[Notice] Japan & China Golden Week holidays will start from 29 April to 6 May 2026. Kindly expect longer response from suppliers and possible delivery delay due to high volume of shipments after holiday. Early order placement is recommended. More details
[Announcement] MISUMI Malaysia website new user interface. Clearer navigation, easy product search and more. Explore now! May contact us at (60) 3 7890 6399 for any inquiries.

How can we improve?

How can we improve?

Comments

Name (Optional)

E-mail Address (Optional)

Tel (Optional)

While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.
Customer Privacy Policy

Thank you for your cooperation.

While we are not able to respond directly to comments submitted in this form, the information will be reviewed for future improvement.
Please use the inquiry form.

Customer Privacy Policy

Flat Belt Idlers（Type：Pulleys）

11 items

: 30; 45; 60

Pulleys for Flat Belts (Width T=6 ~ 32) - Flanged, Crowned, Press-Fit Urethane

MISUMI

· Shaft of Pulleys: Flanged, Crowned, Press-Fit Urethane
· The series code of Flanged type: HBPG, HBPM, HBPA and HBPS.
· The series code of Crowned type: HBPCG, HBPCM, HBPCA and HBPCS.
· The series code of Press-Fit Urethane type: HBPUS.
· Shaft Type : Round Hole.
· Pulleys Body Material: S45C Equivalent, Aluminum Alloy and SUS304.
· Surface Treatment solution: Black Oxide, Electroless Nickel Plating, Clear Anodize and Urethane Shore A70.
· Outer Diameter: 15-100 mm.
· Shaft (Bore) Diameter: 5-40 mm.
· Width Thickness: 6-32 mm.
· VFF Engineering Plastic Flanged Idler

CAD ：

2D / 3D

Days to Ship: 7 Day(s) or more

"Same Day Ship Out" is available for item with 1 day
Economy Pulleys for Flat Belts-Crowned Type/Crosspiece Groove Straight Type/Width L110-510

MISUMI

· Product type : Pulleys.
· Shaft of Pulleys : Crowned and Crosspiece Groove Straight type.
· The series code of Crowned type: RBWAC and RBWWC.
· The series code of Crosspiece Groove type: RBWAM and RBWWM.
· Shaft Type : Round Hole.
· Pulleys Body Material: Aluminum Alloy.
· Press Fit Bushing Material: Aluminum Alloy.
· Surface Treatment solution: Clear Anodize (For only RBWWC and RBWWM type)
· Outer Diameter: 18-78 mm.
· Shaft (Bore) Diameter: 8-50 mm.
· Length: 110-510 mm.
· Economy Idlers for Flat Belts-Straight Type/ Crosspiece Groove Straight Type/ Crowned Type.

CAD ：

2D / 3D

Days to Ship: 7 Day(s) or more

"Same Day Ship Out" is available for item with 1 day
Pulleys for Flat Belts (Width L=25 ~ 100) - Crowned, Crosspiece Groove Straight

MISUMI

· The Pulleys for Flat Belts ROBAC, ROBACF, and ROBAM types are specific pulleys manufactured by MISUMI.
· Shaft of Pulleys : Crowned and Crosspiece Groove Straight type.
· The series code of Crowned type: ROBAC, ROBACF.
· The series code of Crosspiece Groove type: ROBAM.
· Shaft Type : Round Hole.
· Pulleys Body Material: Aluminum Alloy.
· Surface Treatment solution: Clear Anodize
· Outer Diameter: 15-80 mm.
· Shaft (Bore) Diameter: 8-35 mm.
· Length: 25-100 mm.
· Idlers for Flat Belts (Width L25-100) -Straight Type/Crosspiece Groove Straight Type/Crowned Type

CAD ：

2D / 3D

Days to Ship: 6 Day(s) or more

"Same Day Ship Out" is available for item with 1 day
Pulleys for Flat Belts with Urethane (Width L=25 ~ 100) - Crowned, Crosspiece Groove Straight

MISUMI

· Product type : Pulleys.
· Shaft of Pulleys : Crowned and Crosspiece Groove Straight type.
· The series code of Crowned type: RWCUN RWCUF RWMUN and RWMUF.
· The series code of Crosspiece Groove type: RWCGN RWCGF RWMGN and RWMGF.
· Shaft Type : Round Hole.
· Flange: Flange type and No Flange.
· Core Material: Aluminium A5052.
· Lining Material: Urethane (Natural Color)
· Urethane Hardness: Shore A90 and Shore A70.
· Outer Diameter: 15-80 mm.
· Shaft (Bore) Diameter: 8-35 mm.
· Length: 25-100 mm.
· Economy Pulleys for Flat Belts-Crowned Type/Crosspiece Groove Straight Type/Width L110-510

