H Timing Pulleys

H pulleys are stock belt positive drive pulleys with trapezoidal teeth with a 1/2 pitch. H is part of family of 5 with XL, L, H, XH, XXH. Grob carries XL, L, and H sized pitches. H is typically used in high-torque applications. Paired with B belt tooth profile.

H Timing Pulleys Specifications

Part Name	No. Teeth	Pitch Dia.	O.D.	Root Diameter	Pin Dia.	Measurement over Pins
1/2-H-10	10	1.592	1.540	1.303	0.160	1.623
1/2-H-12	12	1.910	1.858	1.621	0.160	1.941
1/2-H-14	14	2.228	2.176	1.939	0.160	2.259
1/2-H-15	15	2.387	2.335	2.098	0.160	2.418
1/2-H-16	16	2.546	2.494	2.257	0.160	2.577
1/2-H-17	17	2.706	2.654	2.417	0.160	2.737
1/2-H-18	18	2.865	2.813	2.576	0.160	2.896
1/2-H-19	19	3.024	2.972	2.735	0.160	3.055
1/2-H-20	20	3.183	3.131	2.894	0.160	3.214
1/2-H-21	21	3.342	3.290	3.053	0.160	3.373
1/2-H-22	22	3.501	3.449	3.212	0.160	3.532
1/2-H-23	23	3.661	3.609	3.372	0.160	3.692
1/2-H-24	24	3.820	3.768	3.531	0.160	3.851
1/2-H-25	25	3.979	3.927	3.690	0.160	4.010
1/2-H-26	26	4.138	4.087	3.849	0.160	4.169
1/2-H-27	27	4.297	4.246	4.008	0.160	4.328
1/2-H-28	28	4.456	4.405	4.167	0.160	4.487
1/2-H-29	29	4.615	4.564	4.326	0.160	4.646
1/2-H-30	30	4.775	4.724	4.486	0.160	4.806
1/2-H-31	31	4.934	4.883	4.645	0.160	4.965
1/2-H-32	32	5.093	5.042	4.804	0.160	5.124
1/2-H-33	33	5.252	5.201	4.963	0.160	5.283
1/2-H-34	34	5.411	5.360	5.122	0.160	5.442
1/2-H-35	35	5.570	5.519	5.281	0.160	5.601
1/2-H-36	36	5.730	5.679	5.441	0.160	5.761
1/2-H-37	37	5.889	5.838	5.600	0.160	5.920
1/2-H-38	38	6.048	5.997	5.759	0.160	6.079
1/2-H-40	40	6.366	6.315	6.077	0.160	6.397
1/2-H-48	48	7.639	7.588	7.350	0.160	7.670
1/2-H-49	49	7.799	7.748	7.510	0.160	7.830
1/2-H-52	52	8.276	8.225	7.987	0.160	8.307
1/2-H-72	72	11.459	11.462	11.224	0.160	11.544