L

L pulleys are stock belt positive drive pulleys with trapezoidal teeth with a 3/8 pitch. L is the second smallest pitch in a family of 5 with XL, L, H, XH, XXH. Grob carries XL, L, and H sized pitches. L is typically used in medium-speed medium-torque applications. Paired with C belt tooth profile.

3/8-L Timing Belt Data

Part Name	No. Teeth	Pitch Dia.	O.D.	Root Diameter	Pin Dia.	Measurement Over Pins
3/8-L-10	10	1.194	1.166	0.960	0.165	1.290
3/8-L-11	11	1.313	1.285	1.079	0.165	1.409
3/8-L-12	12	1.432	1.404	1.198	0.165	1.528
3/8-L-13	13	1.552	1.524	1.318	0.165	1.648
3/8-L-14	14	1.671	1.643	1.437	0.165	1.767
3/8-L-15	15	1.790	1.762	1.556	0.165	1.886
3/8-L-16	16	1.910	1.882	1.676	0.165	2.006
3/8-L-17	17	2.029	2.001	1.795	0.165	2.125
3/8-L-18	18	2.149	2.121	1.915	0.165	2.245
3/8-L-19	19	2.268	2.240	2.034	0.165	2.364
3/8-L-20	20	2.387	2.359	2.153	0.165	2.483
3/8-L-21	21	2.507	2.479	2.273	0.165	2.603
3/8-L-22	22	2.626	2.598	2.392	0.165	2.722
3/8-L-23	23	2.745	2.717	2.511	0.165	2.841
3/8-L-24	24	2.865	2.837	2.631	0.165	2.961
3/8-L-25	25	2.984	2.956	2.750	0.165	3.080
3/8-L-26	26	3.104	3.076	2.870	0.165	3.200
3/8-L-27	27	3.223	3.195	2.989	0.165	3.319
3/8-L-28	28	3.342	3.314	3.108	0.165	3.438
3/8-L-29	29	3.462	3.434	3.228	0.165	3.558
3/8-L-30	30	3.581	3.553	3.347	0.165	3.677
3/8-L-31	31	3.700	3.672	3.466	0.165	3.796
3/8-L-32	32	3.820	3.792	3.586	0.165	3.916
3/8-L-33	33	3.939	3.911	3.705	0.165	4.035
3/8-L-34	34	4.058	4.031	3.824	0.165	4.154
3/8-L-35	35	4.178	4.151	3.944	0.165	4.274
3/8-L-36	36	4.297	4.270	4.063	0.165	4.393
3/8-L-37	37	4.417	4.390	4.183	0.165	4.513
3/8-L-38	38	4.536	4.509	4.302	0.165	4.632
3/8-L-39	39	4.655	4.628	4.421	0.165	4.751
3/8-L-40	40	4.775	4.748	4.541	0.165	4.871
3/8-L-41	41	4.894	4.867	4.660	0.165	4.990
3/8-L-42	42	5.013	4.986	4.779	0.165	5.109
3/8-L-43	43	5.133	5.106	4.899	0.165	5.229
3/8-L-44	44	5.252	5.225	5.018	0.165	5.348
3/8-L-45	45	5.371	5.344	5.137	0.165	5.467
3/8-L-46	46	5.491	5.464	5.257	0.165	5.587
3/8-L-47	47	5.610	5.583	5.376	0.165	5.706
3/8-L-48	48	5.730	5.703	5.496	0.165	5.826
3/8-L-49	49	5.849	5.822	5.615	0.165	5.945
3/8-L-50	50	5.968	5.941	5.734	0.165	6.064