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Tensioner Idlers / toothed / MXL, XL / flanged pulley selectable / single bearing, double bearing / aluminium

Tensioner Idlers / toothed / MXL, XL / flanged pulley selectable / single bearing, double bearing / aluminium
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  • Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.

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Back to the Category Toothed Pulleys/Timing Pulleys/Idler Pulleys

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Flanged Idlers with Teeth - Center Bearing:Related Image
Open the technical drawing in the new window
 

Available dimensions and tolerances can be found under the tab More Information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Toothed Pulleys/Timing Pulleys/Idler Pulleys

 
TypeMaterialSurface Treatment
Center BearingBoth Sides BearingMain BodyFlangeBearing
AATFAATFWAluminum Alloy 2000 seriesEN AW-5052 Equiv.SteelClear Anodize
ANTF-Electroless Nickel Plating

Further specifications can be found under the tab More Information.
 

Composition of a Product Code - Toothed Pulleys/Timing Pulleys/Idler Pulleys

• Center Bearing
Part Number
 
Type Number of Teeth Applicable Belt
AATF 40 MXL037

• Both Sides Bearing
Part Number-d
 
Type Number of
Teeth		-Applicable Belt
AATFW 22-MXL050-3

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Flanged Idlers with Teeth - Center Bearing:Related Image

Here to the Overview of Options as PDF.

General Information - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Toothed pulley - synchronous pulley - belt pulley - product assortment

 

Selection details of toothed pulleys/timing pulleys/idler pulleys

- Material: aluminum, steel, stainless steel (stainless steel), plastic

- Coatings: uncoated, burnished, anodized, nickel-plated

- Profile form: 1.5GT, 2GT, 3GT, 5GT, P2M, P3M, P5M, P8M, S2M, S3M, S5M, S8M, S14M, T2.5, T5, T10, AT5, AT10, 5M, 8M, 14M, 8YU, H, L, MXL, XL, PowerGrip GT3: MR2, MR3, MR5

- ISO tolerances: H7

- Belt width (mm): 4, 4.8, 6, 6.4, 7, 7.9, 9, 9.5, 10, 12, 12.7, 15, 18, 19.1, 20, 25, 25.4, 26, 28, 30, 31, 38,1, 40, 50, 50.8, 53, 60, 74, 76.2, 100

- Belt width (inches): 0.19, 0.25, 0.31, 0.37, 0.5, 0.75, 1, 1.5, 2

- Number of teeth: 10 to 72

 

Description/Basics

The toothed pulley for mechanical engineering is intended for the transmission of force and torque. Timing pulleys enable a gear ratio of speeds through belt pulleys of different sizes. Timing pulleys are more efficient, durable and significantly more maintenance-friendly compared to chain transmissions.

How much torque and load a timing pulley can transmit depends on the width of the belt. The width of the belt must be calculated. It is recommended to ensure the belt is correctly tensioned. MISUMI already offers the suitable idler pulley and return rollers with integrated ball bearings. For design and design help follow this link.

Different profile shapes of the toothed belts and belt pulleys are responsible for the transmission of power. Depending on the positioning accuracy, the applied torque and the conveying weight, MISUMI offers the fitting pulley. Toothed belt drives are generally used in the industry in three areas:
Positioning: Timing pulleys is often used in 3D printers. A toothed pulley with a semi-circular profile (e.g., GT) is often used for the required position accuracy of a 3D printers. The round shape offers the benefit of little play when the direction changes.
Drive: toothed pulleys are also used for high torque. In most cases, a timing pulley with a rounded trapezoidal profile (e.g., S8M) is used. These are particularly well suited for the transmission of high forces, which occur in drives of various applications in order to drive mechanical components.
Conveying: toothed pulleys can also be used for transporting loads. A straight trapezoidal profile is often used for this purpose (e.g., AT). This toothed pulley shape offers a large surface for loading and transmitting of loads.

Which toothed pulley or timing pulley is the right one for your application depends on the respective task of the toothed belt drive. Different toothed disc profiles have proven themselves for each type of application.

Various bore hole shapes and fastening variants are available for shaft mounting. These allow fastening via set screws, keyways and by means of Mecha locks. Fastening via a clamping sleeve has the further advantage that it allows adjusting the alignment continuously. The MISUMI product assortment has these ready-to-install.

