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Single Row Cylindrical Roller Bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

Single row cylindrical roller bearings are available in several basic designs that differ from each other in number and arrangement of their flanges, the most important design variants are shown below.

图片1.png

N type bearings features two integral flanges on the inner ring and outer ring without flanges.

NU type bearings features two integral flanges on the outer ring and inner ring without flanges, N and NU type bearings belong to the Non-locating bearings, they are not able to accommodate any axial loads.

NJ type bearings features two integral flanges on the outer ring and one integral flange on the inner ring, this allows them to accommodate axial loads in one direction only.

NUP type bearings have two integral flanges on the outer ring, one integral flange on the inner ting and a loose rib, so it is locating bearing and can accept axial loads in either direction.

NJ type bearings used in conjunction with thrust collars can build a locating bearing, which can accept axial loads in either direction.

Single row cylindrical roller bearings are available in several basic designs that differ from each other in number and arrangement of their flanges, the most important design variants are shown below.

N type bearings features two integral flanges on the inner ring and outer ring without flanges.
NU type bearings features two integral flanges on the outer ring and inner ring without flanges, N and NU type bearings belong to the Non-locating bearings, they are not able to accommodate any axial loads.
NJ type bearings features two integral flanges on the outer ring and one integral flange on the inner ring, this allows them to accommodate axial loads in one direction only.
NUP type bearings have two integral flanges on the outer ring, one integral flange on the inner ting and a loose rib, so it is locating bearing and can accept axial loads in either direction.
NJ type bearings used in conjunction with thrust collars can build a locating bearing, which can accept axial loads in either direction.
DHK single row cylindrical roller bearings have the rolling elements with modified outer diameter and crowning inner ring raceway, which minimize edge loading stresses between the rollers and raceway.
For applications operating under normal conditions the misalignment must not exceed 4 angular minutes.
For applications where higher misalignment may occur, DHK also produce single row cylindrical roller bearings with special crowned inner ring raceways (suffix B) to enable higher misalignments during operation.
DHK single row cylindrical roller bearings are available with all kinds material and design variants of cage upon request.
The most important materials and design variants of DHK single row cylindrical roller bearing cages are shown below.
Reinforced polyamide cages:
TN normal design of polyamide cage features holding lips on both side of roller pocket.
TN1 These are the enforced design of TN type.
TN2 Features holding lips on one side of roller pockets.This make it can raise the wall thickness of the cage at no-holding lip side, and therefore raised the strength of the cages.
Pressed Steel Cage: JP, JP1
Solid brass cages
M (MA, MB): normal design, features cage cover and cage body, rivetted by the steel rivets.
M2 (MA2, MB2): features cage body with round rivetting heads on its self and cage cover.
M6(MA6, MB6): features cage body with square riveting heads on its self and cage cover.

DHK single row cylindrical roller bearings are produced to normal tolerance class (PN) as standard.

DHK also can provide these bearings with closer tolerance class such as P6 and P5, tolerance.

Detailed tolerance values are listed in the chapter of tolerance of radial bearings, page 8.

Tolerances for DHK single 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 single row cylindrical roller bearings are produced to normal tolerance class (PN) as standard.

DHK also can provide these bearings with closer tolerance class such as P6 and P5, tolerance.

Detailed tolerance values are listed in the chapter of tolerance of radial bearings, page 8.

