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Timing Pulleys S8M

Timing Pulleys S8M
  • Volume Discount
Check FAQ of this product (8 items)

MISUMI

MiSUMi Economy 76

MISUMI

Timing Pulleys S8M
Timing Pulleys are an economy item, The price is cheaper than the MISUMI standard product.They offer a wide variety of sizes to choose from.
[Feature]
● Belt Width Used (mm.) : 15 and 25
● Applicable with Belt Type : S8M
● Number of Teeth : 18, 19, 22, 24 and 25
● Shaft Bore Diameter Minimum/Maximum (mm.) : 12 to 30
● Shaft Bore Specs. : New JIS keyway + Tap
● Material : Aluminum Alloy
● Surface treatment : Clear Anodized
[Application]
Timing pulleys are frequently utilized in systems that incorporate timing belts to regulate and govern the movement of the machinery.

  • RoHS

Part Number

Configured Part Number is shown.



Economy Timing Pulleys

Timing Pulleys Medium Precision Longer Lifespan

- Easy installation with chamfered shaft bore

- Reduced assembly time by 27%

- Longer timing belt life with deburring treatment

- Suitable for medium-precision conveyance

- Affordable and durable for various applications

Economy Timing Pulleys
MISUMI Economy Logo

MISUMI Standard
MISUMI Standard

Cheaper Price
Cheaper Price

Product Variety
Product Variety

3D CAD
3D CAD Support


Product Overview
Usually, timing pulleys, timing idlers and timing belts are widely used to design mechanisms for transmitting rotational power generated by motors.
Driving and transmission are realized through the engagement between the teeth of timing pulleys, timing idlers and timing belts.
Dimensional Drawing
Standard Tooth ProfileA ShapeShape BN New JIS Keyway + Threaded Hole
Tooth Profile Specification Drawing of MISUMI Economy Series Timing Pulleys S8MMISUMI Timing Pulley Shape AMISUMI timing pulley shaft hole N keyway hole and threaded hole specificationsMISUMI timing pulley shaft hole N keyway hole and threaded hole specifications
The tooth groove size varies slightly with the number of teeth
(Tooth pitch: 8.0 mm)		  Detailed Dimensions of Keyway
The positions of keyway and tooth are not fixed.
The threaded hole of the Shape A pulley is located near 120° to avoid interference with the tooth top.
Threaded hole size table
(shaft hole specifications: P·N)
dH7
Shaft Bore ID		2-M
(Coarse Thread)
12M4×3
13~17M5×4
18~30M6×5
You may purchase them separately referring to the recommended fixing screw models.
Material Surface Treatment
PulleyFlange
Aluminum AlloyAluminum AlloyClear Anodized
Specifications Overview
Ordering Example
Part Number
Pulley
Shape
Shaft Hole Specifications N
Bore Dia.d		P.D.O.D.DFE
TypeNumber of TeethApplicable Belt
C－HTPA18S8M250B1445.8444.46325236
20S8M15014·1550.9349.56365840
S8M25020
241461.1259.74466750
301676.3975.02608767
32S8M40025·3581.4980.12638767

