Ochiai Retaining Rings Thrust Direction Mounting Types Inverted Internal Ring IRTW

Manufacturer: Ochiai Co., Ltd.
Model: IRTW

Features

Compared to C-type retaining rings, the inner diameter (outer diameter) of the retaining ring after installation inthe groove is smaller, allowing it to be used in more space-efficient locations.
Compared to C-type retaining rings, the contact area with the groove is smaller, resulting in a thrust load of approximately 2/3.

Specifications and Dimention

IRTW-10 through 100 (Unit: mm)

Size No.	Retaining Rings								d₅	Groove dimention
	d₃		d₄ (Ref.)	t		b	d₀	Tol.		d₁	d₂		m		n
	Basic	Tol.	d₄ (Ref.)	Basic	Tol.	b	d₀	Tol.		d₁	Basic	Tol.	Basic	Tol.	Min.
IRTW-10	11.1	±0.18	7.7	1	±0.05	1.7	0.9	±0.3	5.9	10	10.4	+0.11/0	1.15	+0.14/0	1.5
IRTW-11	12.2		8.6	1		1.8	0.9		6.6	11	11.4		1.15		1.5
IRTW-12	13.3		9.7	1		1.8	0.9		7.6	12	12.5		1.15		1.5
IRTW-13	14.1		10.9	1		1.6	0.9		9	13	13.6		1.15		1.5
IRTW-14	15.1		11.7	1		1.7	0.9		9.8	14	14.6		1.15		1.5
IRTW-15	16.2		12.6	1		1.8	0.9		10.6	15	15.7		1.15		1.5
IRTW-16	17.3		13.5	1		1.9	0.9		11.4	16	16.8		1.15		1.5
IRTW-17	18.3	±0.2	14.3	1		2	0.9		12.2	17	17.8		1.15		1.5
IRTW-18	19.5		15.3	1		2.1	1		13	18	19	+0.21/0	1.15		1.5
IRTW-19	20.5		16.1	1		2.2	1		13.8	19	20		1.15		1.5
IRTW-20	21.5		16.9	1		2.3	1		14.5	20	21		1.15		1.5
IRTW-21	22.5		17.7	1		2.4	1.2	±0.4	15	21	22		1.15		1.5
IRTW-22	23.5		18.7	1		2.4	1.2		16	22	23		1.15		1.5
IRTW-24	25.9		20.7	1.2	±0.06	2.6	1.2		17.5	24	25.2		1.35		1.8
IRTW-25	26.9		21.5	1.2		2.7	1.2		18.5	25	26.2		1.35		1.8
IRTW-26	27.9		22.3	1.2		2.8	1.2		19	26	27.2		1.35		1.8
IRTW-28	30.1	±0.25	24.1	1.2		3	1.2		20.5	28	29.4		1.35		2.1
IRTW-30	32.1		25.7	1.2		3.2	1.4		22.5	30	31.4	±0.25/0	1.35		2.1
IRTW-32	34.4		27.4	1.2		3.5	1.6		23.5	32	33.7		1.35		2.55
IRTW-34	36.5		29.1	1.5		3.7	1.6		25	34	35.7		1.65		2.55
IRTW-35	37.8		30	1.5		3.9	1.6		26	35	37		1.65		3
IRTW-36	38.8		30.8	1.5		4	1.6		26.5	36	38		1.65		3
IRTW-37	39.8		31.6	1.5		4.1	1.6		27.5	37	39		1.65		3
IRTW-38	40.8		32.4	1.5		4.2	1.6		28	38	40		1.65		3
IRTW-40	43.5	±0.4	34.7	1.75	±0.07	4.4	2		30	40	42.5		1.9		3.75
IRTW-42	45.5		36.3	1.75		4.6	2	±0.5	31	42	44.5		1.9		3.75
IRTW-45	48.5		38.9	1.75		4.8	2		33	45	47.5		1.9		3.75
IRTW-47	50.5	±0.45	40.7	1.75		4.9	2		35	47	49.5		1.9		3.75
IRTW-48	51.5		41.5	1.75		5	2		36	48	50.5	+0.3/0	1.9		3.75
IRTW-50	54.2		44	2		5.1	2.2		38	50	53		2.2		4.5
IRTW-52	56.2		45.8	2		5.2	2.2		40	52	55		2.2		4.5
IRTW-55	59.2		48	2		5.6	2.2		42	55	58		2.2		4.5
IRTW-56	60.2		48.8	2		5.7	2.5		43	56	59		2.2		4.5
IRTW-58	62.2		50.4	2		5.9	2.5		44	58	61		2.2		4.5
IRTW-60	64.2		52	2		6.1	2.5		46	60	63		2.2		4.5
IRTW-62	66.2		53.6	2		6.3	2.8		47	62	65		2.2		4.5
IRTW-65	69.2		55.8	2.5	±0.08	6.7	3.2		49	65	68		2.7		4.5
IRTW-68	72.5		58.5	2.5		7	3.2		52	68	71		2.7		4.5
IRTW-72	76.5		61.7	2.5		7.4	3.2	±0.7	55	72	75		2.7		4.5
IRTW-75	79.5		63.9	2.5		7.8	3.2		57	75	78		2.7		4.5
IRTW-78	82.5	±0.55	66.3	2.5		8.1	3.2		59	78	81	±0.35/0	2.7		4.5
IRTW-80	85.5		68.9	2.5		8.3	3.2		61	80	83.5		2.7		5.25
IRTW-85	90.5		72.7	3	±0.09	8.9	4		64	85	88.5		3.2	±0.18/0	5.25
IRTW-90	95.5		76.7	3		9.4	4		68	90	93.5		3.2		5.25
IRTW-100	105.5		84.5	3		10.5	4		76	100	103.5		3.2		5.25