Timing Belts HTD 8M

MISUMI

**RoHS Compliant is available for some part numbers.
Please contact with MISUMI for detail effective date.

Timing Belts HTD8M
It is an arc tooth profile that has higher transmission power than the trapezoidal tooth timing belt.
This belt always uses for high torque transmission in an automation machine
[Features]
• Belt Shape: Closed End
• Belt Tooth Type: H8M (arc tooth profile) • Tooth Pitch: 8 mm.
• Belt Width: 20, 25, 30, 40, 50 and 85 mm.
• Circumference Length Shortest/Longest: 288 mm. and 5120 mm.
• Belt Operating Temperature Range: －10 to 90℃.
• Material:
Tooth rubber: Chloroprene
Core wire: Glass Fiber
Tooth surface protection layer: Nylon canvas
[Applications]
Suitable for use with a timing pulley in a transmission system in an automation machine
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Economy HTD 8M Timing Belt

Heavy-DutyLongevityReduced Vibration

- With a wider range of belt widths and lengths, our HTD 8M belts are designed to handle increased loads and higher torque requirements.

- Constructed with high-quality chloroprene rubber, these belts excel in resisting abrasion, oil, and grease, ensuring extended service life even in demanding environments.

- The unique arc tooth profile delivers higher power transmission compared to traditional trapezoidal profiles, ensuring optimal efficiency and reduced energy loss.

- The arc tooth profile contributes to minimal vibration and noise generation, creating a smoother and quieter operation.

- Engineered to function reliably in temperatures ranging from -10°C to 90°C, these belts offer versatility across various operating conditions.

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

Product Overview

Usually, timing pulleys and Timing Belt 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 Complete specifications Factory direct sales Original quality

Material
① Rear Rubber	② Tooth Rubber	③ Core Wire	④ Backing Cloth
Chloroprene	Chloroprene	Glass Fiber	Nylon Canvas

Specification Overview

Types	Belt Nominal Width		Tooth Pitch (mm)	Lr	H	h	PLD

H8M	200 (20mm) 300 (30mm) 500 (50mm)	250 (25mm) 400 (40mm) 850 (85mm)	8	5.15	6	3.38	0.686

Belt circumference length is core wire length.

Belt Operating Temperature Range: －10 to 90℃.

The model engraved on the back of the product is the manufacturer model.

For the transmission capacity and calculation and design method of economy series Timing Belt, please refer to the national standard (GB) design manual.

Part Number		Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
Type	Belt Number	Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
C－HTBN	112H8M	200 (20mm) 250 (25mm) 300 (30mm) 400 (40mm) 500 (50mm) 850 (85mm)	14	112
	184H8M		23	184
	280H8M		35	280
	288H8M		36	288
	304H8M		38	304
	312H8M		39	312
	320H8M		40	320
	328H8M		41	328
	336H8M		42	336
	344H8M		43	344
	352H8M		44	352
	360H8M		45	360
	368H8M		46	368
	376H8M		47	376
	384H8M		48	384
	392H8M		49	392
	400H8M		50	400
	408H8M		51	408
	416H8M		52	416
	424H8M		53	424
	432H8M		54	432
	440H8M		55	440
	448H8M		56	448
	456H8M		57	456
	464H8M		58	464
	472H8M		59	472
	480H8M		60	480
	488H8M		61	488
	496H8M		62	496
	504H8M		63	504
	512H8M		64	512
	520H8M		65	520
	528H8M		66	528
	536H8M		67	536
	544H8M		68	544
	552H8M		69	552
	560H8M		70	560
	568H8M		71	568
	576H8M		72	576
	584H8M		73	584
	592H8M		74	592
	600H8M		75	600
	608H8M		76	608
	616H8M		77	616
	624H8M		78	624
	632H8M		79	632
	640H8M		80	640
	648H8M		81	648
	656H8M		82	656
	664H8M		83	664
	672H8M		84	672
	680H8M		85	680
	688H8M		86	688
	696H8M		87	696
	704H8M		88	704
	712H8M		89	712
	720H8M		90	720
	728H8M		91	728
	736H8M		92	736
	744H8M		93	744
	752H8M		94	752
	760H8M		95	760
	768H8M		96	768
	776H8M		97	776
784H8M	98	784
792H8M	99	792
800H8M	100	800
808H8M	101	808
816H8M	102	816
824H8M	103	824
832H8M	104	832
840H8M	105	840
848H8M	106	848
856H8M	107	856
864H8M	108	864
872H8M	109	872
880H8M	110	880
888H8M	111	888
896H8M	112	896
904H8M	113	904
912H8M	114	912
920H8M	115	920
928H8M	116	928
936H8M	117	936
944H8M	118	944
952H8M	119	952
960H8M	120	960
968H8M	121	968
976H8M	122	976
984H8M	123	984
992H8M	124	992
1000H8M	125	1000
1008H8M	126	1008
1016H8M	127	1016
1024H8M	128	1024
1032H8M	129	1032
1040H8M	130	1040
1048H8M	131	1048
1056H8M	132	1056
1064H8M	133	1064
1072H8M	134	1072
1080H8M	135	1080
1088H8M	136	1088
1096H8M	137	1096
1104H8M	138	1104
1112H8M	139	1112
1120H8M	140	1120
1128H8M	141	1128
1136H8M	142	1136
1144H8M	143	1144
1152H8M	144	1152
1160H8M	145	1160
1168H8M	146	1168
1176H8M	147	1176
1184H8M	148	1184
1192H8M	149	1192
1200H8M	150	1200
1208H8M	151	1208
1216H8M	152	1216
1224H8M	153	1224
1232H8M	154	1232
1240H8M	155	1240
1248H8M	156	1248
1256H8M	157	1256
1264H8M	158	1264
1272H8M	159	1272
1280H8M	160	1280

