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Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Standard Belt S2M (40S2M772G)

On Sale Till 31/03/2025

MITSUBOSHI BELTING

Standard rubber and urethane timing belt with a smooth meshing round tooth shape.
[Features]
·A product with a wide variety of tooth profiles and size variations, with excellent versatility and availability.
·The belt is supple and can be used with a small pulley diameter.
·Smooth engagement and quiet operation are possible.
·Can be used with low axial load.
[Application]
·Ideal for office equipment, vending machines, electronic application equipment, measuring instruments, home appliances, etc.

(i)Caution

Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

Part Number

Configured Part Number is shown.

40S2M772G

Product Specifications
Part Numbers
Catalog

INDEX

Basic specifications and features of the product

Application methods and use cases

Cautions/prohibitions

Drawing

Standard belt size

Belt tooth pattern (Super Torque S2M)

Standard belt size

Product Specifications

Super Torque S2M Specifications

Super Torque (G / U) Timing Belt

Standard rubber and urethane timing belt with a smooth meshing round tooth shape.
A product with a wide variety of tooth profiles and size variations, with excellent versatility and availability.

Relationship between belt width and pulley width

Belt-shaped	Belt width		Pulley tooth width (mm)
Belt-shaped	Nominal	Width (mm)	With flange	No Flange
S2M	40	4	5	9
	60	6	7	11
	100	10	11	15

Belt width tolerance

Super Torque belt width tolerance

Belt width (mm)	Belt Nominal width	Belt length [Upper nominal length, lower length (mm)]
Belt width (mm)	Belt Nominal width	36 to 330 91.44 to 838.20	331 to 660 838.21 to 1676.40	661 to 1700 1676.41 to 4318.00
3.4 to 11.4	025,031 037	+0.3 －0.6	+0.3 －0.6	+0.3 －0.6
11.5 to 38.1	050,075 100,150	±0.6	±0.6	±0.6
38.2 to 50.8	200	±0.6	±1.0	+1.0 －1.3
50.9 to 76.2	300	+1.3 －1.6	±1.6	+1.6 －2.0

Trapezoidal belt width tolerance

Belt width (mm)	Belt length (mm)
Belt width (mm)	351 or less	Over 351 and 840 or less	Over 840 and 1,680 or less	More than 1,680
3 or less	+0.3 －0.4	+0.3 －0.4	+0.3 －0.4	+0.3 －0.4
Over 3 and 10 or less	+0.3 －0.6	+0.3 －0.6	+0.3 －0.6	+0.3 －0.6
Over 10 and 40 or less	±0.6	±0.6	±0.6	±0.6
Over 40 and 50 or less	±0.6	±0.6	±1.0	+1.0 －1.3
Over 50 and 75 or less	+1.0 －1.3	+1.0 －1.3	±1.3	+1.3 －1.6
Over 75 and 100 or less	±1.3	±1.3	+1.3 －1.6	±1.6
Over 100	+1.3 －1.6	±2.0	+2.0 －2.3	+2.0 －2.6

Timing belt structure

G type / GB type
* GB (bareback) type: Clean operation is possible with little scattering of rubber powder.

Structural features and compatible conditions

Widely usable for general industry.
Can also be used for high loads.
Standard belts can be used in the range of -30 to +80°C. If you want heat resistance up to 100°C, please use a heat-resistant belt.
The standard belt is conductive. (Electrical resistance value: 6 MΩ or less)
In order to prevent the belt from shifting, the tension body uses S-twist and Z-twist alternately.

Timing belt system table

S2M standard transmission capacity table

Belt width per 4.0 mm (Unit: W)

S2M allowable torque table

Belt width per 4.0 mm (Unit: N cm)

