Keyless High Torque Timing Pulleys - S3M - MechaLock Standard Type Incorporated (with Centering Function)

Brand :

MISUMI

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.
Please note that the swaged flange options, NFC, RFC, and LFC, are not reflected in the CAD data.

Product Description

[Material]
· Pulley: Extra super duralumin aluminum alloy, aluminum alloy
· Flange: Aluminum alloy
· MegaLock: Aluminum alloy, S45C equivalent
[Surface treatment]
· Clear anodize, hard clear anodize (firm hardness 300HV~)

■S3M

● Pulley Shape

Shape E

Shape F

Standard Tooth Profile

HHAA

HHT□

HHAA

HHT□

Tooth groove dimensions slightly vary according to the number of teeth. (Pitch: 3.0 mm)
*3 When d = 6, d + 2.5; and when d = 15, d + 3.5.
*4 For the combination of nominal width and MechaLock inner diameter shown in Table 2, the MechaLock mounting holes are not stepped holes, but are through holes of the MechaLock outer diameter. ([!] Shape E only)
[ ! ] Surface treatment may not be applied to the shaft bores.
[ ! ] Flange is installed.
[ ! ] For orders with no flange, please specify the alteration NFC.
[ ! ] Compatible with S3M type from Mitsuboshi Belting Ltd. as well as Bando Chemical Industries Ltd.
[ ! ] 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.

d_H7	HHAA					HHTA·HHTK	HHTAS·HHTS	D₁	(L)
d_H7	Max. allowable torque (N⋅m)	D₂	B	G	n	Max. allowable torque (N⋅m)		D₁	(L)
6	4	17	4	20	0.5	12.7	—	21.5	6
8	6	19	5	22	0.5	19.6	10.7	23.5
10	8	21	5	24	0.5	27.5	12.7	25.5
12	12	24	6	27	1.0	44.1	24.5	28.5	6.5
14	18	26	6	29	1.0	63.7	28.4	30.5
15	25	28	7	31	1.2	80.4	30.4	31.5
16	—	—	—	—	—	83.3	—	33
17	—	—	—	—	—	92.2	—	33.5
18	—	—	—	—	—	95.1	—	34.5
19	—	—	—	—	—	98.1	—	35.5

Table 2: pulley through hole combination

Nominal Width	MechaLock inner dia. d_H7
S3M100	8·10·12·14

■Belt Nominal Width / Dimensions

mm	Nominal
mm	S3M100	S3M150
A	11	17
W	15	21
Y	－	14

■List of MechaLocks by part number

HHAA	HHTA	HHTK	HHTAS	HHTS
MLBA	MLM		MLHS

■Dimensional Tolerances
Without Command

Dimension Range		Tolerance (mm)
Over	or Less	Tolerance (mm)
0.5	3	±0.1
3	6	±0.1
6	30	±0.2
30	120	±0.3
120	400	±0.5

[ ! ]Compliant with JIS B 0405
Class m (intermediate).

■Mechalock bolt tightening torque (N⋅m)

type	MLBA	MLM	MLHS
d
6	0.9	3.9	2.7
8
10
12
14
15	1.5
16
17	‐
18
19
20		8.8	5.6
22
24
25
28
30
32
35		15.7	9.6
38
40
42
45
48
50

Type	Part number		[M]Material ^*1			[S] Surface Treatment
	Belt Width: 10 mm	Belt width: 15 mm	Pulley	Flange	MechaLock	Pulley	Flange	MechaLock
	S3M100	S3M150
HHAA	●	●	2000 Series Aluminum alloy	Aluminum alloy	2000 Series Aluminum alloy	Clear Anodize
HHTA	●	●	Extra Super Duralumin Aluminum alloy	Aluminum alloy	S45C equivalent	Clear Anodize		-
HHTK	●	●				Hard clear anodize ^*2		-
HHTAS	●	●			SUS304 Equivalent	Clear Anodize		-
HHTS	●	-	SUS304	SUS304		-

*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