Part Number		Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
Type	Belt Number	Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
C－HTBN	1288H8M	200 (20mm) 250 (25mm) 300 (30mm) 400 (40mm) 500 (50mm) 850 (85mm)	161	1288
	1296H8M		162	1296
	1304H8M		163	1304
	1312H8M		164	1312
	1320H8M		165	1320
	1328H8M		166	1328
	1336H8M		167	1336
	1344H8M		168	1344
	1352H8M		169	1352
	1360H8M		170	1360
	1368H8M		171	1368
	1376H8M		172	1376
	1384H8M		173	1384
	1392H8M		174	1392
	1400H8M		175	1400
	1408H8M		176	1408
	1416H8M		177	1416
	1424H8M		178	1424
	1432H8M		179	1432
	1440H8M		180	1440
	1448H8M		181	1448
	1456H8M		182	1456
	1464H8M		183	1464
	1472H8M		184	1472
	1480H8M		185	1480
	1488H8M		186	1488
	1496H8M		187	1496
	1504H8M		188	1504
	1512H8M		189	1512
	1520H8M		190	1520
	1528H8M		191	1528
	1536H8M		192	1536
	1544H8M		193	1544
	1552H8M		194	1552
	1560H8M		195	1560
	1568H8M		196	1568
	1576H8M		197	1576
	1584H8M		198	1584
	1592H8M		199	1592
	1600H8M		200	1600
	1608H8M		201	1608
	1616H8M		202	1616
	1624H8M		203	1624
	1632H8M		204	1632
	1640H8M		205	1640
	1648H8M		206	1648
	1656H8M		207	1656
	1664H8M		208	1664
	1672H8M		209	1672
	1680H8M		210	1680
	1688H8M		211	1688
	1696H8M		212	1696
	1704H8M		213	1704
	1712H8M		214	1712
	1720H8M		215	1720
	1728H8M		216	1728
	1736H8M		217	1736
	1744H8M		218	1744
	1752H8M		219	1752
	1760H8M		220	1760
	1768H8M		221	1768
	1776H8M		222	1776
	1784H8M		223	1784
	1792H8M		224	1792
1800H8M	225	1800
1808H8M	226	1808
1816H8M	227	1816
1824H8M	228	1824
1832H8M	229	1832
1840H8M	230	1840
1848H8M	231	1848
1856H8M	232	1856
1864H8M	233	1864
1872H8M	234	1872
1880H8M	235	1880
1888H8M	236	1888
1896H8M	237	1896
1904H8M	238	1904
1912H8M	239	1912
1920H8M	240	1920
1928H8M	241	1928
1936H8M	242	1936
1944H8M	243	1944
1952H8M	244	1952
1960H8M	245	1960
1968H8M	246	1968
1976H8M	247	1976
1984H8M	248	1984
1992H8M	249	1992
2000H8M	250	2000
2008H8M	251	2008
2016H8M	252	2016
2024H8M	253	2024
2032H8M	254	2032
2040H8M	255	2040
2048H8M	256	2048
2056H8M	257	2056
2064H8M	258	2064
2072H8M	259	2072
2080H8M	260	2080
2088H8M	261	2088
2096H8M	262	2096
2104H8M	263	2104
2112H8M	264	2112
2120H8M	265	2120
2128H8M	266	2128
2136H8M	267	2136
2144H8M	268	2144
2152H8M	269	2152
2160H8M	270	2160
2168H8M	271	2168
2176H8M	272	2176
2184H8M	273	2184
2192H8M	274	2192
2200H8M	275	2200
2208H8M	276	2208
2216H8M	277	2216
2224H8M	278	2224
2232H8M	279	2232
2240H8M	280	2240
2248H8M	281	2248
2256H8M	282	2256
2264H8M	283	2264
2272H8M	284	2272
2280H8M	285	2280
2288H8M	286	2288

