滚针 - 角接触球轴承

NEEDLE -HRUST BALL BEARINGS

              NX                   　　　　　　　　  NX...Z

NX,NX...Z

Shaft Diameter	Bearing Designation		Boundary Dimensions
Shaft Diameter	Oil	Grease	FW	D	C -0.25	C1	dw	rs
mm	Oil	Grease	FW	D	C -0.25	C1	dw	rs
7	NX 7 TN*)	NX 7 Z TN*)	7	14	18	4.7	7	0.3
10	NX 10	NX 10 Z	10	19	18	4.7	10	0.3
12	NX 12	NX 12 Z	12	21	18	4.7	12	0.3
15	NX 15	NX 15 Z	15	24	28	8	15	0.3
17	NX 17	NX 17 Z	17	26	28	8	17	0.3
20	NX 20	NX 20 Z	20	30	28	8	20	0.3
25	NX 25	NX 25 Z	25	37	30	8	25	0.3
30	NX 30	NX 30 Z	30	42	30	10	30	0.3
35	NX 35	NX 35 Z	35	47	30	10	35	0.3

Basic Load Ratings				Limiting Speed2) ⁿ¹oil ≈ min-1	Mounting Size				The inner ring to fit3) d F B	Stop ring4)
Radial		Axia1)			C -0.5	D₁	d_a	r_a max.
C N	C0 N	C N	C0 N		C -0.5	D₁	d_a	r_a max.
2850	2650	3450	4000	15000	10	16.5	9.6	0.3	--	WR 14
4450	3700	5100	6700	11000	10	21.9	14.6	0.3	IR 6X 10X10	WR 19
4800	4300	5300	7700	9500	10	23.7	16.6	0.3	IR 8X12X10	WR 21
10700	12700	6100	9700	8000	12.2	26.5	19	0.3	IR 12X15X16	WR 24
11900	15000	6400	10700	7500	12.2	28.5	21	0.3	IR 14X17X17	WR 26
13000	17500	7700	13700	6500	12.2	33.6	25	0.3	IR 17X20X16	WR 30
14900	22400	12200	22600	4900	14.2	40.4	31.6	0.3	IR 20X25X16	WR 37
22600	36000	12800	26000	4300	14.2	45.1	36.5	0.3	IR 25X30X20	WR 42
24300	41500	13600	30000	3700	14.2	50.1	40.5	0.3	IR 30X35X20	WR 47

TN=plastic retainer, permissible operational temperature 120℃, 150℃ for temporary use ,180℃ for short time only. 1) minister axile load is 1% to 2% of Fa=C(axial). 2) for grease lub, the permissible value should be 60% of those in the list. 3) inner ring and stop ring must to be part to order. 4) if two bearings will move to minister center distance,there stop rings must to be shorten.