Application Examples - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Application example: idler pulley - idler pully toothed with chain tensioner - toothed pulley with chain tensioner

Application example: idler pulley
(1) Idler pulleys, (2) chain tensioner

Application example: return roller - return roller with cantilever pin - synchronous pulley with on-board disc - toothed pulley with on-board disc

Application example: deflection roller
S (1) Toothed pulleys with crimp disc, (2) nut, (3) washer, (4) cantilever shaft, (5) retaining ring

Application example: synchronous pulleys - toothed pulleys with toothed belts - toothed pulley with screw-on clamp

Application example: timing pulleys
(1) Flat head screw, (2) Timing pulley, (3) Timing belt, (4) Screw-on terminal

Application example: toothed belt drives - toothed pulleys with crimp disc - idler pulley with crimp disc - tensioning of the toothed belt

Application example: of toothed belt drives
(1) Toothed belt, (2) driven toothed pulley with crimp disc, (3) idler pulley with crimp disc, (4) driving toothed pulley with crimp disc

 

Industrial Applications

3D printer industry
Automotive industry
Pharmaceutical industry
Packaging industry

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Part Number
AATF18XL025
AATF18XL031
AATF18XL037
AATF20MXL019
AATF20XL025
AATF20XL031
AATF20XL037
AATF22MXL019
AATF22XL025
AATF22XL031
AATF22XL037
AATF22XL050
AATF24MXL019
AATF25XL025
AATF25XL031
AATF25XL037
AATF25XL050
AATF28XL025
AATF28XL031
AATF30MXL019
AATF30XL025
AATF30XL031
AATF30XL037
AATF30XL050
AATF36MXL019
AATF36XL025
AATF36XL031
AATF36XL037
AATF36XL050
AATF40MXL019
AATF40MXL025
AATF40MXL037
AATF50MXL019
AATF50MXL025
AATF50MXL037
AATF60MXL019
AATF60MXL025
AATF60MXL037
AATFW16-MXL019-3
AATFW16-XL025-5
AATFW16-XL031-5
AATFW16-XL037-5
AATFW16-XL050-5
AATFW18-XL037-6
AATFW18-XL050-6
AATFW20-MXL019-3
AATFW20-XL037-8
AATFW20-XL050-8
AATFW22-MXL025-3
AATFW22-MXL037-3
AATFW22-MXL050-3
AATFW22-XL037-8
AATFW22-XL050-8
AATFW24-MXL025-4
AATFW24-MXL037-4
AATFW24-MXL050-4
AATFW25-XL037-10
AATFW25-XL050-10
AATFW28-XL037-10
AATFW28-XL050-12
Part Number
Standard Unit Price
Minimum order quantityVolume Discount
Standard
Shipping Days
?
RoHSBelt Type Belt Width
(mm) 		Operating belt width
(Inch) 		[T] Number of Teeth Material Surface Treatment [d] Diameter (Shaft Bore)
(mm)

