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Products - > Needle Roller Bearing -> Machined Needle Roller Bearings

Machined Typed needle roller bearing is a kind of high capacity bearing with small sectional height. It can operate very flexibly even with the light alloy bearing seat due to its high hard outer ring. There are two series: metric and inch series. Both of which are structured with retainer, full needle and sealing types. Besides, the entity bushed needle roller bearings are divided into two kinds: that with inner ring and without ring. The center shaft is used as rolling body tray for those without inner ring so that its size is even smaller

Structure

NK	Light series needle roller bearings without inner ring
NKS	Heavy series needle roller bearings without inner ring
RNA49	Needle roller bearings without inner ring
RNA69	Double row needle roller bearings without inner ring
RNA48	Needle roller bearings without inner ring
NKI	Light series needle roller bearings with inner ring
NKIS	Heavy series needle roller bearings with inner ring
NA49	Needle roller bearings with inner ring
NA69	Double row needle roller bearings with inner ring
NA48	Needle roller bearings with inner ring
RNA49... RS	Single sealed needle roller bearings without inner ring
RNA49... 2RS	Double sealed needle roller bearings without inner ring
NA49... RS	Single sealed needle roller bearings with inner ring
NA49... 2RS	Double sealed needle roller bearings with inner ring
I R	Inner ring series
BR, BRI	Inch system series needle roller bearings with inner ring

Drawing NK, NKS, RNA49, RNA69

Shaft Dia	Bearing Designation	Boundary Dimensions			Basic Load Ratings		Limiting
r							Speed
mm	Current	F_W	D	C	动	静	Oil
		F_W	D	C	C	Co	Oil
		mm			N		rpm
7	NK 7/12	7	14	12	3650	3600	34000
8	NK 8/12	8	15	12	3950	4100	32000
10	NA 4900	10	14	22	8500	9200	25000
10	NK 10/12	10	17	12	4750	5500	29000
10	NK 10/16	10	17	16	6200	7800	29000
12	NA 4901	12	16	24	9400	10900	23000
12	NA 6901	12	16	24	16000	21600	23000
12	NK 12/12	12	19	12	6400	7100	27000
12	NK 12/16	12	19	16	9000	11000	27000
14	NK 14/16	14	22	16	10100	11500	25000
14	NK 14/20	14	22	20	12800	15600	25000
15	NA 4902	15	20	28	10600	13600	21000
15	NA 6902	15	20	28	17300	25500	21000
15	NK 15/16	15	23	16	10700	12700	24000
15	NK 15/20	15	23	20	13600	17200	24000
16	NK 16/16	16	24	16	11300	13900	23000
16	NK 16/20	16	24	20	14400	18800	23000
17	NA 4903	17	22	30	11000	14600	20000
17	NA 6903	17	22	30	18600	29000	20000
17	NK 17/16	17	25	16	11900	15000	23000
17	NK 17/20	17	25	20	15100	20400	23000
17	NKI 17/16	17	21	29	13500	18700	21000
17	NKI 17/20	17	21	29	17100	25500	21000
18	NK 18/16	18	26	16	12500	16200	22000
18	NK 18/20	18	26	20	15800	22000	22000
19	NK 19/16	19	27	16	13000	17400	22000
19	NK 19/20	19	27	20	16500	23600	22000
20	NA 4904	20	25	37	21000	25500	17000
20	NA 6904	20	25	37	36000	51000	17000
20	NK20/16	20	28	16	13000	17500	21000
20	NK20/20	20	28	20	16400	23800	21000
20	NKI 20/16	20	24	32	15000	22300	18000
20	NKI 20/20	20	24	32	19000	30500	18000
20	NKIS 20	20	28	42	28500	36500	15000
21	NK21/16	21	29	16	13500	18700	21000
21	NK21/20	21	29	20	17100	25500	21000
22	NK22/16	22	30	16	14000	19900	20000
22	NK22/20	22	30	20	17700	27000	20000
22	NKI 22/16	22	26	34	15300	23600	17000
22	NKI 22/20	22	26	34	19400	32000	17000
22	RNA6903	22	30	23	18600	29000	20000
24	NK24/16	24	32	16	15000	22300	18000
24	NK24/20	24	32	20	19000	30500	18000
25	NA 4905	25	30	42	23600	31500	14000
25	NA 6905	25	30	42	29000	59000	14000
25	NK25/16	25	33	16	14900	22400	18000
25	NK25/20	25	33	20	18800	30500	18000
25	NKI 25/20	25	29	38	21900	34000	15000
25	NKI 25/30	25	29	38	32500	57000	15000
25	NKIS 25	25	32	47	33500	43500	13000
25	RNA4904	25	37	17	21000	25500	17000
26	NK26/16	26	34	16	15300	23600	17000
26	NK26/20	26	34	20	19400	32000	17000
28	NK28/20	28	37	20	22000	34000	16000
28	NK28/30	28	37	30	33000	57000	16000
29	NK29/20	29	38	20	21900	34000	15000
29	NK29/30	29	38	30	32500	57000	15000
30	NA 4906	30	35	47	25000	35500	13000
30	NA 6906	30	35	47	43500	71000	13000
30	NK30/20	30	40	20	22600	36000	15000
30	NK30/30	30	40	30	33500	60000	15000
30	NKI 30/20	30	35	45	24300	41500	13000
30	NKI 30/30	30	35	45	36500	69000	13000
30	NKIS 30	30	37	52	36500	50000	12000
32	NKI 32/20	32	37	47	24900	43500	12000
35	NA 4907	35	42	55	31500	50000	11000
35	NA 6907	35	42	55	48000	86000	11000
35	NK 35/20	35	45	20	24300	41500	13000
35	NK 35/30	35	45	30	36500	69000	13000
35	NKI 35/20	35	40	50	26000	47000	11000
35	NKI 35/30	35	40	50	39000	79000	11000
35	NKIS 35	35	43	58	39000	57000	10000
38	NK 38/20	38	48	20	25500	45000	12000
40	NA 4908	40	48	62	43000	67000	9000
40	NA 6908	40	48	62	66000	116000	9000
40	NK 40/20	40	50	20	26000	47000	11000
40	NK 40/30	40	50	30	39000	79000	11000
40	NKI 40/20	40	45	55	27500	53000	10000
40	NKI 40/30	40	45	55	41000	88000	10000
40	NKIS 40	40	50	65	42500	67000	9000
42	NK 42/20	42	52	20	26500	49000	11000
42	NK 42/30	42	52	30	39500	82000	11000
45	NA 4910	45	52	68	45000	73000	8500
45	NA 6910	45	52	68	69000	127000	8500
45	NK 45/20	45	55	20	27500	53000	10000
45	NK 45/30	45	55	30	41000	88000	10000
45	NKI 45/25	45	50	62	38000	74000	9000
50	NA 4910	50	58	72	47000	80000	8000
50	NA 6910	50	58	72	73000	139000	8000
50	NKI 50/25	50	55	68	40000	82000	8500
50	NKIS 50	50	60	80	63000	98000	7500
55	NKI 55/25	55	60	72	42000	90000	7500
55	NKIS 55	55	65	85	67000	108000	7000

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