Single Row Angular Contact Ball Bearings

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Design Variants

Misalignment

Cage

Tolerance

Internal clearance

DHK single row angular contact ball bearings are non-separable radial bearings, Due to their different contact angles , they have four design variants.

1) Contact angle with 15 , bearing designation with suffix C.

2) Contact angle with 25 , bearing designation with suffix AC.

3) Contact angle with 35 , bearing designation with suffix A.

4) Contact angle with 40 , bearing designation with suffix B.

Paired Bearings：

Single row angular contact ball bearings are ofen used as pairs. DHK can produced different arrangements bearing pairs, the customer can use the pairs direct so to save the mounting works and avoid the mistake of adjusting the mounting clearance. The frequently used arrangement pairs as the follows.

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DHK single row angular contact ball bearings are non-separable radial bearings, Due to their different contact angles , they have four design variants.
1) Contact angle with 15 , bearing designation with suffix C.
2) Contact angle with 25 , bearing designation with suffix AC.
3) Contact angle with 35 , bearing designation with suffix A.
4) Contact angle with 40 , bearing designation with suffix B.

Paired Bearings：
Single row angular contact ball bearings are ofen used as pairs. DHK can produced different arrangements bearing pairs, the customer can use the pairs direct so to save the mounting works and avoid the mistake of adjusting the mounting clearance. The frequently used arrangement pairs as the follows.
Single row angular contact ball bearings have a very limited ability to accommodate misalignments. Any operating misalignments applied to this bearings will reduce their service life and generates higher running noise.
Normally, up to 2 angular minutes misalignment form the centre p0stion does not effact the bearings negatively.
DHK single row angular contact ball bearings are fitted with plastic cage (suffix TVP) as standard. Large size have machined solid brass(Suffix M) fitted as standard.
On reguest, DHK also can produce this bearing with pressed steel cage(suffix JP) or phenolic resin cage(Suffix TPA).

DHK single row angular contact ball bearings are produced to normal tolerance class(PN) as standard.

On request, DHK also can produce the bearings with closer tolerance, such as P6, P5 or P4.

Detailed values are listed in chapter of tolerance of redial bearing, page 8.

Tolerances for DHK single row angular contact ball 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	Designations	Boundary dimensions					Load ratings[KN]		Speed ratings[rpm]		Mass
Inquiry	Designations	d	D	B	r1,r2 Min	a ≈	Dynmic Cr	stat Cor	grease	oil	Mass
	7218C	90	160	30	2	1	123	105	3600	4800	2.18
	7218AC	90	160	30	2	1	117	100	3600	4800	2.19
	7218B	90	160	30	2	1	106	93	3200	4300	2.4
	7318C	90	190	43	3	1.1	185	160	3200	4300	4.87
	7318AC	90	190	43	3	1.1	178	154	3200	4300	5.06
	7318B	90	190	43	3	1.1	160	140	2800	3800	5.3
	7418AC	90	225	54	4	1.5	233	214	2600	3600	12.2
	7019C	95	145	24	1.5	0.6	73.6	77.1	3800	5000	1.2
	7019AC	95	145	24	1.5	0.6	69.5	71	3800	5000	1.2
	7219C	95	170	32	2.1	1.1	135	120	3400	4500	2.7
	7219AC	95	170	32	2.1	1.1	128	114	3400	4500	2.7
	7219B	95	170	32	2.1	1.1	116	100	3000	4000	3.1
	7319C	95	200	45	3	1.1	201	180	3000	4000	5.98
	7319AC	95	200	45	3	1.1	193	173	3000	4000	5.98
	7319B	95	200	45	3	1.1	173	153	2800	3800	6.2
	7020C	100	150	24	1.5	0.6	79.4	81.3	3800	5000	1.25
	7020AC	100	150	24	1.5	0.6	75.1	77	3800	5000	1.25
	7220C	100	180	34	2.1	1.1	120	136	3000	4000	3.71
	7220AC	100	180	34	2.1	1.1	114	130	3000	4000	3.74
	7220B	100	180	34	2.1	1.1	100	114	3000	4000	4
	7320C	100	215	47	3	1.1	222	207	2600	3600	7.2
	7320AC	100	215	47	3	1.1	164	199	2600	3600	9.61
	7320B	100	215	47	3	1.1	146	178	2600	3600	8.41
	7221BM	105	190	36	2.1	1.1	143	129	2800	3800	4.4
	7321BM	105	225	49	3	1.1	208	200	2400	3400	9.5
	7022ACM	110	170	28	2	1	100	101	3000	4000	2.41
	7222CM	110	200	38	2.1	1.1	142	171	2600	3600	5.03
	7222ACM	110	200	38	2.1	1.1	135	164	2600	3600	4.89
	7222BM	110	200	38	2.1	1.1	145	135	2600	3600	5.18
	7322ACM	110	240	50	3	1.1	184	231	2200	3200	9.97
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