HTD8M节距：8MM
规格	齿数	节径 D	外径Do	档边直径 Df	档边内径 db	档边厚度 h
22-8M	22	56.02	54.65	61	45	1.2
23-8M	23	58.57	57.2	64	48	1.2
24-8M	24	61.12	59.75	68	52	1.2
25-8M	25	63.66	62.29	73	55	1.2
26-8M	26	66.21	64.84	73	55	1.2
27-8M	27	68.75	67.38	73	55	1.2
28-8M	28	71.3	69.93	80	60	1.2
30-8M	30	76.39	75.02	82	64	1.2
32-8M	32	81.49	80.12	90	70	1.2
34-8M	34	86.58	85.21	98	78	1.2
36-8M	36	91.67	90.3	98	78	1.2
38-8M	38	96.77	95.4	102	83	1.2
40-8M	40	101.86	100.49	109	90	1.2
42-8M	42	106.95	105.58	115	95	1.2
44-8M	44	112.05	110.68	123	103	1.2
46-8M	46	117.14	115.77	123	103	1.2
48-8M	48	122.23	120.86	131	111	1.5
50-8M	50	127.32	125.95	139	110	1.5
64-8M	64	162.97	161.6	/	/	/
72-8M	72	183.35	181.98	/	/	/
80-8M	80	203.72	202.35	/	/	/
90-8M	90	229.18	227.81	/	/	/
112-8M	112	285.21	283.84	/	/	/