CAD ：

2D / 3D

Days to Ship: 8 Day(s) or more

"Same Day Ship Out" is available for item with 1 day

Days to Ship:	7 Day(s) or more

Days to Ship:	7 Day(s) or more

Days to Ship:	8 Day(s) or more

[Clean & Pack]Pulleys for Flat Belts - Width L = 25 to 100

MISUMI

Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.

■ Part Number for Clean & Pack Products

· Degreasing (Anti-rust single packing)	: Part Number SL-□□
· Precision cleaning (degassing double packing)	: Part Number SH-□□
· Electrolytic polishing + precision cleaning (degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.

Selectable from Crosspiece Groove Straight, Crowned (No Flange), and Crowned (Flanged).
Material: S45C and SUS304 have been added.
[Material]5000 Series Aluminum Alloy, S45C, SUS304
[Surface Treatment]5000 Series Aluminum Alloy (Clear Anodize), S45C (Electroless Nickel Plating)
[Type]Pulley
[Pulley Shape]Crowned (Flanged/No Flange), Crosspiece Groove Straight (No Flange)
[Pulley Width: L (mm)]25 to 100
[Shaft Bore Type] Round Hole + Tap, Keyway + Tap (New JIS)

CAD ：: 2D / 3D

Days to Ship:	6 Day(s) or more

"Same Day Ship Out" is available for item with 1 day

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

MISUMI

· The Pulleys for Flat Belts ROBAWC, ROBMWC, ROBSWC, ROBAWM, ROBMWM and ROBSWM types are specific pulleys manufactured by MISUMI.
· Shaft of Pulleys : Crowned and Crosspiece Groove Straight type.
· The series code of Crowned type: ROBAWC, ROBMWC and ROBSWC.
· The series code of Crosspiece Groove type: ROBAWM, ROBMWM and ROBSWM.
· Shaft Type : Round Hole.
· Pulleys Body Material: Aluminum Alloy, STKM13A and SUS304.
· Outer Diameter: 30-80 mm.
· Shaft (Bore) Diameter: 8-35 mm.
· Length: 110 - 510 mm.
· Idlers for Flat Belts-Straight Type/Crosspiece Groove Straight Type/Crowned Type

CAD ：

2D / 3D

Days to Ship: 7 Day(s)

"Same Day Ship Out" is available for item with 1 day
Economy Pulleys for Flat Belts with Urethane-Crowned/Crosspiece Groove Straight

MISUMI

· Shape of Pulleys: Crowned and Crosspiece Groove Straight.
· The series code of Crowned type: RWBCU and RWBCG.
· The series code of Crosspiece Groove Straight type: RWBMU and RWBMG.
· Shaft Type : Round Hole.
· Pulleys Body Material: Aluminum Alloy.
· Lining material: Urethane (Natural Color).
· Hardness: Shore A70 and Shore A90.
· Outer Diameter: 28 - 78 mm.
· Shaft (Bore) Diameter: 8-35 mm.
· Length dimension: 110 - 500 mm.
· The urethane-coated is specially coated or designed to minimize friction and wear.
· NIP, NIPA, NIPS, NIP-SUS Pulley Idler

CAD ：

2D / 3D

Days to Ship: 11 Day(s) or more

"Same Day Ship Out" is available for item with 1 day
Pulleys for Stainless Steel Belts-Crowned

MISUMI

· Product type : Pulleys.
· Shaft of Pulleys : Crowned type.
· Shaft Type : Round Hole.
· The product code series: ROBASC
· Material of Pulleys: Aluminum Alloy.
· Surface Treatment solution: Hard Anodize Treatment (Film Hardness 300HV)
· Outer Diameter: 50, 60, 70, 75, 80 and 100 mm.
· Shaft (Bore) Diameter: 15, 20, 25, 30, 35 and 40 mm.
· Length: 40 to 160 mm.
· Shaft Hole Specifications: Round Hole + Tap and New JIS Keyway + Tap
· Pulleys for Flat Belts with Urethane - Crowned, Crosspiece Groove Straight

CAD ：

2D / 3D

Days to Ship: 7 Day(s)

"Same Day Ship Out" is available for item with 1 day

Days to Ship:	7 Day(s)

Days to Ship:	11 Day(s) or more

Days to Ship:	7 Day(s)

[Clean & Pack]Pulleys for Flat Belts - Width L = 110 to 510

MISUMI

■ Part Number for Clean & Pack Products

· Degreasing (Anti-rust single packing)	: Part Number SL-□□
· Precision cleaning (degassing double packing)	: Part Number SH-□□
· Electrolytic polishing + precision cleaning (degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

Selectable from Crowned with the center slightly higher than both ends and Crosspiece Groove Straight.

