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Linear Guides for Heavy Load - Dust Resistant - With Double Seals / Metal Scrapers, Normal Clearance (Part Numbers)

Linear Guides for Heavy Load - Dust Resistant - With Double Seals / Metal Scrapers, Normal Clearance

MISUMI

MISUMI

Linear Guides for Heavy Load - Dust Resistant - With Double Seals / Metal Scrapers, Normal 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.): 160 and 1960
● Assembly Height (mm.): 24, 28, and 33
● Block Type : Standard Block or Wide Block
● Material: Carbon Steel 58HRC
[Application]
It is used in a variety of machines such as CNC machines, 3D printers, measuring instruments, and so on.

(i)Caution

  • Delivery times for some of our products may be delayed as national government authorities have imposed limit of capacity at our production sites.

PDFP.1-605-2014

Part Number

Configured Part Number is shown.

Type (Part Number)

Material
(Hardness)
Block TypeRail Length
Type
1		Number of Blocks
2		Preload/Accuracy ALubrication Unit (MX)
Equipped / Not EquippedB		Height (H)
C		Grease D
3
Normal Clearance
Standard Grade
Double-SealedWith Metal Scrapers
Carbon Steel
[Alloy Steel including SCM]
(58HRC or more)		Standard BlockStandard length
(Selectable)		1SXRDSXRKBlank: None
-MX: Provided		24
28
33		Blank: Standard
G: Grease G
L: Grease L
Y: Grease Y
H: Grease H
2SX2RDSX2RK
1 mm increments
(Dimension Configurable)		1SXRDLSXRKL
2SX2RDLSX2RKL
Wide Block
Through Hole		Standard length
(Selectable)		1SXWDSXWK
2SX2WDSX2WK
1 mm increments
(Dimension Configurable)		1SXWDLSXWKL
2SX2WDLSX2WKL

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

2If a 3- to 4-block product is desired, please select a part number for a 1-block product and specify "B3 (3 blocks)" or "B4 (4 blocks)" for alterations.

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

!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, [Type] Standard Block, Double-Sealed, [MX] Provided, [Height] 24, [Grease] Standard Grease

Type
 
Height H
 
Grease
ー
Rail Length L
ーAlterations 
A B C D     
SXRD
 24  ー640  
（SXRD24-640）
SX2RDL-MX
 24  ー661ー
TMS
（SX2RDL-MX24-661-TMS）
SXWDL
 24 Gー700ー
B4
（SXWDL24G-701-B4）

Drawing

■Dimension Diagram of Blocks with MX (Lubrication Units) Standard Block Wide Block Linear Guide for Heavy Load - Dust Resistant, With Double Seals / Metal Scrapers, Normal Clearance: Related Image
[ ! ]For L Dimension Configurable Type, G dimensions differ from those shown in the table below.
 
■H・W2 Dimensional Accuracy
TypeStandard AccuracyAssembly Height (H)Accuracy (µm)
Standard Grade
Linear Guides
for Medium Load/
Heavy Load		Normal ClearanceHeight H
Dimension Tolerance		24 to 33
±100
Pair Variation
of Height H
20
Width W2
Dimension Tolerance
±100
Pair Variation
of Width W2		24・28
20
33
30
■Dimension Tolerances of Other Symbols
Dimension RangeTolerance
(mm)
Overor Less
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)

[ NG ]Blocks and rails cannot be purchased separately.

Specification Table

Block
Type		HL
4		Block DimensionsRail Dimensions
WL15BCS × ℓL2KTCbGrease FittingH1W1W2CaCounterbored HoleFG
6
StandardMXTapped HoleThrough HoleMounting HoleET1d1 × d2 × h
Standard
Block		24160 to 1480
(220)		3462
(62.2)		71.6
(71.8)		2626M4 × 7—412070.85M5 × P0.86512.5159.50.53.5 × 6 × 4.56020
28220 to 19604273.4
(72.6)		83
(82.2)		3232M5 × 8—47.622.57.51.0M6 × P0.7513615.520110.66 × 9.5 × 8.56020
33220 to 1960
(280)		4890
(89.4)		99.6
(99)		3535M6 × 9—6126.581.0M6 × P0.75136.8182312.50.87 × 11 × 96020
Wide
Block		24160 to 1480
(220)		5262
(62.2)		71.6
(71.8)		4126—4.5
(Through)		412070.5M5 × P0.86512.51518.50.53.5 × 6 × 4.56020
28220 to 19605973.4
(72.6)		83
(82.2)		4932—5.5
(Through)		47.622.591.0M6 × P0.7513615.52019.50.66 × 9.5 × 8.56020
33220 to 1960
(280)		7390
(89.4)		99.6
(99)		6035—7
(Through)		6126.5101.0M6 × P0.75136.81823250.87 × 11 × 96020

4For L, dimensions in ( ) are the minimum lengths for 2 Block Type.

5L1 Dimension: Dimensions in ( ) are for Metal Scraper Type.

6For 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.