Standard table

Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	Whether or not of production
Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	GB	U
S2M 66	33	66	○	—
S2M 72	36	72	○	—
S2M 74	37	74	○	—
S2M 76	38	76	○	—
S2M 78	39	78	○	—
S2M 80	40	80	○	○
S2M 84	42	84	○	—
S2M 86	43	86	○	—
S2M 88	44	88	○	—
S2M 90	45	90	○	○
S2M 98	49	98	○	○
S2M 100	50	100	○	○
S2M 102	51	102	○	—
S2M 104	52	104	○	—
S2M 106	53	106	○	—
S2M 108	54	108	○	—
S2M 110	55	110	○	—
S2M 112	56	112	○	○
S2M 114	57	114	○	○
S2M 116	58	116	○	—
S2M 118	59	118	○	○
S2M 120	60	120	○	○
S2M 122	61	122	○	○
S2M 124	62	124	○	—
S2M 126	63	126	○	○
S2M 128	64	128	○	—
S2M 130	65	130	○	○
S2M 132	66	132	○	—
S2M 134	67	134	○	—
S2M 136	68	136	○	—
S2M 138	69	138	○	○
S2M 140	70	140	○	○
S2M 142	71	142	○	—
S2M 144	72	144	○	○
S2M 146	73	146	○	—
S2M 148	74	148	○	—
S2M 150	75	150	○	—
S2M 152	76	152	○	○
S2M 156	78	156	○	—
S2M 158	79	158	○	○
S2M 160	80	160	○	○
S2M 164	82	164	○	○
S2M 166	83	166	○	○
S2M 168	84	168	○	—
S2M 170	85	170	○	—
S2M 172	86	172	○	○
S2M 174	87	174	○	—
S2M 176	88	176	○	—
S2M 178	89	178	○	—
S2M 180	90	180	○	—

Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	Whether or not of production
Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	GB	U
S2M 182	91	182	○	—
S2M 184	92	184	○	—
S2M 186	93	186	○	—
S2M 188	94	188	○	—
S2M 190	95	190	○	○
S2M 192	96	192	○	—
S2M 194	97	194	○	○
S2M 196	98	196	○	—
S2M 198	99	198	○	—
S2M 200	100	200	○	○
S2M 202	101	202	○	—
S2M 204	102	204	○	—
S2M 206	103	206	○	—
S2M 208	104	208	○	—
S2M 210	105	210	○	○
S2M 212	106	212	○	○
S2M 214	107	214	○	—
S2M 216	108	216	○	—
S2M 218	109	218	—	○
S2M 220	110	220	○	○
S2M 224	112	224	○	○
S2M 226	113	226	○	—
S2M 230	115	230	○	○
S2M 232	116	232	○	—
S2M 234	117	234	○	—
S2M 236	118	236	○	○
S2M 238	119	238	○	—
S2M 240	120	240	○	○
S2M 242	121	242	—	○
S2M 244	122	244	○	○
S2M 246	123	246	○	○
S2M 248	124	248	○	—
S2M 250	125	250	○	○
S2M 252	126	252	○	—
S2M 254	127	254	○	—
S2M 256	128	256	○	—
S2M 258	129	258	○	—
S2M 260	130	260	○	○
S2M 262	131	262	○	—
S2M 264	132	264	○	—
S2M 266	133	266	○	—
S2M 268	134	268	○	—
S2M 270	135	270	○	—
S2M 272	136	272	○	—
S2M 276	138	276	○	—
S2M 278	139	278	○	—
S2M 280	140	280	○	○
S2M 284	142	284	○	—
S2M 286	143	286	○	—
S2M 288	144	288	○	—

Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	Whether or not of production
Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	GB	U
S2M 290	145	290	○	○
S2M 292	146	292	○	—
S2M 296	148	296	○	—
S2M 300	150	300	○	—
S2M 302	151	302	○	—
S2M 304	152	304	○	—
S2M 306	153	306	○	—
S2M 308	154	308	○	—
S2M 310	155	310	○	—
S2M 312	156	312	○	—
S2M 316	158	316	○	—
S2M 318	159	318	○	—
S2M 320	160	320	○	○
S2M 322	161	322	○	—
S2M 324	162	324	○	—
S2M 326	163	326	○	—
S2M 328	164	328	○	—
S2M 330	165	330	○	○
S2M 334	167	334	○	—
S2M 338	169	338	○	—
S2M 340	170	340	○	—
S2M 342	171	342	○	—
S2M 344	172	344	○	—
S2M 350	175	350	○	—
S2M 354	177	354	○	—
S2M 360	180	360	○	○
S2M 364	182	364	○	—
S2M 370	185	370	○	○
S2M 372	186	372	○	—
S2M 374	187	374	○	—
S2M 376	188	376	○	—
S2M 380	190	380	○	—
S2M 386	193	386	○	—
S2M 390	195	390	○	—
S2M 396	198	396	○	○
S2M 400	200	400	○	—
S2M 402	201	402	○	—
S2M 408	204	408	○	—
S2M 410	205	410	○	—
S2M 420	210	420	○	—
S2M 426	213	426	○	—
S2M 430	215	430	○	—
S2M 434	217	434	○	—
S2M 436	218	436	○	○
S2M 438	219	438	○	—
S2M 440	220	440	○	—
S2M 442	221	442	○	—
S2M 444	222	444	○	—
S2M 448	224	448	○	○
S2M 452	226	452	○	—
S2M 456	228	456	○	—
S2M 460	230	460	○	—
S2M 464	232	464	○	—
S2M 468	234	468	○	—
S2M 474	237	474	○	—
S2M 476	238	476	○	—
S2M 480	240	480	○	—
S2M 486	243	486	○	○
S2M 488	244	488	—	○
S2M 494	247	494	○	—
S2M 500	250	500	○	—
S2M 520	260	520	○	○
S2M 524	262	524	○	—

Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	Whether or not of production
Belt nominal length	Number of teeth	Belt pitch Circumference length (mm)	GB	U
S2M 530	265	530	○	—
S2M 550	275	550	○	—
S2M 560	280	560	○	○
S2M 572	286	572	○	○
S2M 580	290	580	—	○
S2M 586	293	586	○	—
S2M 594	297	594	○	—
S2M 600	300	600	○	—
S2M 630	315	630	○	○
S2M 638	319	638	○	—
S2M 648	324	648	○	—
S2M 656	328	656	○	—
S2M 660	330	660	○	—
S2M 672	336	672	○	—
S2M 676	338	676	○	—
S2M 694	347	694	○	—
S2M 710	355	710	○	—
S2M 726	363	726	○	—
S2M 740	370	740	○	—
S2M 752	376	752	○	—
S2M 772	386	772	○	—
S2M 778	389	778	○	—
S2M 796	398	796	○	—
S2M 800	400	800	○	—
S2M 810	405	810	○	—
S2M 822	411	822	○	—
S2M 826	413	826	○	—
S2M 828	414	828	○	—
S2M 848	424	848	○	—
S2M 856	428	856	○	—
S2M 862	431	862	○	—
S2M 866	433	866	○	—
S2M 880	440	880	○	—
S2M 882	441	882	○	—
S2M 898	449	898	○	—
S2M 900	450	900	○	—
S2M 910	455	910	○	—
S2M 930	465	930	○	—
S2M 944	472	944	○	—
S2M 950	475	950	○	—
S2M 976	488	976	○	—
S2M 984	492	984	○	○
S2M 1016	508	1,016	○	—
S2M 1032	516	1,032	—	○
S2M 1062	531	1,062	○	—
S2M 1064	532	1,064	○	—
S2M 1066	533	1,066	○	—
S2M 1100	550	1,100	○	—
S2M 1136	568	1,136	○	—
S2M 1140	570	1,140	○	—
S2M 1148	574	1,148	○	—
S2M 1196	598	1,196	○	○
S2M 1224	612	1,224	○	—
S2M 1250	625	1,250	○	○
S2M 1274	637	1,274	○	—
S2M 1290	645	1,290	○	—
S2M 1330	665	1,330	○	—
S2M 1420	710	1,420	○	—
S2M 1516	758	1,516	○	—
S2M 1524	762	1,524	○	—
S2M 1878	939	1,878	○	—
S2M 2130	1,065	2,130	○	—

Example of use

About belt installation

1. Turn off the machine's power supply

2. Confirmation in the same plane

Adjust the X dimension so that it is as close to 0 (zero) as possible. Apply a straight edge to the side of the pulley and make sure the pair of pulleys are in the same plane.

3. Reduce the distance between axes

Loosen the bolts such as the slide base and shorten the distance between the shafts until the belt is comfortably applied.

4. Tense the belt

Align the teeth of the belt with the tooth groove of pulley and slowly pull the slide base, etc., to give tension to the belt. Since the belt is a little short when there is no tension, the belt and pulley may not be completely engaged with a pulley with a large number of teeth, so pull slowly that there is no defective part of the belt and pulley.

5. Pull the belt to the specified tension

Tighten the belt so that the deflection load when the center of the belt span (the part where the belt is not applied to the pulley) is pushed in by a certain amount (span length 16/1,000) is the value calculated from the above formula.