[Material]Aluminum Alloy, STKM13 A, SUS304
[Surface Treatment]Clear Anodize, Electroless Nickel Plating
[Type]Pulley
[Pulley Shape]Crowned (No Flange), Crosspiece Groove Straight (No Flange)
[Pulley Width: L (mm)]110 to 510
[Shaft Bore Type] Round Hole + Tap, Keyway + Tap (New JIS)

CAD ：: 2D / 3D

Days to Ship:	6 Day(s) or more

"Same Day Ship Out" is available for item with 1 day

[Clean & Pack]Pulleys for Flat Belts - Pipe Material Type - Width L = 110 to 510

MISUMI

■ Part Number for Clean & Pack Products

· Degreasing (Anti-rust single packing)	: Part Number SL-□□
· Precision cleaning (degassing double packing)	: Part Number SH-□□
· Electrolytic polishing + precision cleaning (degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

Use of thin pipes has realized price reduction by average 32% compared to the conventional products.

[Material]Surface: Aluminum Alloy
[Surface Treatment]Clear Anodize
[Type]Pulley
[Pulley Shape]Crowned (No Flange), Crosspiece Groove Straight (No Flange)
[Pulley Width: L (mm)]110 to 510
[Shaft Bore Type] Round Hole + Tap, Keyway + Tap (New JIS)

CAD ：: 2D / 3D

Days to Ship:	6 Day(s) or more

"Same Day Ship Out" is available for item with 1 day

[Clean & Pack]Pulleys for Stainless Steel Belts

MISUMI

■ Part Number for Clean & Pack Products

· Degreasing (Anti-rust single packing)	: Part Number SL-□□
· Precision cleaning (degassing double packing)	: Part Number SH-□□
· Electrolytic polishing + precision cleaning (degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

Crowned pulleys dedicated for stainless steel belts. This product has a crown with adjusted height for meandering prevention.

[Material]Aluminum Alloy
[Surface Treatment]Hard Clear Anodize
[Type]Pulley
[Pulley Shape]Crowned (No Flange)
[Pulley Width: L (mm)]40 to 160
[Shaft Bore Type] Round Hole + Tap

CAD ：: 2D / 3D

Days to Ship:	6 Day(s) or more

"Same Day Ship Out" is available for item with 1 day


Brand
Product Series
CAD
Days to Ship
Shape
Environmentally Friendly
With or w/o Flange
Properties / applications
Outer Dia. D(Ø)
Nominal Width T(mm)
Length L(mm)
Flange Shape
Type
Material
Shaft Type
Surface Urethane
Shaft (Bore) Dia. d(mm)
Surface Treatment
Shaft End Specification
Cleaning Method


