Miniature Linear Guides - Wide Rails - Wide Long Blocks, Light Preload

Brand :

MISUMI

Caution

We will stop the sale of Carbon Steel Miniature Linear Guide in 2021.
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 - Wide 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
● Block Type : Wide 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.

Type (Part Number)

Drawing

Specification / Dimensions Table

Basic Load Rating, etc.

Alterations (Optional)

Type (Part Number)

Surface Treatment Material (Hardness)	Rail Length Type 1	Number of Blocks	Preload/Accuracy A		Height (H) B	Grease C
			Light Preload	Slight Clearance
			High Grade	Standard Grade
No Surface Treatment Stainless Steel [SUS440C Equivalent] (56HRC or more)	Standard length (Selectable)	1	SSELBWM	SSELBWMZ	9 12 14 16	Blank: Standard G: Grease G L: Grease L Y: Grease Y H: Grease H
	Standard length (Selectable)	2	SSEL2BWM	SSEL2BWMZ
	1 mm increments (Dimension Configurable)	1	SSELBWML	SSELBWMLZ
	1 mm increments (Dimension Configurable)	2	SSEL2BWML	SSEL2BWMLZ
Low Temperature Black Chrome Plating Stainless Steel [SUS440C Equivalent] (56HRC or more)	Standard length (Selectable)	1	RSELBWM	―
	Standard length (Selectable)	2	RSEL2BWM	―
	1 mm increments (Dimension Configurable)	1	RSELBWML	―
	1 mm increments (Dimension Configurable)	2	RSEL2BWML	―

1If the desired rail length is not available in the standard length (selectable), please specify the length in 1 mm increments (dimension configurable).

[ ! ] Heat resistance temperature is -20 to 80°C.

[ NG ] Blocks and rails cannot be purchased separately.

Part Number Configuration

Example: [Rail Length Type] 1 mm increments, [Number of Blocks] 2, [Accuracy/Preload] Light Preload, High Grade, [Height] 12, [Grease] Standard Grease

Type	Height H	Grease	ー	Rail Length L	ー	Alterations
A	B	C
SSELBWM	12		ー	200			（SSELBWM12-200）
SSELBWML	12	G	ー	610	ー	MC-B4	（SSELBWML12G-610-MC-B4）
RSEL2BWML	12	G	ー	271	ー	MC	（RSEL2BWML12G-271-MC）

Drawing

H9·12·14	H16

[ ! ] For L Dimension Configurable Type, G dimensions differ from those shown in the table below.

[ NG ] Blocks and rails cannot be purchased separately.

■ L Dimension Unit: (mm)
Tolerance

L Dimension range	Tolerance
25 ≦ L ≦ 400	0 -0.8
25 ≦ L ≦ 400	0 -0.8
400 < L ≦ 1000	0 -1.0
400 < L ≦ 1000	0 -1.0

■H・W₂Dimensional Accuracy

Type	Accuracy Standards	Assembly Height (H)	Accuracy (μm)
			Precision Grade	High Grade		Standard Grade
				No Surface Treatment	Low Temperature Black Chrome Plating
				No Surface Treatment	Low Temperature Black Chrome Plating
Miniature Linear Guide	Height H Dimension Tolerance	6 to 20	±10	±20	+30 ー20	±20
	Pair Variation of Height H		7	15	15	40
	Width W₂ Dimension Tolerance		±15	±25	±25	±25
	Pair Variation of Width W₂		10	20	20	40

■ Dimension Tolerances
of Other Symbols

Dimension Range		Tolerance (mm)
Over	or Less	Tolerance (mm)
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

Compliant with JIS B 0405-1991
Class m (Medium Class)

[ ! ] The precision of low temperature black chrome plated product Miniature Linear Guides is as shown above.
The sliding resistance is higher than that of Standard Type. Approx. 1.2 N or lower.