Part Number		Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
Type	Belt Number	Belt Nominal Width	Number of Teeth	Belt Circumference Length (mm)
C－HTBN	2296H8M	200 (20mm) 250 (25mm) 300 (30mm) 400 (40mm) 500 (50mm) 850 (85mm)	287	2296
	2304H8M		288	2304
	2312H8M		289	2312
	2320H8M		290	2320
	2328H8M		291	2328
	2336H8M		292	2336
	2344H8M		293	2344
	2352H8M		294	2352
	2360H8M		295	2360
	2368H8M		296	2368
	2376H8M		297	2376
	2384H8M		298	2384
	2392H8M		299	2392
	2400H8M		300	2400
	2408H8M		301	2408
	2416H8M		302	2416
	2424H8M		303	2424
	2432H8M		304	2432
	2440H8M		305	2440
	2448H8M		306	2448
	2456H8M		307	2456
	2464H8M		308	2464
	2472H8M		309	2472
	2480H8M		310	2480
	2488H8M		311	2488
	2496H8M		312	2496
	2504H8M		313	2504
	2512H8M		314	2512
	2520H8M		315	2520
	2528H8M		316	2528
	2536H8M		317	2536
	2544H8M		318	2544
	2552H8M		319	2552
	2560H8M		320	2560
	2584H8M		323	2584
	2600H8M		325	2600
	2616H8M		327	2616
	2624H8M		328	2624
	2640H8M		330	2640
	2656H8M		332	2656
	2672H8M		334	2672
	2680H8M		335	2680
	2688H8M		336	2688
	2696H8M		337	2696
	2704H8M		338	2704
	2712H8M		339	2712
	2720H8M		340	2720
	2736H8M		342	2736
	2752H8M		344	2752
	2760H8M		345	2760
	2768H8M		346	2768
	2776H8M		347	2776
	2784H8M		348	2784
	2800H8M		350	2800
	2816H8M		352	2816
	2824H8M		353	2824
	2832H8M		354	2832
	2840H8M		355	2840
	2848H8M		356	2848
	2856H8M		357	2856
	2864H8M		358	2864
	2880H8M		360	2880
	2896H8M		362	2896
	2904H8M		363	2904
2912H8M	364	2912
2920H8M	365	2920
2928H8M	366	2928
2944H8M	368	2944
2960H8M	370	2960
2984H8M	373	2984
3000H8M	375	3000
3008H8M	376	3008
3048H8M	381	3048
3072H8M	384	3072
3080H8M	385	3080
3088H8M	386	3088
3096H8M	387	3096
3120H8M	390	3120
3168H8M	396	3168
3200H8M	400	3200
3240H8M	405	3240
3264H8M	408	3264
3280H8M	410	3280
3320H8M	415	3320
3360H8M	420	3360
3400H8M	425	3400
3408H8M	426	3408
3424H8M	428	3424
3440H8M	430	3440
3480H8M	435	3480
3504H8M	438	3504
3600H8M	450	3600
3640H8M	455	3640
3680H8M	460	3680
3704H8M	463	3704
3720H8M	465	3720
3744H8M	468	3744
3760H8M	470	3760
3776H8M	472	3776
3800H8M	475	3800
3808H8M	476	3808
3824H8M	478	3824
3840H8M	480	3840
3864H8M	483	3864
3904H8M	488	3904
3920H8M	490	3920
3944H8M	493	3944
4000H8M	500	4000
4080H8M	510	4080
4096H8M	512	4096
4104H8M	513	4104
4200H8M	525	4200
4224H8M	528	4224
4240H8M	530	4240
4256H8M	532	4256
4320H8M	540	4320
4400H8M	550	4400
4520H8M	565	4520
4656H8M	582	4656
4680H8M	585	4680
4736H8M	592	4736
4880H8M	610	4880
4960H8M	620	4960
5120H8M	640	5120
5600H8M	700	5600
8320H8M	1040	8320