!Grease Fitting: Straight type for H24 and Angled Type for H28 and above.

!Grease fittings are screw-in types, and thus, can be repositioned.

!Correctly match the datum planes (the side with the straight grooves) of both the rail and block. For details, see "Mounting and Handling" below.

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
(H)		Rail Length
(L)
24(160)22028034040046052058064070076082088094010001120124013601480   
28220280340400460520580640700760820880940100011201240136014801600172018401960
33(220)280340400460520580640700760820880940100011201240136014801600172018401960

! 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 7Allowable Static MomentMass
C (Dynamic)
kN		Co (Static)
kN		Block 1 pc.Block 2 pcs. in close contact 8Block kgGuide Rail
kg/m
MA
N⋅m		MB
N⋅m		MC
N⋅m		MA
N⋅m		MB
N⋅m		MC
N⋅m		Double-SealedWith Metal Scrapers
StandardWideStandardWide
248.614.269.069.098.0184.5184.5196.00.210.260.210.261.5
2812.521.3155.0155.0232.0390.2390.2464.00.320.370.320.372.4
3320.234.5275.0275.0393.0873.5873.5786.00.480.630.490.643.4

7The 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.

8The 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 H24 under normal driving conditions: 8.23/2 = 4.12 (Approx. 420 kg)
  • The frictional resistance (required thrust) when actually using a linear guide varies depending on factors such as the applied load.

Static Safety Factor (Lower Limits of fs)

Condition of UseLower Limits of fs
For normal operating condition1 to 2
When smooth running performance is required2 to 4
When there is vibration or impact3 to 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: Allowable Static Moment (N⋅m)

[Figure]Allowable Static Moment
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.

 

F＝μ・w＋f

　
F: Friction Resistance (N)
μ: Dynamic Friction Coefficient
w: Load (N)
f: Sliding Resistance (Seal Resistance)
Dynamic Friction Coefficient
TypeDynamic Friction Coefficient (μ)
Miniature Linear Guide0.004 to 0.006
Linear Guides for Medium Load0.002 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

  • Although the retainer (wire) prevents the balls from derailing, care must be taken when attaching and removing the block.
  • Radial clearances and accuracies are not guaranteed if the blocks and rails are interchanged from the original set combinations.
  • Rails cannot be connected end to end.
  • The accuracy of Linear Guides 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.

■About Grease

  • Filled with a standard grease: lithium soap based grease (Alvania Grease S2 by Showa Shell Sekiyu K.K) 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.
  • Grease Fitting: Straight Type for H24 and Angled Type for H28 and H33.
  • Grease fittings are screw-in types, and thus, can be repositioned.

■Standard Grease Fitting Position

  • 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:
　Provides long term maintenance-free operation.
　Reduces maintenance cost.
　Most suitable where the design does not allow lubrication.
■Double-Sealed
● The double-seal scheme with two layers of side seals enhances the sealing effect and prevents intrusion of foreign substances into the block.
● Can be used where dust and machining chips exist.
[ ! ] Sliding resistance of Double-Sealed Type is higher than that of Standard Type.
■With Metal Scrapers
● Larger foreign substances adhered to the rail can be removed by attaching metal scrapers on the external side of the side seals.
● Can be used in areas with high temperature dusts such as weld spatter. 　　

Alterations

CodeAlterationsSpecificationsNotes
TMS
TMC		TMS: Tapped Hole Machining + Stopper Plate
TMC: Tapped Hole Machining Only
·Adds tapped holes on both rail ends to prevent blocks from falling off.

·M3 × P0.5 Depth 5 Tapped Holes
·2 block stopper plates are included.		 
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 HL CutN
241010
28
33
!The overall length will be shortened by the amount of cutting.
Example: The L dimension of SXRD24-880-LLC is 870 mm.
!Applicable only to Selectable Type (standard rail length).
WCParallel Use of 2 Rails
·Please specify in parallel use of 2 rails.
·Pair variation of Height H between 2 rails is set within 20 µm.
·Rails are shipped in pairs.		!Please order in even numbers. (Number of pairs cannot be specified)
!Not applicable to High Grade Type.
B3
B4		B3: Additional Block (Total 3 pcs.)
B4: Additional Block (Total 4 pcs.)

3-Block Specifications

4-Block Specifications

·It will be shipped with 3 (4) blocks installed.
·There is a minimum length limit for the L dimension (rail length).
 Please refer to the table below "Shortest Selectable Rail Lengths for B3/B4."		!Not applicable to High Grade Type.
!Please specify the part number for one block.
(× SX2RD24-880-B4)
■Shortest Selectable Rail Lengths for B3/B4
HB3 (3-block)B4 (4 blocks)
24340400
28400460
33400520

