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Timing Pulleys Keyless/High Torque/S5M/With Standard Keyless Bushing (E-HHTA50S5M250-F-18)

Timing Pulleys Keyless/High Torque/S5M/With Standard Keyless Bushing E-HHTA50S5M250-F-18
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MISUMI

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MISUMI

Part Number

Configured Part Number is shown.

E-HHTA50S5M250-F-18

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
MISUMI Keyless Timing Pulley S5M with Standard Keyless Bushing Specifications Drawing
There may be no surface treatment in the shaft bore.
Values in ( ) for dimension Y apply to Shaft Bore Dia. 12 or more.
The flange is riveted.
Specifications Overview
Part Number Material Surface Treatment
Belt Width 10mmBelt Width 15mmBelt Width 25mmPulleyFlangeKyless BushingPulleyFlangeKyless Bushing
A: 11  W: 16A: 17 W: 22 Y: 14A: 27 W: 32 Y: 14(22・23.5)
E-HHAA□□S5M100E-HHAA□□S5M150E-HHAA□□S5M250Aluminum Alloy 2024Aluminum Alloy 5056A2014Clear Anodized
E-HHTA□□S5M100E-HHTA□□S5M150E-HHTA□□S5M250Aluminum Alloy 7A09Aluminum Alloy 5056Equivalent to S45CClear Anodized-
Film hardness of hard clear anodize is 300HV~.
If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating on other pages.
Specification Table
Part NumberPulley
Shape		dH7 range (select Shaft Bore Dia. according to Table 1)P.D.O.D.FE
E-HHAAE-HHTA
TypeNumber of TeethType & Nominal WidthS5M100S5M150S5M100S5M150S5M250
Shape EShape FShape EShape EShape FShape EShape F
E-HHAA
E-HHTA		20S5M100
＊A：11
＊W：16

S5M150
＊A：17
＊W：22
＊Y：14

S5M250
＊A：27
＊W：32
＊Y：14
(d12～22：Y＝22)
(d24～：Y＝23.5)		E
F		6------31.8330.873624
228------35.0134.054027
248・10-8888838.237.244530
258・10-8888839.7938.83
268・108・108・108・108・108・108・1041.3840.424835
288・108・108・108・108・108・108・1044.5643.6
3010・1210・12101010101047.7546.795236
3210~1510~1510~1410~141010~1410~1450.9349.975540
3410~1610~1610~1410~161010~1610~1654.1153.156145
3610~1610~1610~1410~161010~1610~1657.356.34
4010~1610~1610~1410~191010~1910~1963.6662.76750
44--12~1412~22-12~2212~2270.0369.077458
4812~1412~2212~2412~2476.3975.438363
5012~1412~2212~2812~2879.5878.628767
6012~1412~2212~3012~3095.4994.539980
7212~1412~2212~3512~30114.59113.63119100
Select Shaft Bore Dia. according to Table 1.
Refer to Table 1 for the performance of aluminum alloy keyless bushing and Details of Keyless Bushing for that of S45C equivalent keyless bushing.

■Table 1: Shaft Bore Dia. Selection
dH7E-HHAAE-HHTAD1(L)
Allowable max.
torque (N・m)		D2BGnAllowable max.
torque (N・m)
64174200.5---
86195220.519.623.56
108215240.527.525.5
121224627144.128.56.5
141826629163.730.5
1525287311.280.431.5
1626297321.283.333
17-----92.233.5
1895.134.5
1998.135.5
20216428
2225544
2436346
2539247
28441508.5
3050052
3253054
358836210
Product Features
Features of MISUMI Keyless Timing Pulleys
Feature 1: Keyless timing pulleys require no keyway machining, and round shaft and round hole can be used directly.
    Urgent design changes can be made due to the reduction of cutting and machining time.
MISUMI keyless timing pulleys can accommodate urgent design changes

Feature 2: Keyless timing pulleys are connected with bolts only, allowing for easy installation and removal.
    Equipment maintenance can be easily carried out without using a special tool. Parts are reusable, effectively reducing the cost.
MISUMI keyless timing pulleys are easy to install and remove

Feature 3: Keyless timing pulleys enable free alignment at any position during assembly.
    Alignment control is possible during assembly, thus eliminating the need to align the key and tooth in the design phase.
Keyless timing pulleys, free alignment

Feature 4: Keyless timing pulleys have no loosening. When a key is used, the keyway becomes loose, but there is no gap in the keyless bushing. It is therefore suitable for places where there are repeated forward and reverse rotations.
    Long-term high coaxiality connection can be achieved. Suitable for servo motors and other places where there are repeated forward and reverse rotations.
Keyless timing pulleys, no loosening

