Ochiai Retaining Rings Thrust Direction Mounting Types Basic Internal Ring STW

Manufacturer: Ochiai Co., Ltd.
Model : STW

Features

This is a basic retaining ring that is mounted from the thrust direction (parallel to the hole or shaft) onto the mating hole (shaft) with a grooved surface.

Specifications and Dimention

STW-3 through 56 (Unit: mm)

Size No.	Retaining Rings							d₄ (Ref.)	Groove dimention
	d₃		t		b	a	d₀		d₁	d₂		m		Ref. n
	Basic	Tol.	Basic	Tol.	Approx.	Approx.	Min.		d₁	Basic	Tol.	Basic	Tol.	Min.
STW-3	2.7	+0.04/-0.15	0.25	±0.025	0.5	1.7	0.7	7	3	2.85	0/-0.04	0.35	+0.1/0	0.3
STW-4	3.7		0.4	±0.03	0.9	2.2	0.8	9	4	3.8		0.5		0.3
STW-5	4.7		0.6	±0.04	1.1	2.4	0.8	10.5	5	4.8		0.7		0.3
STW-6	5.6	+0.06/-0.2	0.7		1.3	2.8	1	12	6	5.7		0.8		0.5
STW-7	6.5		0.8		1.4	3	1	14	7	6.7	0/-0.06	0.9		0.5
STW-8	7.4		0.8		1.6	3	1	15	8	7.6		0.9		0.6
STW-9	8.4		1	±0.05	1.8	3.2	1	16	9	8.6		1.15	+0.14/0	0.6
STW-10	9.3	±0.15	1		1.8	3	1.2	17	10	9.6	0/-0.09	1.15		1.5
STW-11	10.2	±0.15	1		2	3.1	1.2	18	11	10.5	1.15	1.15		1.5
STW-12	11.1	±0.18	1		2.1	3.2	1.5	19	12	11.5		1.15		1.5
STW-13	12		1		2.1	3.3	1.5	20	13	12.4		1.15		1.5
STW-14	12.9		1		2.2	3.4	1.7	22	14	13.4		1.15		1.5
STW-15	13.8		1		2.2	3.5	1.7	23	15	14.3		1.15		1.5
STW-16	14.7		1		2.2	3.6	1.7	24	16	15.2		1.15		1.5
STW-17	15.7		1		2.2	3.7	1.7	25	17	16.2		1.15		1.5
STW-18	16.5		1.2	±0.06	2.6	3.8	1.7	26	18	17		1.35		1.5
STW-19	17.5		1.2		2.7	3.8	2	27	19	18		1.35		1.5
STW-20	18.5	±0.2	1.2		2.7	3.9	2	28	20	19	0/-0.21	1.35		1.5
STW-21	19.5		1.2		2.7	4	2	30	21	20		1.35		1.5
STW-22	20.5		1.2		2.7	4.1	2	31	22	21		1.35		1.5
STW-23	21.4		1.2		2.9	4.5	2	32.5	23	22		1.35		1.5
STW-24	22.2		1.2		3.1	4.2	2	33	24	22.9		1.35		1.7
STW-25	23.2		1.2		3.1	4.3	2	34	25	23.9		1.35		1.7
STW-26	24.2		1.2		3.1	4.4	2	35	26	24.9		1.35		1.7
STW-27	25		1.2		3.3	4.5	2	36	27	25.8		1.35		1.8
STW-28	25.9		1.5		3.1	4.6	2	38	28	26.6		1.65		2.1
STW-29	26.9		1.5		3.5	4.7	2	39	29	27.6		1.65		2.1
SWT-30	27.9		1.5		3.5	4.8	2	40	30	28.6		1.65		2.1
SWT-32	29.6		1.5		3.5	5	2.5	43	32	30.3	0/-0.25	1.65		2.6
SWT-34	31.5	±0.25	1.5		4	5.3	2.5	45	34	32.3		1.65		2.6
SWT-35	32.2		1.5		4	5.4	2.5	46	35	33		1.65		3
SWT-36	33.2		1.75	±0.07	4	5.4	2.5	47	36	34		1.9		3
SWT-38	35.2		1.75		4.5	5.6	2.5	50	38	36		1.9		3
SWT-40	37	±0.4	1.75		4.5	5.8	2.5	53	40	38		1.9		3
SWT-42	38.5		1.75		4.5	6.2	2.5	55	42	39.5		1.9		3.8
SWT-45	41.5		1.75		4.8	6.3	2.5	58	45	42.5		1.9		3.8
SWT-47	43.4		1.75		5	6.6	2.5	61	47	44.5		1.9		3.8
SWT-48	44.5		1.75		4.8	6.5	2.5	62	48	45.5		1.9		3.8
SWT-50	45.8		2		5	6.7	2.5	64	50	47		2.2		4.5
SWT-52	47.8		2		5	6.8	2.5	66	52	49		2.2		4.5
SWT-55	50.8	±0.45	2		5	7	2.5	70	55	52	0/-0.3	2.2		4.5
SWT-56	51.8	±0.45	2		5	7	2.5	71	56	53	0/-0.3	2.2		4.5