Detailed specifications are available on the official website
Part Number
Pulley
Shape
Shaft Hole Specifications N
Bore Dia.d		P.D.O.D.FE
TypeNumber of TeethApplicable Belt
C－HTPA18S8M150A12·14·15·19·2045.8444.465236
S8M25014·15·19·20·22·25
S8M30020
19S8M25014·15·2048.3847.015540
20S8M15012·14·1550.9349.565840
S8M25012·14·15·17·18·20
S8M30022
211553.4852.16145
22S8M15014·1556.0254.656145
S8M25014·16·20
S8M30022
24S8M15012·14·1661.1259.746750
S8M25012·14·15·20·22
S8M30020·22
S8M40020·25
25S8M15012·14·15·1963.6662.297056
S8M25012·15·16·17·20·22·25·30
S8M40020·25
26S8M2502566.2164.847458
S8M30020
28S8M25015·20·22·2571.369.938060
S8M40025
30S8M25015·16·18·20·22·24·25·4076.3975.028767
S8M30025·35
S8M40020
32S8M2502281.4980.128767
S8M30032
34S8M2502586.5885.219575
S8M30025
36S8M4003591.6790.39980
38S8M2501696.7795.3910484
50S8M30032·40127.32125.95135115
60S8M40040152.79151.42160140
Detailed specifications are available on the official website
Please visit MISUMI website for details of the models available for sale.
Product Features
■Usage difference between economy series timing pulleys and MISUMI standard product / Example of customer use
 Economy series Timing PulleysMISUMI Existing Products
Example of UseMedium-precision reciprocating and conveyanceMedium-precision reciprocating and conveyance
PrecautionsGenerally used in reciprocating and conveyance mechanisms that
require medium positioning accuracy		Generally used in mechanisms that frequently rotate forwardly
and reversely and have requirements on positioning accuracy and backlash.
Repetitive positioning accuracy
(reference value)		Medium precision
(±0.1)		High precision
(±0.05)
 
■More Convenient On-site Assembly
·MISUMI Economy series timing pulley is chamfered at the shaft bore and threaded hole for easy installation, reducing assembly time by 27% compared to the timing pulley not chamfered.

MISUMI Timing Pulley Assembly Time
* The values above are averages of test data and may vary individually.
Photo of Timing Pulley Chamfering
■Longer Timing Belt Life
·MISUMI Economy series timing pulley, with deburring treatment at the threaded hole, is not easy to wear the timing belt, and the price is cheap while increasing the lifetime of the timing belt.
Photo of Deburring Belt condition after the test of timing belt pulley without chamfer on the threaded hole:
there are obvious wear marks left by the pulley tooth threaded hole on the belt tooth surface.
Photo of Belt Wear		[Test conditions]
Belt series: S5M
Belt width: 150mm
Number of teeth of drive side pulley: 20
Number of teeth of driven side pulley: 60
Speed: 3000 rpm
Tension (N): 160N
Test time: 24 H
* Problems of generic products on the market
Example of Use
Example drawing of a workpiece reversal transfer mechanism designed using MISUMI timing pulley
■Mechanism name
Workpiece Reversal Transfer Mechanism

■ Mechanism function
The workpiece moving on the conveyor belt rotates 90 degrees and then transfers to the next process.
At this time, the clamping mechanism rotates 180 degrees and does not change the direction of the workpiece relative to the conveying direction at the same time during transfer.

■Role of the timing pulley
The transmission of the timing pulley and the timing belt changes the placement direction of the workpiece while transferring the workpiece. (Applicable to S specification and GT specification timing pulleys)

