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Keyless High Torque Timing Pulleys - S8M

Keyless High Torque Timing Pulleys - S8M

[Material]
· Pulley: Extra super duralumin aluminum alloy, S45C equivalent
· Flange: Aluminum alloy, SPCC
· Bushing: S45C equivalent
[Surface treatment]
· Clear anodize, hard clear anodize (firm hardness 300HV~), electroless nickel plating, black oxide

(i)Caution

  • Regarding RoHS compliance: The products are RoHS non-compliant only when alteration BMC is selected. The products are RoHS-compliant when BMC is not selected. As some parts used in the alteration are RoHS non-compliant, the RoHS notation on this page has been changed to non-compliant. "Non-compliant" is also indicated in the certificate due to information on the left. Since there are no changes to the product, please contact us if you need a Certificate of RoHS Compliance for a part number that does not have alteration BMC selected.
  • Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.
■S8M
● Pulley Shape
Shape E
Shape F
Standard Tooth Profile
Tooth groove dimensions slightly vary according to the number of teeth. (Pitch: 8.0mm)
[ ! ] Surface treatment may not be applied to the shaft bores.
[!] Two types of bushings are available: standard type (ST bushings) and short type (SH bushings).
[ ! ] Machined flange for 72 toothed pulleys.
[ ! ] Unless otherwise specified except for teeth and F dimensions, the dimension tolerance conforms to JIS B 0405 Class m.
Table 1: Select Shaft Bore Dia.
dH7Max. allowable torque N⋅mD(L)
ST BushingSH BushingST BushingSH Bushing
124823323110.5
14733512
157836
16833713
178838
181544314
1916345
2017146
2218648
2420650
2521652
283535415.5
3038257
32412163595816.5
354511736361
386867019
4072571
427577420
4514908424.5
48160087
50166089
[ ! ] Electroless nickel plated bushing (alterations BMC, BMR) decreases maximum allowable torque and allowable thrust load by 20 to 30%.
■Belt Nominal Width / Dimensions
mmNominal
S8M150S8M250S8M300S8M400
A17283344
W22333849
TypePart number[M]Material*1[S] Surface Treatment
Belt width: 15 mmBelt width: 25 mmBelt width: 30 mmBelt width: 40 mmPulleyFlangeBushingPulleyFlangeBushing
S8M150S8M250S8M300S8M400
HTLAExtra Super Duralumin
Aluminum alloy
Aluminum alloyS45C EquivalentClear Anodize
HTLKHard Clear Anodized *2
HTPLS45C
equivalent
SPCCS45C EquivalentBlack Oxide Coating
HTLGElectroless nickel plating
*1The above materials and accessories might be changed to the ones equivalent to the originals. *2 Hard clear anodize: film hardness 300 HV or more

Specification Table

Part numberPulley ShapeShaft Bore Dia.
HTPL 60S8M300E40
Part number
Pulley
Shape
dH7 range 1 mm increments
P.DO.DFE
Shape E
Shape F
TypeNumber of TeethType
Nominal Width
S8M150S8M250S8M300S8M400S8M150S8M250S8M300S8M400
ST BushingST BushingST BushingST BushingSH
Bushing
ST Bushing: 12-30
SH Bushing: 32,35
ST Bushing: 15-32
SH Bushing: 35
ST Bushing
HTLA