6. Alignment readjustment

With the belt stretched, please check the alignment again using the straight edge, and if there is any deviation, remove the belt and readjust.
Especially in the case of one-sided bearings, the shaft may bend during operation and the belt may bend to the opposite side of the bearing. In this case, please correct the stage parallelism of the axis by the amount of deflection in advance.

7. Firmly fix the slide base, etc., so that it does not move

8. Check the engagement

Slowly rotate the pulley to make sure the belt and pulley are firmly engaged. If the belt does not fit tightly, please check the following.
The belt is too tight or too loose
Abnormal outer diameter of pulley: The outer diameter has become smaller due to wear, etc.
The shape of the pulley and the shape of the belt do not match

How to install the tension pulley

1. Conditions for using the tension pulley

Please use the tension pulley only when it is unavoidable due to the following functions.

·When using with fixed shafts
If the tension cannot be adjusted by the distance between the shafts, please add a tension pulley to adjust the tension.

·When the number of meshing teeth of the small pulley becomes small, such as when the gear ratio is large and you want to increase the number of meshing teeth of the small pulley, or when the gear ratio is large, add a tension pulley to increase the number of meshing teeth.

2. Installation of tension pulley

Please adjust the alignment of the tension pulley accurately. Also, please attach it to the loose side while driving.

·Inner tension pulley
When using the tension pulley from the inside, please use a pulley diameter larger than the minimum pulley diameter in the catalog.

The tension pulley from the inside should be on the loose side and close to the large pulley.
Please use a toothed pulley for the tension pulley.

·Outer tension pulley
When using the tension pulley from the outside, please use a pulley diameter that is 20% or more larger than the minimum pulley diameter in the catalog.

When using the tension pulley from the outside, please make sure it is on the loose side and close to the small pulley.
The bending angle of the belt should be 140° or more.
Please use a flat pulley without a crown for the tension pulley.
Please avoid using the outer idler for urethane belts.

Timing belt replacement time

Tooth rubber / tooth tip / tooth cloth (reinforcing cloth) / tooth bottom / tooth surface / core line

When the tooth cloth is worn and the rubber and core wire are exposed / When the back rubber of the belt is cracked due to increased hardness, etc. / When the classic is generated at the tooth root of the belt / When the belt side surface is damaged due to wear / tooth lacking / back wearing / core wire cutting

Cautions/prohibitions

Items to check during test run

Please test run the belt for a few minutes and check the following items. If any of the following phenomena occur, please take countermeasures.
Please never bring your hands or body close to the pulley or belt while driving. Also, please be sure to check that the belt is completely stopped and then turn off the power supply before performing inspections, etc.

1. Is the belt riding on the flange of the pulley? (Countermeasure) Adjust the alignment of the pulley.
2. Is the belt resonating? (Countermeasure) Change the initial tension (mounting tension) of the belt, or install a new pulley (flat pulley) so that the belt is lightly pressed from the back of the belt.
3. Does the belt have jumping (a phenomenon in which the teeth of the belt jump over the teeth of the pulley)? (Countermeasure) Increase the initial tension (mounting tension) of the belt. If jumping occurs even if the belt is stretched strongly, the belt may be under more force than the allowable transmission, so reconsider the design.
4. Does the belt tension drop abnormally? (Countermeasure) Check if the slide base, etc., is loose. Also, it is possible that the belt did not mesh properly when it was attached, so please re-tighten the belt.

About daily inspection

Please pay attention to the following items for daily inspection of the belt.

1. Is the belt mounting tension extremely low? The belt mounting tension will drop slightly due to the familiarity of the pulley within a few hours after operation. After mounting, please rotate the belt about 10 times, let it fit in, and then stretch it with the specified tension. There is no need to re-tension after that. Re-tensioning the timing belt may result in poor engagement and shorten the belt lifespan.
2. Are there any cracks on the back of the belt?
3. Are there any cracks in the teeth of the belt?
4. Is the cloth on the bottom of the belt between the teeth worn to expose the rubber layer or core wire?
5. Is there a wear or damage in the end face of the belt due to rubbing against the flange?
6. Is the belt meandering significantly when traveling? In the case of forward rotational or reverse rotational operation, the belt may move in the pulley, but this is not a malfunction.
7. Is there water or oil on the belt?
8. Is the foundation loose?
9. Is there rust on the tooth surface or flange of the pulley?
10. Isn't it noisier than usual?

