Miniature Linear Guides - Extra Long Blocks, Light Preload / Slight Clearance

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 - Extra Long Blocks, Light Preload / Slight Clearance
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.): 40 and 590
● Assembly Height (mm.): 8, 10, 13 and 16
● Block Type : Standard / Extra Long Block with Dowel Holes
● 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		Lubrication Unit (MX) Equipped / Not Equipped B	Height (H) C	Grease D 2
			Light Preload	Slight Clearance
			High Grade	Standard Grade
No Surface Treatment Stainless Steel [SUS440C Equivalent] (56HRC or more)	Standard length (Selectable)	1	SSECB	SSECBZ	Blank: None -MX: Provided	8 10 13 16	Blank: Standard G: Grease G L: Grease L Y: Grease Y H: Grease H
	Standard length (Selectable)	2	SSEC2B	SSEC2BZ
	1 mm increments (Dimension Configurable)	1	SSECBL	SSECBLZ
	1 mm increments (Dimension Configurable)	2	SSEC2BL	SSEC2BLZ
Low Temperature Black Chrome Plating Stainless Steel [SUS440C Equivalent] (56HRC or more)	Standard length (Selectable)	1	RSECB	-	Blank: None
	Standard length (Selectable)	2	RSEC2B
	1 mm increments (Dimension Configurable)	1	RSECBL
	1 mm increments (Dimension Configurable)	2	RSEC2BL

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

2*Only standard grease is available for the MX (with lubrication unit) type.

[ ! ] Heat resistant 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] 1, [Accuracy/Preload] Light Preload, High Grade, [MX] Provided, [Height] 10, [Grease] Standard Grease

Type	Height H	Grease	-	Rail Length L	-	Alterations
A B	C	D
SSECB	10		-	275			（SSECB10-275）
SSECBL-MX	10		-	271	-	MC	（SSECBL-MX10-271-MC）
RSEC2BL	10	G	-	256	-	MC	（RSEC2BL10G-256-MC）

Drawing

Miniature Linear Guide - Extra Long Block, Light Preload: Related Image

[ ! ] For L Dimension Configurable Type, G dimensions differ from those shown in the table below.
[ ! ] 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 3	Block Dimensions								Rail Dimensions
Type		MX	H		W	L₁	B	C	S×ℓ	L₂	K	Cb	W₁	W₂	H₁	Ca	Counterbored Hole	F	G 4
1 Block	2 Blocks	MX	H		W	L₁	B	C	S×ℓ	L₂	K	Cb	W₁	W₂	H₁	Ca	d₁×d₂×h	F	G 4
SSECB SSECBL SSECBZ SSECBLZ RSECB RSECBL	SSEC2B SSEC2BL SSEC2BZ SSEC2BLZ RSEC2B RSEC2BL	-	8	40 to 310 (85)	17	37.5	12	20	M2×2.5	27.5	6.5	0.3	7	5	4.7	0.3	2.4×4.2×2.3	15	5
		Blank: None -MX: Provided	10	55 to 635 (115)	20	49.6	15	26	M3×3	38.6	7.8	0.3	9	5.5	5.5	0.3	3.5×6×3.5	20	7.5
			13	70 to 970 (120)	27	54.8	20	30	M3×3.5	40.8	10	0.5	12	7.5	7.5	0.5	3.5×6×4.5	25	10
			16	110 to 990 (150)	32	70.3	25	40	M3×4	55.3	12	0.5	15	8.5	9.5	0.5	3.5×6×4.5	40	15

3Dimensions in ( ) are for 2 Block Type.

4For 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.

!H8 comes with cap bolts (M2 × 6).

!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)
8	40	55	70	85	100	115	130	145	160	175	190	205	220	235	250	265	280	295	310
10	55	75	95	115	135	155	175	195	215	235	255	275	295	315	335	355	375	395	415	435	455	475	495	515	535	555	575	595	615	635
13	70	95	120	145	170	195	220	245	270	295	320	345	370	395	420	445	470	495	520	545	570	595	620	645	670	695	720	745	770	795	820	845	870	895	920	945	970
16	110	150	190	230	270	310	350	390	430	470	510	550	590	630	670	710	750	790	830	870	910	950	990

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

kgf = N × 0.101972

Height (H)	Basic Load Rating 5		Allowable Static Moment			Mass
Height (H)	C (Dynamic) kN	Co (Static) kN	M_A N⋅m	M_B N⋅m	M_C N⋅m	Block kg	Guide Rail kg/m
8	1.5	3.3	10.1	10.1	12.4	0.02	0.19
10	2.5	5.0	18.8	18.8	23.7	0.04	0.31
13	3.6	7.6	34.0	34.0	47.3	0.07	0.61
16	6.9	13.5	80.7	80.7	104.3	0.12	1.02

5The 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.