HTLK

HTPL

HTLG
18S8M150

S8M250

S8M300

S8M400
E

F
12121245.8444.465236
1912,14,1512,14,15151212,14,151548.3847.015540
2012,14-1712,14-1715-171212,14,151550.9349.565849
2112,14-1712,14-1715-1716,171212,14-1715-1716,1753.4852.106145
2256.0254.65
2358.5757.206750
2461.1259.74
2512,14-20,22,24,2515-20,22,24,2516-20,22,24,251212,14-20,22,24,2515-20,22,24,2516-20,22,24,2563.6662.297056
2614-20,22,24,2514-20,22,24,2515-20,22,24,2516-20,22,24,2514-20,22,24,2515-20,22,24,2516-20,22,24,2566.2164.847458
2768.7567.388060
2871.3069.93
2973.8572.48
3014-20,22,24,25,28,30,3214-20,22,24,25,28,30,3215-20,22,24,25,28,30,3216-20,22,24,25,28,30,3214-20,22,24,25,28,30,3215-20,22,24,25,28,30,3216-20,22,24,25,28,30,3276.3975.028767
3178.9477.57
3281.4980.12
3384.0382.66
3416-20,22,24,25,28,30,32,3516-20,22,24,25,28,30,32,3516-20,22,24,25,28,30,32,3516-20,22,24,25,28,30,32,3586.5885.219575
3589.1387.75
3616-20,22,24,25,28,30,32,35,3816-20,22,24,25,28,30,32,35,3891.6790.309980
3794.2292.85
3816-20,22,24,25,28,30,32,35,38,40,4216-20,22,24,25,28,30,32,35,38,40,4296.7795.3910484
3999.3197.9411190
4020,22,24,25,28,30,32,35,38,40,4220,22,24,25,28,30,32,3520,22,24,25,28,30,32,3520,22,24,25,28,30,32,35,38,40,42101.86100.49
41104.41103.03
42106.95105.58
43109.50108.13119100
44112.05110.67
45114.59113.22123102
46117.14115.77
47119.68118.31127105
48122.23120.86
49124.78123.41135115
5020,22,24,25,28,30,32,35,38,40,42,45,48,5020,22,24,25,28,30,32,3520,22,24,25,28,30,32,3520,22,24,25,28,30,32,35,38,40,42127.32125.95
51129.87128.50
52132.42131.04140120
53134.96133.59
54137.51136.14144125
55140.06138.68
56142.60141.23152130
57145.15143.78
58147.70146.32160140
59150.24148.87
60152.79151.42
7220,22,24,25,28,30,32,35,38,40,42,45,48,5020,22,24,25,28,30,32,3520,22,24,25,28,30,32,35,38,40,42,45,48,50183.35181.97190170

Alterations

Part numberPulley ShapeShaft Bore Dia.(BMC, etc.)
HTLA25S8M250F25FC65
 
AlterationsSurface TreatmentFlange CutNo FlangeSingle Flange
CodeBMC·BMRFCNFCLFC·RFC
Spec.Applies electroless nickel plating on a bushing.
(Antirusting treatment is applied to screws.)
[ ! ] Electroless nickel plating decreases bushing's allowable torque by 20 to 30%.
BMC: Not RoHS Compliant (Screw: SCM435 Dacrotized Treatment)
BMR: RoHS Compliant (Screw: SCM435 GeoMet Coating)

Part Number 

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Part Number
HTLA18S8M150-E-12
HTLA18S8M250-E-12
HTLA18S8M250-F-12
HTLA19S8M150-E-[12,​14,​15]
HTLA19S8M150-F-12
HTLA19S8M250-E-[12,​14,​15]
HTLA19S8M250-F-[12,​14,​15]
HTLA19S8M300-E-15
HTLA19S8M300-F-15
HTLA20S8M150-E-[12,​14,​15,​16,​17]
HTLA20S8M150-F-12
HTLA20S8M250-E-[12,​14,​15,​16,​17]
HTLA20S8M250-F-[12,​14,​15]
HTLA20S8M300-E-[15,​16,​17]
HTLA20S8M300-F-15
HTLA21S8M150-E-[12,​14,​15,​16,​17]
HTLA21S8M150-F-12
HTLA21S8M250-E-[12,​14,​15,​16,​17]
HTLA21S8M250-F-[12,​14,​15,​16,​17]
HTLA21S8M300-E-[15,​16,​17]
HTLA21S8M300-F-[15,​16,​17]
HTLA21S8M400-E-[16,​17]
HTLA21S8M400-F-[16,​17]
HTLA22S8M150-E-[12,​14,​15,​16,​17]
HTLA22S8M150-F-12
HTLA22S8M250-E-[12,​14,​15,​16,​17]
HTLA22S8M250-F-[12,​14,​15,​16,​17]
HTLA22S8M300-E-[15,​16,​17]
HTLA22S8M300-F-[15,​16,​17]
HTLA22S8M400-E-[16,​17]
HTLA22S8M400-F-[16,​17]
HTLA24S8M150-E-[12,​14,​15,​16,​17]
HTLA24S8M150-F-12
HTLA24S8M250-E-[12,​14,​15,​16,​17]
HTLA24S8M250-F-[12,​14,​15,​16,​17]
HTLA24S8M300-E-[15,​16,​17]
HTLA24S8M300-F-[15,​16,​17]
HTLA24S8M400-E-[16,​17]
HTLA24S8M400-F-[16,​17]
HTLA25S8M150-E-[12,​14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M150-F-12
HTLA25S8M250-E-[12,​14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M250-F-[12,​14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
HTLA25S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
HTLA26S8M400-F-[16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M150-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M250-E-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M250-F-[14,​15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M300-E-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M300-F-[15,​16,​17,​18,​19,​20,​22,​24,​25]
HTLA28S8M400-E-[16,​17,​18,​19,​20,​22,​24,​25]
Part NumberStandard Unit PriceMinimum order quantityVolume DiscountDays to ShipRoHSBelt Width Used
(mm)
No. of Teeth
(T)
Pulley Shape Material Surface Treatment Shaft Bore Dia. [d]
(mm)

