Radial Needle and Cage Assemblies for Pin

Inch size miniature bearings

Pr = XFr + YFa
　

Fa
---

Cor

Fa
---

Cor

≤e

Fa
---

Cor

＞e

0.010
0.020
0.040
0.070
0.10
0.15
0.20
0.30

0.18
0.20
0.24
0.27
0.29
0.32
0.35
0.38

0.56

2.46
2.14
1.83
1.61
1.48
1.35
1.25
1.13

Por = 0.6Fr + 0.5Fa
When Por ＜Fr, Let Por = Fr

Bearing accuracy
Bearing accurany refers to accuracy on and rotation. According to chinese national standard, the bearing accuracy is divided into five classes: Class 0, Class 6, Class 5, Class 4 and Class 2. All of them are equivalent to ISO standard.The comparison of different accuracy classes are shown as follows:

Comparison table of accuracy grade
　

Standard	Accuracy Grade
GB ISO ANSI SKF DIN JIS	0 0 ABEC1 PO PO 0	6 6 ABEC3 P6 P6 6	5 5 ABEC5 P5 P5 5	4 4 ABEC7 P4 P4 4	2 2 ABEC9 P2 P2 2

Main size(mm)								Load rating(N)		Maxronout speed (rpm)		Bearing No.						Fixing size(mm)			Weight(kg)
d	D	B	B1	D1	C1	C2	rsmin1)	Cr	Cor	Grease	Oil	Open	Z	ZZ	FL	FL...Z	FL...ZZ	Ds	dh	R	Open	FL
1.016	3.175	1.191	-	-	-	-	0.08	97	26	110000	130000	R01	-	-	-	-	-	1.6	2.5	0.08	0.04	-
1.191	3.967	1.588	2.380	5.16	0.33	0.79	0.08	159	44	93000	110000	R0	R0Z	R0ZZ	FLR0	FLR0Z	FLR0ZZ	2	3.2	0.08	0.09	0.11
1.397	4.762	1.984	2.779	5.94	0.58	0.79	0.08	185	56	81000	95000	R1	R1Z	R1ZZ	FLR1	FLR1Z	FLR1ZZ	2.2	3.8	0.08	0.17	0.21
1.984	6.350	2.380	3.571	7.52	0.58	0.79	0.08	279	89	67000	79000	R1-4	R1-4Z	R1-4ZZ	FLR1-4	FLR1-4Z	FLR1-4ZZ	2.8	5.5	0.08	0.35	0.41
2.380	4.762	1.588	2.380	5.94	0.46	0.79	0.08	124	42	73000	85000	R133	R133Z	R133ZZ	FLR133	FLR133Z	FLR133ZZ	3.2	4	0.08	0.12	0.16
2.380	7.938	2.779	3.571	9.12	0.58	0.79	0.13	430	152	56000	66000	R1-5	R1-5Z	R1-5ZZ	FLR1-5	FLR1-5Z	FLR1-5ZZ	3.2	7	0.1	0.69	0.76
3.175	6.350	2.380	2.779	7.52	0.58	0.79	0.08	284	96	59000	70000	R144	R144Z	R144ZZ	FLR144	FLR144Z	FLR144ZZ	4	5.5	0.08	0.27	0.33
	7.938	2.779	3.571	9.12	0.58	0.79	0.08	560	180	54000	63000	R2-5	R2-5Z	R2-5ZZ	FLR2-5	FLR2-5Z	FLR2-5ZZ	4	7	0.08	0.61	0.68
	9.525	2.779	3.571	10.72	0.58	0.79	0.13	640	224	49000	58000	R2-6	R2-6Z	R2-6ZZ	FLR2-6	FLR2-6Z	FLR2-6ZZ	4	8.7	0.1	0.88	0.96
	9.525	3.967	3.967	11.18	0.76	0.76	0.3	640	224	49000	58000	R2	R2Z	R2ZZ	FLR2	FLR2Z	FLR2ZZ	4.8	7.8	0.3	1.3	1.5
	12.700	4.366	4.366	-	-	-	0.3	1150	395	43000	51000	R2	R2Z	R2ZZ	-	-	-	4.8	11	0.3	2.5	-
3.967	7.938	2.779	3.175	9.12	0.58	0.91	0.08	335	133	51000	60000	R155	R155Z	R155ZZ	FLR155	FLR155Z	FLR155ZZ	4.8	7	0.08	0.54	0.61
4.762	7.938	2.779	3.175	9.12	0.58	0.91	0.08	395	143	49000	58000	R156	R156Z	R156ZZ	FLR156	FLR156Z	FLR156ZZ	5.6	7	0.08	0.44	0.51
	9.525	3.175	3.175	10.72	0.58	0.79	0.08	710	268	46000	55000	R166	R166Z	R166ZZ	FLR166	FLR166Z	FLR166ZZ	5.6	8.7	0.08	0.80	0.89
	12.700	3.967	-	-	-	-	0.3	1310	490	41000	48000	R3	-	-	-	-	-	6.4	11	0.3	2.2	-
	12.700	4.978	4.978	14.35	1.07	1.07	0.3	1310	490	41000	48000	R3	R3Z	R3ZZ	FLR3	FLR3Z	FLR3ZZ	6.4	11	0.3	2.4	2.7
6.350	9.525	3.175	3.175	10.72	0.58	0.91	0.08	268	136	43000	51000	R168	R168Z	R168ZZ	FLR168	FLR168Z	FLR168ZZ	7.2	8.7	0.08	0.60	0.69
	12.700	3.175	4.762	13.89	0.58	1.14	0.13	830	370	39000	46000	R188	R188Z	R188ZZ	FLR188	FLR188Z	FLR188ZZ	7.2	11.8	0.1	1.6	1.7
	15.875	4.978	4.978	17.53	1.07	1.07	0.3	1480	615	36000	43000	R4	R4Z	R4ZZ	FLR4	FLR4Z	FLR4ZZ	8	14.2	0.3	4.4	4.8
	19.050	-	7.142	-	-	-	0.41	2340	885	34000	40000	-	RA4Z	RA4ZZ	-	-	-	8.4	17	0.4	112)	-
9.525	22.225	-	7.142	24.61	-	1.57	0.41	3300	1400	31000	37000	-	R6Z	R6ZZ	-	-	-	-	20.2	0.4	142)	152)

　　　 1N=0.102kgf
　　　