30.49 €

1 Available 6 Days 10XL6.40.2518[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

30.49 €

1 Available 6 Days 10XL7.90.3118[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

30.49 €

1 Available 6 Days 10XL9.50.3718[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

26.70 €

1 Available 6 Days 10MXL4.80.1920[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

32.65 €

1 Available 6 Days 10XL6.40.2520[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

32.65 €

1 Available 6 Days 10XL7.90.3120[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

32.65 €

1 Available 6 Days 10XL9.50.3720[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

27.71 €

1 Available 6 Days 10MXL4.80.1922[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

33.91 €

1 Available 6 Days 10XL6.40.2522[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

33.91 €

1 Available 6 Days 10XL7.90.3122[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

33.91 €

1 Available 6 Days 10XL9.50.3722[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

33.91 €

1 Available 6 Days 10XL12.70.522[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

28.21 €

1 Available 6 Days 10MXL4.80.1924[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

35.93 €

1 Available 6 Days 10XL6.40.2525[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

36.18 €

1 Available 6 Days 10XL7.90.3125[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

36.43 €

1 Available 6 Days 10XL9.50.3725[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

39.22 €

1 Available 6 Days 10XL12.70.525[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

36.70 €

1 Available 8 Days 10XL6.40.2528[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

36.95 €

1 Available 8 Days 10XL7.90.3128[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

28.86 €

1 Available 6 Days 10MXL4.80.1930[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

36.95 €

1 Available 8 Days 10XL6.40.2530[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

37.44 €

1 Available 8 Days 10XL7.90.3130[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

38.72 €

1 Available 8 Days 10XL9.50.3730[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

50.61 €

1 Available 8 Days 10XL12.70.530[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

30.12 €

1 Available 6 Days 10MXL4.80.1936[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

38.47 €

1 Available 8 Days 10XL6.40.2536[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

39.74 €

1 Available 8 Days 10XL7.90.3136[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

40.99 €

1 Available 8 Days 10XL9.50.3736[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

52.88 €

1 Available 8 Days 10XL12.70.536[Aluminum] EN AW-2017 Equiv. (Duralumin)Clear Anodize-

30.49 €

1 Available 6 Days 10MXL4.80.1940[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

30.49 €

1 Available 6 Days 10MXL6.40.2540[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

30.49 €

1 Available 6 Days 10MXL9.50.3740[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

32.27 €

1 Available 6 Days 10MXL4.80.1950[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

32.65 €

1 Available 6 Days 10MXL6.40.2550[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

40.11 €

1 Available 6 Days 10MXL9.50.3750[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

33.66 €

1 Available 6 Days 10MXL4.80.1960[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

34.17 €

1 Available 6 Days 10MXL6.40.2560[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

48.83 €

1 Available 6 Days 10MXL9.50.3760[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize-

24.43 €

1 Available 6 Days 10MXL4.80.1916[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize3

26.56 €

1 Available 12 Days 10XL6.40.2516[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize5

27.84 €

1 Available 6 Days 10XL7.90.3116[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize5

28.47 €

1 Available 6 Days 10XL9.50.3716[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize5

34.03 €

1 Available 6 Days 10XL12.70.516[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize5

28.96 €

1 Available 6 Days 10XL9.50.3718[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize6

39.35 €

1 Available 6 Days 10XL12.70.518[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize6

25.17 €

1 Available 6 Days 10MXL4.80.1920[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize3

31.13 €

1 Available 6 Days 10XL9.50.3720[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize8

40.23 €

1 Available 6 Days 10XL12.70.520[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize8

28.47 €

1 Available 6 Days 10MXL6.40.2522[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize3

32.52 €

1 Available 6 Days 10MXL9.50.3722[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize3

37.33 €

1 Available 6 Days 10MXL12.70.522[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize3

32.52 €

1 Available 6 Days 10XL9.50.3722[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize8

37.82 €

1 Available 6 Days 10XL12.70.522[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize8

29.74 €

1 Available 6 Days 10MXL6.40.2524[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize4

33.53 €

1 Available 6 Days 10MXL9.50.3724[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize4

38.09 €

1 Available 6 Days 10MXL12.70.524[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize4

36.95 €

1 Available 6 Days 10XL9.50.3725[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize10

42.26 €

1 Available 6 Days 10XL12.70.525[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize10

37.33 €

1 Available 8 Days 10XL9.50.3728[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize10

37.96 €

1 Available 8 Days 10XL12.70.528[Aluminum] 2000 Series Aluminum Alloy (Duralumin)Clear Anodize12

Loading...

  1. 1
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Back to the Category Toothed Pulleys/Timing Pulleys/Idler Pulleys

Technical Drawing - Toothed Pulleys/Timing Pulleys/Idler Pulleys

Flanged Idlers with Teeth - Center Bearing:Related Image
Open the technical drawing in the new window

Specification Tables - Toothed Pulleys/Timing Pulleys/Idler Pulleys

■MXL (Center Bearing)
Part NumberShaft Dia.
d		P.D.O.D.FEAWSBearing DimensionsUnit Price
TypeNumber of TeethApplicable BeltNo.DB
AATF20MXL019312.9412.4318116103693ZZx184 
22MXL019314.2313.7218116103693ZZx184 
24MXL019315.5215.0220136103693ZZx184 
30MXL019519.4018.9025166103695ZZx1134 
36MXL019523.2922.7828186103695ZZx1134 
40MXL019625.8725.3630206102.5696ZZx1155 
MXL0257.511.53.25 
MXL03711155 
50MXL019832.3431.8435256102698ZZx1196 
MXL0257.511.52.75 
MXL03711154.5 
60MXL0191038.8138.30443261026900ZZx1226 
MXL0257.511.52.75 
MXL03711154.5 