-

1 Piece(s) 10 Day(s) or more 101518Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102518Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102518Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 14 Day(s) 101519Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 15

-

1 Piece(s) 10 Day(s) or more 101519Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102519Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 15

-

1 Piece(s) 10 Day(s) or more 102519Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 15

-

1 Piece(s) 10 Day(s) or more 103019Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15

-

1 Piece(s) 10 Day(s) or more 103019Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15

-

1 Piece(s) 14 Day(s) 101520Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 14 Day(s) 101520Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102520Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 102520Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 15

-

1 Piece(s) 10 Day(s) or more 103020Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 14 Day(s) 103020Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15

-

1 Piece(s) 10 Day(s) or more 101521Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 101521Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102521Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 102521Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 103021Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 103021Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 104021Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 10 Day(s) or more 104021Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 14 Day(s) 101522Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 101522Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 10 Day(s) or more 102522Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 102522Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 103022Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 103022Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 104022Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 10 Day(s) or more 104022Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 14 Day(s) 101524Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 14 Day(s) 101524Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 14 Day(s) 102524Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 14 Day(s) 102524Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 17

-

1 Piece(s) 10 Day(s) or more 103024Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 103024Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 17

-

1 Piece(s) 10 Day(s) or more 104024Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 10 Day(s) or more 104024Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 17

-

1 Piece(s) 14 Day(s) 101525Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 25

-

1 Piece(s) 14 Day(s) 101525Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12

-

1 Piece(s) 14 Day(s) 102525Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 25

-

1 Piece(s) 14 Day(s) 102525Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize12 ~ 25

-

1 Piece(s) 10 Day(s) or more 103025Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 14 Day(s) 103025Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 10 Day(s) or more 104025Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 25

-

1 Piece(s) 10 Day(s) or more 104025Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 25

-

1 Piece(s) 14 Day(s) 101526Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 14 Day(s) 102526Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 14 Day(s) 102526Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 10 Day(s) or more 103026Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 10 Day(s) or more 103026Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 10 Day(s) or more 104026Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 25

-

1 Piece(s) 10 Day(s) or more 104026Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 25

-

1 Piece(s) 14 Day(s) 101528Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 14 Day(s) 102528Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 14 Day(s) 102528Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize14 ~ 25

-

1 Piece(s) 10 Day(s) or more 103028Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 10 Day(s) or more 103028Shape F[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize15 ~ 25

-

1 Piece(s) 10 Day(s) or more 104028Shape E[Aluminum] Extra Super Duralumin Series Aluminum AlloyClear Anodize16 ~ 25

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Basic Information

Type Keyless Bushings Belt Type S8M Timing Pulley / Idler Pulleys

Tech Support

Factory Automation, Electronics, Tools, & MRO (Maintenance, Repair and Operations)
Tel:021-8990-4102 / FAX:021-8990-5803
8:30am - 5:30pm (Monday - Friday)