Four Row Cylindrical Roller Bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

Four row cylindrical roller bearings have three basic types: FC, FCD and FCDP type, shown as the follow sketch.

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On the three basic types, considering the application and maintenance there are many variants detail structure. The normally featured structure is shown as following sketch:

图片3.png

图片4.png

In bearing table have listed out bearing application data and reference structure sketch number for the bearings in common lese, also have listed out some reference designation of the most famous bearing company, so to make it easy for you to select.

DHK can produce other special bearings according to customer request.

Four row cylindrical roller bearings have three basic types: FC, FCD and FCDP type, shown as the follow sketch.

On the three basic types, considering the application and maintenance there are many variants detail structure. The normally featured structure is shown as following sketch:

In bearing table have listed out bearing application data and reference structure sketch number for the bearings in common lese, also have listed out some reference designation of the most famous bearing company, so to make it easy for you to select.
DHK can produce other special bearings according to customer request.
DHK four row cylindrical roller bearings are produced either solid brass cages or pin-type steel cages.

DHK four row cylindrical roller bearings are produced to the normal tolerance class (PN) or closer tolerance class such as P6 or P5 upon request.

Detailed tolerance values are listed in tolerance of radial bearings. Page 8.

Tolerances for DHK four row cylindrical roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

PN/(Normal)

Nominal Bore diameter		Deviation dmp	Variation Vdp Series			Variation Vdmp	Taper bore 1:12 Deviation/ Variation
>	<=	△dmp	7．8．9	0．1	2．3．4	Vdmp	△dmp	△d1mp-dmp	Vdp
2.5 10		0 -8	10	8	6	6	+15 0	+15 0	10
10 18		0 -8	10	8	6	6	+18 0	+18 0	10
18 30		0 -10	13	10	8	8	+21 0	+21 0	13
30 50		0 -12	15	12	9	9	+25 0	+25 0	15
50 80		0 -15	19	19	11	11	+30 0	+30 0	19
80 120		0 -20	25	25	15	15	+35 0	+35 0	25
120 180		0 -25	31	31	19	19	+40 0	+40 0	31
180 250		0 -30	38	38	23	23	+46 0	+46 0	38
250 315		0 -35	44	44	26	26	+52 0	+52 0	44
315 400		0 -40	50	50	30	30	+57 0	+57 0	50
400 500		0 -45	56	56	34	34	+63 0	+63 0	56
500 630		0 -50	63	63	38	38	+70 0	+70 0
630 800		0 -75					+80 0	+80 0
800 1000		0 -100					+90 0	+90 0
1000 1250		0 -125					+105 0	+105 0
1250 1600		0 -160
1600 2000		0 -200

Outer ring

PN/(Normal)

Nominal Outer diameter		Deviation	Variation Vdp Series			Sealed bearing	Variation	Radial runout
>	<=	△Dmp	7．8．9	0．1	2．3．4	2 3 4	VDmp	Kea
6 18		0 -8	10	8	6	10	6	15
18 30		0 -9	12	9	7	12	7	15
30 50		0 -11	14	11	8	16	8	20
50 80		0 -13	16	13	10	20	10	25
80 120		0 -15	19	19	11	26	11	35
120 150		0 -18	23	23	14	30	14	40
150 180		0 -25	31	31	19	38	19	45
180 250		0 -30	38	38	23		23	50
250 315		0 -35	44	44	26		26	60
315 400		0 -40	50	50	30		30	70
400 500		0 -45	56	56	34		34	80
500 630		0 -50	63	63	38		38	100
630 800		0 -75	94	94	55		55	120
800 1000		0 -100	125	125	75		75	140
1000 1250		0 -125						160
1250 1600		0 -160						190
1600 2000		0 -200						220
2000 2500		0 -250						250

DHK can provide four row cylindrical roller bearings with variants radial clearance upon to the request.

For detailed clearance group values, see page 128.