Feature 5: A notch is provided in the shoulder of the inner pulley to allow the inner bushing to be crimped against the bore of the coupling part by tightening the lock bolt.
    This enables positive control of the runout of the coupling end face and outer diameter, thus delivering a good centering effect.
    When the lock bolt is tightened, there is no axial movement of the pulley bore, and the product has no backlash.
Usage Method
■Mounting method for keyless timing pulleys
①Wipe off the stains on the shaft surface and apply a layer of lubricant or grease. (Do not use any lubricant or grease that contains molybdenum abrasion inhibiting agent.)
②Also wipe the contact surface between the timing pulley and the bushing, and apply lubricant or grease. In addition, the fastening bolt thread surface and bearing surface must be applied lubricant or grease.
③Insert the timing pulley and bushing into the shaft after temporary assembly. (Do not tighten the bushing directly with the bolt without putting it through the shaft.)
④After positioning is completed, tighten the bolts gently (about 1/4 of the specified tightening torque) and diagonally in sequence with a torque wrench.
⑤Tighten with increased tightening torque (about 1/2 of the specified tightening torque).
⑥Tighten again to the specified tightening torque.
⑦Tighten the fastening bolt circumferentially in sequence.

■Disassembly method for keyless timing pulleys
①Work with the unit at a complete stop.
②Loose the fastening bolt circumferentially in sequence
③Insert the bolt into the threaded hole for disassembly and evenly screw it in.
④When reinstalling, repeat the steps in “Installation”.
Precautions
① If there are requirements for rust prevention, give priority to products with surface treatment of electroless nickel plating on other pages.
 Please refer tosurface treatment and rust prevention methods
② When installing a keyless bushing, be sure to apply lubricant or grease to the shaft surface, the contact surface between the pulley and the bushing, and the fastening bolt.
 Otherwise it will not be securely tightened and may cause the shaft to idle.
③Tighten the bolt after inserting the bushing into the shaft. (If the bolts is tightened before inserting the bushing, it will cause deformation of the bushing.)
④Use a torque spanner to tighten the bolts.
⑤Do not use bolts other than those supplied.
Example of Use
MISUMI Keyless Timing Pulley Example
■Mechanism name
Dustproof Lifting Machine

■Mechanism function
Lifting machine for heavy workpieces
Use in dusty places

■Function of Keyless Timing Pulleys
Rotates ball screws by means of a keyless toothed timing belt, lifting and lowering the positioning stage

For details, please click Dustproof Lifting Machine
Application Industries
Smart Phones Medical Electronic & Electrical
MISUMI keyless timing pulleys are applicable to the smart phone industry MISUMI keyless timing pulleys are applicable to the medical industry MISUMI keyless timing pulleys are applicable to the electronics and electrical appliances industry
Automotive Robotics Lithium battery
MISUMI keyless timing pulleys are applicable to the automotive industry MISUMI keyless timing pulleys are applicable to the robotics industry MISUMI keyless timing pulleys are applicable to the lithium battery 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 Toothed Timing Belts and Timing Pulleys
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 toothed timing belts.
④Reference data on the replacement time of toothed timing belts.
⑤Data on dimensional tolerance of timing pulleys.


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  1. 1
Part Number
E-HHTA50S5M250-F-18
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipBelt Width Used
(mm) 		Number of Teeth
(T) 		Pulley Shape Material Shaft Bore Dia. d
(mm) 		Number of Teeth

1,072,181 IDR

1 Piece(s)Available 14 Day(s) 2538Shape F[Aluminum] Aluminum Alloy1850

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Basic Information

Type Keyless Bushings Belt Type S5M

Please check the type/dimensions/specifications of the part E-HHTA50S5M250-F-18 in the Timing Pulleys Keyless/High Torque/S5M/With Standard Keyless Bushing series.

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Specification/Dimensions

  • type

    • E-HHAA□□S5M
    • E-HHTA□□S5M

    Clear

  • Belt Width Used(mm)

    • 10
    • 15
    • 25

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  • Number of Teeth(T)

    • 10
    • 12
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 21
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 32
    • 34
    • 38
    • 40
    • 42
    • 44
    • 46
    • 48
    • 50
    • 60

    Clear

  • Pulley Shape

    • Shape E
    • Shape F

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  • Material

    • Aluminum
      • 2000 Series Aluminum Alloy
      • Aluminum Alloy

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  • Shaft Bore Dia. d(mm)

    • 6
    • 8
    • 10
    • 12
    • 14
    • 15
    • 16
    • 17
    • 18
    • 19
    • 20
    • 22
    • 24
    • 25
    • 28
    • 30
    • 32
    • 35

    Clear

  • Number of Teeth

    • 20
    • 22
    • 24
    • 25
    • 26
    • 28
    • 30
    • 32
    • 34
    • 36
    • 40
    • 44
    • 48
    • 50
    • 60
    • 72

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  • CAD

    • 2D
    • 3D

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Days to Ship

    • All
    • 14 Day(s) or Less

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