■MXL (Both Sides Bearing)
Part NumberShaft Dia. dP.D.O.D.FEAWDhBearing DimensionsUnit Price
TypeNumber of TeethApplicable BeltNo.DB
AATFW16MXL019310.359.841486105673ZZx262.5 
20MXL019312.9412.4318116105673ZZx262.5 
22MXL025314.2313.7218117.511.55673ZZx262.5 
MXL0371115 
MXL0501418 
24MXL025415.5215.0220137.511.56674ZZx272.5 
MXL0371115 
MXL0501418 
30MXL019419.4018.9025166106674ZZx272.5 
36MXL025523.2922.7828187.511.511695ZZx2134 
MXL0371115 
MXL0501418 
40MXL025525.8725.3630207.511.511695ZZx2134 
MXL0376111513696ZZx2155 
MXL0501418 
50MXL025532.3431.8435257.511.511695ZZx2134 
MXL0378111516.5698ZZx2196 
MXL0501418 
60MXL025538.8138.3044327.511.511695ZZx2134 
MXL03710111519.56900ZZx2226 
MXL0501418 

■XL (Center Bearing)
Part NumberShaft Dia.
d		P.D.O.D.FEAWSBearing DimensionsUnit Price
TypeNumber of TeethApplicable BeltNo.DBAATFANTF
AATF
ANTF		18XL025629.1128.6036247.512.53.25626ZZx1196  
XL0319144  
XL03711165  
20XL025632.3431.8340277.512.53.25626ZZx1196  
XL0319144  
XL03711165  
22XL025835.5735.0745307.512.52.25628ZZx1248  
XL0319143  
XL03711164  
XL05014195.5  
25XL0251040.4339.9248357.512.52.256000ZZx1268  
XL0319143  
XL03711164  
XL05014195.5  
28XL0251045.2844.7755407.512.52.256000ZZx1268  
XL031109142.56200ZZx1309  
30XL0251048.5148.0055407.512.52.256000ZZx1268  
XL031109142.56200ZZx1309  
XL03711163.5  
XL05014195  
36XL0251258.2157.7067507.512.52.256001ZZx1288  
XL0311291426201ZZx13210  
XL03711163  
XL05014194.5  

■XL (Both Sides Bearing)
Part NumberShaft Dia. dP.D.O.D.FEAWDhBearing DimensionsUnit Price
TypeNumber of TeethApplicable BeltNo.DB
AATFW16XL025525.8725.3632207.512.511695ZZx2134 
XL031914 
XL0371116 
XL0501419 
18XL037629.1128.603624111613696ZZx2155 
XL0501419 
20XL037832.3431.834027111616.5698ZZx2196 
XL0501419 
22XL037835.5735.074530111616.5698ZZx2196 
XL0501419 
25XL0371040.4339.924835111619.56900ZZx2226 
XL0501419 
28XL0371045.2844.775540111619.56900ZZx2226 
XL050121419256001ZZx2288 
30XL0371048.5148.005540111619.56900ZZx2226 
XL050121419256001ZZx2288 
36XL0371058.2157.706750111619.56900ZZx2226 
XL050121419256001ZZx2288 

Alterations - Toothed Pulleys/Timing Pulleys/Idler Pulleys


Flanged Idlers with Teeth - Center Bearing:Related Image

Here to the Option Overview PDF
 

Basic information

Type Idlers with Teeth Timing Pulleys/Idlers Idlers

Configure

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Basic Attributes

  • Belt Type

    • MXL
    • XL

    Clear

  • Belt Width(mm)

    • 4.8
    • 6.4
    • 7.9
    • 9.5
    • 12.7

    Clear

  • Operating belt width(Inch)

    • 0.19
    • 0.25
    • 0.31
    • 0.37
    • 0.5

    Clear

  • [T] Number of Teeth

    • 16
    • 18
    • 20
    • 22
    • 24
    • 25
    • 28
    • 30
    • 36
    • 40
    • 50
    • 60

    Clear

  • Material

    • Aluminum
      • EN AW-2017 Equiv. (Duralumin)
      • 2000 Series Aluminum Alloy (Duralumin)

