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Timing Pulleys Aluminum Clear Anodized XL (Part Numbers)

Product Overview
Usually, timing pulleys 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 and timing belts.
Dimensional Drawing
Standard Tooth ProfilePulley Shape
A

Shape B
MISUMI Timing Pulleys XL Tooth Profile Drawing
The tooth groove size varies slightly with the number of teeth
(Tooth pitch: 5.08 mm)
MISUMI Timing Pulleys XL Type Shape AMISUMI Timing Pulleys XL Type Shape B
Tapped Hole Size Table
(Shaft Bore Specs.: P·N)
dH7
Shaft Bore ID
M
(Coarse Thread)
Accessory
Fixing Screw
4M3M3×3
5~12M4M4×3
13~17M5M5×4
18~30M6M6×5
Shaft Bore Specs.
H Round HoleP Round Hole + Threaded HoleN New JIS Keyway + Threaded Hole 
MISUMI timing pulley shaft bore H round hole specificationsMISUMI timing pulley shaft bore P round hole and threaded hole specificationsMISUMI timing pulley shaft bore N or C keyway hole and threaded hole specifications 
Without threaded holes and set screws.Not applicable for Shape A with the number of teeth 15 or less and nominal width 025.
The stop threaded hole of Shape A pulley is located near 120° to avoid interference with the threads.
When the number of teeth is 15 or less and the nominal width is 025 for Shape A, only the keyway hole is not threaded.
For detailed dimensions of keyway, please click Here.
 
Specifications Overview
Part Number Material Surface Treatment
Belt Width 6.4mm
(1/4inch)
Belt Width 7.9mm
(5/16inch)
Belt Width 9.5mm
(3/8inch)
Belt Width 12.7mm
(1/2inch)
PulleyFlange
A: 7.5 W: 12.5 L: 21A: 9 W: 14 L: 23A: 11 W: 16 L: 25A: 14 W: 19 L: 28
E-ATP□□XL025E-ATP□□XL031E-ATP□□XL037E-ATP□□XL050Aluminum AlloyAluminum AlloyClear Anodized
The flange is riveted, and set screws are included for shaft bore specs. P or N.
Specification Table
Part NumberPulley
Shape
Shaft Bore Specs.Shaft Bore Specs. (1mm increments)P.D.O.D.DFE
TypeNumber of TeethType & Nominal WidthH
Round Hole
P
Round Hole + Threaded Hole
N
Keyway Hole + Tap
dH7
Shape AShape BShape AShape BShape AShape B
(Aluminum Alloy)
E-ATP
10XL025
*A :7.5
*W:12.5
*L :21  