Internal Clearance Groups Of DHK Cylindrical Roller Bearings With Cylindrical Bore

Bore Dia.(mm)
>	<=	C1（um）	C2（um）	CN（um）	C3（um）	C4（um）	C5（um）
-- 24		5 15	0 25	20 45	35 60	50 75	75 100
24 30		5 15	0 25	20 45	35 60	50 75	75 100
30 40		5 15	5 30	25 50	45 70	60 85	85 110
40 50		5 18	5 35	30 60	50 80	70 100	100 130
50 65		5 20	10 40	40 70	60 90	80 100	110 140
65 80		10 25	10 45	40 75	65 100	90 125	125 160
80 100		10 30	15 50	50 85	75 110	105 140	140 175
100 120		10 30	15 55	50 90	85 125	125 165	165 205
120 140		10 35	15 60	60 105	100 145	145 190	190 235
140 160		10 35	20 70	70 120	115 165	165 215	215 265
160 180		10 40	25 75	75 125	120 170	170 220	220 270
180 200		15 45	35 90	90 145	140 195	195 250	250 305
200 225		15 50	45 105	105 165	160 220	220 280	280 340
225 250		15 50	45 110	110 175	170 235	235 300	300 365
250 280		20 55	55 125	125 195	190 260	260 330	330 400
280 315		20 60	55 130	130 205	200 275	275 350	350 425
315 355		20 65	65 145	145 225	225 305	305 385	385 465
355 400		25 75	100 190	190 280	280 270	570 460	460 550
400 450		25 85	110 210	210 310	310 410	410 510	510 610
450 500		25 95	110 220	220 330	330 440	440 550	550 660
500 560		25 100	120 240	240 360	360 480	480 600	600 720
560 630		30 110	140 260	260 380	380 500	500 620	620 740
630 710		30 130	145 285	285 425	425 565	565 705	705 845
710 800		35 140	150 310	610 470	470 630	630 790	790 950
800 900		35 160	180 350	350 520	520 690	690 860	860 1030
900 1000		35 170	200 390	390 580	580 770	770 960	960 1150
1000 1120		50 200	220 430	430 640	640 850	850 1060	1060 1270
1120 1250		50 200	230 470	470 710	710 950	950 1190	1060 1270
1250 1400		50 200	270 530	530 790	790 1050	1050 1310	1060 1270
1400 1600		50 200	330 610	610 890	890 1170	1170 1450	1060 1270
1600 1800		50 200	380 700	700 1020	1020 1340	1340 1660	1060 1270
1800 2000		50 200	400 760	760 1120	1120 1480	1480 1840	1060 1270

Internal clearance groups of DHK cylindrical roller bearings with tapered bore

Bore Dia.(mm)
>	<=	C1（um）	C2（um）	CN（um）	C3（um）	C4（um）	C5（um）
-- 24		10 20	15 40	30 55	40 65	50 75	75 100
24 30		15 25	20 45	35 60	45 70	55 80	80 105
30 40		15 25	20 45	40 65	55 80	70 95	95 120
40 50		17 30	25 55	45 75	60 90	75 105	105 135
50 65		20 35	30 60	50 80	70 100	90 120	120 150
65 80		25 40	35 70	60 95	85 120	110 145	145 180
80 100		35 55	40 75	70 105	95 130	120 155	155 190
100 120		40 60	50 90	90 130	115 155	140 180	180 220
120 140		45 70	55 100	100 145	130 175	160 205	205 250
140 160		50 75	60 110	110 160	145 195	180 230	230 280
160 180		55 85	75 125	126 175	160 210	195 245	245 295
180 200		60 90	85 140	140 195	180 235	220 275	275 330
200 225		60 95	95 155	155 215	200 260	245 305	305 365
225 250		65 100	105 170	170 235	220 285	270 335	335 400
250 280		75 110	115 185	185 255	240 310	295 365	365 435
280 315		80 120	130 205	205 280	265 340	325 400	400 475
315 355		90 135	145 250	225 304	290 370	355 435	435 515
355 400		100 150	165 255	225 345	330 420	405 495	495 585
400 450		110 170	185 285	285 385	370 470	455 555	555 655
450 500		120 190	205 315	315 425	410 520	505 615	615 725
500 560		130 210	230 350	350 470	455 575	560 680	680 800
560 630		140 230	260 380	380 500	500 620	620 740	740 860
630 710		160 260	295 435	435 575	565 705	685 835	935 975
710 800		170 290	325 485	485 645	630 790	775 935	935 1095
800 900		190 330	370 540	540 710	700 870	860 1030	1030 1200
900 1000		210 360	410 600	600 790	780 970	960 1150	1150 1340
1000 1120		230 400	455 665	665 875	865 1075	1065 1275	1275 1485
1120 1250		230 400	490 730	730 970	960 1200	1200 1440	1275 1485
1250 1400		230 400	550 810	810 1070	1070 1330	1330 1590	1275 1485
1400 1600		230 400	640 920	920 1200	1200 1480	1480 1760	1275 1485
1600 1800		230 400	700 1020	1020 1340	1340 1660	1660 1980	1275 1485
1800 2000		230 400	760 1120	1120 1480	1480 1840	1840 2200	1275 1485