    Clear

  • Surface Treatment

    • Clear Anodize
    • Electroless Nickel Plating

    Clear

  • [d] Diameter (Shaft Bore)(mm)

    • 3
    • 4
    • 5
    • 6
    • 8
    • 10
    • 12

    Clear

  • Type

    • AATFW□□-MXL
    • AATFW□□-XL
    • AATF□□MXL
    • AATF□□XL
    • ANTF□□XL

    Clear

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Filter by standard shipping days

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    • 6 Days or Less
    • 8 Days or Less
    • 9 Days or Less
    • 12 Days or Less

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Optional Attributes

Frequently Asked Questions (FAQ)

Question:

Do you have any belt pulleys without a hole?
Answer:

The MISUMI toothed pulleys always have a pilot bore. It is expanded depending on your configuration. It provides the advantage that the belt pulleys are already provided with a suitable shaft bore ready for installation. Therefore, it does not require time-consuming post-processing.
Question:

Do you have timing pulleys made of aluminum?
Answer:

The MISUMI online shop also offers timing pulleys or toothed pulleys in aluminum. Furthermore, we are also offering belt pulleys in steel and stainless steel. The return rollers and idler pulleys for the timing belts are also available in plastic.
Question:

Is a transmission with toothed belt pulleys possible?
Answer:

With toothed pulleys, a gear ratio is possible in a drive. The gear ratio is established based on the number of teeth on the belt pulleys. It should be ensured that the minimum number of teeth of the timing pulley disc is not undercut.

Question:

Which type of the toothed belt pulley can be clamped during assembly?
Answer:

There are a number of ways to install timing pulleys on a shaft. For applications that are not exposed to high torque, such as conveyors, it can be sufficient to fasten a timing pulley using clamping threaded pins. For this purpose, the shaft should have a flat surface.
For higher loads, a toothed pulley with a keyway can also be used.
A further variant is the fastening of a timing pulley via a conical chip sleeve. Depending on the type of Mecha lock, the timing pulley requires lateral internal threads, which can be added through additional options in the MISUMI online shop.
A timing pulley with a bore hole can also be combined with a Mech lock. MISUMI is offering this combination as a set.

Question:

Where do you position the tension roller?
Answer:

If an idler pulley should be utilised, it should be positioned on the sag side. This means that the idler pulley is attached to the side not subjected to pull.
Ideally, a toothed idler pulley is mounted on the inside of the toothed belt. The tensioning roller should always be larger than the smallest toothed idler pulley of the belt drive system.
If an idler pulley must tension the toothed belt from the outside, then a non-toothed (flat) idler pulley should be used. Cantilever pins, which MISUMI offers in various geometric versions, are suitable for fastening.

Question:

Which parallel key can be used for the toothed pulleys?
Answer:

The parallel key size is based on the shaft diameter. In this case, it is recommended using the MISUMI parallel keys, as they fit better when MISUMI toothed pulleys are used. See Overview available as PDF for keyway tolerances.
Question:

Is a timing pulley with a round profile better?
Answer:

Timing pulleys and round-profile timing belts are not recommended for every application. For example, the round profile shape is well suited for applications that require high positioning accuracy. Therefore, they are often used in 3D printers and scanners. Compared to other profile shapes, the round profile shape has a higher wear resistance. Another advantage of the round profile shape is the minimized play in the return (reverse play).
Question:

Which belt pulley is suitable for Gates toothed belts?
Answer:

The GT and EV timing pulleys are suitable for Gates’ toothed belts. However, these require you put attention to the slope (distance of the teeth) of the toothed belt. It must be checked whether these correspond to the selected toothed pulley.
Question:

Are the curtain discs necessary for the toothed pulleys?
Answer:

It is recommended using the smaller belt pulleys particularly with curb disc. The curb disk ensures that the toothed belt does not migrate down from the toothed belt pulley. Even with the smallest misalignment of a pulley, there may be a risk that the toothed belt will move and jump during operation.
Question:

How is the gearing of the toothed pulleys manufactured?
Answer:

The gear teeth of the MISUMI toothed belt pulley are mainly pushed. This ensures high manufacturing accuracy. As a result, the teeth fit precisely into the toothed belt profile of the timing belts and ensure optimal power and torque transmission.

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