XL031
*A :9
*W :14
*L :23  


XL037
*A :11
*W :16
*L :25 


XL050
*A :14
*W :19
*L :28
A



B
H

P

N
4~84~64~6--16.1715.66102412
114~84~64~6--17.7917.28
124~114~84~84~6--19.418.9122515
145~145~115~115~88822.6422.13152818
155~165~135~125~108·10·NK108·10·NK1024.2623.75173220
165~165~135~135~108~138·10·NK1025.8725.36
186~206~176~165~138~158~1329.1128.6213624
196~206~176~166~158~158~1330.7230.22
208~238~208~188~168~168~1532.3431.83244027
218~238~208~188~168~188~1633.9633.45
228~268~228~228~178~208~1635.5735.07264530
248~268~228~228~178~228~1638.8138.3
258~318~268~258~208~228~1940.4339.92304835
268~318~268~258~208~238~2042.0141.53
288~368~318~318~258~258~2045.2844.77355540
3010~368~3110~318~2510~308~2048.5148
3210~4110~3610~3510~3010~3210~2551.7451.24406145
3410~4110~3610~3510~3010~3210~2554.9854.47
3610~4610~3610~3510~3010~3510~2558.2157.76750
3810~4610~3610~3510~3010~3510~2561.4560.94
4010~5410~3610~3510~3010~3510~2564.6864.17407458
4210~5410~3610~3510~3010~3510~2567.9167.41
4410~5610~3610~3510~3010~3510~2571.1570.648060
4610~5610~3610~3510~3010~3510~2574.3873.87
4810~6310~3610~3510~3010~3510~2577.6277.118767
5010~6310~3610~3510~3010~3510~2580.8580.34408767
6010~7710~3610~3510~3010~3510~2597.0196.5110484
7210~8510~3610~3510~3010~3510~25116.43115.92123102
Shaft Bore Specs. P cannot be selected for Shape A with the number of teeth 15 or less and nominal width 025. Threads are not included for Shaft Bore Specs. N.
Shaft Bore Dia. 4.5 and 6.35, if falling within the selection range, can be selected for Shaft Bore Specs. H and P.
Specify NK10 when New JIS Keyway Hole + Threaded Hole with shaft bore diameter of 10 and keyway width 4.0mm (height 1.8mm) is requested. For detailed dimensions of keyway, please click here.
For shaft hole specification N, NK10 can also be selected if it is within the selection range.
Shaft Bore Dia. 9 is not available for Shaft Bore Specs. N.
Product Features
Feature 1: XL specification timing pulleys, suitable for general torque transmission design and high speed conveyance design.
Feature 2: XL specification timing pulleys provide great transmission accuracy and efficiency, making them suitable for high-precision transmission and conveyance designs.
Feature 3: XL specification timing pulleys have a wide range of load and speed ratios, applicable to most mechanisms and equipment.
Feature 4: MISUMI timing pulleys satisfy industrial standards, enabling for a reliable purchase and simple equipment maintenance.
Feature 5: MISUMI timing pulleys are available in various materials and suitable for a wide range of design environments.
Feature 6: MISUMI timing pulleys are made with meticulous attention to detail, allowing customers to make purchases with more confidence.
Features of MISUMI Timing Belts XL timing pulley
①Well processed teeth→High processing accuracy
②Threaded hole deburred→Longer service life of timing belt
③Evenly press-fitted retainer→Firm retainer, not easy to fall off
④Beautiful tooth shape→Precisely engaged belt, with high concentricity
Usage Method
Usage Method Example DrawingUsage Method of Timing Wheel and Timing Belt
MISUMI Timing Belt Driving Example  timing pulley①Driving (The driven wheel is driven by the driving wheel for transmission)
MISUMI Timing Pulley Linear Driving Example  timing pulley②Linear driving (Reciprocating motion is carried out through the free-end toothed timing belt.)
Usage Method Example DrawingUsage Method of Timing Wheel and Timing Belt
MISUMI Timing Pulley Conveyance Example  timing pulley③Conveyance (Plates are conveyed by two toothed timing belts)
MISUMI Timing Pulley Traction Transmission Example  timing pulley④Traction transmission (Workpieces are clamped and transmitted by the belt)
Precautions
①For Shaft Bore Specs. P (round hole+threaded hole) or N, the attached set screws are shipped in the same package (may drop in the packaging bag).
②There is no threaded hole for Shaft Bore Specs. H (round hole).
③There may be no surface treatment in the shaft bore.
For the N keyway hole, the position relation between keyway and tooth is not fixed.
Example of Use
Example drawing of a ball spline lifting & rotating mechanism designed using MISUMI timing pulley  timing pulley
Equipment Name:
      Ball Spline Lifting & Rotating Mechanism
Purpose:
      Rotates the workpiece received from the previous process 90 degrees to lower it and transfers the workpiece to the next process.
Purpose of Timing Pulley:
      The transmission of the timing pulley changes the direction of the collet. (Applicable to timing pulleys with specifications MXL, XL, L and H)

For details, please clickhere.
Application Industries
Semiconductor Automotive Smart Phones
MISUMI Timing Pulleys XL are applicable to the semiconductor industry  timing pulley MISUMI Timing Pulleys XL are applicable to the automotive industry  timing pulley MISUMI Timing Pulleys XL are applicable to the smart phone industry  timing pulley
Medical Electronic & Electrical Robotics
MISUMI Timing Pulleys XL are applicable to the medical industry  timing pulley MISUMI Timing Pulleys XL are applicable to the electronics and electrical appliances industry  timing pulley MISUMI Timing Pulleys XL are applicable to the robotics industry  timing pulley
Related Products
Idler Toothed Timing Belts XL Toothed Timing Belts
High Torque Timing Belts S2M, S3M, S5M and S8M Drawing Long Toothed Timing Belt, Polyurethane, Configurable Number of Teeth, Joint Processed Product Drawing Free-End Toothed Timing Belt Drawing
Representative model: AATF28XL031 Representative model: TBN128XL031 Representative model: C-TBN178XL031
Related Documents
Technical Data of Toothed Timing Belts and Timing Pulleys
①For the data on the selection of timing pulleys and toothed timing belts, tensioning force, etc. (drive), please click here and check.
②For the data on the selection of timing pulleys and toothed timing belts, tensioning force, etc. (transmission & conveyance), please click here and check.
③For the main causes and countermeasures for the damage, breakage, abnormal noise of timing toothed belts, please click here and check.
④For the reference data on the replacement time of toothed timing belts, please click here and check.
⑤For the data on dimensional tolerance of timing pulleys, please click here and check.