Brand	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI	MISUMI
Product Series	Pulleys for Flat Belts (Width T=6 ~ 32) - Flanged, Crowned, Press-Fit Urethane	Economy Pulleys for Flat Belts-Crowned Type/Crosspiece Groove Straight Type/Width L110-510	Pulleys for Flat Belts (Width L=25 ~ 100) - Crowned, Crosspiece Groove Straight	Pulleys for Flat Belts with Urethane (Width L=25 ~ 100) - Crowned, Crosspiece Groove Straight	[Clean & Pack]Pulleys for Flat Belts - Width L = 25 to 100	Pulley for Flat Belts-Straight Type/Crosspiece Groove Straight Type/Width L110-500	Economy Pulleys for Flat Belts with Urethane-Crowned/Crosspiece Groove Straight	Pulleys for Stainless Steel Belts-Crowned	[Clean & Pack]Pulleys for Flat Belts - Width L = 110 to 510	[Clean & Pack]Pulleys for Flat Belts - Pipe Material Type - Width L = 110 to 510	[Clean & Pack]Pulleys for Stainless Steel Belts
CAD	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D
Days to Ship	7 Day(s) or more	7 Day(s) or more	6 Day(s) or more	8 Day(s) or more	6 Day(s) or more	7 Day(s)	11 Day(s) or more	7 Day(s)	6 Day(s) or more	6 Day(s) or more	6 Day(s) or more
Shape	Straight / Crowned	Crowned / V-Groove	Crowned / V-Groove	Crowned / V-Groove	Crowned / V-Groove	Crowned / V-Groove	Crowned / V-Groove	Crowned	Crowned / V-Groove	Crowned / V-Groove	Crowned
Environmentally Friendly	-	-	-	-	RoHS compliant (10 substances)	-	-	-	RoHS compliant (10 substances)	RoHS compliant (10 substances)	RoHS compliant (10 substances)
With or w/o Flange	Flange / No Flange	No Flange	Flange / No Flange	Flange / No Flange	Flange / No Flange	No Flange	No Flange	No Flange	No Flange	No Flange	No Flange
Properties / applications	-	-	-	-	Clean washing ～ Non-Magnetic	-	-	-	Clean washing ～ Non-Magnetic	Clean washing ～ Vacuum	Clean washing ～ Non-Magnetic
Outer Dia. D(Ø)	15 ～ 100	18 ～ 78	15 ～ 80	15 ～ 80	15 ～ 80	30 ～ 80	28 ～ 78	50 ～ 100	30 ～ 80	18 ～ 78	50 ～ 100
Nominal Width T(mm)	6 ～ 32	-	-	-	-	-	-	-	-	-	-
Length L(mm)	~50	~300 / ~500	~50 / ~100	~50 / ~100	~50 / ~100	~300 / ~500	~300 / ~500	~50 / ~100 / ~300	~300 / ~500	~300 / ~500	~50 / ~100 / ~300
Flange Shape	Standard	-	-	-	Standard	-	-	-	-	-	-
Type	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys	Pulleys
Material	Steel / Aluminum / Stainless Steel	Aluminum	Aluminum	Aluminum	Aluminum	Steel / Aluminum / Stainless Steel	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Shaft Type	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole	Round Hole
Surface Urethane	Urethane Provided / Urethane Not Provided	Urethane Not Provided	Urethane Not Provided	Urethane Provided	Urethane Not Provided	Urethane Not Provided	Urethane Provided	Urethane Not Provided	Urethane Not Provided	Urethane Not Provided	Urethane Not Provided
Shaft (Bore) Dia. d(mm)	-	8 ～ 50	8 ～ 35	8 ～ 35	8 ～ 35	8 ～ 35	8 ～ 35	15 ～ 40	8 ～ 35	8 ～ 50	15 ～ 40
Surface Treatment	Not Provided / Black Oxide / Electroless Nickel Plating / Clear Anodize	Not Provided / Clear Anodize	Clear Anodize	Not Provided	Clear Anodize	Not Provided / Electroless Nickel Plating / Clear Anodize	Not Provided	Hard Clear Anodize	Clear Anodize	Not Provided / Clear Anodize	Hard Clear Anodize
Shaft End Specification	-	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap / Keyway + Tap	Tap / Keyway + Tap
Cleaning Method	-	-	-	-	Degreasing / Precision Cleaning	-	-	-	Degreasing / Precision Cleaning	Degreasing / Precision Cleaning / Electrolytic polishing + precision cleaning	Degreasing / Precision Cleaning

Configure

Specification/Dimensions

Shape
- Straight
- Crowned
- V-Groove
Larger Image

Clear

Environmentally Friendly
- RoHS compliant (10 substances)
Clear

With or w/o Flange
- Flange
- No Flange
Larger Image

Clear

Properties / applications
Clean washing

Conductive / Antistatic

Corrosion resistance / chemical resistance

Insulation Property

Low Dust Generation

Non-Magnetic

Vacuum
Details

Clear

Outer Dia. D(Ø)
15

18

20

24

25

28

29

30

34

35

38

40

43

44.5

45

48

49.5

50

54

55

57

58

60

63

64

65

70

73

74

75

78

80

100
Drawing

Clear

Nominal Width T(mm)
6

7.5

10.5

11

12

14.5

15

16

19

19.5

20

21

24

24.5

25

26

27

29

30

32

34

34.5

35

40

41

44

45

49

50

54

55

60

65

70

80

92
Drawing

Clear