Specification Table

Part Number			L 2	Block Dimensions								Rail Dimensions
Type		H		W	L₁	B	C	S	L₂	K	Cb	W₁	W₂	H₁	Ca	Counterbored Hole	F	G 3
1 Block	2 blocks	H		W	L₁	B	C	S	L₂	K	Cb	W₁	W₂	H₁	Ca	d₁ × d₂ × h	F	G 3
SSELBWM SSELBWML SSELBWMZ SSELBWMLZ RSELBWM RSELBWML	SSEL2BWM SSEL2BWML SSEL2BWMZ SSEL2BWMLZ RSEL2BWM RSEL2BWML	9	80 to 380 (110)	36	43.5	29	19	M4	32.5	7	0.3	14	11	5.2	0.5	3.5 × 6 × 3.2	30	10
		12	80 to 620 (110)	40	51.6	33	24	M4	40.6	9	0.3	18	11	7.5	0.5	3.5 × 6 × 4.5	30	10
		14	110 to 990 (150)	51	61.6	44	28	M4	47.4	11	0.5	24	13.5	8	0.5	4.5 × 8 × 4.5	40	15
		16	110 to 990 (190)	74	74.9	65	35	M5	59.9	13	0.5	42	16	9.5	0.5	4.5 × 8 × 4.5	40	15

2Dimensions in ( ) are for 2 Block Type.

3For L Dimension Configurable Types, both ends of the rail are evenly cut. G dim. resulting from this cutting process will differ from those indicated on the above table.

!Correctly match the datum planes (the side with the straight grooves) of both the rail and block.

Standard Rail Length (Selectable) List

The table below lists the standard rail lengths for each size. Please select the rail length from here.
Lengths not listed in the table below can be custom specified in 1 mm increments.

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

! The dimensions in ( ) are not available for the standard 2-block type.

Basic Load Rating, Allowable Static Moment, Mass, Friction Resistance (Required Thrust), Sliding Resistance (Seal Resistance)

kgf = N × 0.101972

Height (H)	Basic Load Rating 4		Allowable Static Moment						Mass
	C (Dynamic) kN	Co (Static) kN	Block 1 pc.			Block 2 pcs. in close contact 5			Block kg	Guide Rail kg/m
	C (Dynamic) kN	Co (Static) kN	M_A N⋅m	M_B N⋅m	M_C N⋅m	M_A N⋅m	M_B N⋅m	M_C N⋅m	Block kg	Guide Rail kg/m
9	1.7	4.0	12.1	12.1	28.8	32.2	32.2	57.6	0.05	0.50
12	2.6	5.3	20.2	20.2	49.5	62.0	62.0	99.0	0.09	0.96
14	3.9	8.5	38.6	38.6	104.6	103.8	103.8	209.2	0.16	1.40
16	7.2	14.3	86.0	86.0	305.2	228.3	228.3	610.4	0.3	2.95

4The basic load rating is the same for all four directions (radial, reverse-radial, and lateral directions) relating to blocks. Can be used in any orientation.

5The allowable static moment when two blocks are in close contact is not a guaranteed value but a reference value.

The guideline for the allowable load and allowable moment of the linear guide is the value obtained by dividing each value (above table) by the static safety factor fs (below table).
Example: Allowable load (kN) for H12 under normal driving conditions: 5.3/2 = 2.65 (Approx. 271 kg)
The actual friction resistance (required thrust) when using a linear guide will vary depending on the load and other factors.

Static Safety Factor (Lower Limits of fs)

Condition of Use	Lower Limits of fs
For normal operating condition	1 to 2
When smooth running performance is required	2 to 4
When there is vibration or impact	3 to 5

Allowable Load (N) ≤ Co/fs
Allowable Moment (N⋅m) ≤ (M_A, M_B, M_C)/fs

fs: Static Safety Factor Co: Basic Static Load Rating
M_A, M_B, M_C: Allowable Static Moment (N⋅m)

Friction Resistance (Required Thrust Force)

・In linear guides, the rolling elements perform rolling motion, resulting in lower frictional resistance compared to sliding guides.
However, this can vary depending on the applied load, speed, and the characteristics of the lubricant.
Especially when a moment load is applied or preload is applied, friction resistance increases. Although seal resistance varies depending on the seal lip press-fit allowance
and the condition of the lubricant, it is not proportional to load and always shows a constant value. Friction resistance is obtained by the following formula.