As mentioned above, please check at the time of inspection.

: 30; 45; 60

Part Number
40S2M772G

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Belt Material	Core Wire Material	Nominal Width W (mm) (mm)	Belt Length (mm)	Circumference length (mm)	The Number of Teeth
	SGD 6.39	1 Piece(s)		9 Day(s) or more	10	Rubber Belt	Glass Fiber	4	772	-	386

Basic Information

Belt Shape	Closed End	Belt Tooth Surface	Standard (One Side)	Belt Series	S2M
Belt Shape Type	Round tooth profile super torque	Transmission Torque	High Torque

Please check the type/dimensions/specifications of the part 40S2M772G in the Standard Belt S2M series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Circumference length(mm)
74

76

78

80

86

90

92

94

100

106

110

112

116

118

122

124

126

128

130

134

138

140

142

144

150

152

156

160

164

166

172

176

180

186

190

194

196

200

204

210

212

214

218

220

224

230

234

236

238

240

242

244

246

250

256

260

262

266

268

276

280

284

290

300

304

308

312

316

318

320

322

324

326

328

330

340

342

354

360

370

374

386

390

396

400

420

436

448

460

486

488

500

520

560

572

580

600

630

638

656

710

740

778

800

810

866

900

984

1032

1196

1224

1250
Clear
type
- S2M
Clear
Belt Material
- Rubber Belt
- Polyurethane Belt
Clear
Core Wire Material
- Glass Fiber
- Aramid
Clear
Nominal Width W (mm)(mm)
4

6

10
Clear
Belt Length(mm)
66

72

76

78

80

84

90

94

98

100

104

106

110

112

114

116

118

120

122

124

126

128

130

134

136

138

140

142

144

146

148

152

156

160

164

166

168

170

172

174

176

180

182

184

186

188

190

192

194

198

200

202

204

206

208

210

212

214

216

218

220

224

226

230

234

236

240

242

244

246

248

250

252

254

256

260

264

266

270

276

278

280

286

290

292

296

300

302

306

308

310

320

322

324

328

330

338

340

344

350

360

370

372

380

396

400

402

408

410

420

426

430

436

444

448

452

456

460

474

480

486

488

494

500

520

524

550

560

572

580

586

594

600

630

638

660

672

676

694

710

740

752

772

778

796

800

822

826

828

848

856

882

898

900

950

976

984

1016

1032

1062

1100

1140

1148

1196

1250
Clear
The Number of Teeth
33

36

37

38

39

40

42

43

45

46

47

49

50

52

53

55

56

57

58

59

60

61

62

63

64

65

67

68

69

70

71

72

73

74

75

76

78

80

82

83

84

85

86

87

88

90

91

92

93

94

95

96

97

98

99

100

101

102

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All

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Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Similar Part Numbers

Part Number
100S2M116G
100S2M1196G
100S2M140G
40S2M778G
40S2M78G
40S2M796G

Standard Unit Price	Minimum order quantity	Days to Ship	RoHS	Belt Material	Core Wire Material	Nominal Width W (mm) (mm)	Belt Length (mm)	Circumference length (mm)	The Number of Teeth
SGD 6.48	1 Piece(s)	4 Day(s)	10	Rubber Belt	Glass Fiber	10	116	116	58
SGD 14.04	1 Piece(s)	9 Day(s) or more	10	Rubber Belt	Glass Fiber	10	1196	-	598
SGD 6.86	1 Piece(s)	9 Day(s) or more	10	Rubber Belt	Glass Fiber	10	140	-	70
SGD 6.39	1 Piece(s)	9 Day(s) or more	10	Rubber Belt	Glass Fiber	4	778	-	389
SGD 5.00	1 Piece(s)	4 Day(s)	10	Rubber Belt	Glass Fiber	4	78	78	39
SGD 6.39	1 Piece(s)	9 Day(s) or more	10	Rubber Belt	Glass Fiber	4	796	-	398

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Standard Belt S2M (40S2M772G)

(i)Caution

INDEX

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Product Specifications

Super Torque S2M Specifications

Belt width tolerance

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