Part Number 

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Part Number
E-ATP36XL050-B-H12.7
E-ATP36XL050-B-H[10-36/1]
E-ATP36XL050-B-N[10-25/1]
E-ATP36XL050-B-NK10
E-ATP36XL050-B-P12.7
E-ATP36XL050-B-P[10-30/1]
E-ATP38XL025-B-H12.7
E-ATP38XL025-B-H[10-36/1]
E-ATP38XL025-B-N[10-25/1]
E-ATP38XL025-B-NK10
E-ATP38XL025-B-P12.7
E-ATP38XL025-B-P[10-30/1]
E-ATP38XL031-B-H12.7
E-ATP38XL031-B-H[10-36/1]
E-ATP38XL031-B-N[10-25/1]
E-ATP38XL031-B-NK10
E-ATP38XL031-B-P12.7
E-ATP38XL031-B-P[10-30/1]
E-ATP38XL037-B-H12.7
E-ATP38XL037-B-H[10-36/1]
E-ATP38XL037-B-N[10-25/1]
E-ATP38XL037-B-NK10
E-ATP38XL037-B-P12.7
E-ATP38XL037-B-P[10-30/1]
E-ATP38XL050-B-H12.7
E-ATP38XL050-B-H[10-36/1]
E-ATP38XL050-B-N[10-25/1]
E-ATP38XL050-B-NK10
E-ATP38XL050-B-P12.7
E-ATP38XL050-B-P[10-30/1]
E-ATP40XL025-B-H12.7
E-ATP40XL025-B-H[10-36/1]
E-ATP40XL025-B-N[10-25/1]
E-ATP40XL025-B-NK10
E-ATP40XL025-B-P12.7
E-ATP40XL025-B-P[10-30/1]
E-ATP40XL031-B-H12.7
E-ATP40XL031-B-H[10-36/1]
E-ATP40XL031-B-N[10-25/1]
E-ATP40XL031-B-NK10
E-ATP40XL031-B-P12.7
E-ATP40XL031-B-P[10-30/1]
E-ATP40XL037-B-H12.7
E-ATP40XL037-B-H[10-36/1]
E-ATP40XL037-B-N[10-25/1]
E-ATP40XL037-B-NK10
E-ATP40XL037-B-P12.7
E-ATP40XL037-B-P[10-30/1]
E-ATP40XL050-B-H12.7
E-ATP40XL050-B-H[10-36/1]
E-ATP40XL050-B-N[10-25/1]
E-ATP40XL050-B-NK10
E-ATP40XL050-B-P12.7
E-ATP40XL050-B-P[10-30/1]
E-ATP42XL025-B-H12.7
E-ATP42XL025-B-H[10-36/1]
E-ATP42XL025-B-N[10-25/1]
E-ATP42XL025-B-NK10
E-ATP42XL025-B-P12.7
E-ATP42XL025-B-P[10-30/1]
E-ATP42XL031-B-H12.7
E-ATP42XL031-B-H[10-36/1]
E-ATP42XL031-B-N[10-25/1]
E-ATP42XL031-B-NK10
E-ATP42XL031-B-P12.7
E-ATP42XL031-B-P[10-30/1]
E-ATP42XL037-B-H12.7
E-ATP42XL037-B-H[10-36/1]
E-ATP42XL037-B-N[10-25/1]
E-ATP42XL037-B-NK10
E-ATP42XL037-B-P12.7
E-ATP42XL037-B-P[10-30/1]
E-ATP42XL050-B-H12.7
E-ATP42XL050-B-H[10-36/1]
E-ATP42XL050-B-N[10-25/1]
E-ATP42XL050-B-NK10
E-ATP42XL050-B-P12.7
E-ATP42XL050-B-P[10-30/1]
E-ATP44XL025-B-H12.7
E-ATP44XL025-B-H[10-36/1]
E-ATP44XL025-B-N[10-25/1]
E-ATP44XL025-B-NK10
E-ATP44XL025-B-P12.7
E-ATP44XL025-B-P[10-30/1]
E-ATP44XL031-B-H12.7
E-ATP44XL031-B-H[10-36/1]
E-ATP44XL031-B-N[10-25/1]
E-ATP44XL031-B-NK10
E-ATP44XL031-B-P12.7
E-ATP44XL031-B-P[10-30/1]
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSBelt Width Used
(mm)
Pulley Shape Min. Shaft Bore Dia.
(mm)
Number of Teeth Operating Belt Width
(inch)
Shaft Bore Specs. (Round Hole+Threaded Hole) [P]
(mm)
Shaft Bore Specs. (Round Hole) [H]
(mm)
Shaft Bore Specs. (Shaft Bore Dia. 10 Keyway Width 4mm Height 1.8mm) [NK] Shaft Bore Specs. (New JIS Keyway Hole+Threaded Hole) [N]
(mm)