F＝μ・w＋f

F: Friction 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 to 0.006
Linear Guides for Medium Load	0.002 to 0.003

Calculation Example

Condition: Miniature linear guide (standard rail) assembly height (H): 10: Sliding resistance (seal resistance): 0.5 (N)
Dynamic Friction Coefficient (μ): 0.005
Load: 150 (N)

F (Friction Resistance)＝0.005×150+0.5＝1.25(N)

Mounting and Handling
■ Datum Plane and Mounting Direction

Datum plane has the Datum Plane Mark (groove) on the block and rail (Fig. A). Be sure to match the datum planes for use.
The mounting direction shown in Fig. B is acceptable. All the basic load ratings are same.

Fig. Ａ

Fig. Ｂ

■ Precautions for Use
[ ! ] Blocks are equipped with a retainer to prevent balls from derailing (wires).
[ ! ] Radial clearances and accuracies are not guaranteed if the blocks and rails are interchanged from the original set combinations.
[ ! ] Straight grooves are provided on datum planes. Be sure to match the datum planes for use.
[ ! ] Rails cannot be connected end to end.
[ ! ] The accuracy of Linear Guide is guaranteed after mounting the rail (after it is fastened with screws on the rail and pushing it onto the datum plane).
Minor bending of the rail will be adjusted by being secured and will not affect the performance.

■ About Grease

Filled with a standard grease: lithium soap based grease (Multemp Grease PS2 by KYODO YUSHI) before shipment.
Greasing with a different brand of grease is not recommended. Please use the same brand of grease.
Apply grease directly to the rail. After applying, move the block to let the grease absorb.

■ Standard Grease Fitting Position

The miniature type does not come with a grease fitting or greasing hole.

Alterations

Code

Alterations

Specifications

Notes

Change rail counterbore holes to tapped holes

·Changes the guide rail mounting holes from counterbored holes to tapped holes.

! Not applicable for H dim. 9 ≥ 291, H dim. 12 ≥ 291, H dim. 14 ≥ 471 or H dim.16 ≥ 671
! See the table below for the tapped hole dimensions after change.

Dimension H	Tapped Hole Dimensions
9	M4
12	M4
14	M5
16	M5

LLC
RLC

LLC: Left End Cut
RLC: Right End Cut

·Cuts rail ends.
·Rails are cut with the engraved side as front (datum plane as back).
(as shown in the image on the left)
·Please refer to the table below for the length of the rail to be cut.

Dimension H	L Cut	N
9	5	5
12
14		10
16

!The overall length will be shortened by the amount of cutting.
Example: The L dimension of SSELBWM12-80-LLC is 75 mm.

App. Example

- Installation Examples -
Conventional Type		Wide Block Type

		* One size larger screws 　Enhanced assembly and fastening strength.

More Information

■Precautions for Use
[ ! ]Blocks are equipped with retainers (wire) to prevent balls from falling out. Refer to >>P.501
[ ! ]Radial clearances and accuracies are not guaranteed if the blocks and rails in the Light Preload Type are interchanged from the original set combinations.
[ ! ]Straight grooves are provided on datum planes. Be sure to match the datum lines when using.
[ ! ]Rails cannot be connected to be extended.
[ ! ]Running parallelism is the value measured after the rail is mounted.
■Others
- For G dimensions of L Dimension Configurable Type, refer to >>P.507
- Lithium soap based grease (Multemp Grease PS2 by Kyodo Yushi Co., Ltd. ) is filled.