Tolerances for DHK single 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

Dimensions and Parameters

Inquiry	Bearing NO.	Dimension						Basic load ratings		Limiting speed(rpm )		Bearing Dimension				Oblique retaining ring		Weight
Inquiry	Bearing NO.	d	D	B	r1 r2 min	r3 r4 min	S ≈	Dynamic(Cr)	Static(Cor)	Grease	Oil	E	F	d1 ≈	D1 ≈	B2	B3	Bearing	Oblique retaining ring
	NJ418M	90	225	54	4	4	--	365	390	2600	3200	--	123.5	137	178.8	14	24	11.5	1.1
	NUP418M	90	225	54	4	4	--	365	390	2600	3200	--	123.5	137	178.8	--	--	11.5	--
	NU1019M	95	145	24	1.5	1.1	4.1	96.5	129	4300	5000	--	108	113	127.1	6	12	1.45	0.18
	N219E	95	170	32	2.1	2.1	1.4	220	265	3200	3800	154.5	--	120.7	--	--	--	2.8	--
	NU219E	95	170	32	2.1	2.1	1.4	220	265	3200	3800	--	112.5	--	147.4	--	--	2.8	--
	NJ219E	95	170	32	2.1	2.1	--	220	265	3200	3800	--	112.5	120.7	147.4	9	14	2.8	0.35
	NUP219E	95	170	32	2.1	2.1	--	220	265	3200	3800	--	112.5	120.7	147.4	--	--	2.8	--
	NU2219E	95	170	43	2.1	2.1	3.5	285	375	3200	3800	--	112.5	--	147.4	--	--	3.8	--
	NJ2219E	95	170	43	2.1	2.1	--	285	375	3200	3800	--	112.5	120.7	147.4	9	15.5	3.8	0.37
	NUP2219E	95	170	43	2.1	2.1	--	285	375	3200	3800	--	112.5	120.7	147.4	--	--	3.8	--
	NU3219E	95	170	55.6	2.1	2.1	6	335	511	3300	4000	--	113.5	--	--	--	--	6.65	--
	N319E	95	200	45	3	3	3.5	335	380	2800	3400	177.5	--	132.2	--	--	--	6.3	--
	NU319E	95	200	45	3	3	3.5	335	380	2800	3400	--	121.5	--	168.2	--	--	6.3	--
	NJ319E	95	200	45	3	3	--	335	380	2800	3400	--	121.5	132.2	168.2	13	30.5	6.3	0.8
	NUP319E	95	200	45	3	3	--	335	380	2800	3400	--	121.5	132.2	168.2	--	--	6.3	--
	NU2319E	95	200	67	3	3	7.2	455	585	2800	3400	--	121.5	--	168.2	--	--	9.3	--
	NJ2319E	95	200	67	3	3	--	455	585	2800	3400	--	121.5	132.2	168.2	13	24.5	9.3	0.83
	NUP2319E	95	200	67	3	3	--	455	585	2800	3400	--	121.5	132.2	168.2	--	--	9.3	--
	N419M	95	240	55	4	4	5.2	390	430	2400	3000	201.5	--	147	--	--	--	13.8	--
	NU419M	95	240	55	4	4	5.2	390	430	2400	3000	--	133.5	--	188.8	--	--	13.8	--
	NJ419M	95	240	55	4	4	--	390	430	2400	3000	--	133.5	147	188.8	15	25.5	13.8	1.3
	NUP419M	95	240	55	4	4	--	390	430	2400	3000	--	133.5	147	188.8	--	--	13.8	--
	NU1020M	100	150	24	1.5	1.1	4.3	98	134	4000	4800	--	113	118	132.1	6	12	1.5	0.18
	N220E	100	180	34	2.1	2.1	1.4	250	305	3200	3800	163	--	127.3	--	--	--	3.44	--
	NU220E	100	180	34	2.1	2.1	1.4	250	305	3200	3800	--	119	--	155.5	--	--	3.44	--
	NJ220E	100	180	34	2.1	2.1	--	250	305	3200	3800	--	119	127.3	155.5	10	15	3.44	0.44
	NUP220E	100	180	34	2.1	2.1	--	250	305	3200	3800	--	119	127.3	155.5	--	--	3.44	--
	NU2220E	100	180	46	2.1	2.1	3	335	440	3200	3800	--	119	--	155.5	--	--	5.5	--
	NJ2220E	100	180	46	2.1	2.1	--	335	440	3200	3800	--	119	127.3	155.5	10	16	5.5	0.45
	NUP2220E	100	180	46	2.1	2.1	--	335	440	3200	3800	--	119	127.3	155.5	--	--	5.5	--
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