For details, please click Workpiece Reversal Transfer Mechanism.
Usage Method
Usage Method Example DrawingUsage Method of Timing Wheel and Timing Belt
MISUMI Timing Pulley Driving Example①Driving
The driven wheel is driven by the driving wheel for transmission
MISUMI Timing Pulley Linear Driving Example②Linear driving
Reciprocating motion is carried out through the self-end timing toothed belt.
Usage Method Example DrawingUsage Method of Timing Wheel and Timing Belt
MISUMI Timing Pulley Conveyance Example③Conveyance
Plates are conveyed by two timing toothed belts
MISUMI Timing Pulley Traction Transmission Example④Traction transmission
Workpieces are clamped and transmitted by the belt
Timing Pulleys S8M, suitable for MISUMI Standard Timing Belts and Economy Series Timing Belts.
Precautions
There may be no surface treatment in the shaft hole.
The positions of keyway and tooth are not fixed.
Application Industries
Semiconductor Automotive Smart Phones
MISUMI timing pulleys are applicable to the semiconductor industry MISUMI timing pulleys are applicable to the automotive industry MISUMI timing pulleys are applicable to the smart phone industry
Medical Electronic & Electrical Robotics
MISUMI timing pulleys are applicable to the medical industry MISUMI timing pulleys are applicable to the electronics and electrical appliances industry MISUMI timing pulleys are applicable to the robotics industry
Related Products
Flat-belt idlers, Width (T), 6 to 32 mm Flat Belts For General Use High Torque Timing Pulleys S2M Type
MISUMI Idlers for Flat Belts MISUMI Idlers for Flat Belts MISUMI High Torque Timing Pulleys S2M Type
Representative model: HBG15-6 Representative model: HBLT350-4.23 Representative model: HTPA48S2M040-B-N10
Advantages: short delivery time, multiple types Advantage: custom size Advantages: short delivery time, multiple types
Related Documents
Technical Data of Timing Toothed Belts, Timing Pulleys and Idlers
①Data on the selection of timing pulleys and timing toothed belts, tensioning force, etc. (drive).
②Data on the selection of timing pulleys and timing toothed belts, tensioning force, etc. (transmission & conveyance).
③Main causes and countermeasures for the damage, breakage, abnormal noise of timing toothed belts.
④Reference data on the replacement time of timing toothed belts.
⑤Data on dimensional tolerance of timing pulleys and timing idlers.

Part Number 

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Part Number
C-HTPA18S8M150-A-N12
C-HTPA18S8M150-A-N14
C-HTPA18S8M150-A-N19
C-HTPA18S8M150-A-N20
C-HTPA18S8M250-A-N14
C-HTPA18S8M250-A-N22
C-HTPA18S8M250-A-P18
C-HTPA18S8M250-B-N14
C-HTPA18S8M300-A-N20
C-HTPA19S8M250-A-N14
C-HTPA19S8M250-A-N15
C-HTPA19S8M250-A-N20
C-HTPA20S8M150-A-N12
C-HTPA20S8M150-A-N14
C-HTPA20S8M150-A-N15
C-HTPA20S8M150-B-N14
C-HTPA20S8M150-B-N15
C-HTPA20S8M250-A-N12
C-HTPA20S8M250-A-N14
C-HTPA20S8M250-A-N15
C-HTPA20S8M250-A-N17
C-HTPA20S8M250-A-N18
C-HTPA20S8M250-B-N20
C-HTPA21S8M300-A-N15
C-HTPA22S8M150-A-N14
C-HTPA22S8M150-A-N15
C-HTPA22S8M250-A-N16
C-HTPA22S8M300-A-N22
C-HTPA24S8M150-A-N12
C-HTPA24S8M150-A-N14
C-HTPA24S8M150-A-N16
C-HTPA24S8M250-A-N12
C-HTPA24S8M250-A-N14
C-HTPA24S8M250-A-N15
C-HTPA24S8M250-A-N22
C-HTPA24S8M250-B-N14
C-HTPA24S8M300-A-H25
C-HTPA24S8M300-A-N22
C-HTPA24S8M400-A-N20
C-HTPA24S8M400-A-N25
C-HTPA25S8M150-A-N12
C-HTPA25S8M150-A-N14
C-HTPA25S8M150-A-N15
C-HTPA25S8M150-A-N19
C-HTPA25S8M250-A-N12
C-HTPA25S8M250-A-N16
C-HTPA25S8M250-A-N17
C-HTPA25S8M250-A-N30
C-HTPA25S8M400-A-N20
C-HTPA25S8M400-A-N25
C-HTPA26S8M250-A-N25
C-HTPA26S8M300-A-N20
C-HTPA28S8M250-A-N15
C-HTPA28S8M250-A-N22
C-HTPA28S8M250-A-N25
C-HTPA28S8M400-A-N25
C-HTPA30S8M250-A-N15
C-HTPA30S8M250-A-N16
C-HTPA30S8M250-A-N18
C-HTPA30S8M250-A-N20
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipBelt Width Used
(mm) 		No. of Teeth
(T) 		Pulley Shape Material Timing Pulley / Idler Shaft Bore Dia. d
(mm) 		Shaft Bore Dia. D
(mm) 		Shaft Hole Shape Number of Teeth

