Product Details

Product Description

one way freewheel cage one way bearing DC7221B
Details
Model		DC7221B
Material		GCr15
Type		sprag
Inner Diameter		72.217mm
Outer Diameter		88.877mm
Weight		0.185kg
Width		21mm
Overrunning speed	Inner race	2600r/min
	Outer race	1300r/min
Application		Industrial machines

1.Type DC is a sprag type freewheel cage without inner or outer races. It must be installed in a design providing races, bearing support for axial and radial loads, lubrication and sealing.

2.The DC type version-N accepts all types of lubricants currently used in the power transmission equipement.
3.The sprag space tolerance must not be exceeded. Inner and outer races must both have a minimum plain width "e", without any recess, to ensure the freewheel functions correctly .

4.Alternatively, races can be made in case hardened steel shafts, or housings,
Surface hardness of the finished part should be HRC 60 to 62, for a depth of 0,6 mm minimum.
5.Core hardness to be HRC35 to 45. Surface roughness not to exceed 22CLA. Maximum taper between races:0,007 mm for 25 mm width.

specifications

Size		Overrunning speeds				Sprag space				Number of clips	Number of sprags	Weight
	TKN1)	nimax2)	namax3)	Øa+0.008	Øc± 0.013		emin	Ødmin	Øbmax
	TKN1)	nimax2)	namax3)	-0.005	Øc± 0.013		emin	Ødmin	Øbmax
	[Nm]	[min -1]	[min -1]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]			[kg]
DC2222G-N	63	8600	4300	22.225	38.885	8.33±0.075	10	50	15	–	12	0.03
DC2776-N	119	6900	3400	27.762	44.422	8.33±0.075	13.5	58	18	–	14	0.055
DC3034-N	124	6300	3100	30.34	47	8.33±0.075	13.5	62	20	–	14	0.06
DC3175(3C)-N	159	6000	3000	31.75	48.41	8.33±0.075	13.5	63	21	3	16	0.06
DC3809A-N	275	5000	2500	38.092	54.752	8.33±0.075	16	71	25	–	18	0.085
DC4127(3C)-N	224	4600	2300	41.275	57.935	8.33±0.075	13.5	75	27	3	18	0.09
DC4445A-N	363	4300	2100	44.45	61.11	8.33±0.1	16	79	29	–	20	0.095
DC4972(4C)-N	306	3800	1900	49.721	66.381	8.33±0.1	13.5	86	33	4	22	0.1
DC5476A-N	525	3500	1700	54.765	71.425	8.33±0.1	16	92	36	–	24	0.11
DC5476A(4C)-N	525	3500	1700	54.765	71.425	8.33±0.1	16	92	36	4	24	0.13
DC5476B(4C)-N	769	3500	1700	54.765	71.425	8.33±0.1	21	92	36	4	24	0.18
DC5476C(4C)-N	990	3500	1700	54.765	71.425	8.33±0.1	25.4	92	36	4	24	0.2
DC5776A-N	604	3300	1600	57.76	74.42	8.33±0.1	16	98	38	–	26	0.11
DC6334B-N	806	3000	1500	63.34	80	8.33±0.1	21	104	42	–	26	0.175
DC7221(5C)-N	675	2600	1300	72.217	88.877	8.33±0.1	13.5	115	48	5	30	0.14
DC7221B-N	1279	2600	1300	72.217	88.877	8.33±0.1	21	115	48	–	30	0.185
DC7221B(5C)-N	1279	2600	1300	72.217	88.877	8.33±0.1	21	115	48	5	30	0.21
DC7969C(5C)-N	2038	2400	1200	79.698	96.358	8.33±0.1	25.4	124	53	5	34	0.28
DC8334C-N	2055	2300	1100	83.34	100.000	8.33±0.1	25.4	132	55	–	34	0.27
DC8729A-N	1250	2200	1100	87.29	103.96	8.33±0.1	16	134	58	–	34	0.165
DC10323A(5C)*-N	1612	1800	900	103.231**	119.891	8.33±0.1	16	155	68	5	40	0.205
DC12334C*-N	4800	1500	750	123.340**	140.000	8.33±0.1	25.4	184	80	–	50	0.4
DC12388C(11C)	4875	1500	750	123.881	142.88	9.50±0.1	25.4	186	80	11	44	0.4