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Idlers for Flat Belts-Straight Type/Crosspiece Groove Straight Type/Crowned Type/Width L110-500 (Part Numbers)

Idlers for Flat Belts-Straight Type/Crosspiece Groove Straight Type/Crowned Type/Width L110-500

MISUMI

MISUMI

· Product type: Idlers.
· Idlers type: Bearing Built-in.
· Shape of Idlers: Straight type, Crosspiece Groove Straight Type and Crowned Type.
· Shaft Type : Bearing on Each End (2-Bearing in Total)
· The product code series Straight type: ROFAWC, ROFMWC and ROFSWC
· The product code series Crowned Type: ROFAWT, ROFMWT and ROFSWT
· The product code series Crosspiece Groove Straight: ROFAWM, ROFMWM and ROFSWM
· Outer Diameter: 30-80 mm.
· Shaft (Bore) Diameter: 8-35 mm.
· Length: 110-510 mm.
· Idler Engineering Plastic Roller, Steel Roller (TC-RP, TC-RU)

(i)Caution

  • [Specification Change] Internal bearing material will be changed to SUJ2 equivalent starting in July 2025. Please check here for part numbers with specification changes. Products before and after the change may be mixed in the same shipment, but there are no problems with use.
  • Please check the content on our website as the PDF does not contain the most up-to-date information.

PDFP.1-1368-2015

Part Number

Configured Part Number is shown.

Straight
ROFAWC·ROFMWC·ROFSWC
ROFAWCS·ROFSWCS Crowned
ROFAWT·ROFMWT·ROFSWT
ROFAWTS·ROFSWTS Crosspiece Groove Straight
ROFAWM·ROFMWM·ROFSWM
ROFAWMS·ROFSWMS Crosspiece Groove Part [ ! ]X ≥ Y
*1 Since the drawing surface of pipe is unpolished, the Inner Dia. d1 is misshapen to some extent.
[!] For Crosspiece Groove Part Dimensions, see "Pulley, Idler Relief Dimensions."
[!] The bearings are removable. Temporarily held with tape for shipping.
TypeRollerBearing (Track Ring / Rolling Element)
StraightCrownedCrosspiece Groove Straight[M] Material[S] Surface Treatment[M] Material
ROFAWCROFAWTROFAWMAluminum AlloyClear AnodizeSUJ2
ROFAWCSROFAWTSROFAWMSSUS440C Equivalent
ROFMWCROFMWTROFMWMSTKM13AElectroless Nickel PlatingSUJ2
ROFSWCROFSWTROFSWMSUS304—
ROFSWCSROFSWTSROFSWMSSUS440C Equivalent
Track surface / roller material: SUJ2
*SUJ2 equivalent materials are used in some products. Please check here for part numbers subject to specification changes.

Specification Table

 Part Number—d—L—H—X—Y—Z
(Straight)ROFAWC40—8—L200        
(Crowned)ROFAWT30—10—L350—H0.5      
(Crosspiece Groove Straight)ROFSWM50—20—L250  —X14.0—Y11.8—Z5.0
Type
D
d
1 mm Increments
H
Only Crosspiece Groove Straight only
d1
Bearing Dimension
L
Crowned only
0.1 mm Increments
Aluminum
Steel
Stainless Steel
No.
D1
B
 
