滚针-推力球轴承

NEEDLE ?THRUST CYLINDRICAL ROLLER BEARINGS

NKXR NKXR...Z

With/withoutfixedcages

NKXR,NKXR...Z

Shaft Diameter	Bearing Designation		Boundary Dimensions
Shaft Diameter		The bearing with fixed cages	FW	D	D₁	D₂	C	C₁ -0.25	C₂ -0.2	d_w E8	r_s min.
mm		The bearing with fixed cages	FW	D	D₁	D₂	C	C₁ -0.25	C₂ -0.2	d_w E8	r_s min.
15	NKXR 15	NKXR 15 Z	15	24	28	29.2	23	9	6.5	15	0.3
17	NKXR 17	NKXR 17 Z	17	26	30	31.2	25	9	8	17	0.3
20	NKXR 20	NKXR 20 Z	20	30	35	36.2	30	10	10.5	20	0.3
25	NKXR 25	NKXR 25 Z	25	37	42	43.2	30	11	9.5	25	0.6
30	NKXR 30	NKXR 30 Z	30	42	47	48.2	30	11	9.5	30	0.6
35	NKXR 35	NKXR 35 Z	35	47	52	53.2	30	12	9	35	0.6
40	NKXR 40	NKXR 40 Z	40	52	60	61.2	32	13	10	40	0.6
45	NKXR 45	NKXR 45 Z	45	58	65	66.5	32	14	9	45	0.6
50	NKXR 50	NKXR 50 Z	50	62	70	71.5	35	14	10	50	0.6

Basic Load Ratings				Limiting Speed2) ⁿ¹oil ≈ min-1	Mounting Size		The inner ring to fit3) d F B
Radial		Axial1)			d_a	r_a max.
C N	C0 N	C N	C0 N		d_a	r_a max.
10700	12700	14400	28500	11000	23.7	0.3	IR 12X15X16
11900	15000	15900	33500	10000	25.7	0.3	IR 14X17X17
16400	23800	24900	53000	8500	30.7	0.3	IR 17X20X20
18800	30500	33500	76000	7000	37.7	0.3	IR 20X25X20
22600	36000	35500	86000	6000	42.7	0.3	IR 25X30X20
24300	41500	39000	101000	5500	47.7	0.6	IR 30X35X20
26000	47000	56000	148000	4800	55.7	0.6	IR 35X40X20
27500	53000	59000	163000	4400	60.6	0.6	IR 40X45X20
38000	74000	61000	177000	4000	65.5	0.6	IR 45X50X25

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.