For more specifications, please refer to the information on the official website.

Product Features

■ HTD type arc tooth profile rubber Timing Belt (H8M)
Feature 1: The arc tooth profile has higher transmission power in comparison with the trapezoidal tooth.
Feature 2: Economical and maintenance free.
Feature 3: The tooth rubber adopts chloroprene to protect core wire from dirt, grease, and wet environments.
Feature 4:·Have certain conductivity.
Feature 5:·Recommended Operating Temperature Range: -10 to 90℃.

Usage Method

■ Installation method for Timing Belt transmission
①	Turn off the power supply, remove the protective cover, loosen the motor assembly bolts, move the motor so that the belt is loose enough. The belt can be removed without prying. Never try to pry the belt down.
②	Remove the old belt and check for abnormal wear. Excessive wear may mean that there are problems in the design or maintenance of the transmission device.
③	Choose the right belt to replace.
④	To clean the belt and pulley, wipe with a cloth dipped in a small amount of non-volatile liquid. Soaking in detergent or scrubbing the belt with detergent is not advisable. To remove grease, it is also undesirable to wipe with sandpaper or scratch with a sharp object. The belt must be kept dry before installation and use.
⑤	Check the pulley for abnormal wear or cracks. If the wear is excessive, the pulley must be replaced.
⑥	Check whether the pulley is linearly symmetrical. Linear symmetry of the pulley is essential for the operation of the Timing Belt, especially the Timing Belt transmission device. Asymmetry of the pulley is shown as follows:

⑦	Check the remaining transmission device components, such as bearings and bushings, for symmetry, durability, lubrication and other conditions.
⑧	Install a new belt on the pulley. Never pry or use too much force.
⑨	Tighten to narrow the center distance of the transmission device until the tension tester detects that the belt tension is appropriate. Turn the driving wheel several times with your hands. Re-test tension.
⑩	Tighten the assembly bolts of the motor and correct the torque. Since any change in the center distance of the transmission device during operation will result in poor belt performance, it is important to ensure that all transmission components have been tightened.
⑪	Start the device and observe the belt performance to see if there is abnormal vibration, and listen carefully if there is abnormal noise. It is best to turn off the machine and check the conditions of the bearing and motor. If it feels too hot to the touch, the belt may be too tight, the bearing may be asymmetrical, or the lubrication may be incorrect.

Precautions

①Do not bend the Timing Belt by force.
It is strictly forbidden to bend the belt, which easily causes breakage

Do not use in direct contact with water, solvent, oil, acid, alkali, UV, ozone, etc.

③ Please avoid using or keeping at extreme high or low temperatures beyond the operating temperature range, or in humid environments.
④ During installation and maintenance, be sure to cut off the power supply and confirm that the machine is completely stopped before proceeding.
⑤ When there may be impurities, be sure to set the guard.

Example of Use

Timing Belt Usage Method Example Drawing	Instructions for use of timing wheel and Timing Belt
	① Driving (The driven wheel is driven by the driving wheel for transmission)
	② Transmission (Used for repeated motion with the object not rotating and high requirements on positioning accuracy)

Timing Belt Usage Method Example Drawing	Instructions for use of timing wheel and Timing Belt
	③ Conveyance (Plates are conveyed by two timing toothed belts)
	④ Traction transmission (Workpieces are clamped and transmitted by the belt)

Application Industries

Food	Semiconductor	Smartphone

Automotive	Electronic & Electrical Appliances	Medical

Related Products

Timing Belts S8M		Timing Pulleys HTD 3M		Timing Pulleys HTD 5M