MYR 32.29

1 Piece(s)Available 5 Day(s) 1518Shape A[Aluminum] Aluminum AlloyPulleys1212N-

MYR 32.29

1 Piece(s)Available 5 Day(s) 1518Shape A[Aluminum] Aluminum AlloyPulleys1414N-

MYR 39.80

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--19-18

MYR 32.29

1 Piece(s)Available 5 Day(s) 1518Shape A[Aluminum] Aluminum AlloyPulleys2020N-

MYR 31.04

1 Piece(s)Available 5 Day(s) 2518Shape A[Aluminum] Aluminum AlloyPulleys1414N-

MYR 46.20

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--22-18

MYR 46.20

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--18-18

MYR 55.82

1 Piece(s)Available 5 Day(s) 25-Shape B[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-18

MYR 49.44

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-18

MYR 46.20

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-19

MYR 34.84

1 Piece(s)Available 5 Day(s) 2519Shape A[Aluminum] Aluminum AlloyPulleys1515N-

MYR 34.84

1 Piece(s)Available 5 Day(s) 2519Shape A[Aluminum] Aluminum AlloyPulleys2020N-

MYR 42.94

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--12-20

MYR 42.94

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-20

MYR 42.94

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-20

MYR 54.14

1 Piece(s)Available 5 Day(s) 15-Shape B[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-20

MYR 54.14

1 Piece(s)Available 5 Day(s) 15-Shape B[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-20

MYR 50.44

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--12-20

MYR 50.44

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-20

MYR 50.44

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-20

MYR 50.44

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--17-20

MYR 50.44

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--18-20

MYR 61.62

1 Piece(s)Available 5 Day(s) 25-Shape B[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-20

MYR 54.14

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-21

MYR 32.71

1 Piece(s)Available 5 Day(s) 1522Shape A[Aluminum] Aluminum AlloyPulleys1414N-

MYR 46.36

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-22

MYR 54.96

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--16-22

MYR 59.24

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--22-22

MYR 38.34

1 Piece(s)Available 5 Day(s) 1524Shape A[Aluminum] Aluminum AlloyPulleys1212N-

MYR 49.96

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-24

MYR 49.96

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--16-24

MYR 40.07

1 Piece(s)Available 1 Day(s) 2524Shape A[Aluminum] Aluminum AlloyPulleys1212N-

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-24

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-24

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--22-24

MYR 74.46

1 Piece(s)Available 5 Day(s) 25-Shape B[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-24

MYR 64.68

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-24

MYR 64.68

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--22-24

MYR 79.38

1 Piece(s)Available 5 Day(s) 40-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-24

MYR 79.38

1 Piece(s)Available 5 Day(s) 40-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-24

MYR 49.96

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--12-25

MYR 49.96

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--14-25

MYR 49.96

1 Piece(s)Available 5 Day(s) 15-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-25

MYR 35.84

1 Piece(s)Available 5 Day(s) 1525Shape A[Aluminum] Aluminum AlloyPulleys1919N-

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--12-25

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--16-25

MYR 59.80

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--17-25

MYR 43.34

1 Piece(s)Available 1 Day(s) 2525Shape A[Aluminum] Aluminum AlloyPulleys3030N-

MYR 79.38

1 Piece(s)Available 5 Day(s) 40-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-25

MYR 79.38

1 Piece(s)Available 5 Day(s) 40-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-25

MYR 64.88

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-26

MYR 70.44

1 Piece(s)Available 5 Day(s) 30-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-26

MYR 70.30

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-28

MYR 70.30

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--22-28

MYR 70.30

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-28

MYR 95.18

1 Piece(s)Available 5 Day(s) 40-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--25-28

MYR 76.02

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--15-30

MYR 76.02

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--16-30

MYR 76.02

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--18-30

MYR 76.02

1 Piece(s)Available 5 Day(s) 25-Shape A[Aluminum] Extra Super Duralumin Series Aluminum Alloy--20-30

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Basic Information

Belt Type S8M Surface Treatment Clear Anodize

Configure

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78 Part Numbers

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Specification/Dimensions

  • Belt Width Used(mm)

