Retaining Rings (External)		JIS B 2804
Under Size No.9 Above Size No.170	Groove Dimension The dimension d4 is the maximum diameter of outer periphery when the retaining ring is set on the shaft. d4:CLEARANCE DIAMETER	(JAPANESE INDUSTRIAL STANDARD) R-PACK STW-rings can be supplied in tape wrapped or banded. Size No.10 through 48 tape wrapped. Size No. 50 through 125 tape wrapped or banded. Unit:mm

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

● Material=Carbon spring steel. Hardness=HRC44~52, Finish=Black phosphate coating (ACP),Zn plating,Chromate dip. ● Material=Stainless spring steel Note; ※mark and size No.130 above are according to our company's specification.

○mark is old JIS.