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 H10 under normal driving conditions: 5.0/2 = 2.5 (Approx. 255 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.
The standard grease when selecting the lubrication unit MX is (ENEOS Corporation Tufflix MP2).
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.

■ Grease fitting position when selecting lubrication unit MX

The miniature type does not come with a grease fitting or greasing hole.
When lubrication unit MX is selected: When the datum plane is in front, the grease fitting is attached in the direction shown in the diagram below.

■ Lubrication Unit

Advantages of Lubrication Unit MX:
The oil-impregnated porous core part has been built into the product.
Provides long term maintenance-free operation.
Reduces maintenance cost.
Most suitable where the design does not allow lubrication.

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. 8 ≥ 131, H dim. 10 ≥ 276, H dim. 13 ≥ 471 or H dim.16 ≥ 671
! See the table below for the tapped hole dimensions after change.

Dimension H	Tapped Hole Dimensions
8	M3
10	M4
13	M4
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
10	2.5	5
13	5
16	10

!The overall length will be shortened by the amount of cutting.
Example: The L dimension of SSECB13-95-LLC is 90 mm.
!Applicable only to Selectable Type (standard rail length).
!Not applicable to H8.

Specifications/Overview

kgf = N × 0.101972

H	Basic Load Rating		Allowable Static Moment			Mass
H	C (Dynamic) kN	Co (Static) kN	M_A N⋅m	M_B N⋅m	M_C N⋅m	Block kg	Guide Rail kg/m
8	1.5	3.3	10.1	10.1	12.4	0.02	0.19
10	2.5	5.0	18.8	18.8	23.7	0.04	0.31
13	3.6	7.6	34.0	34.0	47.3	0.07	0.61
16	6.9	13.5	80.7	80.7	104.3	0.12	1.02

■Preload and Accuracy Standards

Unit: µm

Specifications	Light Preload High Grade	Slight Clearance, Standard Grade
Radial Clearance	−3 to 0	0 to +15
Height H Tolerance	±20	±20
Pair Variation of Height H	15	40
Width W₂ Tolerance	±25	±25
Pair Variation of Width W₂	20	40

[ ! ]Slight Clearance Type has a clearance (gap) between the rails and the blocks.
If precision / rigidity is required, select Light Preload Type.

■Lubrication Unit

Same block size as the existing product.
The oil-impregnated porous core part has been built into the product.

● Advantages of Lubrication Unit MX:
Provides long term maintenance-free operation.
Reduces maintenance cost.

■Table of Comparison with Standard Blocks
·Shorter block length than that of Standard 2-Block Type
·Basic load rating C (dynamic) is enhanced up to 192% compared to 1 Block Type. H dimensions can be reduced by using long blocks.
·Basic load rating Co (static) is equivalent or higher compared to 1 Block / 2 Block Type. 2 Block Type can make guide block length more compact.

H	Block Overall Length (L1)					Basic Load Rating C (Dynamic) kN					Basic Load Rating Co (Static) kN
	Standard 1 Block	Standard 2 blocks	Extra Long 1 Block			Standard 1 Block	Standard 2 blocks	Extra Long 1 Block			Standard 1 Block	Standard 2 blocks	Extra Long 1 Block
	Standard 1 Block	Standard 2 blocks		Compared to Standard 1 Block	Compared to Standard 2 blocks	Standard 1 Block	Standard 2 blocks		Compared to Standard 1 Block	Compared to Standard 2 blocks	Standard 1 Block	Standard 2 blocks		Compared to Standard 1 Block	Compared to Standard 2 blocks
8	23.6	47.2	37.5	+13.9	－9.7	0.9	1.8	1.5	167%	83%	1.5	3	3.3	220%	110%
10	30	60	49.6	+19.6	－10.4	1.5	3	2.5	167%	83%	2.5	5	5	200%	100%
13	33.9	67.8	54.8	+20.9	－13	2.2	4.4	3.6	164%	82%	3.3	6.6	7.6	230%	115%
16	42.4	84.8	70.3	+27.9	－14.5	3.6	7.2	6.9	192%	96%	5.4	10.8	13.5	250%	125%

■ Precautions for Use
[ ! ]Blocks are equipped with retainers (wires) to prevent the balls from derailing.
[ ! ]Radial clearances and accuracy 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 fastening 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.
■ Accessory
·H8 comes with cap bolts (M2 × 6).

■Others
·Filled with lithium soap based grease (Multemp Grease PS2 by KYODO YUSHI Co., Ltd.).