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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Part Number
SXWK-MX33-[220,​280,​340,​400,​460,​520,​580,​640,​700,​760,​820,​880,​940,​1000,​1120,​1240,​1360,​1480,​1600,​1720,​1840,​1960]
SXWKL24-[161-1479/1]
SXWKL24G-[161-1479/1]
SXWKL24L-[161-1479/1]
SXWKL28-[221-1959/1]
SXWKL28G-[221-1959/1]
SXWKL28L-[221-1959/1]
SXWKL33-[221-1959/1]
SXWKL33G-[221-1959/1]
SXWKL33L-[221-1959/1]
SXWKL-MX24-[161-1479/1]
SXWKL-MX28-[221-1959/1]
SXWKL-MX33-[221-1959/1]
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSRail Length L
(mm) 		Block Type
(mm) 		Rail Width W1
(mm) 		Assembly Height H
(mm) 		Nominal Part Number No. of Blocks
(mm) 		Basic Load Rating: Dynamic Load
(N) 		Basic Load Rating: Static Load
(R) 		Allowable Static Moment MA
(θ) 		Allowable Static Moment MB
(N) 		Allowable Static Moment MC
(N) 		Lubrication Type L Dimension Type Seal Type

-

1 Piece(s) 8 Day(s) 10220 ～ 1960[Wide] Wide Block23332512020034500275275393Lubrication UnitSelectable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10161 ～ 1479[Wide] Wide Block1524151860014200696998Filled with Lithium soap based greaseConfigurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10161 ～ 1479[Wide] Wide Block1524151860014200696998Low Dust Generation Grease (G Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10161 ～ 1479[Wide] Wide Block1524151860014200696998Heat Resistant Grease (L Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block20282011250021300155155232Filled with Lithium soap based greaseConfigurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block20282011250021300155155232Low Dust Generation Grease (G Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block20282011250021300155155232Heat Resistant Grease (L Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block23332512020034500275275393Filled with Lithium soap based greaseConfigurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block23332512020034500275275393Low Dust Generation Grease (G Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block23332512020034500275275393Heat Resistant Grease (L Type)Configurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10161 ～ 1479[Wide] Wide Block1524151860014200696998Lubrication UnitConfigurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block20282011250021300155155232Lubrication UnitConfigurable TypeMetal Scraper

-

1 Piece(s) 8 Day(s) 10221 ～ 1959[Wide] Wide Block23332512020034500275275393Lubrication UnitConfigurable TypeMetal Scraper

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More Information

Standard Block
Wide Block
■Precautions for Use
[ ! ]Blocks are equipped with retainers to prevent balls from derailing. Refer to >>P.501
[ ! ]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 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
- Filled with Lithium soap based grease (Alvania Grease S2 by Showa Shell Sekiyu K.K).
Grease Fittings: Straight type for H24 and angled type for H28 and H33.
 

Basic Information

Rail Type Standard Rail Set / Single Item Set Preload(N・m) Normal Clearance
Accuracy Standards(N・m) Standard Grade Material Carbon Steel Ball Arrangement Medium, Heavy Load Type
Retainer N/A Lubrication Type(mm) Lubrication Applied Rolling Element Ball
Surface Treatment none

Configure

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193 Part Numbers

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Specification/Dimensions

  • Rail Length L(mm)

    • 160
    • 220
    • 280
    • 340
    • 400
    • 460
    • 520
    • 580
    • 640
    • 700
    • 760
    • 820
    • 880
    • 940
    • 1000
    • 1120
    • 1240
    • 1360
    • 1480
    • 1600
    • 1720
    • 1840
    • 1960

     [161-1959/1mm Unit(s)]

    Clear

  • Block Type(mm)

    • Standard
      • Standard Block
    • Wide
      • Wide Block

    Clear

  • Rail Width W1(mm)

    • 15
    • 20
    • 23

    Clear

  • Assembly Height H(mm)

    • 24
    • 28
    • 33

    Clear

  • Nominal Part Number

    • 15
    • 20
    • 25

    Clear

  • No. of Blocks(mm)

    • 1
    • 2

    Clear

  • Lubrication Type

    • Filled with Lithium soap based grease
    • Heat Resistant Grease (L Type)
    • Low Dust Generation Grease (G Type)
    • Lubrication Unit

    Clear

  • L Dimension Type

    • Configurable Type
    • Selectable Type

    Clear

  • Seal Type

    • Double-Sealed
    • Metal Scraper

    Clear

  • type

    • SX2RD
    • SX2RD-MX
    • SX2RDL
    • SX2RDL-MX
    • SX2RK
    • SX2RK-MX
    • SX2RKL
    • SX2RKL-MX
    • SX2WD
    • SX2WD-MX
    • SX2WDL
    • SX2WDL-MX
    • SX2WK
    • SX2WK-MX
    • SX2WKL
    • SX2WKL-MX
    • SXRD
    • SXRD-MX
    • SXRDL
    • SXRDL-MX
    • SXRK
    • SXRK-MX
    • SXRKL
    • SXRKL-MX
    • SXWD
    • SXWD-MX
    • SXWDL
    • SXWDL-MX
    • SXWK
    • SXWK-MX
    • SXWKL
    • SXWKL-MX

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 8 Day(s) or Less

    Clear

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