Dimensions and Parameters

Inquiry	Bearing No.	Boundary dimensions(mm)							Basic load ratings(kN)		Weight (kg)	Reference model
Inquiry	Bearing No.	d	D	B	Fw	r1.2min	r3.4min	Draw	Dynamic(Cr)	Static(Cor)	Weight (kg)	SKF	FAG	NTN	NSK	KOYO
	FC6890250	340	450	250	371	4	4	1	2580	6400	111				340RV4502	68FC45250BW
	FC6890250A	340	450	250	368	4	4	2	2580	6410	111
	FCD68292260	340	460	260	370	4	4	4	2800	7300	125
	FC6896280	340	480	280	374	4	4	2	3120	8120	160
	FCD6896350	340	480	350	378	4	4	6	4580	11100	211					68FC48350-2
	FCD6896350A	340	480	350	378	4	4	9	4400	9830	205	314485A	527634	4R6819		68FC48350D
	FC6896300	340	490	300	377	4	4	1	3350	8300	187			4R6804
	FC6896300A	340	490	300	380	4	4	1	3500	7600	187					68FC49300
	FCDP68100370	340	500	370	385	4	4	10	4800	10600	261	BC4B322261/HB1	517749
	FCDP68120380	340	560	380	396	4	4	10	5800	11880	350	313404A	545171
	FCD6996350	345	480	350	376	4	4	4	4180	9780	192				345RV4821
	FCD70100380	350	500	380	389	5	5	4	4200	10080	240	314563/VJ202	532381.N12BA
	FCDP70100410	350	500	410	388	5	5	10	4960	12300	285	BC4B322777/HB1	532001
	FCDP70100460	350	500	460	388	5	5	9	6570	16500						70FC50460
	FCD70104300	350	520	300	401	5	5	4	4070	79050	220	BC2B319878/VJ202
	FCD70104300/HC	350	520	300	401	5	5	8	4290	9000	220	BC4B326909/HA3
	FC7296290	360	480	290	392	4	4	1	3470	8510	145					72FC48290
	FC7296290A	360	480	290	394	4	4	1	3080	7470	149				360RV4801
	FCD72100250	360	500	250	394	4	4	4	3040	6620	146	BC2B320075/VJ202
	FC72102370	360	510	370	400	4	4	1	4250	9600	241			4R7212	360RV5101	72FC51370
	FCDP72102380	360	510	380	399	4	4	9	5200	12300	246					72FC51380
	FC72102400	360	510	400	397	4	4	2	4500	11500	260			4R7203
	FCDP72104380	360	520	380	405	4	4	10	3350	8300	270		562913			72FC52380
	FCDP72108300	360	540	300	404	4	4	10	4310	8680	247					72FC54300
	FC496230	370	480	230	400	4	4	1	2100	6250	106			4R7405
	FC7496250	370	480	250	385	3	3	2	2820	7320	115					72FC48250W
	FC7496250	370	480	250	401	4	4	1	2690	6980	120			4R7408	370RV4801
	FCDP74104380	370	520	380	409	4	4	9	4680	11790	263	314486A	543975		370RV5211	72FC52380
	FCDP74104380	370	520	380	409	4	4	10	6400	12900	252		524678A
	FCD74104400	370	520	400	409	4	4	1	4680	10500	260			4R7404
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