    • 15
    • 25
    • 30
    • 40

    Clear

  • No. of Teeth(T)

    • 18
    • 19
    • 22
    • 24
    • 25

    Clear

  • Pulley Shape

    • Shape A
    • Shape B

    Clear

  • Material

    • Aluminum
      • Aluminum Alloy
      • Extra Super Duralumin Series Aluminum Alloy

    Clear

  • Shaft Bore Dia. d(mm)

    • 12
    • 14
    • 15
    • 19
    • 20
    • 30

    Clear

  • Shaft Bore Dia. D(mm)

    • 12
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 22
    • 24
    • 25
    • 30
    • 32
    • 33
    • 35
    • 40

    Clear

  • Shaft Hole Shape

    • N

    Clear

  • Number of Teeth

    • 18
    • 19
    • 20
    • 21
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 32
    • 34
    • 36
    • 38
    • 50
    • 60

    Clear

  • type

    • C-HTPA□□S8M

    Clear

  • CAD

    • 2D
    • 3D

    Clear

Days to Ship

    • All
    • 1 Day(s) or Less
    • 5 Day(s) or Less

    Clear

Specify Alterations

Frequently asked question (FAQ)

Question: Why does the flange drop during use of a timing pulley?
Answer: The function of the flange is to prevent production accidents caused by deviation and drop of the timing belt. Therefore, the flange drops mainly because it is squeezed off by the timing belt that has deviated for a long time. We recommend that the customer regularly check the condition of the timing belt of the equipment to avoid its deviation.
Question: Why does the timing pulley has no threaded hole?
Answer: If you have requirements for fixing screws, we recommend that you choose a timing pulley with the shaft hole specification P (round hole + threaded hole) or N·C (keyway hole + threaded hole).
Question: What should be done if there is jitter during use of a timing belt?
Answer: Readjust the tension of the timing pulley. Generally, the belt runs unstably due to excessive shaft spacing and insufficient tension.
Question: Why cannot be the threaded hole of a MISUMI aluminum timing pulley locked tightly?
Answer: As the aluminum material is relatively soft, slippage may occur if the tightening force is too large during locking. We recommend that the customer stops tightening once an obstruction is felt.
Question: How to fix a timing pulley when the shaft hole specification is H (round hole)?
Answer: Generally, H (round hole) can be used only after additional processing. If you need a product that can be directly fixed and used, please choose MISUMI P (round hole + threaded hole) or N (keyway hole + threaded hole) specifications.
Question: What does the number in the timing pulley S2M, S3M, P2M, P3M, T5, T10, 2GT, 3GT, etc. mean?
Answer: It mainly represents the tooth pitch of the belt, that is, the distance between two adjacent teeth. They are also the tooth profile models in the timing belt industry.
Question: How to choose a timing belt after selecting a timing pulley?
Answer: First, the series must be matched. For example, the timing belts of S2M, S3M, and S5M can only match the timing pulleys of S2M, S3M, and S5M. Then, select the timing belt with an width corresponding to the ones indicated in the timing pulley specifications. Finally, select the needed perimeter.
Question: What does the number in the timing pulley S2M, S3M, P2M, P3M, T5, T10, 2GT, 3GT, etc. mean?
Answer: It mainly represents the tooth pitch of the belt, that is, the distance between two adjacent teeth. They are also the tooth profile models in the timing belt industry.

Check other FAQ (5 items) Hide

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