X
Y
Z
Alloy
(STKM13A)
(SUS304)
Straight
30
8
110 to 510
 
7.0 to 15.0
5.0 to 12.0
2.0 to 4.5
15
—
—
698ZZ
19
6
ROFAWC
8 A*
 
—
15.8
18
608ZZ
22
7
ROFAWCS
10
 
15
6900ZZ
22
6
ROFMWC
12
 
6901ZZ
24
ROFSWC
35
10
 
4.0 to 6.0
17
18.1
18
6900ZZ
22
6
ROFSWCS
12
0.3
6901ZZ
24
 
15
 
6902ZZ
28
7
Crowned
40
8
 
4.0 to 7.0
17
18.7
20
628ZZ
24
8
ROFAWT
10
 
6000ZZ
26
ROFAWTS
12
0.5
6901ZZ
24
6
ROFMWT
15
 
6902ZZ
28
7
ROFSWT
20
 
4.0 to 6.0
22
22.7
22
6804ZZ
32
ROFSWTS
50
10
 
4.0 to 7.0
17
24
22
6200ZZ
30
9
 
12
0.8
22
6001ZZ
28
8
Crosspiece Groove Straight
15
 
17
6902ZZ
28
7
ROFAWM
20
 
22
6804ZZ
32
ROFAWMS
25
 
27
30
28
6905ZZ
42
9
ROFMWM
(60)
12
 
22
—
—
6201ZZ
32
10
ROFSWM
15
 
6002ZZ
32
9
ROFSWMS
20
 
6904ZZ
37
 
25
 
32
6905ZZ
42
 
30
 
6906ZZ
47
 
(80)
25
 
41
—
—
6205ZZ
52
15
 
30
 
6006ZZ
55
13
 
35
 
6907ZZ
55
10
[!] * When D = 30 and d = 8 A, only available in Steel or Stainless Steel. [!] D = (60) or (80) is applicable only for the Aluminum Alloy material. [!] For Crosspiece Groove Straight with D = 30 or 35, only Aluminum Alloy is available as the material.
[!] The bearings are filled with grease.
Unspecified Dimension Tolerance (Excluding d1)
Dimension RangeTolerance
(mm)
OverOr Less
0.53±0.1
36±0.1
630±0.2
30120±0.3
[!] Compliant with JIS B 0405 m (Medium Class).
d Hole Tolerance
d
(mm)		I.D. Tolerance
(mm)
OverOr Less
0.62.5   0
－0.008
2.510   0
－0.008
1018   0
－0.008
1830   0
－0.010
[!] Compliant with JIS B 1514 Class 0.
General Standard for Shaft Fits (Approx.)
Radial Bearing (Class 0, 6X, 6)
ConditionBall BearingShaft
Tolerances
Shaft Dia. (mm)
Load CharacteristicsLoad Size, etc.OverOr Less
Inner Ring
Rotary Load

Non-directional Load
Non-directional Load		Light Load
Fluctuating Load		—18h5
18100js6
100200k6
Normal Load-18js5
18100k5
100140m5
Inner Ring
Static Load		Inner ring needs to move easily on shaftTotal Shaft Diameterg6
Inner ring does not need to move easily on shaftTotal Shaft Diameterh6
[!] Compliant with JIS B 1566 (2015) Annex B (Reference).
[!] Load Characteristics
·Inner Ring Rotary Load: The load position on the inner ring changes.
·Inner Ring Static Load: The load position on the inner ring does not change.
·Non-directional Load: Load position is uncertain.

Cautions/Prohibitions

  • Since the drawing surface of pipe is unpolished, the Inner Dia. d1 is misshapen to some extent.
  • The bearings of this product are removable. Please replace the bearing according to the material and size of the bearing used in this product.
  • For rust prevention, electroless nickel plating products or SUS304 products are recommend.
  • T dimension tolerance of belt groove is ±0.2 mm. Check the width tolerance of the flat belt and select the pulley.

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.
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Part Number
Part NumberMinimum order quantityVolume DiscountDays to ShipRoHSShape Outer Dia. D
(Ø) 		Material Shaft (Bore) Dia. d
(mm) 		Surface Treatment H
(mm) 		L
(mm) 		X
(mm) 		Y
(mm) 		Z
(mm)

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Basic Information

With or w/o Flange No Flange Length L(mm) ~300 / ~500 Type Idlers (Bearing Built-in)
Shaft Type 1-Bearing on Each End (2-Bearing in Total) Surface Urethane Urethane Not Provided

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Specification/Dimensions

  • Shape

    • Straight
    • Crowned
    • Crosspiece Groove

    Clear

  • Outer Dia. D(Ø)

    • 30
    • 35
    • 40
    • 50
    • 60
    • 80

    Clear

  • Material

    • Steel
      • STKM13A
    • Aluminum
      • Aluminum Alloy
    • SUS304

    Clear

  • Shaft (Bore) Dia. d(mm)

    • 8
    • 8A
    • 10
    • 12
    • 15
    • 20
    • 25
    • 30
    • 35

    Clear

  • Surface Treatment

    • Not Provided
    • Electroless Nickel Plating
    • Clear Anodize

    Clear

  • H(mm)

    • 0.3
    • 0.5
    • 0.8

    Clear

  • L(mm)

     [100-510/10mm Unit(s)][110-510/1mm Unit(s)]

    Clear

  • X(mm)

     [7-15/0.1mm Unit(s)]

    Clear

  • Y(mm)

     [5-12/0.1mm Unit(s)]

    Clear

  • Z(mm)

     [2-7/0.1mm Unit(s)]

    Clear

  • type

    • ROFAWC
    • ROFAWM
    • ROFAWT
    • ROFMWC
    • ROFMWM
    • ROFMWT
    • ROFSWC
    • ROFSWM
    • ROFSWT

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 7 Day(s) or Less
    • 9 Day(s) or Less

    Clear

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