements roll, but friction varies with load, speed and lubricant.
Frictional resistance increases especially under moment loads or preload. Seal resistance varies with seal lip interference and lubricant condition, but is constant and not proportional to load. Frictional resistance is calculated as follows.
F = μ·w + f, F: frictional resistance (N)
μ: dynamic friction coefficient, w: load (N)
f: sliding resistance (seal resistance)
Dynamic friction coefficient
| Type | Dynamic friction coefficient (μ) |
|---|---|
| Miniature linear guide | 0.004–0.006 |
| Medium-load linear guide | 0.002–0.003 |
Calculation example
Conditions: miniature linear guide (standard rail), assembled height (H): 10, sliding resistance (seal resistance): 0.5 (N)
Dynamic friction coefficient (μ): 0.005, load: 150 (N)
F (frictional resistance) = 0.005×150+0.5 = 1.25 (N)
Mounting and handling
Reference surface and mounting direction: the reference surfaces are the block and rail faces with the reference mark (groove). Always align the reference surfaces.
Any mounting direction is possible; the basic load rating is the same.
The block has a retainer (wire) that keeps the balls from falling out.
If blocks and rails are swapped, radial clearance and accuracy are not guaranteed.
Rails cannot be joined end to end.
Linear guide accuracy is guaranteed after the rail is fixed (rail screws tightened and pressed against the reference surface).
Slight rail bending is corrected when the rail is fixed, so it does not affect use.
Grease: supplied packed with lithium soap-based grease (Kyodo Yushi Multemp PS2). Greasing with a different brand is not recommended; use the same brand.
Apply grease directly to the rail, then move the block to spread it.
Alterations
Alterations are available. Refer to the alteration table for applicable codes, dimensional limits and conditions.
For details, please see the PDF catalog.
Technical reference
Shortest rail length with B3 or B4
| H | B3 (3 blocks) | B4 (4 blocks) |
|---|---|---|
| 9 | 170 | 200 |
| 12 | 200 | 260 |
| 14 | 230 | 310 |
| 16 | 270 | 350 |
Related parts compatibility
| Height (H) | Linear guide Clamper | Rail mounting hole Cap | Height adjustment block for miniature linear guides | |||
|---|---|---|---|---|---|---|
| S45C equivalent Electroless nickel plating | Aluminum alloy Clear anodized | |||||
| For wide rails | Reference side | Free side | Reference side | Free side | ||
 |  | ― | ― | |||
| 9 | ― | ― | Miniature linear guide, wide rail type Not available | |||
| 12 | ― | PACK-SGLC3 | ||||
| 14 | SECWK14 | ― | ||||
| 16 | SECWK16 | ― | ||||
No bellows are available for MISUMI linear guides.
Basic load rating and mass (summary)
| H | Basic load rating | Static allowable moment | Mass | ||||
|---|---|---|---|---|---|---|---|
| C (dynamic) kN | Co (static) kN | MA N·m | MB N·m | MC N·m | Block kg | Guide rail kg/m | |
| 9 | 1.7 | 4.0 | 12.1 | 12.1 | 28.8 | 0.035 | 0.50 |
| 12 | 2.6 | 5.3 | 20.2 | 20.2 | 49.5 | 0.06 | 0.96 |
| 14 | 3.9 | 8.5 | 38.6 | 38.6 | 104.6 | 0.12 | 1.40 |
| 16 | 7.2 | 14.3 | 86.0 | 86.0 | 305.2 | 0.23 | 2.95 |
Preload and accuracy standards
Unit: μm
| Specifications | Light preload High grade | Light preload Precision grade | Slight clearance Standard grade |
|---|---|---|---|
| Radial clearance | -3–0 | 0–+15 | |
| Tolerance of height H | ±20 | ±10 | ±20 |
| Pair difference of height H | 15 | 7 | 40 |
| Tolerance of width W2 | ±25 | ±15 | ±25 |
| Pair difference of width W2 | 20 | 10 | 40 |
| Running parallelism of surface C to surface A | |||
| Running parallelism of surface D to surface B | |||
The slight-clearance type has clearance (play) between rail and block.
Where accuracy and rigidity are needed, select the light preload type.
Miniature type, unit: μm
| ●Standard preload type | High grade |
| Tolerance of height H | +30 -20 |
| Pair difference of height H | 15 |
| Tolerance of width W | ±25 |
| Pair difference of width W | 20 |
The accuracy of low-temperature black chrome plated miniature linear guides is as shown above. Medium and heavy load types have the same accuracy as standard items.