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.5-12.7--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.5-10 ~ 36--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.5---10 ~ 25

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.5--10-

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.512.7---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-360.510 ~ 30---

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.25-12.7--

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.25-10 ~ 36--

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.25---10 ~ 25

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.25--10-

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.2512.7---

-

1 Piece(s) 8 Day(s) 106.4Shape B-380.2510 ~ 30---

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.31-12.7--

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.31-10 ~ 36--

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.31---10 ~ 25

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.31--10-

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.3112.7---

-

1 Piece(s) 8 Day(s) 107.9Shape B-380.3110 ~ 30---

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.37-12.7--

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.37-10 ~ 36--

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.37---10 ~ 25

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.37--10-

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.3712.7---

-

1 Piece(s) 8 Day(s) 109.5Shape B-380.3710 ~ 30---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.5-12.7--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.5-10 ~ 36--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.5---10 ~ 25

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.5--10-

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.512.7---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-380.510 ~ 30---

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.25-12.7--

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.25-10 ~ 36--

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.25---10 ~ 25

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.25--10-

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.2512.7---

-

1 Piece(s) 8 Day(s) 106.4Shape B-400.2510 ~ 30---

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.31-12.7--

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.31-10 ~ 36--

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.31---10 ~ 25

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.31--10-

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.3112.7---

-

1 Piece(s) 8 Day(s) 107.9Shape B-400.3110 ~ 30---

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.37-12.7--

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.37-10 ~ 36--

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.37---10 ~ 25

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.37--10-

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.3712.7---

-

1 Piece(s) 8 Day(s) 109.5Shape B-400.3710 ~ 30---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.5-12.7--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.5-10 ~ 36--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.5---10 ~ 25

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.5--10-

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.512.7---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-400.510 ~ 30---

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.25-12.7--

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.25-10 ~ 36--

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.25---10 ~ 25

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.25--10-

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.2512.7---

-

1 Piece(s) 8 Day(s) 106.4Shape B-420.2510 ~ 30---

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.31-12.7--

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.31-10 ~ 36--

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.31---10 ~ 25

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.31--10-

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.3112.7---

-

1 Piece(s) 8 Day(s) 107.9Shape B-420.3110 ~ 30---

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.37-12.7--

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.37-10 ~ 36--

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.37---10 ~ 25

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.37--10-

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.3712.7---

-

1 Piece(s) 8 Day(s) 109.5Shape B-420.3710 ~ 30---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.5-12.7--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.5-10 ~ 36--

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.5---10 ~ 25

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.5--10-

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.512.7---

-

1 Piece(s) 8 Day(s) 1012.7Shape B-420.510 ~ 30---

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.25-12.7--

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.25-10 ~ 36--

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.25---10 ~ 25

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.25--10-

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.2512.7---

-

1 Piece(s) 8 Day(s) 106.4Shape B-440.2510 ~ 30---

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.31-12.7--

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.31-10 ~ 36--

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.31---10 ~ 25

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.31--10-

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.3112.7---

-

1 Piece(s) 8 Day(s) 107.9Shape B-440.3110 ~ 30---

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Basic Information

Type Timing Pulleys Belt Type XL Material Aluminum Alloy
Surface Treatment Clear Anodize

Tech Support