1)中心距  以輸出級中心距為公稱中心距，見下表。

 減速器的中心距               (mm)

    2) 傳動比

    減速器的公稱傳動比與實際傳動比(見下表)的極限偏差二級為±4%，三級為±5%。

公稱中心距	代號
	QJR、QJR-D						QJS、QJRS、QJS-D、QJRS-D
	公稱傳動比
	10	12.5	16	20	25	31.5	40	50	63	80	100	125	160	200
140	10.20	12.67	16.42	20.79	25.59	31.78	40.30	49.26	63.09	78.00	99.57	122.58	162.09	201.24
170	9.70	12.34	16.01	19.93	25.56	31.31	39.87	49.21	64.04	81.82	101.86	122.40	161.85	198.27
200	9.95	12.67	16.42	20.25	24.48	32.38	40.75	49.95	63.22	77.28	98.48	125.89	161.28	199.66
236	9.80	12.34	16.01	19.93	25.56	31.67	41.13	50.21	64.92	81.11	99.64	127.78	156.53	193.96
280	10.20	12.67	16.42	20.25	24.48	32.36	39.15	50.76	61.36	82.10	102.36	123.76	153.41	202.76
335	10.19	12.96	15.80	20.74	25.00	30.63	40.00	48.76	62.35	83.19	99.35	127.78	158.33	193.96
400	9.95	12.67	16.42	20.25	24.48	32.38	40.75	49.95	63.22	77.28	98.04	126.48	156.67	207.22
450	9.84	12.89	16.21	20.16	25.26	32.43	40.48	50.96	62.15	77.83	101.91	127.69	158.28	203.21
500	10.02	12.50	16.01	20.14	25.52	31.25	40.22	48.70	61.64	81.05	101.72	121.50	156.10	205.06
560	10.20	12.67	16.42	20.25	24.48	32.36	39.15	50.76	61.36	82.11	102.36	123.76	153.41	202.76
630	10.03	12.88	16.21	20.16	25.26	32.40	39.67	49.94	62.54	81.07	102.81	121.48	156.00	200.12
710	10.01	12.50	16.01	20.14	25.52	30.91	40.77	49.37	62.44	82.05	101.77	128.92	157.88	206.07
800	9.95	12.67	16.42	20.25	24.48	32.38	40.75	49.95	63.22	77.28	98.04	126.48	156.67	207.22
900	9.84	12.88	16.21	20.16	25.26	32.43	39.11	49.24	64.12	81.97	99.83	125.08	160.46	206.00
1000	10.02	12.50	16.01	20.14	25.52	31.25	40.22	48.70	61.64	81.05	101.72	121.50	156.10	205.06