STW-58 through 300 (Unit: mm)

Size No.	Retaining Rings							d₄ (Ref.)	Groove dimention
	d₃		t		b	a	d₀		d₁	d₂		m		Ref. n
	Basic	Tol.	Basic	Tol.	Approx.	Approx.	Min.		d₁	Basic	Tol.	Basic	Tol.	Min.
SWT-58	53.8	±0.45	2	±0.07	5.5	7.1	2.5	73	58	55	0/-0.3	2.2	+0.14/0	4.5
SWT-60	55.8		2		5.5	7.2	2.5	75	60	57		2.2		4.5
SWT-62	57.8		2		5.5	7.2	2.5	77	62	59		2.2		4.5
SWT-63	58.8		2		5.5	7.3	2.5	78	63	60		2.2		4.5
SWT-65	60.8		2.5	±0.08	6.4	7.4	2.5	81	65	62		2.7		4.5
SWT-68	63.5		2.5		6.4	7.8	2.5	84	68	65		2.7		4.5
SWT-70	65.5		2.5		6.4	7.8	2.5	86	70	67		2.7		4.5
SWT-72	67.5		2.5		7	7.9	2.5	88	72	69		2.7		4.5
SWT-75	70.5		2.5		7	7.9	2.5	92	75	72		2.7		4.5
SWT-78	73.5		2.5		7.4	8.1	2.5	95	78	75		2.7		4.5
STW-80	74.5		2.5		7.4	8.2	2.5	97	80	76.5		2.7		5.3
STW-82	76.5		2.5		7.4	8.3	3	99	82	78.5		2.7		5.3
STW-85	79.5		3	±0.09	8	8.4	3	103	85	81.5	0/-0.35	3.2	+0.18/0	5.3
STW-88	82.5	±0.55	3		8	8.6	3	106	88	84.5		3.2		5.3
STW-90	84.5		3		8	8.7	3	108	90	86.5		3.2		5.3
STW-95	89.5		3		8.6	9.1	3	114	95	91.5		3.2		5.3
STW-100	94.5		3		9	9.5	3	119	100	96.5		3.2		5.3
STW-105	98		4		9.5	9.8	3	125	105	101	0/-0.54	4.2		6
STW-110	103		4		9.5	10	3	131	110	106		4.2		6
STW-115	108		4		9.5	10.5	3	137	115	111		4.2		6
SWT-120	113		4		10.3	10.9	3	143	120	116		4.2		6
SWT-125	118		4		10.3	11.3	3.5	148	125	121	0/-0.63	4.2		6
SWT-130	123	+0.63/-1.26	4		11	11.5	3.5	154	130	126		4.2	+0.2/0	6
SWT-135	128		4		11	11.5	3.5	159	135	131		4.2		6
SWT-140	133		4		11	11.8	3.5	164	140	136		4.2		6
SWT-145	138		4		11.6	11.8	3.5	170	145	141		4.2		6
SWT-150	142		4		11.6	12.3	3.5	175	150	145		4.2		7.5
SWT-155	146		4		12.2	12.7	3.5	181	155	150		4.2		7.5
SWT-160	151		4		12.2	12.9	3.5	186	160	155		4.2		7.5
SWT-165	155.5		4		12.9	13.1	3.5	192	165	160		4.2		7.5
SWT-170	160.5		4		12.9	—	4	197	170	165		4.2		7.5
SWT-175	165.5		4		12.9	—	4	202	175	170		4.2		7.5
SWT-180	170.5		4		13.5	—	4	208	180	175		4.2		7.5
SWT-185	175.5	+0.72/-1.44	4		13.5	—	4	213	185	180		4.2		7.5
SWT-190	180.5		4		14	—	4	219	190	185	0/-0.72	4.2		7.5
SWT-195	185.5		4		14	—	4	224	195	190		4.2		7.5
SWT-200	190.5		4		14	—	4	229	200	195		4.2		7.5
SWT-210	198		5	±0.15	14	—	4	239	210	204		5.2	+0.25/0	9
SWT-220	208		5		14	—	4	249	220	214		5.2		9
SWT-230	218		5		14	—	4	259	230	224		5.2		9
SWT-240	228		5		14	—	4	269	240	234		5.2		9
SWT-250	238		5		14	—	4	279	250	244		5.2		9
SWT-260	245		5		16	—	4	293	260	252	0/-0.81	5.2		12
SWT-270	255	+0.81/-1.62	5		16	—	4	303	270	262		5.2		12
SWT-280	265		5		16	—	4	313	280	272		5.2		12
SWT-290	275		5		16	—	4	323	290	282		5.2		12
SWT-300	285		5		16	—	4	333	300	292		5.2		12